CN103100619A - Rolling forming method for biphase stainless steel ring piece with complex irregular section - Google Patents
Rolling forming method for biphase stainless steel ring piece with complex irregular section Download PDFInfo
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- CN103100619A CN103100619A CN2012105321279A CN201210532127A CN103100619A CN 103100619 A CN103100619 A CN 103100619A CN 2012105321279 A CN2012105321279 A CN 2012105321279A CN 201210532127 A CN201210532127 A CN 201210532127A CN 103100619 A CN103100619 A CN 103100619A
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- 238000005096 rolling process Methods 0.000 title claims abstract description 88
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 40
- 239000010935 stainless steel Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000001788 irregular Effects 0.000 title abstract 12
- 239000002184 metal Substances 0.000 claims abstract description 39
- 238000004080 punching Methods 0.000 claims abstract description 5
- 238000007493 shaping process Methods 0.000 claims description 20
- 230000002093 peripheral effect Effects 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005242 forging Methods 0.000 description 4
- 241000251468 Actinopterygii Species 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
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Abstract
The invention discloses a rolling forming method for a biphase stainless steel ring piece with a complex irregular section. The rolling forming method for the biphase stainless steel ring piece with the complex irregular section aims to form a ring piece with the complex irregular section by rolling, wherein the ring piece with the complex irregular section is intact in appearance, high in size precision, good in structure and performance and distributed along the external form of a part. According to the technical scheme, a biphase stainless steel barstock blanked according to a specification is machined into a rectangular pre-rolled blank through upsetting, punching and ring rolling after being heated; after being heated, the rectangular pre-rolled blank is rolled into an irregular pre-rolled blank which is inverse to a final-rolled ring piece with the irregular section in structure and shape by a pre-rolled inner shape module and a pre-rolled outer shape module in a pre-rolled irregularly-shaped hole; and the irregular pre-rolled blank after being heated is rolled to be a ring unit with an irregular section by a final-rolled inner shape module and a final-rolled outer shape module in a final-rolled irregularly-shaped hole. When being rolled, the irregular pre-rolled blank is broadened along the radial direction and the metal inside the irregular pre-rolled blank flows from a place with more metal to a place with less metal according to preset volume flow rate in the final-rolled irregularly-shaped hole. The biphase stainless steel ring piece with the complex irregular section is mainly used for a part of a cylindrical revolution solid of a centrifugal machine.
Description
Technical field
The present invention relates to a kind of roll-forming method of annular element, particularly related to the method for rolling and shaping of two phase stainless steel Complex Different Shape cross section annular element.
Background technology
News speed development along with industries such as Aeronautics and Astronautics, boats and ships, nuclear energy, gas turbine, wind-power electricity generations, forming dimension precision, Microstructure and properties to annular element have also proposed higher requirement, the annular element rolling technique is also thereupon towards the near-net-shape future development, its cross sectional shape of the annular element of roll forming becomes increasingly complex, the roll forming difficulty is increasing, and how to obtain the annular element distributed along External Shape, is the prerequisite that realizes that precision rolling is shaped.
On October 8th, 2008, disclosed Chinese invention patent specification CN 101279343A disclosed a kind of method for rolling and shaping of stainless steel special-shaped ring forging, the method by the stainless steel bar of specification blanking through jumping-up, punching, roll ring and produce the different strip plate of rectangle, again the different strip plate of rectangle being put into to rolling and shaping in machine for rolling ring roll off mould is forging special-shape ring, by the deflection of precise control in each processing step, tissue and well behaved forging special-shape ring have been rolled out.The method is owing to adopting the direct roll off of the pre-strip plate of rectangle to become the Special-shaped annular part, odd-shaped cross section annular element that generally can only the rolling and shaping simple shape, if the odd-shaped cross section annular element that adopts the method roll off complicated shape is when for example existing groove surface also has the Complex Different Shape cross section two phase stainless steel annular element of boss face on cross section, due to the metal flow complexity of the pre-strip plate of rectangle in rolling groove in the roll off process, effect interface conditions complexity between the pre-strip plate of rectangle and rolling groove, the roll off process has significantly non-linear, in time, become, the unstable state characteristic, causing the odd-shaped cross section annular element of rolling and shaping easily to produce cross section profile is not fully filled, outer surface has folding, end face has the defects such as fish scale-shaped, thereby affect dimensional accuracy and the structure property of finish to gauge annular element, when serious, also can cause annular element to be scrapped, be unfavorable for realizing the accurate rolling and shaping of odd-shaped cross section annular element.
Summary of the invention
The technical problem to be solved in the present invention is to provide the method for rolling and shaping that the pre-strip plate of a kind of abnormity by predetermined flow reversal deformation is realized two phase stainless steel Complex Different Shape cross section annular element, adopts that the method can roll out that profile is complete, dimensional accuracy is high, tissue and function admirable the two phase stainless steel Complex Different Shape cross section annular element that distributes along External Shape.
For solving the problems of the technologies described above, the method for rolling and shaping of two phase stainless steel Complex Different Shape of the present invention cross section annular element, its processing step is as follows:
Two phase stainless steel bar by the specification blanking is heated to the deformation temperature of 950 ℃～1160 ℃ by the orthogonal pre-strip plate of jumping-up, punching and looping mill rolling:
Heat the pre-strip plate of described rectangle and make its longitudinal cross-section in the rolling in advance in section groove of roll off mould to putting into machine for rolling ring after above-mentioned deformation temperature, described roll in advance section groove by thering is the interior pattern piece of rolling in advance of groove surface, roll in advance external form module and upper end cover and bottom end cover with fovea superior groove face and recessed groove face surround;
Starting machine for rolling ring makes core roller and home roll roll in advance the pre-strip plate of roll off rectangle in section groove with the roll-force of 855KN～1855KN, the pre-strip plate of rectangle is with the speed of 10mm/s～16mm/s broadening radially, and is deformed into the pre-strip plate of abnormity along the direction contrary with finish to gauge odd-shaped cross section annular element planform by predetermined volume flow rolling in advance interior pattern piece and roll in advance under the roll off of external form module; The pre-strip plate of described abnormity rolls in advance straight-flanked ring, second by first and rolls in advance special-shaped ring, the 3rd and roll in advance straight-flanked ring, the 4th and roll in advance special-shaped ring and the 5th and roll in advance straight-flanked ring and superpose and form successively; Have on the inner ring surface of the pre-strip plate of abnormity and roll in advance the convex table top, have on its outer ring surface and roll in advance the epirelief table top and roll in advance the lower convex platform face, the described epirelief table top that rolls in advance is in the second outer peripheral face that rolls in advance special-shaped ring, and the described lower convex platform face that rolls in advance is in the 4th outer peripheral face that rolls in advance special-shaped ring; Roll in advance special-shaped ring and the 4th second and roll in advance between special-shaped ring to have and roll in advance groove surface, and described first rolls that straight-flanked ring and the 5th rolls the straight-flanked ring shape in advance and size identical, described second rolls that special-shaped ring and the 4th rolls the special-shaped ring shape in advance and size is identical in advance in advance;
The interior pattern piece of rolling in advance of machine for rolling ring core roller die is replaced by pattern piece in finish to gauge, and in described finish to gauge, the outer peripheral face of pattern piece has the evagination table top; The external form module of rolling in advance of home roll mould is replaced by finish to gauge external form module, there is epirelief table top and lower convex platform face on the outer peripheral face of described finish to gauge external form module; In described finish to gauge, outer peripheral face and described upper end cover, the bottom end cover of pattern piece, finish to gauge external form module surround the finish to gauge section groove;
The pre-strip plate of abnormity is heated in forge furnace after the deformation temperature of 950 ℃～1160 ℃ and puts into machine for rolling ring and make its longitudinal cross-section in the finish to gauge section groove, the evagination table top that makes pattern piece in finish to gauge and abnormity in advance strip plate to roll in advance the convex table top corresponding, the epirelief table top of finish to gauge external form module and the pre-strip plate of abnormity to roll in advance the epirelief table top corresponding, the lower convex platform face of finish to gauge external form module and abnormity in advance strip plate to roll in advance the lower convex platform face corresponding;
The startup machine for rolling ring is rolled the pre-strip plate of abnormity with the roll-force of 575KN～875KN, the pre-strip plate of described abnormity is in the finish to gauge section groove, rolling in advance on its inner ring surface rolled the epirelief table top on convex table top and outer ring surface thereof in advance, rolling in advance the lower convex platform kept man of a noblewoman first is subject to from the evagination table top of pattern piece in finish to gauge and the epirelief table top of finish to gauge external form module, the rolling of lower convex platform face, the pre-strip plate of abnormity in section groove with the speed of 4mm/s～10mm/s broadening radially, metal flow is rolled in advance special-shaped ring from second and is rolled in advance straight-flanked ring and the 3rd to first and roll in advance straight-flanked ring and flow in it, simultaneously from the 4th, rolling in advance special-shaped ring rolls in advance straight-flanked ring and the 5th to the 3rd and rolls in advance the straight-flanked ring direction and flow, roll in advance metal in special-shaped ring and flow to first and roll in advance the metal volume that straight-flanked ring and the 3rd rolls in straight-flanked ring in advance and be respectively predetermined flow volume V when second
0, and roll in advance metal in special-shaped ring and flow to the 3rd and roll in advance the metal volume that straight-flanked ring and the 5th rolls in straight-flanked ring in advance and be respectively predetermined flow volume V when the 4th
0the time, the pre-strip plate of abnormity is become complicated odd-shaped cross section annular element by roll off in the finish to gauge section groove, described odd-shaped cross section annular element is by the first finish to gauge special-shaped ring, the second finish to gauge straight-flanked ring, the 3rd finish to gauge special-shaped ring, the 4th finish to gauge straight-flanked ring and the 5th finish to gauge special-shaped ring composition that superposes successively, the outer ring surface of described the 3rd finish to gauge special-shaped ring has finish to gauge evagination table top, there is finish to gauge fovea superior groove face between described the first finish to gauge special-shaped ring and the 3rd finish to gauge special-shaped ring, there is the recessed groove face of finish to gauge between described the 3rd finish to gauge special-shaped ring and the 5th finish to gauge special-shaped ring, there is the finish to gauge inner groove faces on the inner ring surface of described odd-shaped cross section annular element, and the shape and size of described the first finish to gauge special-shaped ring and the 5th finish to gauge special-shaped ring are identical, the shape and size of described the second finish to gauge straight-flanked ring and the 4th finish to gauge straight-flanked ring are identical.
The material trademark of described two phase stainless steel is 1.4462.
Volume relationship between the pre-strip plate of described abnormity and described odd-shaped cross section annular element calculates by following formula:
V
01=V
1－V
0；V
02=V
2＋2V
0；V
03=V
3－2V
0；V
04=V
4＋2V
0；V
05=V
5－V
0；
In formula:
V
01---first rolls the annular volume that straight-flanked ring is corresponding in advance;
V
02---second rolls the annular volume that special-shaped ring is corresponding in advance;
V
03---the 3rd rolls the annular volume that straight-flanked ring is corresponding in advance;
V
04---the 4th rolls the annular volume that special-shaped ring is corresponding in advance;
V
05---the 5th rolls the annular volume that straight-flanked ring is corresponding in advance;
V
1---annular volume corresponding to the first finish to gauge special-shaped ring;
V
2---annular volume corresponding to the second finish to gauge straight-flanked ring;
V
3---annular volume corresponding to the 3rd finish to gauge special-shaped ring;
V
4---annular volume corresponding to the 4th finish to gauge straight-flanked ring;
V
5---annular volume corresponding to the 5th finish to gauge special-shaped ring;
V
0---roll in advance in special-shaped ring and flow to the first predetermined metal flow volume of rolling in advance in straight-flanked ring from second; Equal to roll in advance in special-shaped ring and flow to the 3rd predetermined metal flow volume of rolling in advance in straight-flanked ring from second; Equal to roll in advance in special-shaped ring and flow to the 3rd predetermined metal flow volume of rolling in advance in straight-flanked ring from the 4th; Equal to roll in advance in special-shaped ring and flow to the 5th predetermined metal flow volume of rolling in advance in straight-flanked ring from the 4th.
Compared with prior art, beneficial effect of the present invention is as follows:
The present invention is first rolling the pre-strip plate of two phase stainless steel rectangle of producing in section groove by rolling in advance interior pattern piece and rolling in advance external form module roll off and become the abnormity pre-strip plate contrary with finish to gauge odd-shaped cross section annular element planform in advance, then the pre-strip plate of abnormity in the finish to gauge section groove by finish to gauge in the pattern piece become the odd-shaped cross section annular element with finish to gauge external form module roll off, during roll off, the pre-strip plate of described abnormity is in the finish to gauge section groove, roll in advance rolling in advance on convex table top and outer ring surface thereof on its inner ring surface, the lower convex platform kept man of a noblewoman first is subject to upper from the evagination table top of pattern piece in finish to gauge and finish to gauge external form module, the rolling of lower convex platform face, the pre-strip plate of abnormity radially its interior metal of broadening flows from more place to less place, accurate control by designing and calculating and machine for rolling ring, making the pre-strip plate second of abnormity roll in advance metal in special-shaped ring flows to first and rolls in advance the metal volume that straight-flanked ring and the 3rd rolls in straight-flanked ring in advance and be respectively predetermined flow volume, the 4th rolls metal in special-shaped ring in advance flows to the 3rd and rolls in advance the metal volume that straight-flanked ring and the 5th rolls in straight-flanked ring in advance and be respectively predetermined flow volume, while due to the pre-strip plate of abnormity roll off in section groove, becoming the odd-shaped cross section annular element, its volume is constant, flow to the effect interface relation of having simplified between special-shaped pre-strip plate and rolling groove by guide wire, increased the stability of roll off process, obtained the Complex Different Shape cross section annular element that is complete streamline distribution along External Shape, overcome in the roll off process be prone to that cross section profile is not fully filled, outer surface has folding, end face that the defects such as fish scale-shaped are arranged, and realized the accurate rolling and shaping of two phase stainless steel Complex Different Shape cross section annular element.
The present invention adopts larger roll-force and higher broadening speed when the pre-strip plate of system abnormity, be conducive to the pre-strip plate Quick-forming of rectangle for the pre-strip plate of abnormity, enhance productivity, and can not produce any impact to dimensional accuracy and the structure property of finish to gauge odd-shaped cross section annular element; Adopt less roll-force and lower broadening speed when rolling and shaping odd-shaped cross section annular element, be conducive to control metal flow speed and the flow direction in the pre-strip plate of abnormity, the profile of odd-shaped cross section annular element can be full of, avoid the defects such as generation is folding, fish scale-shaped, and obtain even, fine and close interior tissue.
The dimensional accuracy of this two phase stainless steel odd-shaped cross section annular element after testing, reached 3 ‰ (3/1000ths) of corresponding size.
The room temperature tensile performance of this two-way stainless steel odd-shaped cross section annular element after testing, its tensile strength is 660MPa～860MPa that 729MPa(meets instructions for use), yield strength when its percentage elongation is 0.2% is 450 MPa that 550MPa(is greater than instructions for use), elongation after fracture be 45%(be greater than instructions for use 25%), Brinell hardness be 226(meet instructions for use 200～260); After testing this two-way stainless steel odd-shaped cross section annular element-10 ℃ of cryogenic properties, its ballistic work is the 100J that 126J(is greater than instructions for use).
The metallographic structure of this two-way stainless steel odd-shaped cross section annular element after testing, ferrite content is 55%, has no the σ phase, has reached instructions for use.
The accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is the blank-making technology flow chart of the pre-strip plate of two phase stainless steel rectangle.
Fig. 2 is the structure chart that the pre-strip plate of two phase stainless steel rectangle is put into the roll off mould.
Fig. 3 be the pre-strip plate roll off of the rectangle shown in Fig. 2 technical process overlook the direction schematic diagram.
Fig. 4 is the profilograph of the pre-strip plate of two phase stainless steel abnormity of rolling and shaping along its center line.
Fig. 5 is the profilograph of the two phase stainless steel Complex Different Shape cross section annular element of rolling and shaping along its center line.
Fig. 6 is the vertical section comparison diagram of the Complex Different Shape cross section annular element shown in the pre-strip plate of the abnormity shown in Fig. 4 and Fig. 5 along its center line.
Fig. 7 is that the structure chart in the finish to gauge section groove is put in the longitudinal cross-section of the pre-strip plate of two phase stainless steel abnormity.
Fig. 8 is the longitudinal cross-section of the pre-strip plate of the two phase stainless steel abnormity metal flow direction schematic diagram during by roll off in the finish to gauge section groove.
The specific embodiment
The method for rolling and shaping of implementing two phase stainless steel Complex Different Shape of the present invention cross section annular element need to provide the equipment such as forge furnace, forcing press, machine for rolling ring, manipulator.The two phase stainless steel that the Sweden's material trademark of below take is 1.4462 describes the specific embodiment of the method in detail as example:
The main chemical elements content (percentage by weight) of this two phase stainless steel is: C content≤0.030%, si content≤1.00%, containing Mn amount≤2.00%, P content≤0.035%, containing S amount≤0.015%, containing Cr amount 21.0%～23.0%, containing N amount 0.10%～0.22%, containing Mo amount 2.50%～3.50%, ni content 4.50%～6.50%, surplus is Fe.
This two phase stainless steel is as follows to the processing step of producing qualified Complex Different Shape cross section annular element from bar:
Step 1: the base of the pre-strip plate of rectangle.
The base of the pre-strip plate of rectangle provided in prior art as shown in Figure 1, be heated to the deformation temperature of 950 ℃～1160 ℃ in forge furnace by 1.4462 two phase stainless steel bars 1 of specification blanking, through the orthogonal pre-strip plate 10 of jumping-up, punching and looping mill rolling.
Step 2: the base of the pre-strip plate of abnormity.
As shown in Figure 2, described core roller die is fixed on core roller 12 by nut 23 and core roller key 24 by rolling in advance interior pattern piece 16, core retainer plate 21, pressure ring 22 machine for rolling ring with home roll mould and core roller die provided in prior art; Described home roll mould by bottom end cover 19, in advance roll external form module 17, upper end cover 18 by home roll overlap 20 and home roll key 25 be fixed on home roll 13, describedly roll in advance interior pattern piece 16 and roll in advance the outer peripheral face of external form module 17 and described upper and lower end cap 18 and 19 surrounds and rolls in advance section groove 11.The outer peripheral face that rolls in advance interior pattern piece 16 described in the present invention has groove surface 16
0, the described outer peripheral face that rolls in advance external form module 17 has fovea superior groove face 17
1with recessed groove face 17
2.
During base, first the pre-strip plate 10 of rectangle is heated to the roll off mould that threading is comprised of home roll mould and core roller die after the deformation temperature of 950 ℃～1160 ℃ in forge furnace, as shown in Figure 2, the pre-strip plate 10 use manipulator covers of this rectangle being put into to the core roller die makes it surround (not shown) on the chassis of rolling in advance interior pattern piece 16 and lying in machine for rolling ring; Start machine for rolling ring and make its home roll 13 by direction rotation shown in Fig. 2, then make core roller 12 to the close rear core roller die of home roll 13 of home roll 13 direction translations and home roll mould matched moulds, the longitudinal cross-section of the pre-strip plate 10 of rectangle is in rolling in advance section groove 11; Simultaneously by machine for rolling ring, drive upper and lower cone roller 14 and 15 to rotate and prepares to clamp the upper and lower end face of the pre-strip plate 10 of rectangle by direction shown in Fig. 2, make two of machine for rolling ring and embrace roller 26(as shown in Figure 3) the support outer shroud side face of the pre-strip plate 10 of rectangle firmly;
Home roll 13 drives the pre-strip plate 10 of rectangle, core roller 12 and two armfuls of rollers 26 to press the direction shown in Fig. 2 and Fig. 3 and rotates, and the upper and lower end face that the upper and lower cone roller 14 and 15 at this moment rotated clamps the pre-strip plate 10 of rectangle of rotation therewith rotates; Core roller 12 radially makes core roller 12 and home roll 13 roll in advance the pre-strip plate 10 of the interior roll off rectangle of section groove 11 with the roll-force of 855KN～1855KN at it towards home roll 13 directions do feed motion, the pre-strip plate 10 of rectangle is with the speed of 10mm/s～16mm/s broadening radially, and has groove surface 16
0roll in advance interior pattern piece 16 and there is fovea superior groove face 17
1, recessed groove face 17
2the roll off that rolls in advance external form module 17 under along the Direction distortion contrary with finish to gauge odd-shaped cross section annular element planform.Its wall thickness reduces gradually, and upper and lower cone roller 14 and 15 and two armfuls of rollers 26 move outward along with the radially broadening of the pre-strip plate 10 of rectangle;
As shown in Figure 4, the pre-strip plate 30 of described abnormity rolls straight-flanked ring S by first to the vertical sectional shape of the pre-strip plate 30 of the abnormity of roll forming in advance
01, second roll in advance special-shaped ring S
02, the 3rd roll in advance straight-flanked ring S
03, the 4th roll in advance special-shaped ring S
04reach the 5th and roll in advance straight-flanked ring S
05stack forms successively; Have on the inner ring surface of the pre-strip plate 30 of abnormity and roll in advance convex table top 30
0, have on its outer ring surface and roll in advance epirelief table top 30
1roll in advance lower convex platform face 30
2, the described epirelief table top 30 that rolls in advance
1roll in advance special-shaped ring S in second
02outer peripheral face, the described lower convex platform face 30 that rolls in advance
2roll in advance special-shaped ring S in the 4th
04outer peripheral face; Roll in advance special-shaped ring S second
02with the 4th roll in advance special-shaped ring S
04between have and roll in advance groove surface 30
3, and described first roll straight-flanked ring S in advance
01with the 5th roll in advance straight-flanked ring S
05shape and size identical, described second are rolled special-shaped ring S in advance
02with the 4th roll in advance special-shaped ring S
04shape and size are identical, for clarity sake, and above-mentioned ring S
01, S
02, S
03, S
04and S
05between with double dot dash line 101,102,103 and 104, separate.
Fig. 5 shows the longitudinal section cross-section structure that finally needs the odd-shaped cross section of rolling and shaping annular element 40, and described odd-shaped cross section annular element 40 is by the first finish to gauge special-shaped ring S
1, the second finish to gauge straight-flanked ring S
2, the 3rd finish to gauge special-shaped ring S
3, the 4th finish to gauge straight-flanked ring S
4and the 5th finish to gauge special-shaped ring S
5stack forms successively, described the 3rd finish to gauge special-shaped ring S
3outer ring surface there is finish to gauge evagination table top 40
3, at described the first finish to gauge special-shaped ring S
1with the 3rd finish to gauge special-shaped ring S
3between there is finish to gauge fovea superior groove face 40
1, at described the 3rd finish to gauge special-shaped ring S
3with the 5th finish to gauge special-shaped ring S
5between there is the recessed groove face 40 of finish to gauge
2, there is finish to gauge inner groove faces 40 on the inner ring surface of odd-shaped cross section annular element 40
0, and described the first finish to gauge special-shaped ring S
1with the 5th finish to gauge special-shaped ring S
5identical, described the second finish to gauge straight-flanked ring S of shape and size
2with the 4th finish to gauge straight-flanked ring S
4shape and size identical.For clarity sake, above-mentioned ring S
1, S
2, S
3, S
4and S
5between also with double dot dash line 101,102,103 and 104, separate.
Fig. 6 shows the longitudinal section comparison diagram of the pre-strip plate 30 of abnormity and odd-shaped cross section annular element 40, as can be seen from Figure 6, and the ring S of the pre-strip plate 30 of above-mentioned abnormity
01, S
02, S
03, S
04, S
05and the ring S of odd-shaped cross section annular element 40
1, S
2, S
3, S
4, S
5can with double dot dash line 101,102,103,104, separate simultaneously.Volume relationship between each ring of the pre-strip plate 30 of abnormity and odd-shaped cross section annular element 40 calculates by following formula:
V
01=V
1－V
0；V
02=V
2＋2V
0；V
03=V
3－2V
0；V
04=V
4＋2V
0；V
05=V
5－V
0。
In formula:
V
01---first rolls straight-flanked ring S in advance
01corresponding annular volume;
V
02---second rolls special-shaped ring S in advance
02corresponding annular volume;
V
03---the 3rd rolls straight-flanked ring S in advance
03corresponding annular volume;
V
04---the 4th rolls special-shaped ring S in advance
04corresponding annular volume;
V
05---the 5th rolls straight-flanked ring S in advance
05corresponding annular volume;
V
1---the first finish to gauge special-shaped ring S
1corresponding annular volume;
V
2---the second finish to gauge straight-flanked ring S
2corresponding annular volume;
V
3---the 3rd finish to gauge special-shaped ring S
3corresponding annular volume;
V
4---the 4th finish to gauge straight-flanked ring S
4corresponding annular volume;
V
5---the 5th finish to gauge special-shaped ring S
5corresponding annular volume;
V
0---roll in advance special-shaped ring S from second
02inside flow to first and roll in advance straight-flanked ring S
01interior predetermined metal flow volume; Equal to roll in advance special-shaped ring S from second
02inside flow to the 3rd and roll in advance straight-flanked ring S
03interior predetermined metal flow volume; Equal to roll in advance special-shaped ring S from the 4th
04inside flow to the 3rd and roll in advance straight-flanked ring S
03interior predetermined metal flow volume; Equal to roll in advance special-shaped ring S from the 4th
04inside flow to the 5th and roll in advance straight-flanked ring S
05interior predetermined metal flow volume.
And, from above-mentioned first, roll in advance straight-flanked ring S
01with the 5th roll in advance straight-flanked ring S
05shape and size are identical, and second rolls special-shaped ring S in advance
02with the 4th roll in advance special-shaped ring S
04shape and size are identical, known: V
01=V
05, V
02=V
04; From above-mentioned the first finish to gauge special-shaped ring S
1with the 5th finish to gauge special-shaped ring S
5shape and size identical, the second finish to gauge straight-flanked ring S
2with the 4th finish to gauge straight-flanked ring S
4shape and size identical, known: V
1=V
5, V
2=V
4.
Step 3: the rolling and shaping of odd-shaped cross section annular element.
As shown in Figure 7, the interior pattern piece 16 of rolling in advance of machine for rolling ring core roller die be replaced by pattern piece 16 in finish to gauge ', pattern piece 16 in described finish to gauge ' outer peripheral face there is evagination table top 16
0; The home roll mould roll in advance external form module 17 be replaced by finish to gauge external form module 17 ', described finish to gauge external form module 17 ' outer peripheral face on there is epirelief table top 17
1with lower convex platform face 17
2; Pattern piece 16 in described finish to gauge ', finish to gauge external form module 17 ' outer peripheral face and described upper end cover 18, bottom end cover 19 surround finish to gauge section groove 11 '.
The pre-strip plate 30 of abnormity is heated in forge furnace after the deformation temperature of 950 ℃～1160 ℃ by the described method of step 2 put into machine for rolling ring make its longitudinal cross-section in finish to gauge section groove 11 ' in, make pattern piece 16 in finish to gauge ' evagination table top 16
0with the pre-strip plate 30 of abnormity roll in advance convex table top 30
0corresponding, finish to gauge external form module 17 ' epirelief table top 17
1with the pre-strip plate 30 of abnormity roll in advance epirelief table top 30
1corresponding, finish to gauge external form module 17 ' lower convex platform face 17
2the lower convex platform face 30 that rolls in advance with the pre-strip plate 30 of abnormity
2corresponding.
Start machine for rolling ring by the described method of step 2 and with the roll-force of 575KN～875KN, the pre-strip plate 30 of abnormity be rolled, as shown in Figure 8, the pre-strip plate 30 of described abnormity finish to gauge section groove 11 ' in, roll in advance convex table top 30 on its inner ring surface
0and roll in advance epirelief table top 30 on outer ring surface
1, roll lower convex platform face 30 in advance
2at first be subject to from pattern piece 16 in finish to gauge ' evagination table top 16
0and finish to gauge external form module 17 ' epirelief table top 17
1, lower convex platform face 17
2rolling (in Fig. 8, F means roll-force), the pre-strip plate 30 of abnormity is at section groove 11 ' interior speed with 4mm/s～10mm/s broadening radially, and flow to less place in more place from metal, the metal in the pre-strip plate 30 of abnormity rolls special-shaped ring S in advance from second
02roll in advance straight-flanked ring S to first
01with the 3rd roll in advance straight-flanked ring S
03flow, roll in advance special-shaped ring S from the 4th simultaneously
04roll in advance straight-flanked ring S to the 3rd
03with the 5th roll in advance straight-flanked ring S
05direction flows; In the operation of rolling, by the accurate control of designing and calculating and machine for rolling ring, roll in advance special-shaped ring S when second
02interior metal flows to first and rolls in advance straight-flanked ring S
01with the 3rd roll in advance straight-flanked ring S
03interior metal volume is respectively predetermined flow volume V
0, and work as the 4th and roll in advance special-shaped ring S
04interior metal flows to the 3rd and rolls in advance straight-flanked ring S
03with the 5th roll in advance straight-flanked ring S
05interior metal volume is respectively predetermined flow volume V
0the time, that is: work as V
1=V
01+ V
0, V
2=V
02-2V
0, V
3=V
03+ 2V
0, V
4=V
04-2V
0, V
5=V
05+ V
0the time, the pre-strip plate 30 of abnormity is become complicated odd-shaped cross section annular element 40 at finish to gauge section groove 11 ' interior by roll off.
In above-mentioned steps 1～3, the finish-forging of this two phase stainless steel or finishing temperature are not less than 950 ℃.
After testing, adopt 1.4462 two phase stainless steel odd-shaped cross section annular elements 40 of said method rolling and shaping, its shape distributes along External Shape, and has higher dimensional accuracy and good interior tissue and performance, has met the instructions for use of this two phase stainless steel annular element fully.
Claims (3)
1. the method for rolling and shaping of a two phase stainless steel Complex Different Shape cross section annular element, comprise being heated to the deformation temperature of 950 ℃～1160 ℃ by the two phase stainless steel bar (1) of specification blanking by the step of the orthogonal pre-strip plate of jumping-up, punching and looping mill rolling (10), it is characterized in that, the method is further comprising the steps of:
Heat the pre-strip plate of described rectangle (10) and make its longitudinal cross-section in the rolling in advance in section groove (11) of roll off mould to putting into machine for rolling ring after above-mentioned deformation temperature, the described section groove (11) that rolls in advance is by having groove surface (16
0) roll in advance interior pattern piece (16), there is fovea superior groove face (17
1) and recessed groove face (17
2) roll in advance external form module (17) and upper end cover (18) and bottom end cover (19) surround;
Start machine for rolling ring and make core roller (12) and home roll (13) the roll-force pre-strip plate of roll off rectangle (10) in rolling in advance section groove (11) with 855KN～1855KN, the pre-strip plate of rectangle (10) is with the speed of 10mm/s～16mm/s broadening radially, and is deformed into the pre-strip plate (30) of abnormity along the direction contrary with finish to gauge odd-shaped cross section annular element (40) planform by predetermined volume flow rolling in advance interior pattern piece (16) and roll in advance under the roll off of external form module (17); The pre-strip plate of described abnormity (30) rolls straight-flanked ring (S in advance by first
01), second roll in advance special-shaped ring (S
02), the 3rd roll in advance straight-flanked ring (S
03), the 4th roll in advance special-shaped ring (S
04) and the 5th roll in advance straight-flanked ring (S
05) superpose and form successively; Have and roll in advance convex table top (30 on the inner ring surface of the pre-strip plate of abnormity (30)
0), have on its outer ring surface and roll in advance epirelief table top (30
1) and roll in advance lower convex platform face (30
2), the described epirelief table top (30 that rolls in advance
1) roll in advance special-shaped ring (S in second
02) outer peripheral face, the described lower convex platform face (30 that rolls in advance
2) roll in advance special-shaped ring (S in the 4th
04) outer peripheral face; Roll in advance special-shaped ring (S second
02) and the 4th roll in advance special-shaped ring (S
04) between have and roll in advance groove surface (30
3), and described first roll straight-flanked ring (S in advance
01) with the 5th roll in advance straight-flanked ring (S
05) shape and size identical, described second roll special-shaped ring (S in advance
02) with the 4th roll in advance special-shaped ring (S
04) shape and size are identical;
The interior pattern piece of rolling in advance of machine for rolling ring core roller die (16) is replaced by pattern piece (16 ') in finish to gauge, and in described finish to gauge, the outer peripheral face of pattern piece (16 ') has evagination table top (16
0); The external form module (17) of rolling in advance of home roll mould is replaced by finish to gauge external form module (17 '), on the outer peripheral face of described finish to gauge external form module (17 '), there is epirelief table top (17
1) and lower convex platform face (17
2); In described finish to gauge, outer peripheral face and described upper end cover (18), the bottom end cover (19) of pattern piece (16 '), finish to gauge external form module (17 ') surround finish to gauge section groove (11 ');
The pre-strip plate (30) of abnormity is heated in forge furnace after the deformation temperature of 950 ℃～1160 ℃ and puts into machine for rolling ring and make its longitudinal cross-section in finish to gauge section groove (11 '), make the evagination table top (16 of pattern piece (16 ') in finish to gauge
0) with the pre-strip plate (30) of abnormity roll in advance convex table top (30
0) corresponding, the epirelief table top (17 of finish to gauge external form module (17 ')
1) with the pre-strip plate (30) of abnormity roll in advance epirelief table top (30
1) corresponding, the lower convex platform face (17 of finish to gauge external form module (17 ')
2) and the special-shaped lower convex platform face (30 that rolls in advance of strip plate (30) in advance
2) corresponding;
Start machine for rolling ring and with the roll-force of 575KN～875KN, the pre-strip plate of abnormity (30) is rolled, the pre-strip plate of described abnormity (30), in finish to gauge section groove (11 '), rolls convex table top (30 on its inner ring surface in advance
0) and outer ring surface on roll in advance epirelief table top (30
1), roll lower convex platform face (30 in advance
2) at first be subject to the evagination table top (16 from pattern piece (16 ') in finish to gauge
0) and the epirelief table top (17 of finish to gauge external form module (17 ')
1), lower convex platform face (17
2) rolling, the pre-strip plate (30) of abnormity is with the speed of 4mm/s～10mm/s broadening radially section groove (11 ') in, its interior metal flow is rolled special-shaped ring (S in advance from second
02) roll in advance straight-flanked ring (S to first
01) and the 3rd roll in advance straight-flanked ring (S
03) flow, roll in advance special-shaped ring (S from the 4th simultaneously
04) roll in advance straight-flanked ring (S to the 3rd
03) and the 5th roll in advance straight-flanked ring (S
05) direction flows; Roll in advance special-shaped ring (S when second
02) in metal flow to first and roll in advance straight-flanked ring (S
01) and the 3rd roll in advance straight-flanked ring (S
03) in metal volume be respectively predetermined flow volume V
0, and work as the 4th and roll in advance special-shaped ring (S
04) in metal flow to the 3rd and roll in advance straight-flanked ring (S
03) and the 5th roll in advance straight-flanked ring (S
05) in metal volume be respectively predetermined flow volume V
0the time, the pre-strip plate (30) of abnormity is become complicated odd-shaped cross section annular element (40) by roll off in finish to gauge section groove (11 '); Described odd-shaped cross section annular element (40) is by the first finish to gauge special-shaped ring (S
1), the second finish to gauge straight-flanked ring (S
2), the 3rd finish to gauge special-shaped ring (S
3), the 4th finish to gauge straight-flanked ring (S
4) and the 5th finish to gauge special-shaped ring (S
5) superpose and form successively, described the 3rd finish to gauge special-shaped ring (S
3) outer ring surface there is finish to gauge evagination table top (40
3), at described the first finish to gauge special-shaped ring (S
1) and the 3rd finish to gauge special-shaped ring (S
3) between there is finish to gauge fovea superior groove face (40
1), at described the 3rd finish to gauge special-shaped ring (S
3) and the 5th finish to gauge special-shaped ring (S
5) between there is the recessed groove face (40 of finish to gauge
2), there is finish to gauge inner groove faces (40 on the inner ring surface of described odd-shaped cross section annular element (40)
0), and described the first finish to gauge special-shaped ring (S
1) and the 5th finish to gauge special-shaped ring (S
5) identical, described the second finish to gauge straight-flanked ring (S of shape and size
2) and the 4th finish to gauge straight-flanked ring (S
4) shape and size identical.
2. the method for rolling and shaping of two phase stainless steel Complex Different Shape cross section annular element according to claim 1, it is characterized in that: the material trademark of described two phase stainless steel is 1.4462.
3. according to the method for rolling and shaping of the described two phase stainless steel Complex Different Shape of claim 1 or 2 cross section annular element, it is characterized in that: the volume relationship between the pre-strip plate of described abnormity (30) and described odd-shaped cross section annular element (40) calculates by following formula:
V
01=V
1－V
0；V
02=V
2＋2V
0；V
03=V
3－2V
0；V
04=V
4＋2V
0；V
05=V
5－V
0；
In formula:
V
01---first rolls straight-flanked ring (S in advance
01) corresponding annular volume;
V
02---second rolls special-shaped ring (S in advance
02) corresponding annular volume;
V
03---the 3rd rolls straight-flanked ring (S in advance
03) corresponding annular volume;
V
04---the 4th rolls special-shaped ring (S in advance
04) corresponding annular volume;
V
05---the 5th rolls straight-flanked ring (S in advance
05) corresponding annular volume;
V
1---the first finish to gauge special-shaped ring (S
1) corresponding annular volume;
V
2---the second finish to gauge straight-flanked ring (S
2) corresponding annular volume;
V
3---the 3rd finish to gauge special-shaped ring (S
3) corresponding annular volume;
V
4---the 4th finish to gauge straight-flanked ring (S
4) corresponding annular volume;
V
5---the 5th finish to gauge special-shaped ring (S
5) corresponding annular volume;
V
0---roll in advance special-shaped ring (S from second
02) in flow to first and roll in advance straight-flanked ring (S
01) interior predetermined metal flow volume; Equal to roll in advance special-shaped ring (S from second
02) in flow to the 3rd and roll in advance straight-flanked ring (S
03) interior predetermined metal flow volume; Equal to roll in advance special-shaped ring (S from the 4th
04) in flow to the 3rd and roll in advance straight-flanked ring (S
03) interior predetermined metal flow volume; Equal to roll in advance special-shaped ring (S from the 4th
04) in flow to the 5th and roll in advance straight-flanked ring (S
05) interior predetermined metal flow volume.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210532127.9A CN103100619B (en) | 2012-12-12 | 2012-12-12 | Rolling forming method for biphase stainless steel ring piece with complex irregular section |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210532127.9A CN103100619B (en) | 2012-12-12 | 2012-12-12 | Rolling forming method for biphase stainless steel ring piece with complex irregular section |
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| CN103100619A true CN103100619A (en) | 2013-05-15 |
| CN103100619B CN103100619B (en) | 2014-12-17 |
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| CN103302462A (en) * | 2013-07-02 | 2013-09-18 | 江苏翔能科技发展有限公司 | Small abnormal-shape combined forging and ring-rolling process |
| CN106695256A (en) * | 2016-12-22 | 2017-05-24 | 江苏翔能科技发展有限公司 | Ring rolling technology for profiling and shaping large-tapered wind-electricity bearing inner ring |
| CN107497979A (en) * | 2016-12-01 | 2017-12-22 | 贵州安大航空锻造有限责任公司 | Low stress stainless steel ring manufacture method |
| CN112756917A (en) * | 2020-12-31 | 2021-05-07 | 安徽砼宇特构科技有限公司 | Production process of stainless steel bushing ring |
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| CN112756917A (en) * | 2020-12-31 | 2021-05-07 | 安徽砼宇特构科技有限公司 | Production process of stainless steel bushing ring |
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| CN103100619B (en) | 2014-12-17 |
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