CN201889385U - Finish-forging die structure of stainless steel die forging product - Google Patents
Finish-forging die structure of stainless steel die forging product Download PDFInfo
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- CN201889385U CN201889385U CN2010206096166U CN201020609616U CN201889385U CN 201889385 U CN201889385 U CN 201889385U CN 2010206096166 U CN2010206096166 U CN 2010206096166U CN 201020609616 U CN201020609616 U CN 201020609616U CN 201889385 U CN201889385 U CN 201889385U
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Abstract
The utility model relates to a die structure for processing a die forging product, in particular to a finish-forging die structure of a stainless steel die forging product, which comprises a finish-forging forming die and an edge-cutting die, wherein the finish-forging product has a demoulding slope which is tilted in the up-and-down direction and has a bonding surface defined by the demoulding slope; a flash groove of a parting face of an upper die and a lower die of the finish-forging forming die is deflected upward or downward towards one side of the bonding face of the demoulding slope of the finish-forging product; the contour line length of a die cavity on one side where the die cavity depth is reduced after deflection is less than that of a die cavity on the other side; the contour line length refers to the combination of the lengths of the die cavity in the orthogonal two directions and the circumference of the whole contour line; and the shape and the size of the contour line of a lower die of the edge-cutting die are the same as those of the die cavity on one side where the die cavity depth is increased after the deflection of the finish-forging forming die. By adopting the technical scheme in the die design, the finish-forging die structure can achieve the purpose of precision processing of the forging process and the energy-saving effect without adding any procedure or material.
Description
Technical field
The utility model relates to a kind of forging part processed mould structure and trimming technology, specifically relates to the finisher mould structure and the trimming technology of stainless steel-like forging part.
Background technology
The stainless steel forging part is because it has higher corrosion resistance, be widely used, be usually used in making in the parts such as housing of gas, liquid detecting instrument table mechanism, though shape is uncomplicated, but mechanical property, the pressure that bears, certainly also very high to the requirement of the presentation quality of this forging especially trimming quality: require otch smooth, no burr crackle, burr zone of fracture and burr, finish-forging and trimming technology belong to exigent operation in stainless steel forging part forging process.
At present, axial length is 95～150mm, diameter or width are the medium and small shape stainless steel-like parts of 60～110mm, all all adopt 316 and the 316L stainless steel forgings such as the instrument part trans-corporation of many process gas, liquid detecting instrument table in the world and the many parts of robot, market demand is very big, therefore change slightly in its processing technology of process of manufacture, quality has raising slightly, and cost has reduction will produce great market clout and economic benefits slightly.But stainless steel is polished in a large number through needing to carry out the forging burr after forging, cutting edge, and workload is very big, and brings a large amount of dust, work under bad environment, brings harm for an operation person.
The prior art of the processing technology of stainless steel forging part is that at first the stainless steel bar with circle blocks into blank, heating, ejection, blocking, finish-forging, side cut, shaping both at home and abroad.This technology is that the blank that ejection is good is placed in the blocker, then, along with the descending of blocking patrix exerted pressure to blank gradually, blank just squeezed respectively and the counter die cavity of clamp-oning counterdie and patrix in, form the product forging through finish-forging, side cut, shaping.
Yet, because the forging characteristics of stainless steel material: thermal conductivity is low, plasticity is low, viscosity is big, easy sticking to mould, cause die life very low, especially the finish-forging patrix life-span lower, the easier change of size at last die orifice flash gutters place is big, die life is generally below 1000, cause that burr crack on the later process side cut forging, defective such as zone of fracture and burr, influence forging surface quality.
Traditional stainless steel finisher mould is the same with other carbon steel forging, the die cavity flash gutters size of upper and lower mould is the same, the length of die orifice flash gutters place part die cavity, width dimensions size unanimity promptly, the distribution of forging flash also is that horizontal parting face center upper and lower mould respectively accounts for half of flash thickness.The many data of this process are all the same, publish in China Machine Press, and forging and pressing association of Chinese Mechanical Engineering Society volume " done to discuss and introduce by the 624th page of " finish impression " part of the forging and pressing handbook first volume.
Stainless steel trimming technology mode is also the same with the carbon steel forging, and two kinds of methods are arranged.A kind of is to adopt hot trimming, usually should cut edge by finish-forging counterdie die joint shape being not less than under 800 ℃ of temperature, another kind of employing cold-trim(ming), usually cut edge at normal temperatures, because the forging shape differs, dimensional contraction differs, the side cut burr is bigger, brings the polishing amount bigger, and manufacturing enterprise does not generally all adopt cold-trim(ming).
But, under the mould structure condition of prior art, if use the hot trimming method, since the side cut of stainless steel forgings need be more much bigger than other carbon steel forging shearing force, the easier first half that causes forging in drift, form jumping-up and distortion, burr place plucking, tear and produce the burr that is attached on the forging first half.And if the method for employing cold-trim(ming) then also will inevitably cause side cut place plucking and tear.So using this dual mode to cut edge all must remove the plucking that produces the burr place, tear and burr with the method for postorder polishing, otherwise can produce rust staining after the solution treatment of postorder and Passivation Treatment causes product defective, can cause simultaneously produce turnover period long, cost is high, presentation quality is poor, the artificial polishing of burr is also unsatisfactory, the forging surface irregularity, therefore, further ameliorative measure is wished to have in this area.
Summary of the invention
The purpose of this utility model provides a kind of stainless steel forgings hot trimming that can solve and causes side cut place plucking easily, tears and produce the burr that is attached on the forging; Cold-trim(ming) causes the side cut place plucking and the problem of tearing, and has saved postorder abrasive material expense simultaneously, shortens production life cycle, has improved a kind of stainless steel forging part finisher mould structure of product appearance quality.
The purpose of this utility model is realized by following technical scheme:
A kind of finisher mould structure of stainless steel-like forging part comprises finish-forging shaping dies and shaving die;
The draw taper that has a down dip on the finish-forging forging has reaches the faying face of draw taper formation up and down, it is characterized in that:
The flash gutters of the upper and lower mould die joint of finish-forging shaping dies is to the faying face of finish-forging forging draw taper, and a lateral deviation is moved up or down;
Skew back depth of cavity shoals the outline line length of a side die cavity less than opposite side;
Described outline line length means the length that comprises die cavity quadrature both direction and total outline line perimeter length;
The counterdie outline line shape of described shaving die, size are got die cavity outline line shape, size that finish-forging shaping dies skew back depth of cavity deepens a side.
Further, the flash gutters of the upper and lower mould die joint of described finish-forging shaping dies equals the thickness of 1/2nd flash gutters to the distance of the faying face skew of finish-forging forging draw taper.
Further, the lateral deviation of the flash gutters of described finish-forging shaping dies in patrix or counterdie moved, and skew back depth of cavity shoals the die cavity quadrature length of a side less than opposite side 0.5～0.9mm.
Further, described flash gutters thickness is 2～5mm.
Further, the flash gutters of described finish-forging shaping dies is moved to counterdie one lateral deviation.
Further, described shaving die side cut temperature range is 580～600 ℃.
As the finish-forging forging, in order stamping die to be the draw taper that has to tilt to forging central authorities from upper and lower mould, the inclined plane of draw taper has formed a faying face up and down.As prior art, the overlap of forging die is to be symmetrically located at the faying face place, and the thickness of overlap is arranged in the both sides of faying face symmetrically.But, in following road side cut operation, the side cut upper and lower mould profile of symmetrical up and down size shape size, the first half of forging in drift, form jumping-up and distortion, overlap place plucking, tear and produce viscous, be attached to the circle of one on the forging first half and form the viscous mass burr, need carry out grinding process again, take a lot of work, time-consuming, influence surface accuracy.
Adopt the utility model, by the mould structure of upper and lower mould according to described regulation, the overlap of finish-forging forging is offseted to one side, because the faying face of finish-forging forging draw taper does not become, cause the shoal outline line length of a side die cavity of depth of cavity to diminish after the position of overlap offsets to one side, it is big that opposite side outline line length becomes.
When entering next step side cut operation, " the counterdie outline line shape of described shaving die; size; get the die cavity outline line shape that finish-forging shaping dies skew back depth of cavity deepens a side; size; " just the big side of outline line length change is in counterdie, when punching and edge-cutting, the first half of forging forms jumping-up and distortion in drift, the plucking at overlap place, tear and produce viscous, being attached to one on forging first half circle forms the viscous mass burr and has filled up just in the dimensional space that patrix one circle diminishes, when patrix continues to move down, the viscous mass burr of this circle is by complete, extruding glossily, wrap up in and be attached to finish-forging forging periphery, finished product no longer needs polishing just can reach smooth, appearance attractive in appearance.
Superiority of the present utility model and beneficial effect, this stainless steel finisher mould structure is compared with trimming technology with traditional stainless steel finisher mould with trimming technology, has following creativeness and advance:
The utility model stainless steel finish-forging finishing die mould structure has changed the same structure of die cavity overlap place size of the finisher upper and lower mould of traditional handicraft, the substitute is that die orifice flash gutters place directly makes by the hot forging size on finish-forging is shaped, on a side mold of finish-forging finishing die, so just make the hot forging length at this side form mouth flash gutters place of finish-forging mould, width dimensions littler the whole distribution of offsets of flash thickness size than the size at finish-forging patrix opposite side die orifice flash gutters place.
During side cut with after the finish-forging shaping dies skew, the finish-forging forging that depth of cavity deepens side shaping contacts with the die cavity of side cut upper punch, the side cut upper punch presses down the outside enlargement deformation of the hot forging first half in the time of so just can having offset owing to side cut, particularly reduce jumping-up and bring drastic deformation, thereby obviously improve trimming quality at hot forging first half overlap place.
This finisher mould structure has thoroughly solved the stainless steel forgings hot trimming and has caused side cut place plucking easily, tears and produced the burr that is attached on the forging; Cold-trim(ming) causes side cut place plucking and tears; All must remove the plucking that produces, tear and burr, cause product defective otherwise can after the solid solution pickling of postorder, produce rust staining with the method for postorder polishing; Can cause simultaneously the production cycle long, cost is high, the problem of presentation quality difference, has saved follow-up hacking greatly, removes the machining period of overlap, the product appearance quality improves greatly.
In the side cut operation, on the architecture basics that has adopted aforementioned finish-forging shaping dies, stainless steel side cut temperature of the present utility model can reduce greatly, scope is 580～600 ℃, be not less than low 200 ℃ of 800 ℃ of side cut temperature than conventional temperature, reduce the distortion of cutting edge, saved the energy, meet product requirement through check mechanical performance, metallographic structure etc.
The utility model does not increase any operation, material, just adopts specification requirement of the present utility model in the mould design, just reaches and realized the retrofit of Forging Technology, and is energy-conservation again.
Description of drawings
The forging front view that Fig. 1 processes for prior art finish-forging shaping dies, overlap is symmetrically located at demoulding faying face central authorities as can be seen;
The forging front view that Fig. 2 processes for the utility model finish-forging shaping dies can be told overlap and depart from forging demoulding faying face, and overlap is skew upwards;
Fig. 3 is the structural representation of the finish-forging shaping dies of prior art stainless steel-like forging part, and finish-forging shaping upper and lower mould die orifice flash gutters is consistent with demoulding faying face;
Fig. 4 is an embodiment of the finisher mould structure of the utility model stainless steel-like forging part, the structural representation of finish-forging shaping dies wherein, finish-forging shaping upper and lower mould die orifice flash gutters upwards departs from demoulding faying face, can show among the figure: upward L length shortens in the model cavity, and the degree of depth also shoals.
Fig. 5 is the side cut status architecture schematic diagram of prior art stainless steel-like forging part shaving die, and the right side is for before cutting edge, and the left side is for after cutting edge;
Fig. 6 is an embodiment of the finisher mould structure of the utility model stainless steel-like forging part, shaving die side cut status architecture schematic diagram wherein, and the right side is for before cutting edge, and the left side is for after cutting edge;
Fig. 7 is the enlarged drawing at H position among Fig. 5, as can be seen side cut place plucking, tear and produce the burr that is attached on the forging;
Fig. 8 is the enlarged drawing at G position among Fig. 6, and side cut place attaching thing not only tails off as can be seen, and closely is squeezed in the forging periphery, presents slick and sly appearance.
Among the figure, L is the length of finish-forging forging faying face, b is the flash thickness of finish-forging forging, H is the degree of depth of model cavity on the prior art finish-forging forging, h is the degree of depth of prior art finish-forging forging counterdie die cavity, H+h+b is the total height of finish-forging forging, and H-1/2 is the degree of depth of model cavity on the utility model finish-forging forging, and h+1/2 is the degree of depth of the utility model finish-forging forging counterdie die cavity.
The specific embodiment
Below contrast accompanying drawing, the utility model is elaborated.
A kind of finisher mould structure of stainless steel-like forging part comprises finish-forging shaping dies and shaving die;
The draw taper that has a down dip on the finish-forging forging has reaches the faying face of draw taper formation up and down,
The flash gutters of the upper and lower mould die joint of finish-forging shaping dies is to the faying face of finish-forging forging draw taper, and a lateral deviation is moved up or down;
Skew back depth of cavity shoals the outline line length of a side die cavity less than opposite side;
Described outline line length means the length that comprises die cavity quadrature both direction and total outline line perimeter length;
The counterdie outline line shape of described shaving die, size are got die cavity outline line shape, size that finish-forging shaping dies skew back depth of cavity deepens a side.
The flash gutters of the upper and lower mould die joint of described finish-forging shaping dies equals the thickness of 1/2nd flash gutters to the distance of the faying face skew of finish-forging forging draw taper.With calculating and test, the distance of skew is got the thickness of 1/2nd flash gutters and is advisable.
The lateral deviation of the flash gutters of described finish-forging shaping dies in patrix or counterdie moved, and skew back depth of cavity shoals the die cavity quadrature length of a side less than opposite side 0.5～0.9mm.Most of product is in the processing of adopting technical solutions of the utility model, and is suitable to be of a size of in this scope, obtains better effects.
Described flash gutters thickness is 2～5mm.This is normally used size.
The flash gutters of described finish-forging shaping dies is moved to counterdie one lateral deviation.Usually during the side cut operation, patrix moves downward, stressed big, the easy mushrooming deformation of forging, allow patrix in the side cut operation put into the less forging of outline line length of the more shallow side die cavity of the degree of depth in order to reduce the distortion of cutting edge, therefore, when being shaped, finish-forging allow the flash gutters of finish-forging shaping dies move to counterdie one lateral deviation, make that the profile length of forging diminishes in the counterdie, forging after will being shaped then stands up up, patrix punching press in the favourable side cut is thick to forging the first half pier when cutting edge, extruding, obtain forging final finished preferably, also prolonged the life-span of finish-forging shaping patrix.
Described shaving die side cut temperature range is 580～600 ℃.Through substantive test, the forging that adopts finish-forging finishing die of the present utility model to be shaped when cutting edge, reduces the distortion of cutting edge, and can reduce the side cut temperature requirement, and is favourable energy-conservation.
Claims (6)
1. the finisher mould structure of a stainless steel-like forging part comprises finish-forging shaping dies and shaving die;
The draw taper that has a down dip on the finish-forging forging has reaches the faying face of draw taper formation up and down, it is characterized in that:
The flash gutters of the upper and lower mould die joint of finish-forging shaping dies is to the faying face of finish-forging forging draw taper, and a lateral deviation is moved up or down;
Skew back depth of cavity shoals the outline line length of a side die cavity less than opposite side;
Described outline line length means the length that comprises die cavity quadrature both direction and total outline line perimeter length;
The counterdie outline line shape of described shaving die, size are got die cavity outline line shape, size that finish-forging shaping dies skew back depth of cavity deepens a side.
2. according to the finisher mould structure of the described stainless steel-like forging part of claim 1, it is characterized in that the flash gutters of the upper and lower mould die joint of described finish-forging shaping dies equals the thickness of 1/2nd flash gutters to the distance of the faying face skew of finish-forging forging draw taper.
3. according to the finisher mould structure of the described stainless steel-like forging part of claim 1; the lateral deviation of flash gutters in patrix or counterdie that it is characterized in that described finish-forging shaping dies moved, and skew back depth of cavity shoals the die cavity quadrature length of a side less than opposite side 0.5～0.9mm.
4. according to the finisher mould structure of the described stainless steel-like forging part of claim 1, it is characterized in that described flash gutters thickness is 2～5mm.
5. according to the finisher mould structure of the described stainless steel-like forging part of claim 1, it is characterized in that the flash gutters of described finish-forging shaping dies is moved to counterdie one lateral deviation.
6. according to the finisher mould structure of the described stainless steel-like forging part of claim 1, it is characterized in that described shaving die side cut temperature range is 580～600 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206096166U CN201889385U (en) | 2010-11-16 | 2010-11-16 | Finish-forging die structure of stainless steel die forging product |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206096166U CN201889385U (en) | 2010-11-16 | 2010-11-16 | Finish-forging die structure of stainless steel die forging product |
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| CN201889385U true CN201889385U (en) | 2011-07-06 |
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| CN2010206096166U Expired - Lifetime CN201889385U (en) | 2010-11-16 | 2010-11-16 | Finish-forging die structure of stainless steel die forging product |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102463316A (en) * | 2010-11-16 | 2012-05-23 | 上海交大中京锻压有限公司 | Finish forging die structure of stainless steel die forging |
| CN103042150A (en) * | 2012-12-25 | 2013-04-17 | 国营第六一六厂 | Square insert forging die with double-sided finish forging impression |
| CN103192014A (en) * | 2013-03-21 | 2013-07-10 | 无锡透平叶片有限公司 | Structure of titanium alloy large-scale rib die forging |
| CN105798222A (en) * | 2016-05-05 | 2016-07-27 | 中国科学院金属研究所 | Hobbing cutter ring forging mold and forging method for shield tunneling machine |
| CN106623749A (en) * | 2016-11-09 | 2017-05-10 | 东风锻造有限公司 | Method for forging connection rod and capable of realizing whole flow line of forging parting surface |
| CN106734799A (en) * | 2016-12-08 | 2017-05-31 | 山东大学 | A kind of forging method of bullet train axle box |
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2010
- 2010-11-16 CN CN2010206096166U patent/CN201889385U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102463316A (en) * | 2010-11-16 | 2012-05-23 | 上海交大中京锻压有限公司 | Finish forging die structure of stainless steel die forging |
| CN102463316B (en) * | 2010-11-16 | 2014-04-16 | 上海交大中京锻压有限公司 | Finishing die mold structure for stainless steel die forging |
| CN103042150A (en) * | 2012-12-25 | 2013-04-17 | 国营第六一六厂 | Square insert forging die with double-sided finish forging impression |
| CN103042150B (en) * | 2012-12-25 | 2015-03-18 | 国营第六一六厂 | Square insert forging die with double-sided finish forging impression |
| CN103192014A (en) * | 2013-03-21 | 2013-07-10 | 无锡透平叶片有限公司 | Structure of titanium alloy large-scale rib die forging |
| CN105798222A (en) * | 2016-05-05 | 2016-07-27 | 中国科学院金属研究所 | Hobbing cutter ring forging mold and forging method for shield tunneling machine |
| CN105798222B (en) * | 2016-05-05 | 2018-01-16 | 中国科学院金属研究所 | A kind of hob cutter for shield machine cutter ring forging mold and forging method |
| CN106623749A (en) * | 2016-11-09 | 2017-05-10 | 东风锻造有限公司 | Method for forging connection rod and capable of realizing whole flow line of forging parting surface |
| CN106734799A (en) * | 2016-12-08 | 2017-05-31 | 山东大学 | A kind of forging method of bullet train axle box |
| CN106734799B (en) * | 2016-12-08 | 2018-06-12 | 山东大学 | A kind of forging method of bullet train axle box |
| CN113634701A (en) * | 2021-08-19 | 2021-11-12 | 北京北方车辆集团有限公司 | Forging and demolding method for electric screw press without upward ejection |
| CN113634701B (en) * | 2021-08-19 | 2023-08-15 | 北京北方车辆集团有限公司 | Forging and demolding method of electric screw press without upper ejection |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110706 Effective date of abandoning: 20140416 |
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| RGAV | Abandon patent right to avoid regrant |