CN1781623B - Method for producing continuous casting crystallizing roll - Google Patents
Method for producing continuous casting crystallizing roll Download PDFInfo
- Publication number
- CN1781623B CN1781623B CN 200410084782 CN200410084782A CN1781623B CN 1781623 B CN1781623 B CN 1781623B CN 200410084782 CN200410084782 CN 200410084782 CN 200410084782 A CN200410084782 A CN 200410084782A CN 1781623 B CN1781623 B CN 1781623B
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- China
- Prior art keywords
- crystallization
- roller
- core
- roll
- cooling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 238000009749 continuous casting Methods 0.000 title claims abstract description 15
- 238000002425 crystallisation Methods 0.000 claims abstract description 81
- 230000008025 crystallization Effects 0.000 claims abstract description 81
- 238000001816 cooling Methods 0.000 claims abstract description 65
- 229910052751 metal Inorganic materials 0.000 claims abstract description 28
- 239000002184 metal Substances 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000011248 coating agent Substances 0.000 claims abstract description 6
- 238000000576 coating method Methods 0.000 claims abstract description 6
- 239000011148 porous material Substances 0.000 claims abstract description 4
- 239000002923 metal particle Substances 0.000 claims abstract 8
- 239000013078 crystal Substances 0.000 claims abstract 7
- 239000007789 gas Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 4
- 239000011651 chromium Substances 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 239000003570 air Substances 0.000 claims description 3
- 239000001307 helium Substances 0.000 claims description 3
- 229910052734 helium Inorganic materials 0.000 claims description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 229910000640 Fe alloy Inorganic materials 0.000 claims 1
- 239000000498 cooling water Substances 0.000 description 13
- 239000013528 metallic particle Substances 0.000 description 13
- 230000015572 biosynthetic process Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 239000007921 spray Substances 0.000 description 5
- 239000011247 coating layer Substances 0.000 description 4
- 238000010288 cold spraying Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910001021 Ferroalloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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- Rolls And Other Rotary Bodies (AREA)
- Continuous Casting (AREA)
Abstract
连铸结晶辊制造方法，首先在结晶辊的辊芯上沿辊芯轴向开进、出水孔，在辊芯壁上开有导水孔，分别连通进、出水孔及辊芯外表面；在结晶辊的辊芯外表面上安装金属管，分别通过辊芯壁上的导水孔与进、出水孔连通构成多个冷却回路，形成结晶辊冷却系统；采用冷气动力喷涂，以大于1.0MPa压力气体驱动金属颗粒以高速撞击结晶辊辊芯外表面，金属颗粒发生足够的变形而粘结在结晶辊辊芯表面和冷却回路外表面上，填充孔隙，进而形成足够的涂层厚度将冷却回路完全掩埋，并形成足够厚度的结晶辊辊套，完成结晶辊的制造。
The continuous casting crystallization roll manufacturing method, firstly, on the roll core of the crystallization roll, the inlet and outlet holes are made along the axial direction of the roll core, and the water guide holes are opened on the wall of the roll core, respectively connecting the inlet and outlet holes and the outer surface of the roll core; Metal pipes are installed on the outer surface of the core of the crystallization roll, and the water guide holes on the core wall of the roll are respectively connected with the inlet and outlet holes to form multiple cooling circuits, forming a cooling system for the crystallization roll; The gas drives the metal particles to hit the outer surface of the crystallization roller core at high speed, and the metal particles are deformed enough to bond on the surface of the crystallization roller core and the outer surface of the cooling circuit, filling the pores, and then forming a sufficient coating thickness to completely cover the cooling circuit. Bury, and form a sufficient thickness of the crystal roll sleeve, complete the manufacture of the crystal roll.
Description
Technical field
The present invention relates to machinery manufacturing industry, Ferrous Metallurgy, metal continuous cast, particularly relate to sheet metal (band) continuous casting, also be particularly related to the metal cold spray technique with crystallization roller manufacturing technology.
Background technology
The continuous casting technology of metal sheet band (plate) has efficiently, low consumption, characteristic cheaply, is the countries in the world man new technology and the new technology of falling over each other to develop in recent years.Wherein the crystallization roller is one of critical component in strip (plate) the continuous casting plant equipment.Its basic principle is that molten steel passes through current distribution device and gets into the molten bath of being made up of crystallization roller and the side seal board of two reverse rotations, and liquid metal coagulates with one-tenth at the crystallization roll surface through cooling fast and has certain thickness base shell, through roll close after formation strip (plate).The basic structure of crystallization roller mainly is made up of roller core, roller shell, referring to Fig. 1.Its crystallization roll sleeve material mostly adopts the Cu alloy material manufacturing, and its roller core adopts the stainless steel manufacturing usually.Roller core and roller shell link together through the mode of mechanical mode or welding.
Because crystallization roller roll surface directly contacts with molten metal, elevated temperature strength and heat-conductive characteristic are the most important requirements of crystallization roller case material.Owing in this technical process, casting is accomplished simultaneously simultaneously, etch and wearing and tearing that the crystallization roller will can bear certain roll-force, molten steel.Crystallization roller end face directly contacts with the side seal material, and the wearability of crystallization roll end and low-cost repairing the thereof are very important.Usually the inboard of crystallization roll sleeve is the water-cooled face, and the designing requirement of effigurate water seam, so the crystallization roll sleeve is not only wanted good heat conductivity, and requires the inner water seam design of roller shell can guarantee that cooling evenly.Therefore the manufacturing of crystallization roll sleeve is the key of decision crystallization roll sleeve performance.
The manufacturing of crystallization roll sleeve at present adopts continuous casting billet through behind the forging forming more, in the mode of the inner direct mechanical processing of roller shell cooling water pipe.Adopt the axial type of cooling mostly, for example patent US5887644 is employed in the method and the interior roller outer surface formation bosh of crystallization roller shell inner surface machined grooves; Patent US6241002 then is the processing circular hole in the roller core outer surface district, forms bosh with the roller shell inner surface; Patent US5651410 adopts roller core outer surface and roller shell inner surface space to form bosh; Patent US5152333 processes the cooling water seam on the crystallization roll sleeve; Patent US4773468 is employed in semicircle, the square or trapezoidal groove of roller core outer surface processing respectively, and the hole that utilizes groove to cooperate the back to form with the overcoat roller forms the cooling water seam; Also have through in groove, adding wedge rod or filler rod, utilize the gap that wedge rod or filler rod are cut apart roller core outer surface and roller shell inner surface to form the chilled(cooling) water return (CWR).It is almost equal with the roll surface length of crystallization roller that the characteristic of these patents is the length of cooling water seam, in the shutoff of cooling tube two ends.Cooling water gets into from an end that cools off water pipe, and the other end from the crystallization roller after the whole roll surface length of flowing through is discharged.Because water seam length is longer, mechanical processing difficulty is very big.Also machining accuracy is required very highly when utilizing the space of roller core outer surface and roller shell inner surface to form cooling circuit, difficulty of processing is big, forms the mixed flow between the loop easily, reduces cooling effectiveness.
The main cause that forms above-mentioned defective is that machining process is adopted in the manufacturing of crystallization roller, and complicated cooling water seam design receives the restriction of processing method to a certain extent.
Summary of the invention
In view of present present situation, the object of the present invention is to provide a kind of manufacturing approach that is used for the crystallization roller, have the crystallization roll sleeve manufacturing technology of complex internal cooling water seam design with solution.
For achieving the above object, method for producing continuous casting crystalli-zing roll of the present invention may further comprise the steps,
In the roller core upper edge of crystallization roller roller core shaft to drive into, apopore, on the roller core wall, have water-guiding hole, be communicated with into and out of the water hole respectively and roller core outer surface;
On the roller core outer surface of crystallization roller, metal tube is installed, respectively through the water-guiding hole on the roller core wall with is communicated with a plurality of cooling circuits of formation into and out of the water hole, formation crystallization roller cooling system;
Adopt cold air power spraying and coating; To drive metallic particles with high-speed impact crystallization roller roller core outer surface greater than the 1.0MPa pressed gas; Enough distortion take place and are bonded on crystallization roller roller core surface and the cooling circuit outer surface in metallic particles, filling pore, and then form enough coating layer thicknesses cooling circuit is buried fully; And the crystallization roll sleeve of formation adequate thickness, accomplish the manufacturing of crystallization roller.
Further, metal tube is installed as multilayer or solid space structure on the roller core outer surface of crystallization roller.
Described metal tube curves arbitrary shape and length.
Arbitrary cooling circuit can be controlled separately, also can a plurality of circuit controls.
Described metal tube is the arbitrary section shape, the arbitrary section size.
Described metal tube cross-sectional sizes is a variable-diameter structure.
Described metallic particles is copper and copper alloy, Ni, Cr, ferroalloy and titanium alloy etc.
The diameter range of described metallic particles is 0.5 μ m to 100 μ m; Driving gas is nitrogen, air, helium or its mist; Gas pressure is 1.0MPa to 5.0Mpa, and the metal powder granulates stroke speed is a supersonic speed, or greater than 500m/s; Gas flow 15～30g/s; Particulate quickens to reach more than the sufficiently high speed through nozzle, and bump produces enough distortion and forms bonding.Cold spraying is at the temperature deposit roller shell well below melting point metal, and internally roller and cooling water pipe do not have heat affecting.
Characteristics of the present invention are:
1, the cooling system loop is provided with in advance.The cooling system of crystallization roller is to adopt metal tube to be directly installed on the roller core outer surface of crystallization roller among the present invention.Not on the roller core of crystallization roller or roller shell, to process, neither utilize hole between roller core and the roller shell to form.Manufacturing approach is easy to be reliable, can make complicated cooling system.And cooling circuit self is independent, and can eliminate thermal expansion in use influences it.
1. the Design of Cooling System of crystallization roller does not receive the restriction of machining.The arbitrary loop of the cooling system of crystallization roller can be the arbitrary section shape, arbitrary section size, cross-sectional sizes can be identical also can be reducing; Cooling section can be random length on the roller in the crystallization roller; Crooked arbitrarily, and can be any number of plies, also can be spatial arrangement.Duct portion only need just can be installed on interior roller in perforate, simple and convenient, and the position is unrestricted.Import and outlet are in the roller core cavity.
2. the entering of arbitrary cooling circuit cooling fluid and discharge are selected as required.Arbitrary cooling circuit that the present invention designed can be through independently getting into and discharge control; Also can a plurality of cooling circuits shared one gets into or outlet, so the entering of the cooling water in the crystallization roller and discharge can require adjust arbitrarily according to reality.
3. the working control mode of cooling system, cooling capacity can be regulated as required.Each loop of cooling water system of the crystallization roller of manufacturing of the present invention can independently get into and discharge control; And independently carry out pressure control, parameters such as the entering through changing cooling water and the cooling water pressure in discharge mode and each loop, flow, flow velocity can realize the adjustment from small to integral body of cooling system control mode and cooling capacity.
4. cooling system buries and covers and the formation of roller shell formation employing cold air power spraying and coating plated metal.The present invention adopts cold spraying to fill the slit between the cooling circuit cooling section, and forms the roller shell of design size thickness.Roller shell closely is connected with roller core with cooling system, not limited by complicated cooling system shape and size, not limited by machining.
5. can adopt the metal of identical or different kind when manufacturing technology spraying of the present invention is filled, also can form the filling of gradient.The material that is suitable for comprises steel, copper and copper alloy, titanium alloy, nickel, chromium etc.Satisfy the requirement that different structure crystallization roller is made fully.Guarantee the heat conductivility of crystallization roller.Can form the roller shell of even composition, also can form the roller shell of heterogeneity gradient.
6. the present invention adopts cold spraying to fill and forms roller shell, can not cause oxidation and fire damage to roller core and cooling water system.
7. the present invention is filling the space and is forming roller shell well below the temperature deposit of melting point metal; Adopt reducing metal or alloy to be deposited on matrix surface effectively; Can eliminate the adsorb oxygen layer of matrix surface, improve the adhesion between plated metal and interior roller and the cooling circuit.Interface between the roller shell organization internal even compact, roller shell and roller core, between each cooling circuit combines firmly.
Description of drawings
Fig. 1 is a manufacturing process sketch map of the present invention;
Fig. 2 is a crystallization roller roller core sketch map of the present invention;
Fig. 3 is a crystallization roller core surface cool of the present invention loop sketch map;
Fig. 4 is spray metal, a crystallization roller core of the present invention surface particle sketch map;
The crystallization roller cross-sectional schematic that Fig. 5 makes for the present invention.
The specific embodiment
Referring to Fig. 1～Fig. 5; Method for producing continuous casting crystalli-zing roll of the present invention; At first the roller core 10 upper edge roller cores 10 at crystallization roller 1 axially drive water hole 101, apopore 102 into, on roller core 10 walls, have water-guiding hole 103,104, are communicated with inlet opening 101, apopore 102 and roller core 10 outer surfaces 100 respectively; Metal tube 2 is installed on roller core 10 outer surfaces 100 of crystallization roller 1, is communicated with a plurality of cooling circuits of formation with inlet opening 101, apopore 102 through the water-guiding hole 103,104 on the roller core wall respectively, form crystallization roller cooling system; Adopt cold air power spraying and coating; To drive minute metallic particle 3 greater than 1.0MPa pressure high pressure compressed gas to spray through nozzle 4 at a high speed; The outer surface of high speed metallic particles 3 bump crystallization roller roller core 10 outer surfaces 100 and cooling circuit; Enough plastic deformations take place and are bonded on crystallization roller 1 roller core 10 outer surfaces 100 and the cooling circuit outer surface in metallic particles 3, fill the hole between the cooling circuit, and then form enough coating layer thicknesses cooling circuit is buried fully; And the crystallization roll sleeve 5 of formation adequate thickness, accomplish the manufacturing of crystallization roller.
Referring to Fig. 2, Fig. 3, it is a crystallization roller roller core sketch map of the present invention; According to the crystallization roller designing requirement, can on roller core 10, open hole arbitrarily, the position of perforate, quantity and pore size or shape require to be confirmed by cooling system.For example, circular port, slotted eye, square opening; The internal structure in hole, each Kong Doucong crystallization roller roller core 10 outer surface 100 directly communicates with cavity inlet opening 101, the apopore 102 of roller core; Cooling circuit is metal tube 2 loops; Pass the water-guiding hole 103,104 on the roller core wall, and on the surface 100 of roller core 10 around, around length, route and the number of plies all according to the crystallization roller designing requirement carry out; Be parallel to axial cooling section shown in the figure; Cooling section perpendicular to axial direction, the cooling section of arbitrary shape, cooling circuit is at the lip-deep profile of roller core.Cooling circuit passes behind the roller core wall structure in the chamber within it, and arbitrary loop can intake separately and draining in inner chamber, also can shared water inlet of several cooling circuits or drainpipe, and all shared water inlet of cooling circuit that also can be all or draining water pipe.
Referring to Fig. 4, it is spray metal, crystallization roller core surface particle sketch map; Adopt cold air power spraying and coating; Drive minute metallic particle 3 to spray through nozzle 4 at a high speed with 2.0MPa pressure high pressure compressed gas; The outer surface of high speed metallic particles 3 bump crystallization roller roller core 10 outer surfaces 100 and cooling circuit; Enough plastic deformations take place and are bonded on crystallization roller 1 roller core, 10 outer surfaces 100 and the cooling circuit outer surface in metallic particles 3; Fill the hole between the cooling circuit, and then form enough coating layer thicknesses cooling circuit is buried fully, and form the crystallization roll sleeve 5 of adequate thickness; Wherein, described metallic particles is copper and copper alloy, Ni, Cr, ferroalloy and titanium alloy etc.; The metallic particles diameter is 0.5 μ m to 100 μ m; Driving gas is nitrogen, air, helium or its mist; The metallic particles stroke speed is a supersonic speed; Gas flow 15～30g/s.
Referring to Fig. 5, it makes the crystallization roller sketch map of completion for the present invention; Metal tube 2 is communicated with inlet opening 101, apopore 102 with water-guiding hole 103,104 on the roller core wall and constitutes a plurality of cooling circuits on crystallization roller 1 roller core 10 outer surfaces 100, forms crystallization roller cooling system; Cold spraying plated metal on crystallization roller 1 roller core, 10 outer surfaces 100 and cooling circuit outer surface forms enough coating layer thicknesses cooling circuit is buried fully, and forms the crystallization roll sleeve 5 of adequate thickness, accomplishes the manufacturing of crystallization roller 1.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410084782 CN1781623B (en) | 2004-11-30 | 2004-11-30 | Method for producing continuous casting crystallizing roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410084782 CN1781623B (en) | 2004-11-30 | 2004-11-30 | Method for producing continuous casting crystallizing roll |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1781623A CN1781623A (en) | 2006-06-07 |
| CN1781623B true CN1781623B (en) | 2012-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410084782 Expired - Lifetime CN1781623B (en) | 2004-11-30 | 2004-11-30 | Method for producing continuous casting crystallizing roll |
Country Status (1)
| Country | Link |
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| CN (1) | CN1781623B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2493642B1 (en) * | 2009-10-30 | 2020-08-26 | Nucor Corporation | Method and apparatus for controlling variable shell thickness in cast strip |
| CN104313567A (en) * | 2014-09-12 | 2015-01-28 | 湖州鑫隆镀膜科技有限公司 | Metal chromium production technology for replacing electroplating technology |
| JP6584417B2 (en) | 2014-09-19 | 2019-10-02 | ヤマウチ株式会社 | Paper-making roll, fiber calender roll, and production method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2850776A (en) * | 1956-12-03 | 1958-09-09 | Hunter Eng Co | Roll constructions for continuous casting machines |
| US4631792A (en) * | 1982-08-20 | 1986-12-30 | Mannesmann Aktiengesselschaft | Composite body |
| EP0490800B1 (en) * | 1990-12-07 | 1995-10-04 | Usinor Sacilor | Cylinder for single-roll or twin-roll continuous casting. |
| US6527042B1 (en) * | 1999-10-06 | 2003-03-04 | Pechiney Rhenalu | Roll for the continuous casting of metal strips comprising a cooling circuit |
-
2004
- 2004-11-30 CN CN 200410084782 patent/CN1781623B/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2850776A (en) * | 1956-12-03 | 1958-09-09 | Hunter Eng Co | Roll constructions for continuous casting machines |
| US4631792A (en) * | 1982-08-20 | 1986-12-30 | Mannesmann Aktiengesselschaft | Composite body |
| EP0490800B1 (en) * | 1990-12-07 | 1995-10-04 | Usinor Sacilor | Cylinder for single-roll or twin-roll continuous casting. |
| US6527042B1 (en) * | 1999-10-06 | 2003-03-04 | Pechiney Rhenalu | Roll for the continuous casting of metal strips comprising a cooling circuit |
Non-Patent Citations (1)
| Title |
|---|
| 李长久 等.冷喷涂技术的研究现状.第二届中国北方焊接学术会议论文集.2001,20-25. * |
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| Publication number | Publication date |
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| CN1781623A (en) | 2006-06-07 |
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