CN2183226Y - Cold-rolling roll for solving problem of cohering of thin steel plate in heat treatment of annealing - Google Patents
Cold-rolling roll for solving problem of cohering of thin steel plate in heat treatment of annealing Download PDFInfo
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- CN2183226Y CN2183226Y CN 93221266 CN93221266U CN2183226Y CN 2183226 Y CN2183226 Y CN 2183226Y CN 93221266 CN93221266 CN 93221266 CN 93221266 U CN93221266 U CN 93221266U CN 2183226 Y CN2183226 Y CN 2183226Y
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Abstract
The utility model relates to a cold roll working roll, particularly a cold roll working roll for solving the problem of the annealing cementation of a thin steel plate in heat treatment after cold roll. The utility model has the proposal that the cold roll working roll for solving the problem of the annealing cementation of the thin steel plate in heat treatment is provided. The utility model is characterized in that the arithmetical mean (which is surface roughness Ra) of tge centerline of the figure height of the surface of a roll is in a range of 1.0 to 3.0 micrometers. A micro shape which forms the surface roughness is an elliptical sealing type micro pit. A horseshoe-shaped bulge is arranged on the circumference of the long side of the ellipse. The horseshoe-shaped bulge forms a smooth shape. The utility model is manufactured in a laser texturing method. The utility model has the advantages of converted timber ratio and increased production efficiency.
Description
The utility model relates to a kind of cold roll, in particular for solving the cold roll of the cold rolling after-baking annealing of sheet metal adhesion problem.
Existing cold roll generally adopts burnisher.Because there is strip emery wheel polishing scratch on the surface of burnisher, thereby when steel rolling, skids easily between roller and the sheet metal, the service life that had not only scratched surface of thin steel sheet, influenced plate shape but also damage roll.Bite condition was poor when burnisher was rolling, and reduction in pass is low, and noise is big.Be prone to bonding during coil of strip after heat treatment is cold rolling.During the smooth annealing coil that bonding arranged, roll banding, broken belt take place easily, cause that the production board surface quality is poor, lumber recovery is low, production efficiency is low.
The purpose of this utility model provides a kind of adhesion problem when solving the cold rolling after-baking of sheet metal annealing, improves the cold roll of lumber recovery and production efficiency.
The concrete solution of the utility model is: a kind of cold roll that is used to solve cold-reduced sheet heat-treatment of annealing adhesion problem, it is characterized in that: this roll surface profile height center line arithmetic mean of instantaneous value (that is: surface roughness Ra) is in 1.0～3.0 microns these scopes, constitute the above-mentioned shaggy micro-elliptical closed hole that declines that is shaped as, there is a horseshoe-shaped projection at periphery place in the long limit of ellipse trend, and the parameter of its cross dimensions satisfies following condition:
Little hole outer rim is respectively along the diameter of major axis and minor axis: D1, D2;
Be respectively along little hole major axis and the little hole of short-axis direction distance between centers: Sm1, Sm2;
Little hole outer rim average diameter: D=D1+D2/2,50 μ m＜D＜250 μ m;
Average distance: Sm=Sm1+Sm2/2 in the heart in little hole,
50μm＜Sm＜300μm；
Convex closure height: h≤10 μ m;
The hole degree of depth: H≤20 μ m and, 1% of H≤institute's rolled steel plate thickness;
Ellipse garden degree: 0.5≤e=a/b≤2.0.
Wherein, horseshoe-shaped projection is slick and sly shape.Described little hole and projection have a surfaces hardened layer.Its hardened layer structure comprises: surface layer ultra fine crystal grain and cryptocrystalline martensite hardened layer, and layer depth is: 10～30 μ m; The heat affected area of the second layer and the matrix of internal layer.This cold roll makes with the processing method of high energy beam current (as laser) texturing.
The utility model has effectively reduced the contact area between coil of strip internal layer and the layer owing to adopted above-mentioned roller surface pattern design, has increased lubricated area.Thereby the bonding phenomenon of coil of strip when having prevented heat treatment effectively.In addition, the utility model has improved also that cold-reduced sheet is nipped and friction condition, has improved drafts and mill speed, has improved plate shape.
The utility model adopts the laser roughening processing method, promptly presses certain distribution partial melting roll surface material with pulse laser at roller surface, uses assist gas simultaneously, fused mass is blown out the molten bath cool off the formation convex closure outside pool side edge and pond.Because heat time heating time is very brief, very big by the thermograde of roll self cooling, fused mass cools off, forms intensity and the wear-resistant ability that ultra-fine grain (average crystal grain diameter (≤1 μ m) is 1/tens of existing processing method) has increased material rapidly.Because local laser quenching, three layers of hardened layer structure have been formed in the roller surface active region: surface layer ultra fine crystal grain and cryptocrystalline martensite hardened layer, its hardness 〉=HRV900, the about 20 μ m of layer depth.The second layer is the heat affected area, and its hardness is about about HRV850, the about 20 μ m of thickness.Internal layer is original matrix, and its hardness is about: HRV800(as shown in Figure 1).Because above-mentioned processing, the pit that forms at roll surface is in the operation of rolling, can strengthen lubrication by oil storage and collect the broken particle of wearing and tearing simultaneously, the roll surface convex closure of high rigidity (HRV 〉=900) steel plate of in the operation of rolling, nipping rapidly, thereby reduce skidding in rolling, improved the surface quality and the plate shape of plate.Cold roll after laser roughening is handled, the hardness 〉=HRV900 of partial melting hardening point.Can form on the roller surface preferably in softer relatively, toughness like this and press the equally distributed hard point of certain interval, these hard points can improve the wear-resistant ability of roll greatly.Softer matrix then can play the distortion cushioning effect, helps improving the service life of roll.
Fig. 1 is the signal of the utility model YAG laser roughening little hole modification (sclerosis) situation.
Fig. 2 is the sectional drawing of the utility model surface micro-pit shape.
Fig. 3 is a shape appearance figure of the present utility model.
Fig. 4 compares in the life-span of laser roller of the present utility model and burnisher.
In Fig. 1,1 is hardened layer, and 2 is the heat affected area, and 3 is matrix.
In Fig. 4,4 is laser roughening roller life curve, and 5 is emery wheel burnisher life curve.
Below in conjunction with accompanying drawing the utility model is further described: a kind of cold roll that is used to solve sheet metal heat-treatment of annealing bonding, it is characterized in that: the center line average surface roughness Ra of this roll is in 1.0～3.0 microns these scopes, the micro-elliptical closed hole that declines that is shaped as that constitutes above-mentioned surface roughness, there is a horseshoe-shaped projection at periphery place in the long limit of ellipse trend, and the parameter of its cross dimensions satisfies following condition:
Little hole outer rim is respectively along the diameter of major axis and minor axis: D1, D2;
Be respectively along little hole major axis and the little hole of short-axis direction distance between centers:
Sm1、Sm2；
Little hole outer rim average diameter: D=D1+D2/2, D=120 μ m;
Wei Keng center average headway from: Sm=(Sm1+Sm2)/2, Sm=150 μ m;
Convex closure height: h=3 μ m;
The hole degree of depth: H=5 μ m and, 1% of H≤institute's rolled steel plate thickness;
Ellipse garden degree: e=a/b=1.2.
Wherein, horseshoe-shaped projection is the sliding shape in garden.Described little hole and projection have a surfaces hardened layer, and the hardened layer structure comprises: the thin brilliant and cryptocrystalline martensite hardened layer in top layer, and layer depth is: 20 μ m; The heat affected area of the second layer, thickness is: 20 μ m; Internal layer is original matrix.This cold roll makes (as shown in Figure 1, 2) by the processing method of laser roughening.
Claims (4)
1, a kind of cold roll that is used to solve sheet metal heat-treatment of annealing adhesion problem, it is characterized in that: this roll surface profile height center line arithmetic mean of instantaneous value (that is: surface roughness Ra) is in 1.0～3.0 microns these scopes, constitute the above-mentioned shaggy micro-elliptical closed hole that declines that is shaped as, periphery in the long limit of ellipse trend has a horseshoe-shaped projection, and the parameter of its cross dimensions satisfies following condition:
Little hole outer rim is respectively along the diameter of major axis and minor axis: D1, D2;
The little hole of long axis direction distance between centers is: Sm1;
The little hole of short-axis direction distance between centers is: Sm2;
Little hole outer rim average diameter: D=(D1+D2)/2,50 μ m＜D＜250 μ m;
Distance between little hole: Sm=(Sm1+Sm2)/2,50 μ m＜Sm＜300 μ m;
Convex closure height: h≤10 μ m;
The hole degree of depth: H≤20 μ m and, 1% of H≤institute's rolled steel plate thickness
Ovality: 0.5≤e=a: b≤2.0.
2, the cold rolling work roll that is used to solve sheet metal heat-treatment of annealing adhesion problem according to claim 1, it is characterized in that: this cold roll is made by the processing method of laser roughening; Horseshoe-shaped projection is slick and sly shape.
3, the cold roll that is used to solve sheet metal heat-treatment of annealing adhesion problem according to claim 1 and 2 is characterized in that: described little hole and projection have a surfaces hardened layer; The hardened layer structure comprises: surface layer ultra fine crystal grain and cryptocrystalline martensite hardened layer, the heat affected area of the second layer and the matrix of internal layer.
4, the cold roll that is used to solve sheet metal heat-treatment of annealing adhesion problem according to claim 3 is characterized in that: the thin brilliant and cryptocrystalline martensite hardened layer layer depth in top layer is 10～30 μ m, and internal layer is original matrix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93221266 CN2183226Y (en) | 1993-08-12 | 1993-08-12 | Cold-rolling roll for solving problem of cohering of thin steel plate in heat treatment of annealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93221266 CN2183226Y (en) | 1993-08-12 | 1993-08-12 | Cold-rolling roll for solving problem of cohering of thin steel plate in heat treatment of annealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2183226Y true CN2183226Y (en) | 1994-11-23 |
Family
ID=33800166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93221266 Expired - Fee Related CN2183226Y (en) | 1993-08-12 | 1993-08-12 | Cold-rolling roll for solving problem of cohering of thin steel plate in heat treatment of annealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2183226Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384553C (en) * | 2003-01-31 | 2008-04-30 | 住友金属工业株式会社 | Seamless steel tube for drive shaft and method for manufacturing the same |
| CN107488773A (en) * | 2017-07-17 | 2017-12-19 | 洛阳双瑞精铸钛业有限公司 | A kind of process for reducing cold rolling titanium strip coil bell-type annealing and bonding |
| CN112122383A (en) * | 2020-08-26 | 2020-12-25 | 中铝瑞闽股份有限公司 | Preparation method of aluminum alloy plate strip for anodic oxidation of roughened surface |
| CN115302763A (en) * | 2022-02-15 | 2022-11-08 | 西京学院 | FDM type 3D printing system and method based on laser texturing technology |
-
1993
- 1993-08-12 CN CN 93221266 patent/CN2183226Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384553C (en) * | 2003-01-31 | 2008-04-30 | 住友金属工业株式会社 | Seamless steel tube for drive shaft and method for manufacturing the same |
| CN107488773A (en) * | 2017-07-17 | 2017-12-19 | 洛阳双瑞精铸钛业有限公司 | A kind of process for reducing cold rolling titanium strip coil bell-type annealing and bonding |
| CN107488773B (en) * | 2017-07-17 | 2019-03-12 | 洛阳双瑞精铸钛业有限公司 | A kind of process reducing cold rolling titanium strip coil bell-type annealing bonding |
| CN112122383A (en) * | 2020-08-26 | 2020-12-25 | 中铝瑞闽股份有限公司 | Preparation method of aluminum alloy plate strip for anodic oxidation of roughened surface |
| CN115302763A (en) * | 2022-02-15 | 2022-11-08 | 西京学院 | FDM type 3D printing system and method based on laser texturing technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |