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Double metal material cold covering manufacturing method of thickness more than 2.5mm

A production method and bi-metal technology, applied in the direction of metal rolling, metal rolling, metal processing equipment, etc., can solve the problem of incapable of cold production, and achieve the improvement of product quality, good operability, easy production and quality. control effect

Active Publication Date: 2008-06-25
宝武特种冶金有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to provide a method for cold reprocessing of bimetallic products with a thickness ≥ 2.5mm, to solve the technical problem that thicker bimetallic products (thickness above 2.5mm) cannot be cold reproduced, and to improve product quality, yield and production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] For bimetal products with a thickness of 2.5mm or more (including 2.5mm),

[0037] 1. The preparation method of the component layer material used in the cold rolling composite method:

[0038] Steel ingot → forging and peeling (thickness 35~40×width L 1 × length L 2 mm)→hot rolling (thickness 6.0~8.0×width L 1 × length L 2 mm)→cold rolling (thickness 4.8~6.0×width L 1 × length L 2 mm) → heat treatment (bright continuous heat treatment furnace, heat treatment process: temperature 1050-1150 ° C, tape speed ≤ 0.3 m / min);

[0039] 2. The rolling method is a solid-phase cold-rolling composite method: after overlapping the original single component layer material, it is rolled into a bimetal at room temperature one by one. The size of the component layer materials before composite rolling is: thickness 9.6-12.0×width L1×length L2mm; after composite rolling, the size of the bimetal is: thickness 3.2-4.0×width L1×length L2mm. Rolling speed V≤1.5M / min; chlorinated paraffi...

Embodiment 2

[0043] Thickness 2.5mm bimetal product,

[0044] 1. The preparation method of the component layer material used in the cold rolling composite method:

[0045] Steel ingot→forging and peeling (thickness 38×width 210×length Lmm)→hot rolling (thickness 6.5×width 215×length Lmm)→cold rolling (thickness 4.9×width 200×length Lmm)→heat treatment (bright continuous heat treatment furnace, heat treatment Process: temperature 1090°C, tape speed 0.3 m / min);

[0046] 2. The rolling method is a solid-phase cold-rolling composite method: after overlapping two single component layer materials, they are rolled into a bimetal at room temperature one pass at a time. The size of the component layer materials before clad rolling is: thickness 9.8×width 200×length Lmm; after clad rolling, the size of the bimetal is: thickness 3.2×width 200×length Lmm. The rolling speed is 1.2M / min; the lubrication condition is chlorinated paraffin; the rolling deformation rate is 67.3%;

[0047] 3. Sintering: h...

Embodiment 3

[0050] Thickness 3.0mm bimetal product,

[0051] 1. The preparation method of the component layer material used in the cold rolling composite method:

[0052] Steel ingot→forging and peeling (thickness 40×width 210×length Lmm)→hot rolling (thickness 8.0×width 215×length Lmm)→cold rolling (thickness 6.0×width 200×length Lmm)→heat treatment (bright continuous heat treatment furnace, heat treatment Process: temperature 1100°C, tape speed 0.3 m / min);

[0053] 2. The rolling method is a solid-phase cold-rolling composite method: after overlapping two single component layer materials, they are rolled into a bimetal at room temperature one pass at a time. The size of the component layer materials before clad rolling is: thickness 12×width 200×length Lmm; after clad rolling, the size of the bimetal is: thickness 3.8×width 200×length Lmm. The rolling speed is 0.8M / min; the lubrication condition is chlorinated paraffin; the rolling deformation rate is 68.3%;

[0054] 3. Sintering (di...

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PUM

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Abstract

The invention discloses a cold compositing production method of a double-metal product with the thickness being more than or equal to 2.5mm. The method comprises the following steps: 1) preparation of component layer material used for solid phase cold rolling composite: 1.1. steel ingot, forging and skinning: the thickness of the material is 35-40mm; 1.2. hot rolling: the thickness of the material after being rolled is 6.0-8.0mm; 1.3. cold rolling: the material thickness after the cold rolling is 4.8-6.0mm; 1.4. heat treating: the treatment temperature is 1050-1150 DEG C, and the tape speed is less than or equal to 0.3 meter per minute; 2) cold rolling composition: the original single component material is overlapped, and then one-time rolling is carried out, so as to ensure that the double metals under room temperature; the rolling speed is less than or equal to 1.5 meter per minute, and the deforming rate of the rolling is 67-71 percent; 3) sinter: heating treatment temperature is 1050-1150 DEG C, and tape speed is less than or equal to 0.5 meter per minute; 4) final product cold rolling. The invention solves the technique problem of thick double-metal product (with thickness more than 2.5mm) being unable to cold compositing production, improves product quality, output rate and production efficiency.

Description

technical field [0001] The invention relates to a bimetallic production process, in particular to a cold recovery production method for a bimetallic product with a thickness ≥ 2.5 mm. Background technique [0002] Bimetals are generally composed of two or more single metal materials or alloys with large differences in expansion coefficients (single metal materials are also component layer materials; two component layer materials are called high expansion layers or active layers, respectively. Low expansion layer or passive layer) is a heat-sensitive functional material compounded. Because of its simple structure and reliable use, it is widely used in industries such as color TVs, home appliances, automobiles, and electromechanical industries, as displacement compensation, temperature indication, and temperature control. The production process of bimetal usually includes hot rolling cladding method and solid phase cold rolling cladding method, etc.; the essence of which is t...

Claims

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Application Information

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IPC IPC(8): B23P23/04B21B37/00B21B37/56B21B37/16C21D9/56C21D11/00B21J1/04C10M107/38
Inventor 黄庆华郭南翔
Owner 宝武特种冶金有限公司