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Composite method for casting and rolling composite plate of steel, cupper, and graphite

A composite plate and graphite technology, applied in the direction of roll, metal rolling, metal rolling, etc., can solve the problems of composite forming and inability to coil, and achieve the effect of composite forming

Inactive Publication Date: 2008-10-22
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the deficiency of the existing steel-copper-graphite composite plate pressure compounding method that “cannot carry out coil compound forming” and provide a composite method and device capable of realizing steel-copper-graphite composite plate coil compound forming

Method used

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  • Composite method for casting and rolling composite plate of steel, cupper, and graphite
  • Composite method for casting and rolling composite plate of steel, cupper, and graphite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0024] Step 1, preheat the steel plate whose surface has been degreased, derusted, roughened, and dip-coated to 550°C, and the thickness of the steel plate is 1.2mm;

[0025] Step 2, connect the composite gate and the water cooling system of the rolling mill roll, the cooling rate of the cooling chamber is 400°C / min, the cooling rate of the rolling mill roll is 300°C / min, and the diameter of the rolling mill roll is 320mm;

[0026] Step 3, start the rolling mill, adjust the rolling speed to and keep it at the speed of realizing "running rolling";

[0027] Step 4, pouring titanium bronze 3.5-3.5 graphite semi-solid slurry with a solid phase rate of 40%, performing "running and rolling", the thickness b of the copper-graphite semi-solid slurry flow channel is 1.3mm;

[0028] Step 5, after "running and rolling" for 1 minute, reduce the rolling speed so that the steel plate and the titanium bronze 3.5-3.5 graphite coating can be diffused for 40 seconds, then cooled in the cooling ...

Embodiment approach 2

[0030] The difference from Embodiment 1 is: the preheating temperature of the steel plate is 600°C, the solid phase ratio of the titanium bronze 3.5-4 graphite semi-solid slurry is 45%, and the diffusion time between the steel plate and the titanium bronze 3.5-4 graphite coating is 35s , The cooling rate of the cooling chamber is 450°C / min, the cooling time is 35s, the cooling rate of the rolling mill roll is 350°C / min, the interface shear strength of the obtained steel titanium bronze 3.5-4 graphite composite plate is 128MPa.

Embodiment approach 3

[0032] The difference from Embodiment 1 is: the preheating temperature of the steel plate is 650°C, the solid phase ratio of the titanium bronze 3.5-5 graphite semi-solid slurry is 50%, and the diffusion time between the steel plate and the titanium bronze 3.5-5 graphite coating is 30s , The cooling rate of the cooling chamber is 500°C / min, the cooling time is 30s, the cooling rate of the rolling mill roll is 400°C / min, the interface shear strength of the obtained steel titanium bronze 3.5-5 graphite composite plate is 126MPa.

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Abstract

A combined casting-rolling technology for manufacturing the composite steel-copper-graphite plate includes such steps as diffusing between steel sheet and the semi-solid slurry of copper-graphite to form a composite interface, cooling, and rolling to form coiled product. Its apparatus is also disclosed.

Description

technical field [0001] The invention relates to a semi-solid casting-rolling composite method and device for a steel-copper-graphite composite plate. Background technique [0002] In the literature "Du Yunhui. Optimization of steel-semi-solid copper-graphite pressure compounding, Journal of Tsinghua University, 2005, 45(11): 1464-1467", the semi-solid pressure compounding method of steel-copper-graphite composite plate is described. The steel plate and copper-graphite semi-solid slurry are pressure-composited under the action of a press. Since the composite process of this method is carried out intermittently in the die, this method can only be used for composite forming of sheet-shaped steel-copper-graphite composite plates. , can't realize the coil composite forming of steel-copper-graphite composite plate. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the deficiency of the existing steel-copper-graphite co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/46B21B37/74B21B13/22B21B27/08B22D11/16B22D41/60
Inventor 张鹏杜云慧刘汉武姚莎莎
Owner BEIJING JIAOTONG UNIV
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