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Novel technique for producing bi-metal composite rod bar

A bimetal, new process technology, applied in the field of material processing, can solve the problems of high production cost, difficult to guarantee surface quality, complex process and so on

Active Publication Date: 2008-07-16
宝鸡特钢钛业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two methods have many disadvantages in practical application
The main problem is that the qualification rate of explosive compounding is too low, the process is complicated, the production risk is high, the safety guarantee operation is high, and the process stability is poor
Hot extrusion compounding requires a large investment, complex process, high production cost, and difficult to guarantee surface quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] This processing method is carried out according to the following flow process:

[0014] (1) Tube and rod cleaning process for cleaning the inner and outer surfaces of raw material clad metal tubes and base metal rods: through comprehensive treatment of tubes and rods (throwing brush, high-pressure cleaning, surface cleaning, drying treatment), purification of tubes and rods The surface is dust-free, scratch-free, oxidation-free, and impurity-free.

[0015] (2) Gap assembly: after the end treatment, surface treatment, joint surface coating treatment, and drying treatment, the rod is put into the tube for tube and rod assembly, and the gap between the two metals when the tube and rod are assembled Should be ≥0.10 mm.

[0016] (3) Bimetal coating: the tube is tightly coated on the surface of the bar by means of cold extrusion, shrinkage or cold drawing, and the gap between the tube and the rod is eliminated to achieve pre-lamination.

[0017] (4) Hot-rolled composite: us...

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Abstract

A new process of technology to produce a bimetal composite bar material is provided. The process of the technology is that: cleaning the inner and outer surface of the raw materials of multicoat metal tube and core metal bar-clearance matched stack-bimetal covering-hot rolling and compounding-finishing and shaping. The technology step solves the problem of batch production fundamentally as well as technical difficulty that has long bedeviled people. The input-output qualification rate is over 90 percent, anchoring strength is more than or equal to 130-250MPa and joint rate can be up to 99 percent.

Description

technical field [0001] The invention belongs to the technical field of material processing, in particular to metal physical composite technology. Background technique [0002] As we all know, most of the current composite rod production processes adopt explosive compounding and hot extrusion compounding. Explosive compounding is a method of combining two metals together by using high pressure and high temperature generated by explosive explosion. Hot extrusion compounding is a method of using a hot extrusion machine to Bimetal casting ingot results in sufficient thermal processing rate for hot extrusion molding, a method of compounding two metals together. These two methods have many disadvantages in practical application. The main problem is that the pass rate of explosive compounding is too low, the process is complicated, the production risk is high, the safety guarantee operation is high, and the process stability is poor. The investment of hot extrusion compounding is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/00B23K20/24B23K20/26B23K20/02B23K20/04
Inventor 李新中刘钢
Owner 宝鸡特钢钛业股份有限公司
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