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Preparation method of titanium-steel composite plate of high bonding strength with copper as middle layer

A combination of strength and intermediate layer technology, applied in metal rolling and other directions, can solve the problems that the quality of titanium-steel clad plate products cannot be well guaranteed, cannot prevent interdiffusion of elements, and the coating metal has no good ductility, etc. Achieve the effect of good bonding effect, good plate shape, and eliminate the influence of bonding strength

Inactive Publication Date: 2015-09-02
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can improve the bonding strength of the interface to a certain extent. However, due to the thin coating, elements such as titanium and iron can penetrate the coating under high temperature or long-term heating conditions and form brittle compounds at the interface, which cannot prevent the interdiffusion of elements. At the same time, due to the lack of good ductility of the coating metal, the problem of uneven interface state will be caused during the rolling process, resulting in the quality of the titanium-steel clad plate prepared by this method cannot be well guaranteed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] The invention provides a method for preparing a titanium-steel composite plate with copper as an intermediate layer and a high bonding strength, comprising the following steps:

[0027] a. Blank assembly: carry out symmetrical blank assembly in the order of steel plate / titanium plate / copper foil / steel plate, then weld the blanks around, and vacuumize the inside of the blank to obtain a combined blank; among them, adjacent to the steel plate and titanium plate The surface is coated with a release agent, and the thickness of the copper foil is 0.3-0.8 mm;

[0028] b. Heating: heating the combined blank at 880-950°C for 2-6 hours;

[0029] c. Rolling: The heated combined billet is rolled for at least two passes, wherein the starting rolling temperature is 920°C, the finishing rolling temperature is 600-700°C, and the cooling rate is controlled to be 3-5°C / s; Pass deformation ≥ 20%, total rolling deformation ≥ 80%, rolling speed 0.1 ~ 1m / s;

[0030] d. Finishing: air cool...

Embodiment 1

[0045] ① Prepare two steel plates with a size of 200×160×18mm, one titanium plate with a size of 160×120×20mm, one piece of copper foil with the same size as the titanium plate and a thickness of 0.5mm, and four side plates, wherein the side plates The material is the same as the steel plate; a hole is made on at least one of the four side plates, and a seamless carbon steel pipe with a wall thickness > 2mm is welded at the hole; a release agent is applied on the adjacent surface of the steel plate and the titanium plate, according to The sequence of steel plate / titanium plate / copper foil / steel plate is symmetrically assembled, the side plate is set around the titanium plate and located between two steel plates, the gap between the steel plate and the side plate and the gap between the side plate and the side plate After the welding is completed, the seamless carbon steel pipe is connected to the vacuum pump, and after vacuuming the interior of the assembly, the seamless carbon...

Embodiment 2

[0050] ① Prepare two steel plates with a size of 120×80×10mm, one titanium plate with a size of 80×60×8mm, one piece of copper foil with the same size as the titanium plate and a thickness of 0.5mm, and four side plates, wherein the side plates The material is the same as the steel plate; a hole is made on at least one of the four side plates, and a seamless carbon steel pipe with a wall thickness > 2mm is welded at the hole; a release agent is applied on the adjacent surface of the steel plate and the titanium plate, according to The sequence of steel plate / titanium plate / copper foil / steel plate is symmetrically assembled, the side plate is set around the titanium plate and located between two steel plates, the gap between the steel plate and the side plate and the gap between the side plate and the side plate After the welding is completed, the seamless carbon steel pipe is connected to the vacuum pump, and after vacuuming the interior of the assembly, the seamless carbon ste...

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Abstract

The invention belongs to the field of preparation and machining of a titanium-steel composite plate, and particularly relates to a preparation method of the titanium-steel composite plate of high bonding strength with copper as a middle layer. The method comprises the following steps: a, assembling: symmetrically assembling according to the sequence of steel plate / titanium plate / copper foil / steel plate, and welding to obtain a combined blank; b, heating: heating the combined blank at 880-950 DEG C for 2-6 hours; c, rolling: rolling the heated combined blank for at least two times, wherein the total deformation of the rolling is greater than or equal to 80 percent, and the rolling speed is 0.1-1 m / s; d, refining: separating the titanium-steel interface to obtain the titanium-steel composite plate. The process of the method is simple, the problem of interface oxidation in the preparation process of the titanium-steel composite plate can be solved, the obtained titanium-steel composite plate has a good shape, the binding effect is good, and the binding strength is greater than 240 MPa.

Description

technical field [0001] The invention belongs to the field of preparation and processing of titanium-steel composite plates, and in particular relates to a preparation method of high-bonding-strength titanium-steel composite plates with copper as an intermediate layer. Background technique [0002] Titanium has good physical, chemical and mechanical properties, but its smelting technology is complicated and the production cost is high, so the price of titanium is very expensive, which greatly limits the promotion and application of titanium. Combining titanium with other metals (such as steel, copper, aluminum, etc.) -Steel composite materials are widely used in chemical, petroleum and other industrial sectors because of their high strength, excellent corrosion resistance and significant economic benefits. [0003] At present, there are four main production methods of titanium-steel clad plates: explosive clad method, diffusion clad method, explosion-rolling and direct rolli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C37/02B21B1/38
CPCB21C37/02B21B1/38B21B2001/386
Inventor 杨柳彭琳李军栾佰峰于辉王莹林崇智
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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