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Preparation method for titanium-steel composite plate with copper as middle layer

A technology of intermediate layer and clad plate, applied in the direction of metal rolling, etc., can solve the problems that the product quality of titanium steel clad plate cannot be well guaranteed, cannot prevent the mutual diffusion of elements, and the coating metal does not have good ductility, etc. Achieving the effect of good combination effect, good plate shape and improved efficiency

Inactive Publication Date: 2015-10-28
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, 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 50-500 μm;

[0028] b. Heating: heating the combined blank at 760-860°C for 2-6 hours;

[0029] c. Rolling: The heated combined billet is rolled for at least two passes, wherein the final rolling temperature is 600-700°C; the deformation in a single pass is 10%-15%, and the total deformation in rolling is ≥80 %, the rolling speed is 0.1~1m / s;

[0030] d. Finishing: air cooling to room temperature, separating the titanium-steel interface coated with the relea...

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 330 μm, and four side plates, wherein the material of the side plates Same as the steel plate; open a hole on at least one of the four side plates, and weld a seamless carbon steel pipe with a wall thickness > 2mm at the opening; apply a release agent on the adjacent surface of the steel plate and the titanium plate, and follow the steel plate The order of / titanium plate / copper foil / steel plate is symmetrically assembled, the side plate is arranged around the titanium plate, and is 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 The gap is welded to make it a combination; after the welding is completed, the seamless carbon steel pipe is connected to the vacuum pump, and after the inside of the c...

Embodiment 2

[0050] ①Prepare 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 500 μm, and four side plates, wherein the material of the side plates Same as the steel plate; open a hole on at least one of the four side plates, and weld a seamless carbon steel pipe with a wall thickness > 2mm at the opening; apply a release agent on the adjacent surface of the steel plate and the titanium plate, and follow the steel plate The order of / titanium plate / copper foil / steel plate is symmetrically assembled, the side plate is arranged around the titanium plate, and is 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 The gap is welded to make it a combination; after the welding is completed, the seamless carbon steel pipe is connected to the vacuum pump, and after the inside of the co...

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Abstract

The invention belongs to the field of titanium-steel composite plate preparing and machining, and particularly relates to a preparation method for a titanium-steel composite plate with copper as a middle layer. The preparation method includes the following steps that a, assembly is conducted, wherein symmetrical assembly is conducted according to the sequence of a steel plate, a titanium plate, copper foil and a steel plate, and the steel plate, the titanium plate, the copper foil and the steel plate are welded together to form a combined blank; b, heating is conducted, wherein the combined blank is heated for 2 hours to 6 hours at the temperature of 760 DEG C to 860 DEG C; c, rolling is conducted, wherein at least two-pass rolling is conducted on the heated combined blank, the total rolling deformation is larger than or equal to 80%, and the rolling speed ranges from 0.1 m / s to 1 m / s; and d, finishing is conducted, wherein a titanium-steel interface is separated to obtain the titanium-steel composite plate. The method is simple in process, the situation that iron is dispersed into titanium to form Ti / Fe brittle phases can be blocked, the obtained titanium-steel composite plate is good in plate shape and good in combining effect, and the combining strength is larger than 190 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 a titanium-steel composite plate 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 rolling method. The direc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/38
CPCB21C37/02
Inventor 彭琳李军杨柳栾佰峰于辉肖聪王莹王鹏
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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