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Preparation method of titanium steel composite plate

A composite plate and titanium steel technology, applied in the direction of metal rolling, etc., can solve the problems of easy fracture, unstable bonding strength, and high cost

Active Publication Date: 2018-04-10
CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small solid solubility of titanium and iron, direct contact with steel will form a brittle phase on the interface, and the strength of titanium and steel is very different, so it is difficult to combine the two. In order to achieve high composite strength, a method It is to add a transition layer between the titanium plate and the steel plate. Commonly used intermediate layers are nickel, copper, etc. First, these transition layers are very expensive and not advisable. When it is large, due to the different deformation resistance of each layer, it is easy to break, resulting in unstable bonding strength.
Another method is to forge the steel plate to increase its strength before compounding, but this process is not adopted in the current production process of titanium steel clad plate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0020] The invention provides a method for preparing a titanium-steel composite plate, the method comprising the following steps:

[0021] a. Treat the surface of the steel plate or billet and the surface of the titanium plate to remove surface dirt and oxide layer;

[0022] b. The steel plate or steel billet and the titanium plate are carried out symmetrically in the order of steel plate or steel billet-titanium plate-steel plate or steel billet to form a combined billet by using the symmetrical billet method;

[0023] c. The combined blank is welded around the blank by welding in a vacuum environment;

[0024] d. Heat the combined blank to 850-900°C for 120-360 minutes;

[0025] e. The heated billet is hot-rolled, the starting rolling temperature is controlled above 800°C, the finishing rolling temperature is below 700°C, and the single-pass deformation is controlled at 20% to 30%, and the total rolling deformation is ≥90%.

[0026] Further, the carbon content of the steel...

Embodiment 1

[0043] ①Process two steel plates with dimensions of 200×160×18mm and one titanium plate with dimensions of 160×120×20mm. Grind and polish the surface to remove surface dirt and oxide layer, and then process according to steel plate / titanium plate / steel plate The sequence of symmetrical billets is assembled, and the surroundings of the billets are welded together in the vacuum chamber, and the vacuum degree is -2 Pa;

[0044] ②Put the prepared billet into the heating furnace and heat it to 900°C and keep it warm for 360min;

[0045] ③ Take out the billet after heating and roll it. The deformation in a single pass is 25%. After 9 passes of rolling (the deformation in each pass must be controlled at 25%), the cumulative deformation is about 92%, and the rolling is started. The temperature is 880°C, and the final rolling temperature is 670°C;

[0046] ④ Air-cool to room temperature, take samples for bonding strength test according to GB / T 6396-2008, the interface bonding strength...

Embodiment 2

[0048] ① Process two steel plates with a size of 200×160×18mm, carbon content of 0.05%, and a titanium plate with a size of 160×120×20mm. Grind and polish the surface to remove surface dirt and oxide layer, and then follow the The sequence of steel plate / titanium plate / steel plate is symmetrically assembled, and the surrounding of the blank is welded in the vacuum chamber, and the vacuum degree is -2 Pa;

[0049] ②Put the prepared billet into the heating furnace and heat it to 870°C and keep it warm for 240min;

[0050] ③ Take out the billet after heating and roll it. The deformation in a single pass is 20%. After 11 passes of rolling (the deformation in each pass must be controlled at 20%), the cumulative deformation is about 91%, and the rolling is started. The temperature is 850°C, and the final rolling temperature is 655°C;

[0051] ④ Air-cool to room temperature, take samples for bonding strength test according to GB / T 6396-2008, the interface bonding strength is 250MPa....

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PUM

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Abstract

The invention belongs to the field of preparation and processing of titanium-steel composite plates, and relates to a preparation method of titanium-steel composite plates. The invention provides a method for preparing a titanium-steel composite plate. The method comprises the following steps: a. treating the surface of the steel plate or billet and the surface of the titanium plate to remove surface dirt and oxide layer; b. adopting symmetrical billet assembly The steel plate or billet and the titanium plate are carried out symmetrically according to the order of steel plate or steel billet-titanium plate-steel plate or steel billet to form a combined blank; c, the combined blank is welded around the blank by welding in a vacuum environment; d, the The combined billet is heated to 850-900°C for 120-360 minutes; e, the heated billet is hot-rolled, the starting rolling temperature is controlled above 800°C, the final rolling temperature is below 700°C, and the single-pass deformation is controlled at 20%- 30%, the total rolling deformation ≥ 90%. The titanium-steel composite plate obtained by the method has high bonding strength.

Description

technical field [0001] The invention belongs to the field of preparation and processing of titanium-steel composite plates, and relates to a preparation method of titanium-steel composite plates. 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] The production of titanium-steel clad plates by direct rolling is the current development trend. Compared with the traditional explosive cladding and explosive-rolling methods, it has the advantages of flexible product size and specifi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/38
Inventor 彭琳李军杨柳栾佰峰于辉林崇智王莹
Owner CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD