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Vacuum hot rolling compounding method of titanium alloy plate and stainless steel plate

A technology of stainless steel plate and titanium alloy plate, applied in metal rolling, metal rolling, metal processing equipment and other directions, can solve the problems of high welding stress of liquid metal, difficult application of explosive welding joints with volume fraction, etc., to improve the connection quality, Low cost and less diffusion effect

Inactive Publication Date: 2008-10-22
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] The purpose of the present invention is to provide a vacuum hot rolling compound method of titanium alloy plate and stainless steel plate, to solve the strong mixing of liquid metal and higher welding stress generated when titanium alloy plate and stainless steel plate are welded by fusion; The contradiction between promoting diffusion and controlling the volume fraction of intermetallic compounds at the connection interface during welding and the difficulty of using explosive welding joints in high temperature and corrosive environments

Method used

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  • Vacuum hot rolling compounding method of titanium alloy plate and stainless steel plate
  • Vacuum hot rolling compounding method of titanium alloy plate and stainless steel plate

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specific Embodiment approach 1

[0016] Specific implementation mode one: combine figure 1 with figure 2 Illustrate present embodiment, the vacuum hot-rolling compound method of present embodiment is finished like this: one, get stainless steel plate 1 and titanium alloy plate 2, also have copper foil or aluminum foil 3 to be used in addition, earlier the upper and lower surface of stainless steel plate 1 and the upper and lower surfaces of the titanium alloy plate 2 are flattened, then the stainless steel plate 1 and the titanium alloy plate 2 are stacked together, and the copper foil or aluminum foil 3 is sandwiched between the stainless steel plate 1 and the titanium alloy plate 2 to form a three-layer metal plate, The three-layer metal plate is fixed together by two rivets 4 to form a test piece; two, the above-mentioned test piece is put into the vacuum loading chamber 5, and when the vacuum degree in the vacuum heating furnace 6 reaches (1~3 )×10 -3 Heating starts at Pa, and the heating rate is 300-5...

specific Embodiment approach 2

[0020] Specific implementation mode two: combination figure 1 To describe this embodiment, the thickness of the copper foil or aluminum foil 3 used in step 1 of this embodiment is 0.1-0.5 mm. The reliability of the connection between the titanium alloy plate 2 and the stainless steel plate 1 can be guaranteed. Other vacuum hot rolling composite methods are the same as the first embodiment.

specific Embodiment approach 3

[0021] Specific implementation mode three: combination figure 1 Describe this embodiment, in this embodiment, in step 1, drill two through holes on the upper surface of the front end of the three-layer metal plate, and use a hydraulic universal testing machine to press two rivets 4 into the two through holes respectively to prevent The separation of the rolled plate during the rolling process, the two ends of the rivet 4 are flush with the upper and lower surfaces of the three-layer metal plate, and the cross-sectional area of ​​the rivet 4 expands after being compressed to fix the rolled and welded plate, avoiding the stainless steel plate 1 and the titanium alloy plate 2 Separated under the action of force during rolling. Other vacuum hot-rolling composite methods are the same as the specific embodiment one or two.

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Abstract

The invention provides a vacuum hot-rolled composite method of a titanium alloy plate and a stainless steel plate, which relates to a composite method for the titanium alloy plate and the stainless steel plate. Aiming at the problems that intense mixing of liquid metal and high welding stress are generated during the melt welding of the titanium alloy plate and the stainless steel plate, the contradiction between the diffusion and the controlling of volume fraction of compounds in connection interface metals is boosted to ensure the connection during the vacuum diffusion welding and the explosion weld joint is difficult to be applied to high-temperature and corrosive temperature, the method is characterized in that the stainless steel plate (1) and the titanium alloy plate (2) are used; furthermore, a copper foil or aluminium foil (3) is used; the surfaces of the two plates are milled flatly and the copper foil or the aluminium foil (3) is laminated and fix between the two plates, so as form a specimen; the specimen is arranged in a vacuum loading chamber (5); when the vacuum degree in a vacuum heating furnace (6) is (1-3)*10<-3> Pa and the temperature is 600-1100 DEG C, the specimen is delivered into the vacuum heating furnace for heating and heat preservation, and then welded by a roller (7) and cooled. The method of the invention has small welding stress, can control the volume fraction of compounds in the metals with high hardness and large brittleness; furthermore, the weld joint can be applied to the high-temperature and corrosive environment.

Description

technical field [0001] The invention relates to a composite method of a titanium alloy plate and a stainless steel plate. Background technique [0002] Titanium alloy has high specific strength, high temperature resistance and corrosion resistance, but its application is limited by high cost. Stainless steel has good comprehensive properties, is one of the most commonly used structural materials, and has cost advantages, but its specific strength is not high, and it does not have the special properties required by nuclear energy, chemical and other industries. The combination of titanium alloy and stainless steel can learn from each other and give full play to the excellent comprehensive performance of the two. It has broad application prospects in aerospace, nuclear energy, automobile, medical and petrochemical industries. However, both titanium alloy and stainless steel are refractory materials with melting points above 1500°C. There is a large difference in physical prop...

Claims

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Application Information

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IPC IPC(8): B21B1/38B21B37/74B21B37/46B21B45/02
Inventor 闫久春赵东升陈端良杨士勤
Owner HARBIN INST OF TECH
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