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A deformation heat treatment method for improving the strength of α+β-type titanium alloy

A deformation heat treatment, titanium alloy technology, applied in heat treatment equipment, quenching devices, manufacturing tools, etc., can solve problems such as high energy consumption, low efficiency, and inability to mass production, to solve low efficiency, improve strength, and achieve continuous quenching processing effect

Active Publication Date: 2017-09-26
西安赛特思迈钛业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a deformation heat treatment method for improving the strength of α+β titanium alloy, which solves the problems of low efficiency, high energy consumption and incapable of mass production in the existing α+β type titanium alloy deformation heat treatment process

Method used

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  • A deformation heat treatment method for improving the strength of α+β-type titanium alloy
  • A deformation heat treatment method for improving the strength of α+β-type titanium alloy
  • A deformation heat treatment method for improving the strength of α+β-type titanium alloy

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Effect test

Embodiment 1

[0046] Using the present invention to carry out deformation heat treatment process to TC4 two-phase titanium alloy rod, first adopt two-roll mill 1 to roll TC4 two-phase titanium alloy to obtain the rolling piece 2 that specification diameter is Φ15mm, and rolling deformation is 91.6%; After quenching, the temperature of the rolled piece 2 is 820±5°C before quenching. Before quenching, the water inlet 3 is connected to make the flowing water fill the flowing water cooling pipe 5; (TC4) the rolled piece 2 is rolled from the two-roll mill 1. The feed port at one end of the flowing water cooling pipeline 5 enters and passes through the inside of the flowing water cooling pipeline 5 filled with cooling water, and enters the cooling bed 7 for air cooling after coming out from the discharge and water outlet at the other end of the flowing water cooling pipeline 5; The (TC4) rolled piece 2 above is subjected to low temperature stress relief heat treatment, and the heat treatment tempe...

Embodiment 2

[0048]Use the present invention to carry out deformation heat treatment process to TC20 (alpha+beta) type titanium alloy rod stock, at first two-roll mill 1 carries out rolling and obtains the rolled piece 2 that specification diameter is Φ 18mm, and rolling distortion is 85%; Carry out after rolling Quenching, the temperature of the rolled piece 2 before quenching is 845±5°C, before quenching, connect the water inlet 3, so that the flowing water is filled with the flowing water cooling pipe 5; The feed port at one end of 5 enters and passes through the flowing water cooling pipeline 5 inside that is full of cooling water, enters the cooling bed 7 air cooling after coming out from the discharge and water outlet at the other end of the flowing water cooling pipeline 5; TC20) Rolled piece 2 is subjected to low-temperature stress relief heat treatment, and the heat treatment temperature is 650°C. The mechanical properties of the TC20 material after deformation heat treatment were...

Embodiment 3

[0050] Use the present invention to carry out deformation heat treatment process to TC4ELI (alpha+beta) type titanium alloy rod stock, at first two-roll mill 1 carries out rolling and obtains the rolled piece 2 that specification diameter is Φ 20mm, and rolling distortion is 95%; Carry out after rolling Quenching, the temperature of the rolled piece 2 before quenching is 805±5°C, before quenching, connect the water inlet 3 (that is, pass water from the water inlet 3 to the flowing water cooling pipe), so that the flowing water fills the flowing water cooling pipe 5; (TC4ELI) After being rolled by the two-roll mill 1, the rolled piece 2 enters from the feed inlet at one end of the flowing water cooling pipe 5 and passes through the inside of the flowing water cooling pipe 5 filled with cooling water, and enters after coming out from the discharge and water outlet at the other end of the flowing water cooling pipe 5. The cooling bed 7 is air-cooled; finally, the (TC4ELI) rolled p...

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Abstract

The invention discloses a deformation heat treatment method for improving the strength of α+β type titanium alloy. An online quenching device for deformation heat treatment of α+β type titanium alloy is adopted, which includes a two-roll rolling mill, and the exit of the last pass of the two-roll rolling mill is equipped with Flowing water cooling pipeline, the two ends of the flowing water cooling pipeline are respectively supported by bracket a and bracket b, the bracket a is set close to the two-roll rolling mill, one end port of the flowing water cooling pipeline is the feed inlet, and the pipe wall of the flowing water cooling pipeline is provided with a water inlet, The water inlet is set close to the feed inlet, and the other end port of the flowing water cooling pipe is the discharge and water outlet. There is a water receiving tank under the discharge and water outlet, and a cooling bed is provided on one side of the water receiving tank. First, the α+β type The titanium alloy is rolled according to a certain amount of rolling deformation to obtain a rolled piece, which is quenched in a flowing water cooling pipe; the quenched rolled piece is then subjected to a low-temperature stress-relief heat treatment. The problems of low efficiency and high energy consumption existing in the existing α+β type titanium alloy deformation heat treatment process are solved.

Description

technical field [0001] The invention belongs to the technical field of thermal processing and heat treatment of titanium alloy materials, and relates to a deformation heat treatment method for improving the strength of α+β type titanium alloy. Background technique [0002] α+β-type titanium alloy refers to a titanium alloy that contains both α-stable elements and β-stable elements, and contains α and β two-phase structures at room temperature. The heat resistance at high and medium temperatures is also good, the heat treatment strengthening performance and welding performance are good, and the two-phase titanium alloy has the characteristics of many grades and wide application. Two-phase titanium alloys can effectively improve and adjust the content and proportion of α-phase and β-phase during thermal processing and heat treatment to achieve the microstructure and properties required by the application. The deformation heat treatment process is a process method that combine...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/18C21D1/62
CPCC21D1/62C22F1/002C22F1/183
Inventor 王海魏芬绒崔文俊刘煦罗乾伟朱峰
Owner 西安赛特思迈钛业有限公司
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