A method for surface hardening of high-strength titanium alloy pipe

A technology for titanium alloys and pipes, applied in the field of material processing, can solve the problems of no processing technology and no titanium alloys found.

Active Publication Date: 2017-06-16
GRIMAT ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patents CN101503755, CN101502881, etc. only provide ultrasonic metal surface processing devices, and do not give specific processing techniques
[0013] Up to now, there is no relevant processing technology report on the use of ultrasonic impact processing to improve the surface hardness of titanium alloys

Method used

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Embodiment Construction

[0029] The invention provides a method for surface hardening of high-strength titanium alloy pipes. Specifically, a lathe, an ultrasonic generator with a frequency of 30KHz, an ultrasonic surface processing device and a special tool for ultrasonic processing are used to harden the surface of high-strength titanium alloy pipes by ultrasonic impact processing. Taking TC10 titanium alloy pipe as an example, the surface ultrasonic impact processing technology is as follows:

[0030] (1) The equipment used in the ultrasonic impact processing technology includes a lathe, an ultrasonic generator with an output frequency of 30KHz, an ultrasonic surface processing device and a special tool for ultrasonic processing;

[0031] (2) Install the special tool for ultrasonic processing on the tool holder of the lathe;

[0032] (3) Connect the cables connecting the ultrasonic generator, the ultrasonic surface processing device and the special tool for ultrasonic processing;

[0033] (4) Clamp...

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Abstract

The invention discloses an outer surface hardening method for a high-strength titanium alloy tube, and belongs to the technical field of material processing. The surface hardening method specifically comprises the following steps: mounting a special tool for ultrasonic processing to a tool rest of a lathe; using an ultrasonic generator with frequency of 30KHz to carry out ultrasonic-impact hardening processing on the outer surface of the titanium alloy tube; regulating the rotation speed of the lathe, controlling linear speed of the rotation of the outer surface of the titanium alloy tube to be 10-20m / min, and controlling longitudinal feeding speed of the ultrasonic special tool to be 0.15-0.3mm; and after completing processing, regulating a current value of ultrasonic equipment to be lower than 0.5A, and switching off the ultrasonic equipment. According to the outer surface hardening method provided by the invention, process parameters for carrying out surface hardening and processing on the high-strength titanium alloy tube are controlled by adopting an ultrasonic processing mode on the lathe, and operation is carried out according to the process, so that the outer surface of the high-strength titanium alloy tube obtains optimal ultrasonic hardening effect. The process can effectively improve the hardness and the wear resistance of the outer surface of the titanium alloy tube, so that the surface roughness is reduced.

Description

technical field [0001] The invention belongs to the technical field of material processing, in particular to a method for hardening the outer surface of a high-strength titanium alloy pipe. In particular, it relates to an ultrasonic impact hardening process for the outer surface of a titanium alloy pipe, which can effectively improve the hardness and wear resistance of the outer surface of the titanium alloy pipe and reduce surface roughness. Background technique [0002] High-strength titanium alloy pipes have the characteristics of high strength, low density, good corrosion resistance and heat resistance, and are ideal materials for key parts in the fields of aviation, aerospace, petroleum, chemical industry, and ships. However, due to the low hardness, high friction coefficient and poor wear resistance of titanium alloy, its service life and application range are affected to a certain extent. Using appropriate surface hardening technology to improve the surface hardness ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/18
CPCC22F1/183
Inventor 闫晓东
Owner GRIMAT ENG INST CO LTD
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