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Pulse laser irradiation treatment method for healing fatigue damage of copper thin film part

A technology of fatigue damage and pulsed laser, which is applied in the field of mechanical manufacturing and laser processing, can solve the problems of fatigue damage healing of copper thin film materials, achieve the effect of improving surface quality, enhancing reliability and safety, and achieving remarkable results

Inactive Publication Date: 2013-09-04
BEIJING UNIV OF TECH
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Problems solved by technology

[0004] The purpose of the invention is to solve the problem of copper film material fatigue damage healing

Method used

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  • Pulse laser irradiation treatment method for healing fatigue damage of copper thin film part
  • Pulse laser irradiation treatment method for healing fatigue damage of copper thin film part
  • Pulse laser irradiation treatment method for healing fatigue damage of copper thin film part

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Embodiment Construction

[0026] Below in conjunction with accompanying drawing, the method of the present invention is further elaborated, please refer to Figure 1 to Figure 5 , a pulse laser irradiation treatment method for healing copper film fatigue damage, the steps are:

[0027] A) laser radiation healing device is provided, and described laser radiation healing device comprises pulsed laser 1, optical path device 2, guide rail 3 and specimen fixing device 4; Because copper thin film specimen 5 has higher absorption rate to short-wavelength laser, so Described laser selects ultraviolet excimer pulse laser for use; Described optical path device 2 comprises convex lens 21, convex lens support 22, convex lens support 23; Described specimen fixture 4 comprises metal plate 41, magnet 42, metal plate support 43, metal plate support Seat 44 and bolt 45;

[0028] B) Place the copper film test piece 5 with fatigue damage at the center of the metal plate 41, place a magnet 42 at both ends of the test pie...

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Abstract

The invention relates to a pulse laser irradiation treatment method for healing fatigue damage of a copper thin film part. The pulse laser irradiation treatment method comprises the following steps of: A) providing a laser irradiation healing device, wherein the laser irradiation healing device comprises a pulse laser, a light path device, a guide rail and a test piece fixing device; B) fixing a copper thin film test piece at the center of a metal flat plate; C) causing a laser emitting hole, the light path device and the test piece fixing device to be on the same line by virtue of the guide rail; D) controlling size of a laser spot; E) causing the laser spot to accurately irradiate a gap of a test piece; F) adjusting single pulse energy by virtue of a laser control system, so as to change energy density of lasers, wherein the lasers emitted by the pulse laser are irradiated onto the surface of the copper thin film test piece by virtue of a convex lens in the light path device; and G) taking down the copper thin film test piece from the test piece fixing device. By adopting the pulse laser irradiation treatment method, a heat-affected zone is formed on the surface of a material, so that fatigue damage of the copper thin film test piece can be effectively healed, and fatigue life of the copper thin film test piece can be also greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of mechanical manufacturing and laser processing application, in particular to a pulse laser irradiation treatment method for healing fatigue damage of copper film parts. Background technique [0002] Metal components are often served under alternating stress, fatigue damage is inevitable, once failure and fracture will cause immeasurable losses. Therefore, it will be of great engineering practical significance to take appropriate methods to repair the damaged components in service, restore their fatigue performance and prolong their life. For this reason, many workers have conducted extensive research on the repair of fatigue damage to metal materials, and obtained a series of important theoretical results. The proposed healing methods include annealing, direct current pulse, mechanical shot peening and ion nitriding, etc., which have effectively healed The fatigue damage of metal components prolongs its s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/08
Inventor 尚德广郭毓博任崇刚刘小冬王露刘凤珠能昌刚靳佳张立红
Owner BEIJING UNIV OF TECH
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