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Efficient and precise machining method for composite material

A composite material and precision machining technology, applied in the field of weaponry and aerospace, can solve the problems of limited space for hardness improvement, low processing efficiency, poor processing quality, etc. Sexual Threshold Accurate Effects

Active Publication Date: 2020-04-21
BEIJING SATELLITE MFG FACTORY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem solved by the present invention is: in the current prior art, the presence of hard, brittle and wear-resistant reinforcing particles or reinforcing whiskers in metal matrix composites, or the existence of hard and brittle matrix in ceramic matrix composites, leads to severe tool wear , low processing efficiency, poor processing quality and other outstanding problems, as well as the limitation of the limited space for improving the hardness of the processing tool relative to the hardness of the processed composite material, a processing method using time-domain shaping ultrafast laser composite machining is provided.

Method used

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  • Efficient and precise machining method for composite material
  • Efficient and precise machining method for composite material

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Embodiment Construction

[0025] use as figure 2 The processing device shown specifically includes: an ultrafast laser source 1 , a double pulse optical path 2 , a scanning galvanometer 3 , a compressed air source 4 , a sample to be processed 5 , a milling cutter 6 , and a carrying and moving system 7 . After the single pulse sequence emitted by the ultrafast laser source 1 passes through the double-pulse optical path 2, it is shaped into a double-pulse sequence in the time domain (the delay between the two sub-pulses in the double-pulse is τ), and the double-pulse sequence passes through the scanning galvanometer 3 and the carrying and moving system 7. Realize the relative movement between the laser pulse and the sample 5 to be processed. With the assistance of the compressed air source 4, the sample 5 to be processed will be heated after absorbing the double-pulse laser energy, thereby inducing an oxidation reaction in the heated area of ​​the composite material to generate easy-to-process loose oxi...

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Abstract

The invention discloses an efficient and precise machining method for a composite material. The thickness and the heated degree of a heated area of the composite material are regulated accurately through time domain shaping ultrafast lasers; the thickness of easily-machined loose oxide generated in the manner that a matrix phase and a reinforced phase of the material are subjected to a chemical reaction through gas assisting under the heat effect is controlled; conditions are created for achieving precise machining by directly removing a loose oxide layer subsequently through cutting / grindingmachining; and machinability of the material is greatly improved.

Description

technical field [0001] The invention relates to the fields of aerospace and weapon equipment, and performs composite processing on high volume fraction metal-based composite materials or ceramic-based composite materials, and in particular relates to a high-efficiency and precise processing method using ultrafast laser composite machining. Background technique [0002] With the rapid development of modern science and technology, the requirements for material properties are increasing day by day. In addition to excellent mechanical properties, materials are also expected to have some special properties and good comprehensive properties. Composite materials represented by metal matrix composites and ceramic matrix composites are currently one of the most advanced and competitive representative types of composite materials. With broad application prospects, it has been widely used in the development of key components in military industries such as aviation, aerospace, weapons, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/36B23P23/04
CPCB23K26/36B23P23/04
Inventor 赵长喜张加波郑立彦王磊张开虎张夏明张孝辉高泽
Owner BEIJING SATELLITE MFG FACTORY
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