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Laser strengthening and toughening method for interface between ground-mass and coating

A metal matrix, laser strengthening technology, used in metal material coating process, coating, sputtering and other directions

Inactive Publication Date: 2004-06-16
INST OF MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, laser quenching has been widely used in engineering, such as the hardening treatment of the inner surface of the cylinder block and cylinder liner of the automobile engine; the laser texturing technology of the roll (a kind of laser melting processing method) is also The industrial production of thin steel plates / strips has been applied on a large scale; recently, the cam peach tip laser cladding technology has also made progress in industrial applications; however, due to the local characteristics of laser processing, large-area laser melting processing includes laser alloy The industrial application of chemical and laser cladding is still being explored

Method used

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  • Laser strengthening and toughening method for interface between ground-mass and coating
  • Laser strengthening and toughening method for interface between ground-mass and coating

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Embodiment Construction

[0027] Specific implementation

[0028] The present invention will further detail the embodiments:

[0029] Reference figure 1 , Is a structural schematic diagram of a tubular workpiece processed by the method of the present invention; the tubular workpiece can be the barrel of an anti-aircraft machine gun, including a barrel base 1, and the interface 2 between the barrel base 1 and the metal coating is laser discrete strengthening The laser discrete strengthening layer includes a fused layer, a phase change hardened layer, and a heat-affected layer; the fused layer, phase change hardened layer, and heat-affected layer are distributed continuously or discontinuously in the interface; With chrome plating 3.

[0030] The laser strengthening process of the barrel includes the following steps:

[0031] 1. Routine degreasing and cleaning of anti-aircraft machine gun barrels;

[0032] 2. The surface of the barrel is coated with a light-absorbing coating, wherein the light-absorbing coat...

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Abstract

The invention relates to a process for laser annealing of interface between a metal ground-mass and a coating layer, the coating is a metal or ceramic coating, and the process comprises proceeding micro-fusion discretization fabrication to the interface between the metal ground-mass and coating through laser rays, forming a discretization reinforcement layer on the interface, thus improving the material list tissue hardness, frictional wear performance, ablation property, fatigue performance and corrosion resistance under ambient temperature and hot environment.

Description

Technical field [0001] The invention relates to an interface processing technology, in particular to a laser strengthening and toughening method for the interface between a metal substrate and a coating layer. Background technique [0002] Coating a metal or ceramic protective layer on the surface of a metal workpiece is an effective measure to improve the service life of the workpiece under strong loads such as high temperature, high pressure, strong ablation, and strong wear. Due to the obvious differences in physical properties between coating materials and metal matrix materials, the bonding strength of the interface is often the key to whether coating materials can effectively function. The conventional interface treatment measures before the workpiece coating are shot peening, grinding wheel grinding, pickling, vacuum treatment, electrolytic polishing and other methods. The main function of pickling, vacuum treatment, electrolytic polishing and other methods is to clean the...

Claims

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Application Information

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IPC IPC(8): C21D1/09C23C2/02C23C14/02C23C16/02C25D5/34
Inventor 陈光南罗耕星张坤武晓雷肖京华
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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