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Surface roughening method based on electrical discharge machining

An electrical discharge machining and surface roughening technology, applied in metal processing equipment, manufacturing tools, arc welding equipment, etc., can solve the problems of high surface roughening cost and low surface roughening efficiency, and achieve low-cost surface roughening, energy High utilization efficiency and increased bonding area effect

Active Publication Date: 2021-03-23
SHANGHAI JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a surface roughening method based on electrical discharge machining, which has obvious advantages especially for high-hardness and high-strength materials and complex-shaped curved surfaces for non-microscale surface roughening, making up for the existing surface roughening The method has shortcomings such as small surface roughening scale, low surface roughening efficiency and high surface roughening cost.

Method used

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  • Surface roughening method based on electrical discharge machining
  • Surface roughening method based on electrical discharge machining
  • Surface roughening method based on electrical discharge machining

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Embodiment

[0046] Combined instructions image 3 Elaborate the working process of the roughening of the prototype in the completion figure of the present invention: in such as image 3 In the process of roughening the surface of the sample as shown, the corresponding roughening special electrode 1 is first processed according to the surface morphology of the sample to be roughened, and the special electrode 1 is installed on the spindle of the arc machining machine tool, and the roughening Part 4 is installed on the machine tool table, and the special electrode 1 is connected with the negative pole of the special power supply 5, and the workpiece 4 to be roughened is connected with the positive pole of the special power supply 5; Maintain an appropriate gap between the roughened surfaces 4, implement water-based working fluid flushing between the discharge gaps, and then apply voltage and current between the discharge gaps through the discharge power supply 5, so that a high temperature ...

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Abstract

The invention discloses a surface roughening method based on an electric discharge machining, which has the advantages of high energy utilization efficiency and high material removal efficiency. The electrode shape can be customized to achieve submerged processing. The surface roughening method uses arc machining to achieve high-efficiency roughening for small amount of material, wherein the surface is roughened to a fine convex or concave controllable shape, thereby achieving the surface roughening effect. Compared with the prior surface roughening method, the surface roughening method basedon electric discharge machining has the advantages of high efficiency, low cost and controllable coarsening geometric features. The surface roughening method thereof solves the problems of low coarsening efficiency, high coarsening cost and uncontrollable coarsening surface features in the existing surface roughening method.

Description

technical field [0001] The invention relates to surface roughening of materials, in particular to a surface roughening method based on electrical discharge machining. Background technique [0002] How to improve the adhesion strength and increase the reliability of bonding has been an urgent problem in the application of bonding and adhesive bonding structures. For example, the current solid rocket motor nozzle mostly adopts the structural form of composite material diffusion section and metal shell bonding. It is a common failure of solid rocket motor nozzles that the high-pressure gas causes the adhesive interface of the nozzle diffuser to fail and be blown off, which brings great potential hidden dangers to models powered by solid rocket motors. In order to improve the adhesive strength and increase the reliability of the bonding structure, scholars have found that roughening the surface can form tiny unevenness on the surface, which can greatly increase the area of ​​th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23H9/00B23K9/00B23K9/24
CPCB23H9/008B23K9/00B23K9/24
Inventor 朱颖谋顾琳何国健
Owner SHANGHAI JIAOTONG UNIV