Laser compound treatment method and device of perforated plate bushings

Abstract

A laser shock compounding method and device of perforated plate bushings are especially suitable for compound treatment of bushings of perforated parts such as granulator templates. The method includes the steps that shock waves generated on the surface of a laser radiation material shocks a compound layer material covering the surface of a perforated plate, the compound layer material generates tensile deformation and is embedded into holes of the perforated plate, and eventually the compound layer material is punched and broken to get through bushings holes through macro-energy laser pulses. The device is composed of a laser generator, transparent liquid, a blank holder, a clamp, a compound layer, the perforated plate, a working platform, a working platform control device, a computer and a laser generator control device. Through the laser shock compound treatment of the perforated plate bushings, the inner walls of all the holes and the working surface of the perforated plate are covered with the compound layer material, the whole abrasive resistance of the bushings is improved, the bushings of all the holes are connected together through the compound layer material covering the working surface of the perforated plate to form a whole, and therefore the bushings can not fall off in the working process.

Description

Technical field: [0001] The invention relates to the field of metal processing, in particular to a composite processing method and device for a porous plate bushing based on laser shock wave technology. Background technique: [0002] The granulator is widely used in the fields of industry, agriculture, forestry, and food. The granulator squeezes the material to make the material pass through the holes on the template to form granules. As the main part of the granulator, the template is easily worn by friction with the material for a long time. The template is worn to a certain extent. The template must be replaced, otherwise the quality of the pellets will drop, and the template will break, causing damage to other parts. [0003] In order to improve the service life of the pellet machine template, the existing technology often adopts the following methods for processing: [0004] 1) Use wear-resistant materials: In order to ensure that the surface of the template and the su...

AI Technical Summary

Problems solved by technology

[0007] In the prior art, wear-resistant materials are used for carburizing and quenching treatment. Due to the limited thickness of the carburized layer, the template must be replaced after the carburized layer is worn.

However, using the bushing method, the bushing is made by mechanical processing. Although the bushing can be replaced after wear, this method requires a large number of bushings, which increases the production cost of the template. In addition, in order to ensure the heat treatment of the bushing There is no deformation during post-finishing, and the wall thickness of the bushing is relatively large, which reduces the hole rate of the template, thereby reducing the production efficiency of the pellet machine

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