Laser heating auxiliary arc striking micro-explosion processing method and device for engineering ceramic material

Abstract

The invention relates to a laser heating auxiliary arc striking micro-explosion processing method and a laser heating auxiliary arc striking micro-explosion processing device for an engineering ceramic material, and belongs to the technical field of the processing of hard and brittle materials. The method comprises the following steps of: focusing a laser beam, and then, obliquely irradiating the laser beam on the surface of a work piece to be processed; vertically aligning a jet nozzle of an arc striking micro-explosion generator with the surface of the work piece downwards; and enabling the work piece to continuously perform a feed movement along with a working platform, carrying out laser preheating first, raising the temperature of a micro cell to the softening temperature of the ceramic material, and then, carrying out arc striking micro-explosion processing until the processing of the engineering ceramic work piece to be processed is finished. The system mainly comprises a special pulse power supply, a pulse controller, a numeric control three-dimensional working platform, a micro-explosion generator, a gas supply device, a medium-low power laser apparatus, an optical fiber and a laser head. By using the laser heating auxiliary arc striking micro-explosion processing method and the laser heating auxiliary arc striking micro-explosion processing device, the material removal efficiency of the arc striking micro-explosion processing method is improved; the processing damage is reduced; and the practical application of the arc striking micro-explosion processing method in the processing of the engineering ceramic material is further promoted.

Description

technical field [0001] The invention belongs to the technical field of processing hard and brittle materials, and in particular relates to a special processing method for engineering ceramic materials. Background technique [0002] Engineering ceramic materials are increasingly widely used in machinery, electronics, aerospace, energy, Military and other fields, but its high brittleness and high hardness have brought great difficulties to processing. [0003] At present, the main method of processing ceramics at home and abroad is grinding with diamond grinding wheels, but it can only process parts composed of simple planes or arc surfaces, and cannot process complex cavities or surfaces, thus limiting the application and application of ceramic materials. develop. In addition, since the shrinkage and deformation of ceramics after sintering are greater than 20%, the structural size is difficult to control precisely like metals, so the general machining allowance is about 50%...

AI Technical Summary

Problems solved by technology

The existing problems of laser-assisted machining of ceramics mainly include two points. One is that the control of laser beam parameters must be closely related to the properties of the workpiece material and cutting parameters; The wear is still relatively serious. Although some people have proposed to use liquid nitrogen internal circulation to reduce the temperature of the tool, the effect is not ideal

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