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Controllable and ablated non-conductive engineering ceramic grinding method based on discharge induction

A technology for engineering ceramics and grinding processing, which is applied in the processing of non-conductive and difficult-to-machine materials, and in the field of grinding and processing of non-conductive engineering ceramics. Cutting force, the effect of improving the erosion efficiency

Inactive Publication Date: 2011-09-07
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of low processing efficiency of insulating materials at present, and to invent a processing method that rapidly softens the processed non-conductive engineering ceramic material by means of auxiliary electrode controlled ablation and then removes it by grinding

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  • Controllable and ablated non-conductive engineering ceramic grinding method based on discharge induction
  • Controllable and ablated non-conductive engineering ceramic grinding method based on discharge induction
  • Controllable and ablated non-conductive engineering ceramic grinding method based on discharge induction

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0034] Such as figure 1 , 2 shown.

[0035] A grinding method based on discharge-induced controllable ablation of non-conductive engineering ceramics, comprising the following steps:

[0036] First, use a conductive metal bonded grinding wheel as the grinding wheel, and do high-speed rotating motion, between the grinding wheel and non-conductive engineering ceramics (can be Al 2 o 3 Ceramic, ZrO 2 Ceramic, Si 3 N 4 Ceramics or SiC ceramics) rely on the feeding mechanism to continuously feed the conductive auxiliary electrodes. The conductive auxiliary electrodes should be sheet-shaped conductive auxiliary electrodes. One or a combination of more than one of the iron-based materials or non-ferrous metal alloys (such as titanium alloys) that undergo violent exothermic reactions. In order to make the controlled ablation as close as possible to the p...

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Abstract

The invention discloses a controllable and ablated non-conductive engineering ceramic grinding method based on discharge induction, and is characterized in that a conductive metal adhesive grinding wheel is adopted as a grinding wheel, conductive auxiliary electrodes are continuously fed between the grinding wheel and the non-conductive engineering ceramic, electric sparkle discharge is generated between the grinding wheel and the conductive auxiliary electrodes under the action of pulse voltage, and a combustion-supporting gas capable of generating ablation exothermic reaction with the platy conductive auxiliary electrodes is led into a machining area continuously or intermittently during the process, thus leading machining to be in a state of discharge induced by electric sparkle-ablating of auxiliary electrodes-grinding of the grinding wheel on the non-conductive engineering ceramic; the grinding wheel and the conductive auxiliary electrodes generate discharge under the action of the electric sparkle discharge, the conductive auxiliary electrode materials reach over ignition temperature and are in a melting or even gasification state to generate ablating reaction with the combustion-supporting gas capable of generating ablation exothermic reaction, thus producing ablation product, releasing a large amount of heat acted on the surface of the non-conductive engineering ceramic material, and further leading the surface of the non-conductive engineering ceramic to be heated in a softening or even melting state, and removing the grinding under the grinding action of the grinding wheel. The method has the advantages of high machining efficiency, greening and environment friendliness.

Description

technical field [0001] The invention relates to a processing method for difficult-to-machine materials, in particular to a processing method for non-conductive difficult-to-machine materials, in particular to a method that can improve the processing efficiency of non-conductive engineering ceramics, quickly remove materials and ensure the quality and precision of the processed surface Grinding method of non-conductive engineering ceramics based on discharge-induced controlled ablation. Background technique [0002] It is well known that non-conductive engineering ceramics (including Al 2 o 3 , ZrO 2 、Si 3 N 4 , SiC, etc.) are increasingly widely used in machinery, electronics, metallurgy, chemical industry, petroleum geological drilling, aviation, etc. aerospace and nuclear industries. Modern industry has higher and higher requirements on the processing efficiency, surface quality and precision of engineering ceramic components, but the existing hot pressing, sintering...

Claims

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Application Information

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IPC IPC(8): B23P23/02B23H7/34
Inventor 刘志东田宗军邱明波汪炜王祥志黄因慧
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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