Zirconium diboride-silicon carbide-copper nickel electrode material and preparation method thereof

A zirconium diboride, copper-nickel electrode technology, applied in the application field of EDM electrode materials, can solve the problems of poor dimensional stability, electrode material loss, etc., and achieve the effect of improving electrical conductivity, high temperature strength and ablation resistance

Inactive Publication Date: 2015-03-11
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a zirconium diboride electrode material and its preparation method in order to solve the problems of poor dimensional stability and serious loss of electrode materials on the existing precision electric machining machine tools

Method used

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  • Zirconium diboride-silicon carbide-copper nickel electrode material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0020] The preparation method of the present embodiment zirconium diboride electrode material is realized according to the following steps:

[0021] 1. Weigh 60% zirconium diboride powder, 25% silicon carbide powder and 15% copper-nickel mixed powder as raw materials according to mass percentage, then place the weighed raw materials in a ball mill, and disperse them with absolute ethanol agent, the rotating speed of the ball mill is 400rpm, and the ball-to-material ratio is 5:1 under the condition of ball milling and mixing for 8 hours to obtain the slurry;

[0022] 2. Dry the slurry obtained in step 1 under vacuum conditions at a temperature of 80° C., place the dried slurry in an agate mortar and grind to obtain a mixed powder;

[0023] 3. Place the mixed powder obtained in step 2 under the protection of argon-hydrogen mixed gas, and heat-preserve and sinter for 1 hour under the conditions of atmospheric pressure 5×103Pa, temperature 1850°C, and sintering pressure 30MPa to o...

Embodiment 2

[0026] The difference between this example and Example 1 is that step 1 weighs 65% of zirconium diboride powder, 30% of silicon carbide powder and 5% of copper-nickel mixed powder as raw materials.

Embodiment 3

[0028] The difference between this example and Example 1 is that step 1 weighs 55% zirconium diboride powder, 35% silicon carbide powder and 10% copper-nickel mixed powder as raw materials according to mass percentage.

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Abstract

Belonging to the technical field of electrical discharge machining electrode material application, the invention in particular relates to a zirconium diboride-silicon carbide-copper nickel electrode material and a preparation method thereof. The electrode material is composed of 55%-65% of zirconium diboride powder, 20%-40% of copper nickel powder mixed silicon carbide powder, and 5%-15% of copper-nickel mixed powder, wherein the copper-nickel mixed powder is formed by ball mill mixing of copper powder and nickel powder in a mass ratio of 9:1. According to the invention, by introducing silicon carbide powder and copper nickel powder into the zirconium diboride composite material system, on the one hand, the conductive property of the zirconium diboride based composite material is greatly improved, and on the other hand, the high temperature strength and ablation resistance of the material are improved. At the same time, mechanical alloying is utilized to lower the sintering temperature of the zirconium diboride composite material, thus preparing the zirconium diboride composite material with excellent performance.

Description

technical field [0001] The invention belongs to the technical field of application of electric discharge machining electrode materials, and in particular relates to a zirconium diboride-silicon carbide-copper nickel electrode material and a preparation method thereof. Background technique [0002] The machining quality of precision electric machining machine tools mainly depends on the electrode material, among which the electrical conductivity and ablation resistance of the electrode material have the greatest impact on the quality of the machined surface. The good electrical conductivity of the material can ensure the smooth arc ignition and discharge between the processing electrode and the workpiece, which is beneficial to the removal (ablation) of the processed material; the good ablation resistance of the material can reduce the electrode burning loss during the electrical machining process and improve the machining efficiency. shape precision. For traditional electro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/58C04B35/622
Inventor 姜涛杨宏青樊喜刚丁国智师智斌郑景珍张岚徐宝德韩文波伏金娟
Owner HARBIN INST OF TECH
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