CAJ | 학술논문

耐高温（≥500℃）、高硬度（≥62 HRC）、耐磨损是大型金属球阀内芯合金球体的特性，球体表面必须进行硬化处理。通常，在球阀球体表面喷WC或镍基合金等高硬度涂层材料，其表面硬度≥62 HRC，但使用传统机械磨削方法加工效率极低。在分析电火花机械复合加工原理的基础上，设计了适用于高硬度回转球面精密磨削加工的方法，并设计制作了一种专用复合工具电极和专用夹具，通过使用青铜结合剂金刚石砂轮的复合工具电极来实现合金球体表面的电火花机械复合磨削加工。
내고온（≥500℃）、고경도（≥62 HRC）、내마손시대형금속구벌내심합금구체적특성，구체표면필수진행경화처리。통상，재구벌구체표면분WC혹얼기합금등고경도도층재료，기표면경도≥62 HRC，단사용전통궤계마삭방법가공효솔겁저。재분석전화화궤계복합가공원리적기출상，설계료괄용우고경도회전구면정밀마삭가공적방법，병설계제작료일충전용복합공구전겁화전용협구，통과사용청동결합제금강석사륜적복합공구전겁래실현합금구체표면적전화화궤계복합마삭가공。
High temperature resistance,high hardness and wear resistance are the properties of alloy surface of the large ball valve ,the surface of the ball must be conducted hardening treatment. Uaually,we spray coating material with high hardness such as WC or Nickel base alloy on the surface of ball. The hardness is exceed or equal to 62 HRC ,which using traditional mechanical griding , machining efficiency is usually low. On the basis of analyzing the principle of the combined method , using precision grinding technology in machining hgih-rigidity ,a special composite tool electrode and clamp are designed. Finally,by composite electrode with bronze-bond diamond wheels,electrical discharge and mechanical combined grinding on the surface of alloy ball is realized.