| 金属球阀合金球面电火花机械复合磨削加工新方法 |
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| 引用本文： | 刘源添,何建文,郭钟宁.金属球阀合金球面电火花机械复合磨削加工新方法[J].电加工与模具,2014(5):21-23. |
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| 作者姓名： | 刘源添 何建文 郭钟宁 |
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| 作者单位： | 广东工业大学机电工程学院,广东广州,510006 |
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| 基金项目： | 广东省教育部产学研结合项目 |
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| 摘 要： | 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。
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| 关 键 词： | 硬质合金 电火花机械复合磨削加工 金刚石砂轮 青铜结合剂 |
A New Method of Hybrid Electro-discharge and Mechanical Grinding for Alloy Spherical Surface of Metal Ball Valve |
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| Liu Yuantian,He Jianwen,Guo Zhongning.A New Method of Hybrid Electro-discharge and Mechanical Grinding for Alloy Spherical Surface of Metal Ball Valve[J].Electromachining & Mould,2014(5):21-23. |
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| Authors: | Liu Yuantian He Jianwen Guo Zhongning |
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| Affiliation: | ( Guangdong University of Technology, Guangzhou 510006, China ) |
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| Abstract: | 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. |
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| Keywords: | cemented carbide hybrid electro -discharge and mechanical grinding diamond grinding wheel broze-bond |
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