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三牙轮钻头是石油钻井不可缺少的重要工具。为了提高钻头零部件易损表面的使用寿命,采用氧乙炔焰金属粉末堆焊工艺,堆焊钻铬钨耐磨合金,涂层硬度 HRC54～58。因此,给机械加工带来了很大困难,刀具磨损极其严重。为了推广堆焊的先进工艺,解决涂层表面的切削加工是关键课题之一。本文阐述了加工耐磨合金的试验方法,并分析用新刀具材料 YH硬质合金刀片的原因,最后做了简单的经济效果分析。可供生产钻头工厂和科研部门的机械加工人员参考。
Tricone bit is an indispensable tool for oil drilling. In order to improve the service life of the vulnerable parts of the drill bit parts, the oxyacetylene flame metal powder surfacing process is used, and the surfacing welding drill chrome tungsten wear-resistant alloy is coated with the hardness HRC54-58. Therefore, to the mechanical processing has brought great difficulties, tool wear is extremely serious. In order to promote the advanced welding surfacing, coating the surface to solve the cutting is one of the key issues. This article describes the test methods for machining wear-resistant alloys and analyzes the reasons for using new tool material YH cemented carbide inserts. Finally, a simple economic analysis is done. For the production of bit factory and scientific research department of mechanical processing personnel reference.