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随着高硬度高强度材料需求量的增加,对难切削材料的加工效率也提出了更高的要求。为适应这一需要,现已研制出加工难切削材料的陶瓷刀具。一、陶瓷刀具材料陶瓷刀具的研制开发始终以提高强度为目标,最初研制的高纯度氧化铝陶瓷刀具,其抗弯强度为30～40kgf/mm~2,最新研制的氮化硅陶瓷刀具,其抗弯强度为100～110kgf/mm~2,提高了近3倍。目前在市场上出售的陶瓷刀具材料为:高纯度氧化铝、氧化铝—碳化物和氮化硅。其中用于加工难切削材料的是氧化
With the increasing demand of high hardness and high strength materials, the machining efficiency of difficult-to-cut materials is also put forward higher requirements. In order to meet this need, we have developed a ceramic cutting tool for difficult-to-cut materials. First, the development of ceramic cutting tools ceramic tools has always been to improve the strength as the goal, the initial development of high purity alumina ceramic cutting tools, the bending strength of 30 ~ 40kgf / mm ~ 2, the latest development of silicon nitride ceramic cutting tools, the Flexural strength of 100 ~ 110kgf / mm ~ 2, an increase of nearly 3 times. Currently on the market for the sale of ceramic tool materials: high purity alumina, alumina - carbide and silicon nitride. Among them for the processing of difficult to cut material is oxidation