高温合金加工用PcBN复合片的研制

Development of PcBN compact for superalloy machining

为研究PcBN刀具在高温合金加工中的应用,通过优化黏结剂成分与cBN微粉的配比,利用国产一米压机,在高温高压的条件下烧结出了大直径的PcBN复合片。超声波扫描检测分析,烧结产品基本无分层、裂纹等缺陷。在同等的加工条件下,从车削高温合金的对比检测数据中,分析得出样品的PcBN刀具寿命已经达到国外竞品的水平。

In order to study the application of PcBN tool in superalloy machining,by optimizing the ratio of binder composition and cBN micro powder,the large diameter PcBN compact is sintered under high temperature and high pressure.Scanning acoustic microscope(SAM)analysis shows that the sintered products have no defect such as delamination,crack.Under the same processing condition,the PcBN tool of the sample has reached the level of foreign competing products from the comparative detection data of turning superalloy.