聚晶金刚石—硬质合金复合片木工刀具的研制及其分析

THE RESEARCH AND ANALYSIS OF THE ACCUMULATIVE CRYSTALLIZATION DIAMOND-HARD METALS COMPOSITE WOOD CUTTER

以金属钴(Co)为主要成分的粘结剂,在高温高压下成功地将金刚石微粉与YG15硬质合金合成为聚晶金刚石—硬质合金复合片的超硬材料。经机械性能测试表明:当金刚石含量在85％左右时,聚晶复合片的抗弯强度较理想,适宜作木工刀具。同时,采用HL315硬钎焊解决了与45号钢制刀体的焊接问题。其刃部采用电火花粗磨及陶瓷基金刚石砂轮精磨,满足了聚晶复合片刀头的设计要求。于同类硬质合金刀具相比,其耐用度高20多倍,加工刨花板的刀具损耗费约下降37％,加工的表面质量优良。

With Co as brinder's main component, under high pressure and temperature, the Super hard material of Accumulative Crystallization Diamond Hard Metals Composite Cutter is fully made from diamond micropower and YG 15 of Hard Metals. The test of mechanical performance shows:the bending strenghth is better when the component of diamond is about 80 percentage. It is most suitable for wood cutter. HL 315 as brazing metals can solve the problem when welded with 45 steel cutter holder. The chin part is rough grinded by electric spark and fine grinded by ceramic base diamond grinding wheel. This industrial art can satisfies the design requirement of the Accumulative Crystallization Diamond—Hard Metals composite Cutter. Cutting shaving board under high speed cutting condition can obtains excellent surface quality. The durability of it is 20 times higher than hard metals cutter's. The deterioration cost is decreased about 37 percentage under cutting unit lenghth shaving board.