摘要
针对胎体PDC钻头模具成型困难、生产效率低、石墨模具回收率低等问题,研制出1项砂模成型技术。其要点是制订砂模成型工艺流程,分别确定烧结模具、橡胶模具的成型工艺,试制钻头。试验结果表明:使用该方法制造钻头模具能简化底模铣削工序,提高生产效率;制作的钻头精度高、外观精美、一致性好;石墨模具回收率>60%,大幅降低了石墨模具成本,经济效益和社会效益显著,具有良好的推广前景。
Aiming at the difficulty in modeling of matrix-body PDC bits,low recovery rate of the graphite and low efficiency,it is introduced that the moulds are produced by sand mold die forming.Based on the mould forming process the author summarized that at first design mould forming process,then determine the first mould sintered,rubber mould technique.With the research result,matrix PDC bits have been made on trial basis.Indoor experiments show high mould production efficiency and exquisite profile with good continuance,high precision and consequently achieved the expected purpose.Graphite mould recovery can reach about 60%,greatly reducing the cost of the graphite mould.
出处
《石油矿场机械》
2012年第11期72-74,共3页
Oil Field Equipment
关键词
胎体PDC钻头
石墨模具
砂模成型
matrix-body PDC
graphite mould
sand mould die forming
