【摘要】 采用剪切模压新工艺成型，通过真空烧结制备出了超细晶粒WC－Co硬质合金。研究了不同成型剂的特性、成型剂的配比、加入量以及压制力对剪切模压成型的影响。研究结果表明，采厅剪切模压成型工艺可获得很高的成型质量，从而制备出具有较好物理力学性能的超细WC—C。因质合金。更多还原

【Abstract】 In this article, a new shaping processing i. e. combined shaping processing(shearing shaping plus dTy pressing) was in-troduced, and with vacuum sintering, ultrafine - grained WC - Co cernented carbides was produced. The effects of drypressing stress, features, content and ratios of various shaping agents on quality of the combined shaping were also studied.The results show that the combined shaping processing can improve shaping qua]ity, and endow ultrafine-grained WC-Cocemented carbides with perfect physical mechanic performance.更多还原