论文部分内容阅读
硬质合金的性能随烧结工艺的不同而会发生变化,本文在1 380℃,经真空烧结和压力烧结(4 MPa)制备超细WC-6%Co-0.6%(VC/Cr3C2/TaC)(质量分数)硬质合金,分别采用SEM分析、XRD检测、钴磁检测、矫顽磁力检测、洛氏硬度检测、抗弯强度检测等方法,对比研究了真空烧结和压力烧结对合金显微组织和力学性能的影响。结果表明:与真空烧结相比,压力烧结提高了合金的相对密度,降低了孔隙度,从而提高了合金的综合性能。本次实验中,压力烧结条件下制备的合金相对密度为99.4%,孔隙度为A02B00,硬度为93.8 HRA,TRS为1 830 MPa。
Carbide properties vary with the sintering process. In this paper, ultrafine WC-6% Co-0.6% (VC / Cr3C2 / TaC) was prepared by vacuum sintering and pressure sintering Mass fraction) cemented carbide. The effects of vacuum sintering and pressure sintering on the microstructure and mechanical properties of the alloy were investigated by means of SEM, XRD, Co magnetism test, Coercive force test, Rockwell hardness test and flexural strength test respectively. Effect of mechanical properties. The results show that, compared with vacuum sintering, the pressure sintering increases the relative density of the alloy and reduces the porosity, thus improving the overall performance of the alloy. In this experiment, the relative density of the alloy prepared under pressure sintering conditions is 99.4%, the porosity is A02B00, the hardness is 93.8 HRA, and the TRS is 1 830 MPa.