论文部分内容阅读
以Co粉和粗粒度的WC粉为原料，混料后，压制成低含Co量的WC-Co粉末压坯，再在高温真空炉中烧结得到了低钴粗晶的WC－Co烧结体。重点研究了真空烧结温度、时间和真空度等对烧结体物理机械性能的影响。试验结果表明，烧结工艺条件对烧结体的性能有着决定的影响，通过控制适当的工艺条件，可以得到兼有高硬度和高韧性的低钴粗晶合金，其综合性能明显优于相同含Co量的普通YG合金。
Using Co powder and coarse-grained WC powder as raw materials, WC-Co sintered compact with low cobalt coarse-grained was obtained by pressing WC-Co powder compact with low Co content and sintering in high-temperature vacuum furnace. The effects of vacuum sintering temperature, time and degree of vacuum on the physical and mechanical properties of the sintered body are mainly studied. The experimental results show that the sintering process conditions have a decisive influence on the properties of the sintered body. By controlling the appropriate process conditions, the low cobalt coarse-grained alloy with both high hardness and high toughness can be obtained. The comprehensive performance is obviously better than that of the same Co content Of ordinary YG alloy.