硬度是衡量超硬材料烧结体的主要特性之一。
Hardness is one of the main characters of ultrahard material sinters.
介绍采用热化学共渗法对硬质合金拉丝模芯进行超硬化处理，以提高其表面硬度的方法。
The article introduces the method of superhardening treating hard alloy drawing die core with thermochemistry copermeation method so as to improve its surface hardness.
材质：超微粒钨钢，用于硬度在HR200-HB300R的中碳钢，铸铁的细线加工用于加工骨料，石料，以及影象打点。
Material: imported ultra-fine particle tungsten steel, applies to medium carbon steel with rigidity HR200-HB300R, aggregate, stone and image RBI.
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