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据报导,苏联和西方一些国家担心在最近的将来可能缺乏钨的供应,现在已有几个国家正在研制无钨硬质合金。苏联最近研制成功的这种硬质合金有:TM—1,这是一
It is reported that the Soviet Union and some western countries are worried about the possible lack of supply of tungsten in the near future. Several countries are now developing tungsten-free cemented carbides. The recent successful development of the Soviet Union such cemented carbide are: TM-1, this is one