黑色金属压铸是目前世界上一项少、无切削新工艺,已经有几十年的研究历史,多年来虽曾压铸出许多性能可与锻件相当的精密铸件,但主要因为模具寿命太短、不合算而一直不能投产,直至七十年代初,在国外宣传说是采用了难熔金属钼基合金做模具,便获得较快发展。我国自1967年开始就将钼 Black metal die-casting is a small, non-cutting new technology in the world. It has decades of research history. Although many die-castings with performance comparable to forgings have been die-cast over the years, the main reason is that die life is too short, Cost-effective and has been unable to put into production, until the early seventies, foreign propaganda that the use of refractory metal molybdenum-based alloy as a mold, it achieved rapid development. China since 1967 will be molybdenum