最近の金型用鋼の開発動向

概要

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The trend of the development of recent die and mold steels has been reviewed. With increase in the transplant of automobiles and automotive-parts production to Asian nations, mainland China, especially, high and stable quality die and mold steels have been developed. Among them are aluminum die-casting die steels to meet the severe users requirements such as recommended by NADCA. High strength steel sheets and high strength aluminum alloys being applied to automotive parts for weight reduction, furthermore, high strength cold work die steels are urgently demanded together with surface coating to stand high applied load and wearing conditons. Moreover, near net shaped high precision forming technology in warm and cold forging has improved. To meet these technology, new matrix type high speed steels for forging dies have been developed. Theses grades are characterized by their finely dispersed carbides free from coarse primary carbides and contirbute to prolonged die life. I n the field of plastic injection molds, to meet the main requirement such as precision and super mirror polishing, wide variety new grades have been developed too.
電気製鋼研究会の論文