GREY CAST IRON ALLOYED WITH MANGANESE FOR SHEET METAL FORMING DIES FOR AUTOMOTIVE APPLICATIONS

摘要

Present invention is related to the iron compositions to be used for draw dies for manufacturing the automotive stampings. According to this invention Grey Cast Iron is alloyed with Manganese instead of expensive Molybdenum. The dies with new alloy chemistry the casting process described above & mist cooling process for flame hardening gives equivalent properties & die performance in actual production set up as compared to the Cr-Mo type gray cast irons used for the above application in prior art.