- 专利标题: Vermicular Cast Iron Alloy for Internal Combustion Engine Block and Head
-
申请号: US16337028申请日: 2017-09-29
-
公开(公告)号: US20200032377A1公开(公告)日: 2020-01-30
- 发明人: Wilson Luiz GUESSER , Carlos De Souza CABEZAS , Eitan MELLERAS , Vanessa MAIS , Ailton Luiz MULLER
- 申请人: TUPY S.A.
- 优先权: BRBR1020160226902 20160929
- 国际申请: PCT/BR2017/050295 WO 20170929
- 主分类号: C22C37/00
- IPC分类号: C22C37/00 ; C22C33/08 ; C22C38/00 ; C21D1/06 ; F02F1/00
摘要:
The present invention refers to a vermicular cast iron alloy specially designed for internal combustion engine blocks and heads having special requirements of mechanical strength and fatigue strength. Vermicular iron alloy with high mechanical strength and high fatigue strength for the production of internal combustion engines blocks and heads characterized by having a microstructure of pearlitic matrix and predominantly vermicular graphite (>70%) and presence of graphite nodules in up to 30%, wherein its graphite microstructure is described by the Microstructure Factor (FM), as defined below, with Microstructure Factor values higher than 0.94.