发明名称 |
CAST IRON MEMBER MANUFACTURING METHOD |
摘要 |
<p>A nitrogen trapping agent is added by a metering hopper to raw materials, which are melted and poured into a mold cavity of a metal mold device (18). The molten metal is then cooled and solidified into a casting (B). Before the molten metal is fully cooled and solidified, free nitrogen present in the molten metal is quickly trapped by the nitrogen trapping agent, producing a nitride. Then, a chilled structure generated in the surface layer of the casting (B) is decomposed by heating the casting (B). Finally, the heated casting (B) is machined into a camshaft (A) which is a cast iron member as a final product. <IMAGE></p> |
申请公布号 |
EP1433549(A1) |
申请公布日期 |
2004.06.30 |
申请号 |
EP20020772930 |
申请日期 |
2002.09.26 |
申请人 |
HONDA GIKEN KOGYO KABUSHIKI KAISHA |
发明人 |
WATANABE, TAKAO;ONUMA, TOSHIAKI;UEDA, YOSHIMI;SASAKI, TAKESHI |
分类号 |
B22D1/00;B22D27/18;B22D27/20;C21C1/04;C21C1/08;C21C7/04;(IPC1-7):B22D1/00;B22D15/00 |
主分类号 |
B22D1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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