发明名称 |
Magnesium-treated, decarburizingly-annealed cast iron material |
摘要 |
A magnesium-treated, decarburizingly-annealed cast iron material includes 4% or less carbon by weight, 2% or less silicon by weight, at least 0.010% magnesium by weight, and at least 0.001% sulphur by weight, the remainder being iron. The cast iron material is subjected to a first annealing phase in which graphitic carbon portions are formed. Thereafter, the cast iron material undergoes a second annealing phase during which certain of the graphitic carbon portions are burned out. The resultant structure includes cavities in place of certain of the graphitic carbon portions in a substantially ferritic matrix. The resultant cast iron material exhibits good welding and cutting properties with little susceptibility to hard cracking.
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申请公布号 |
US4900375(A) |
申请公布日期 |
1990.02.13 |
申请号 |
US19870094705 |
申请日期 |
1987.09.09 |
申请人 |
GEORG FISCHER AG |
发明人 |
ALT, ANTON;SCHULTE, GUENTER;TOELKE, PETER;WILHELM, LUDWIG |
分类号 |
C21D5/00;C21C1/10;C21D1/26;C21D5/08;C22C37/00;C22C37/04 |
主分类号 |
C21D5/00 |
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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