发明名称 |
Werkstuecke und Bauteile aus Eisenwerkstoffen mit einer Verschleissschicht und Verfahren zu deren Herstellung |
摘要 |
A ferrous article comprising an integrally bonded hard chromized external layer containing a chromium nitride complex layer is formed by nitriding and chromizing heat treatments. A high carbon chrome steel is cleaned and dried at 200-250 DEG F; heated at 15-35 DEG F. for 90-100 minutes in an atmosphere of endothermic gas, raw natural gas and ammonia; quenched in oil and air cooled. It is then reheated to 325-350 DEG F; drawn to relieve stresses and chromized. The Cr is diffused into the article from a source, a Cr hydrohalide powder pack or a Cr composition coating applied to the article. |
申请公布号 |
DE1521237(B1) |
申请公布日期 |
1970.04.23 |
申请号 |
DE19641521237 |
申请日期 |
1964.11.18 |
申请人 |
FORMSPRAG CO |
发明人 |
ZLOTEK THADDEUS FRANK;VARGO EDWARD JOSEPH |
分类号 |
C22C38/18;C23C8/00;C23C12/00;C23C28/00;F16D69/02;(IPC1-7):23C11/04 |
主分类号 |
C22C38/18 |
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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