发明名称 |
METHOD AND SYSTEM FOR CARBURIZING TREATMENT |
摘要 |
PROBLEM TO BE SOLVED: To provide a carburizing treatment method by which uniform carbon concentration at the surface of a material to be treated can be attained, and to provide a carburizing treatment system using the method. SOLUTION: In performing carburizing treatment while varying the pressure in a heating chamber 2 by heating a work in the heating chamber 2 up to carburizing temperature in nitrogen atmosphere and then alternately repeating the evacuation inside the heating chamber 2 and the supply of gaseous chain hydrocarbon, a charging tank 21 having prescribed capacity is used and the gaseous chain hydrocarbon having a prescribed pressure sufficiently higher than the pressure in the heating chamber 2 is temporarily introduced into the charging tank 21 and then discharged into the heating chamber 2.
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申请公布号 |
JP2002115043(A) |
申请公布日期 |
2002.04.19 |
申请号 |
JP20000306651 |
申请日期 |
2000.10.05 |
申请人 |
NIPPON TECHNO:KK |
发明人 |
KABASAWA HITOSHI;NOGUCHI TOMOO |
分类号 |
F16H53/00;C21D1/06;C23C8/20;F16C3/02;F16H55/17;(IPC1-7):C23C8/20 |
主分类号 |
F16H53/00 |
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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