发明名称 |
ATMOSPHERE CONTROL DURING CONTINUOUS HEAT TREATMENT OF METAL STRIPS |
摘要 |
The invention concerns a method for metal strip heat treatment comprising: passing the strip inside a chamber through a heating zone, and a cooling zone, and establishing a first protective gas atmosphere containing nitrogen and a first hydrogen content in the chamber, except for the cooling zone, wherein is adjusted a second protective gas atmosphere containing nitrogen and a second hydrogen content higher than the first, introducing nitrogen into the chamber, injecting protective gas containing a third hydrogen content higher than said second content in said cooling zone, producing a gas exchange between one zone of the chamber having said first protective gas atmosphere and said cooling zone, and controlling the flow of said introduction and said injection. |
申请公布号 |
WO2004024959(A1) |
申请公布日期 |
2004.03.25 |
申请号 |
WO2003BE00149 |
申请日期 |
2003.09.11 |
申请人 |
DREVER INTERNATIONAL S.A.;RAICK, JEAN-MARC;CRUTZEN, JEAN-PIERRE;DOSOGNE, EDGARD;RENARD, MICHEL |
发明人 |
RAICK, JEAN-MARC;CRUTZEN, JEAN-PIERRE;DOSOGNE, EDGARD;RENARD, MICHEL |
分类号 |
C21D1/76;C21D9/56;C21D9/573;G11B33/04 |
主分类号 |
C21D1/76 |
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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