发明名称 |
ULTRAHIGH-STRENGTH MULTIPHASE STEEL WITH IMPROVED PROPERTIES DURING PRODUCTION AND PROCESSING |
摘要 |
In a process for producing a cold- or hot-rolled steel strip from an ultrahigh-strength multiphase steel having a particular composition the required multiphase microstructure is generated during continuous heat treatment. The cold- or hot-rolled steel strip is heated in the continuous heat treatment furnace to a temperature in the range from 700 to 950° C. and the heat-treated steel strip is subsequently cooled from the heat treatment temperature at a cooling rate of from 15 to 100° C./s to a first intermediate temperature of from 300 to 500° C. followed by cooling at a cooling rate of from 15 to 100° C./s to a second intermediate temperature of from 200 to 250° C.; the steel strip is subsequently cooled at a cooling rate of from 2 to 30° C./s in air to room temperature or the cooling at a cooling rate of from 15 to 100° C./s is maintained from the first intermediate temperature to room temperature. |
申请公布号 |
US2015041024(A1) |
申请公布日期 |
2015.02.12 |
申请号 |
US201314375381 |
申请日期 |
2013.01.15 |
申请人 |
SALZGITTER FLACHSTAHL GMBH |
发明人 |
Schulz Thomas;Wedemeier Andreas;Sprock Wilfried;Flaxa Volker;Luther Friedrich;Denks Ingwer;Schulz Sven |
分类号 |
C21D8/02;C22C38/32;C22C38/28;C22C38/26;B62D29/00;C22C38/22;C22C38/06;C22C38/02;C22C38/00;C22C38/38;C22C38/24 |
主分类号 |
C21D8/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
SALZGITTER DE |