发明名称 |
METHOD OF BONDING STEEL MEMBERS, METHOD OF ENHANCING BONDING STRENGTH OF UNITED OBJECT COMPRISING STEEL MEMBERS, STEEL PRODUCT, AND DIE-CAST PRODUCT |
摘要 |
A method of steel member bonding in which steel members made of a chromium-containing steel material are bonded to each other. The method of steel member bonding comprises in the following order: a united-object formation step (S10) in which two or more steel members are butted and heated to a first temperature while pressing them against each other under given pressure conditions to thereby form a united object; and a bonding strength enhancement step (S30) in which the united object is heated to a second temperature not lower than the critical temperature (A<SUB>1</SUB>) of the steel material and then gradually cooled to a third temperature not higher than 600°C under such conditions that the cooling from the critical temperature (A<SUB>1</SUB>) to 600°C takes 10 hours or longer. By the method of steel member bonding, even when steel members made of a chromium-containing steel material are bonded to each other to produce a united object, sufficiently high bonding strength can be obtained. |
申请公布号 |
WO2007108058(A1) |
申请公布日期 |
2007.09.27 |
申请号 |
WO2006JP305296 |
申请日期 |
2006.03.16 |
申请人 |
KITAZAWA, TOSHIAKI;FUJIMORI, TAKAYUKI |
发明人 |
KITAZAWA, TOSHIAKI;FUJIMORI, TAKAYUKI |
分类号 |
B23K20/227;B23K31/00;C21D9/50 |
主分类号 |
B23K20/227 |
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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