发明名称 |
METHODS FOR EXTENDING THE LIFE OF ALLOY STEEL WELDED JOINTS BY ELIMINATION AND REDUCTION OF THE HAZ |
摘要 |
In one embodiment, the present invention provides a method for welding together two metal pieces, comprising buttering a surface of a first metal piece with a first nickel-based filler metal at a thickness sufficient to isolate a heat-affected zone in the first metal piece from subsequent welding; heat-treating at least the heat-affected zone in the first metal piece; buttering a surface of a second metal piece with a second nickel-based filler metal having the same composition as the first nickel-based filler metal and at a thickness sufficient to isolate a heat-affected zone in the second metal piece from subsequent welding; heat-treating at least the heat-affected zone in the second metal piece; and welding the heat-treated first buttered surface to the heat-treated second buttered surface with a third nickel-based filler metal having the same composition as the first and second nickel-based filler metals. |
申请公布号 |
KR20070072549(A) |
申请公布日期 |
2007.07.04 |
申请号 |
KR20077009599 |
申请日期 |
2005.09.19 |
申请人 |
ELECTRIC POWER RESEARCH INSTITUTE |
发明人 |
COLEMAN KENT K.;GANDY DAVID WAYNE;VISWANATHAN RAMASWAMY |
分类号 |
B23K9/235;B23K9/067;B23K9/23 |
主分类号 |
B23K9/235 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|