发明名称 |
Functionally graded compositional control methods to eliminate dissimilar metal welds (DMWs) during manufacture of integral headers |
摘要 |
<p>A method of manufacturing a header assembly having a header section and a tube section includes the steps of providing a reverse mold of the header assembly, forming the header section by filling a header section of the reverse mold with an atomized low alloy steel powder, and forming the tube section. The tube section is formed by filling a first portion of a tube section with an atomized low alloy steel powder, forming a transition region by filling a second portion of the tube section with a series of atomized steel powders incrementally from a low alloy steel to an austenitic stainless steel, and filling a third portion of the tube section with an atomized austenitic stainless steel powder. The method further includes the step of consolidating and melting the atomized powders in a high temperature, high pressure atmosphere.</p> |
申请公布号 |
EP2527063(B1) |
申请公布日期 |
2013.07.24 |
申请号 |
EP20120168167 |
申请日期 |
2012.05.16 |
申请人 |
ELECTRIC POWER RESEARCH INSTITUTE, INC. |
发明人 |
GANDY, DAVID W.;SHINGLEDECKER, JOHN |
分类号 |
B22F3/15;B22F5/12;B22F7/06;F22B37/22 |
主分类号 |
B22F3/15 |
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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