发明名称 |
TITANIUM-STEEL REDUCER |
摘要 |
FIELD: joining by welding of pipes from different materials unweldable by traditional methods of welding by melting. SUBSTANCE: reducer is made in form of bushing from titanium alloy and bushing from stainless steel lap-welded with each other by diffusion welding. Stainless bushing is located on the outside of titanium alloy bushing. Lap welding is effected over cylindrical surfaces with mechanical engagement with each other in form of alternating circular projections and hollows of threaded profile. Diffusion interlayer is not in excess of 20 mcm thick. Bushings cylindrical surfaces in zone of lap welding joint have, at least, one cylindrical step. Thickening of lap welding joint may be made on external or internal side of reducer. EFFECT: higher serviceability of reducer in vital high-temperature pipelines operating under conditions of vibrations and variations of medium temperature in pipeline. 4 cl, 3 dwg
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申请公布号 |
RU2207236(C1) |
申请公布日期 |
2003.06.27 |
申请号 |
RU20020116897 |
申请日期 |
2002.06.24 |
申请人 |
"NAUCHNO-ISSLEDOVATEL'SKIJ I KONSTRUKTORSKIJ INST;ITUT EHNERGOTEKHNIKI IM N A DO;FEDERALNOE GUP |
发明人 |
SEMENOV A.N.;TJURIN V.N.;RIVKIN E.JU.;NOVOZHILOV S.N.;SHEVELEV G.N. |
分类号 |
B23K20/14;B23K101/06;(IPC1-7):B23K20/14 |
主分类号 |
B23K20/14 |
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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