发明名称 |
GAS LESS PROCESS AND SYSTEM INCLUDING LIQUEFIED GAS STORAGE TANKS |
摘要 |
A welding system and method is disclosed for girth welding high strength materials, including liquefied natural gas storage tanks, using a short arc welding process and a self-shielding electrode. The welding system contains a welding apparatus which advances the self-shielding electrode towards a workpiece to be welded and controls the arc length and the operation of the apparatus so that the weld satisfies the requirements for welding at least American Petroleum Institute Grade X-80 line pipe, or can weld liquefied natural gas storage tanks. The system additionally contains a power source with a controller for creating a current pulse introducing energy into the electrode to melt the end of the self-shielding electrode and a low current quiescent metal transfer section following the end of the melting pulse during which the melted electrode short circuits against the workpiece. |
申请公布号 |
EP2164669(A1) |
申请公布日期 |
2010.03.24 |
申请号 |
EP20070852416 |
申请日期 |
2007.09.19 |
申请人 |
LINCOLN GLOBAL, INC. |
发明人 |
NARAYANAN, BADRI;SOLTIS, PATRICK, T.;MYERS, RUSSELL, K.;STEWART, ERIC |
分类号 |
B23K9/12;B23K9/23;B23K35/02 |
主分类号 |
B23K9/12 |
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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