SUBMERGED ARC WELDING WIRE AND WELDING METHOD
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United States of America Patent
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app pub date -
Jul 30, 2014
filing date -
Jun 11, 2014
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Abstract
Disclosed is a submerged arc welding wire, comprising the following at mass percentage: 0.85-1.60% of Mo; 2.50-4.50% of Ni; 0.10-0.30% of Ti; 0.005-0.02% of B; 0.005-0.02% of REM; 1.60-2.00% of Mn; C which is greater than 0 and less than or equal to 0.06%; Si which is greater than 0 and less than or equal to 0.10%; P which is less than or equal to 0.008%; S which is less than or equal to 0.006%; and the balance being Fe. Also disclosed are a welding method and a weld metal. The welding process by the submerged arc welding wire and welding method and the welded welding joint have relatively high tensile strength and relatively good low temperature toughness, and the welding process has a relatively high welding speed, so that the requirements for X120 pipeline welding and pipe manufacturing can be satisfied.
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