Nippon Steel Corporation

Nippon Steel Sumitomo Metal Corporation

Suo Saruwatari

Kazuhiro Kojima

Takashi Namekata

Shuichi Nakamura

Tatsuya Kumagai

A Ni-based alloy wire for submerged arc welding according to an aspect of the present invention includes, as a chemical composition, by mass %, C: 0.001% to 0.060%, Si: 0.01% to 3.00%, Mn: 0.01% to 6.00%, Mo: 15.0% to 25.0%, W: 2.5% to 10.0%, Ta: 0.002% to 0.100%, Ni: 65.0% to 82.4%, Al: 0% to 2.00%, Ti: 0% to 2.00%, Cu: 0% to 1.0%, P: 0% to 0.0200%, S: 0% to 0.0200%, N: 0% to 0.1000%, O: 0% to 0.0100%, Fe: 0% to 10.0000%, Co: 0% to 0.1000%, Cr: 0% to 1.0000%, V: 0% to 0.1000%, Nb: 0% to 0.1000%, B: 0% to 0.0100%, Bi: 0% to 0.0100%, Ca: 0% to 0.0200%, REM: 0% to 0.0300%, Zr: 0% to 0.1000%, and a remainder: impurities; in which a value X is 0.010% to 0.180%.

Ni-based alloy wire for submerged arc welding and method of manufacturing welding joint

A Ni-based alloy core wire for a covered electrode according to an aspect of the invention includes, as a chemical composition, by mass %: C: 0.0100% to 0.0800%; Si: 0.010% to 0.800%; Mn: 0.010% to 1.800%; Mo: 15.0% to 28.0%; W: 2.5% to 8.0%; Cu: 0.10% to 1.20%; Ta: 0.002% to 0.120%; Ni: 65.0% to 82.3%; and a remainder: impurities with other optional selective elements; in which a value X is 0.010% to 0.160%.

Ni-based alloy core wire for covered electrode, covered electrode, and method of manufacturing covered electrode

[Object] There is provided a flux-cored wire capable of obtaining a weld metal having excellent low temperature toughness and improving welding efficiency, in which preheating performed for preventing cold cracking can be omitted or simplified. [Means for Solving Problems] The flux-cored wire includes one or more of CaF, BaF, SrF, MgF, and LiF and, when a total amount thereof is defined as &#x3b1;, the &#x3b1; is 2.0% to 7.0%, by mass %, with respect to a total mass of the flux-cored wire, one or more of a Ti oxide, a Si oxide, a Mg oxide, an Al oxide, a Zr oxide, and a Ca oxide are included in the flux-cored wire, and when a total amount thereof is defined as &#x3b2;, the &#x3b2; is 0.2% to 0.9%, by mass %, with respect to the total mass of the flux-cored wire, a ratio of an amount of the CaFwith respect to the &#x3b1; is 0.90 or more, and a ratio of the &#x3b1; with respect to the &#x3b2; is 3.0 or more and 15.0 or less.

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Tokyo, Japan

Suo Saruwatari