B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
327/41
B23K 9/18 (2006.01) B23K 33/00 (2006.01) B23K 35/36 (2006.01)
Patent
CA 2006695
ABSTRACT OF THE DISCLOSURE A method of submerged arc welding of thick steel plates with a large heat input and flux for submerged arc welding which comprises: forming a groove having a multi-angle shape which has at least two different angular inclination when a single side submerged arc welding for perfect penetration is conducted under a condition of an welding heat input of 100 to 1000 kJ/cm; using submerged arc welding flux SiO2: 5 to 28 % by weight, MgO: 15 to 35 % by weight, CaO: 5 to 15 % by weight, CaF2: 2 to 20 % by weight, Al2O3: 5 to 15 % by weight, and TiO2: 2 to 10 % by weight as the main components, and containing iron powder by 30 % by weight or less and either or both of Si and Mn in the metallic form by 10 % by weight, the submerged arc welding flux having a particle size distribution arranged such that the proportion of the particle which have a size finer than 36 mesh is 20 % by weight or less and the proportion of the particles which have a size 14 mesh or finer but 36 mesh or rougher is 60 % by weight or more; and conducting the welding.
Sakaguchi Shuichi
Yamaguchi Tadamasa
Yamashita Itaru
Kawasaki Steel Corporation
Robic
LandOfFree
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