軟鋼サブマージアーク溶接部のビード形状・溶込み・凝固組織におよぼす磁気攪拌の影響 : 溶接部の諸特性におよぼす磁場の影響(第 1 報)

概要

論文の詳細を見る
It is well known that the effect of longitudinal magnetic field on weld zone causes a turning of arc column and a turbulance of mloten pool. That is to say, magnetic stirring is generated. The influence of the magnetic stirring on the weld zone in the case of TIG or MIG welding has already been reported. According to the reports number of blowholes decreases, and reduction of grain to small size and improvement of welding speed can be expected. But the result in the case of Submerged-arc Welding has not been reported yet. This report investigates the influence of magnetic stirrig on the weld zone by Submerged-arc Welder with magnetic equipment. The results obtained from these studies are as follows : 1) The bead becomes wider up to a certain strength of magnetic field, but it becomes narrower again when the magnetic field strength exceeds a certain limit. 2) The depth of penetration also shows the same tendency as the bead width. It becomes shallower up to a certain limit. 3) The heihgt of reinforcement increases in proportion to the degree of magnetic field strenght. 4) The average sectional area of bead does not change so much. 5) Magnetic stirring minimizes the primary crystals of weld metal. But their minimization has a certain limit. It cannot be minimized beyond the limit.
社団法人溶接学会の論文
1972-07-25