造船用鋼材の腐蝕に関する一実験
前歴歪および溶接の影響
1956 年 5 巻 38 号 p. 649-653
詳細
1956 年 5 巻 38 号 p. 649-653
In order to study the effects of prestrain and welding on the corrosion of ship structural rimmed steel, we have performed some experiments to decide the degree of corrosion by measuring the electrical resistance increment of test pieces.
The results obtained are as follows:
(1) Steel becomes more sensitive to corrosion as the amount of pre-strain increases.
(2) Particularly, the corrosion of steel which contains weldment is seriously precipitated.
(3) The effects of pre-strain on the corrosiveness of steel have been reduced by welding which produces a large quantity of heat such as union melt welding.
(4) The rim part of steel in more anticorrosive than the core part.
