| 摘要 |
PURPOSE:To manufacture a can barrel without contamination of a can manufacturing environment and a can content caused by scattering of grinding powders, with high coating film adhesion of a welding repair coating part and high reliability. CONSTITUTION:In a can barrel manufacturing method for which a steel plate formed by shear so that opposed two sides become essentially parallel is deformed to a cylinder type by allowing two parallel sides to be opposed to each other, and welding the two superposed sides to the can barrel, the carbon content of steel plate is made to <=0.20wt.%, the metal Cr layer of lying amount <=300mg/m<2> is provided on the front surface of steel plate, further the Cr hydration oxide layer of sticking amount <=30mg/m<2> by changing it into metal Cr is provided on them, and when in welding, the welding velocity is made as V (mpm), the welding power source frequency is as F (Hz), the thickness is at t (mm), the welding is executed without mechanically grinding the welding part in the condition satisfying equation (I). 0.48>=V/t.F...(I). |
