| 摘要 |
PURPOSE:To reduce a spatter and to improve the shape of a bead by containing C, Si, Mn, S, Ti, O in a specific wt.%, and balance Fe and limiting the value of CXO and the mixture amt. of Al and N at <=a specific %. CONSTITUTION:The composition of a wire is taken as 0.005-0.04% (weight is same on the rest) C, 0.30-0.80% Si, 1.40-2.40% Mn, 0.01-0.035% S, 0.05-0.15% Ti, 0.0030-0.025% C, the Al to be mixed is regulated <=0.020% and N <=0.0050%, the value of CXO is limited to <=4X10<-4> and the balance is taken as Fe and impurities. The C, S components refines the spatter droplet and the generation of CO gas can be restrained with the limitation of the CXO value, so the large granulation of spatters is prevented and the generation amt. is reduced as well. The bead shape is improved because of the S component preventing the generation of a bead undercut. |
