| 摘要 |
PURPOSE:To weld with laser beam the porous sintered material each others or the above sintered material with the steel material without generating of the low temperature crack or the blow hole. CONSTITUTION:While feeding the filler material containing one kind, at least, among Cr, Mo and Si, one kind, at least, among Ni, C and Mn, and one kind, at least, among Al, Ti, Zr and V, the material to be welded is irradiated with the laser beam. The proper filler material is incorporated with components so as to satisfy Y>=-(1/3)X+23, Y>=12 (but, X=Cr(%)+Mo(%)+1.5 Si(%), Y=1.2 Ni(%)+20C(%)+0.8Mn(%)), further, is incorporated with 0.3-5% of one kind, at least, among Al, Ti, Zr and V, and the wire diameter is <=1.6mm, and in regard to the filter material supplying quantity of the welding time, the welding condition in which the equation y=425X850 (but, x: laser power (KW), y: wire supplying quantity (mm<3>/min)) is satisfied, is preferable in practice. |
