| 摘要 |
A manufacturing method of steel sheet blanks for vehicles is provided to prevent a corrosion phenomenon of the parts by uniformly filling a Cu-based brazing powder between joints of steel sheet blanks of parts such as a sensor filler, heating the Cu-based brazing powder in the heating process to melt the Cu-based brazing powder such that the steel sheet blanks are welded to each other without a gap therebetween. A manufacturing method of steel sheet blanks for vehicles comprises the steps of: fabricating a plurality of steel sheet blanks with a desired shape; disposing the plurality of steel sheet blanks such that the steel sheet blanks are superposed on each other, and uniformly filling a Cu-based brazing powder between the steel sheet blanks; heating superposed portions of the steel sheet blanks having the Cu-based brazing powder filled therebetween to a heat treatment temperature of 850 to 950 deg.C in a heating process; and melting the Cu-based brazing powder at 450 deg.C or more by the heating process to weld the steel sheet blanks to each other such that a gap is not formed between the steel sheet blanks.
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