| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a knife blade simple in mass production, and to provide an appropriate method for manufacturing such a knife blade. <P>SOLUTION: The composite knife blade includes a cutting edge piece of a first alloy, a back piece of a second alloy different from the first alloy, the cutting edge piece and the back piece are brazed together at a serpentine joint. The cutting edge piece has a high Rockwell hardness value, as compared to a hardness of the back piece. The method for manufacturing the knife blade includes finely blanking the back piece from a sheet of the first alloy, laser cutting the cutting edge piece from a sheet of the second alloy, and brazing the first piece to the second piece to form a composite blade. The composite blade is then cooled from the brazing temperature to an austenizing temperature of the cutting edge piece, and quenched to harden the cutting edge piece. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
