CPC B26D 7/086 (2013.01) [B26D 1/0006 (2013.01); B26D 7/2614 (2013.01); B26D 2001/002 (2013.01); C22C 29/067 (2013.01); C22C 29/08 (2013.01); Y10S 83/956 (2013.01)] | 20 Claims |
1. An ultrasonic knife, comprising:
a cutting portion formed with at least one cutting edge and a fastening portion formed with an external thread for connection to a sonotrode;
said cutting portion and said fastening portion being formed in one piece from cemented carbide material;
said cemented carbide material comprising hard particles, at least predominantly formed by tungsten carbide, and a metallic binder; and
said external thread of said fastening portion having a thread pitch p and thread turns with a root having a rounded shape with a root radius R being 0.2*p≤R≤0.3*p.
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