B - Operations – Transporting – 26 – B
Patent
B - Operations, Transporting
26
B
B26B 9/00 (2006.01) B23P 15/40 (2006.01) B26D 1/00 (2006.01)
Patent
CA 2161031
The invention relates to a knife, a knife blade or the like, having a blade body (1) consisting of hardened steel, a wide side surface (2) of which forms the substrate for a flame-sprayed hard material coating (3), the second wide side surface (4) of which remains uncoated, and in which the cutting edge is to be formed by an edge (5) of the coating (3) by a ground surface (A) extending from the uncoated side, the ground surface section (6) of the coating connecting with the ground steel surface section (7) of the blade body (1). In order for a self-sharpening effect to occur during cutting for a knife of this kind, the cutting edge connection of the coating to the substrate must be formed microscopically in such a manner that the actual cutting action is not effected by the steel blade body. To this purpose, a connection of the surface section (6) of the coating to the surface section (7) of the blade body (1) is provided in an aligned step-free manner located in the micro region in such a way that the deviation from the line of alignment is less than the peak to valley roughness dimension of the neighbouring ground surface sections (6, 7).
Grafe Horst
Wordtmann Jurgen E.
Mccarthy Tetrault Llp
Zwilling J. A. Henckels Ag
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