| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive cutting tool having a cutting quality equal to or higher than that of a carbon steel kitchen knife and generating no rust similarly to a stainless steel kitchen knife by builup-welding or pressure bonding a high hard material to the knife edge part of a main body composed of a stainless material, and forming a cutting blade by polishing this buildup welding part or a pressure bonding part. SOLUTION: A plate material composed of austenite stainless steel (SUS 304) as a stainless material generating no rust is adopted as a raw material of a kitchen knife main body 1, and this is cut in a prescribed shape by a laser beam. The knife edge 2 is formed by buildup-welding a high hard material such as stellite to a knife edge part 1b, and a cutting blade is formed by polishing the knife edge 2. A handle is attached by using a handle attaching nail hole 1c to complete a kitchen knife. At this time, after heating the knife edge 2 to a temperature of 500 to 800 deg.C, a naturally cooling heat treatment is desirably applied. While, a disk-shaped cutting tool 3 is formed in a sandwich shape by sandwiching a stellite material 3a of a central layer between aluminum alloys (3003, 5083) 3b of upper/lower layers.
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