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Title:
CUTTING TOOL MATERIAL, METHOD FOR MANUFACTURING CUTTING TOOL MATERIAL, AND CUTTING TOOL
Document Type and Number:
WIPO Patent Application WO/2018/216641
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a cutting tool material manufacturing method that is capable of manufacturing a cutting tool achieving both corrosion resistance and high hardness. This problem was found to be solved by forming a cutting edge through a combination of laser build-up welding with use of martensitic stainless steel. Specifically, using the laser build-up welding with metal particles being used as raw material was found to facilitate preparation of an alloy component/alloy tissue which satisfies wear resistance and toughness required of the cutting edge while maintaining corrosion resistance equivalent to stainless steel. In other words, the method for manufacturing a cutting tool material according to the present invention which solves the above problem has a cutting edge forming step for forming a cutting edge made of the martensitic stainless steel by carrying out, at least one time, a laser build-up welding step in which an iron metal particle material made of martensitic stainless steel is supplied to the surface of a body material and the body material and a built-up layer made of the iron metal particle material are integrated by means of a laser beam.

Inventors:
KOYAMA, Kazuyoshi (1-1 Nakaoguchi, Ohguchi-cho, Niwa-gu, Aichi 92, 〒4800192, JP)
Application Number:
JP2018/019442
Publication Date:
November 29, 2018
Filing Date:
May 21, 2018
Export Citation:
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Assignee:
KANEFUSA KABUSHIKI KAISHA (1-1 Nakaoguchi, Ohguchi-cho Niwa-gu, Aichi 92, 〒4800192, JP)
International Classes:
B23P15/28; B23K26/342; B27C7/00
Attorney, Agent or Firm:
OHKAWA, Hiroshi (2-5 Meieki 3-chome, Nakamura-ku Nagoya-sh, Aichi 02, 〒4500002, JP)
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