Title:
TOOL MATERIAL MANUFACTURING METHOD AND TOOL MATERIAL
Document Type and Number:
WIPO Patent Application WO/2019/156169
Kind Code:
A1
Abstract:
Provided is a method for efficiently improving other mechanical properties (bending stress, toughness, impact resistance, etc.) without significantly impairing the wear resistance and high-temperature softening resistance, etc. of a buildup layer formed by the laser cladding method. In addition, the present invention provides a tool material in which a buildup layer of high-speed tool steel having excellent bending stress, toughness, impact resistance, wear resistance, etc. is formed on the outermost surface of a relatively inexpensive metal substrate. This is achieved by providing a tool material manufacturing method comprising: a laser cladding step of supplying high-speed tool steel powder to the surface of a metal base while irradiating with a laser beam, a spheroidizing annealing step of heat treating the buildup layer at 750°C-880°C, a quenching step of quenching the buildup layer subjected to the spheroidizing annealing step, and a tempering step of tempering the buildup layer subjected to the quenching step.
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Inventors:
ISHIKAWA TAKESHI (JP)
SATUTA TOSHITAKA (JP)
TAKAHASHI KAZUHITO (JP)
YOKOTA TOMOHIRO (JP)
YOSHIDA KENTARO (JP)
NAKAMURA NORIO (JP)
MOTOIZUMI YU (JP)
SATUTA TOSHITAKA (JP)
TAKAHASHI KAZUHITO (JP)
YOKOTA TOMOHIRO (JP)
YOSHIDA KENTARO (JP)
NAKAMURA NORIO (JP)
MOTOIZUMI YU (JP)
Application Number:
PCT/JP2019/004423
Publication Date:
August 15, 2019
Filing Date:
February 07, 2019
Export Citation:
Assignee:
SUMITOMO HEAVY IND HIMATEX CO LTD (JP)
KANAGAWA INSTITUTE OF INDUSTRIAL SCIENCE AND TECH (JP)
KANAGAWA INSTITUTE OF INDUSTRIAL SCIENCE AND TECH (JP)
International Classes:
C21D9/38; B23K26/342; B23P15/28
Domestic Patent References:
WO2016208571A1 | 2016-12-29 |
Foreign References:
JP2016155155A | 2016-09-01 | |||
JPH07204907A | 1995-08-08 | |||
JPH06240418A | 1994-08-30 | |||
JP2001294935A | 2001-10-26 | |||
JPS60141397A | 1985-07-26 | |||
EP3006124A1 | 2016-04-13 |
Other References:
FURUYA, TADASHI: "Tool steel, Special steel", SPECIAL STEEL ASSOCIATION OF JAPAN, vol. 65, no. 5, 1 September 2016 (2016-09-01), pages 30 - 33
Attorney, Agent or Firm:
TOKKYO GYOMUHOJIN YUKON (JP)
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