Title:
The strengthening method of a metallic mold, and a strengthening metallic mold
Document Type and Number:
Japanese Patent JP6086886
Kind Code:
B2
Abstract:
A method for reinforcing a die is described. A die material made of a high speed tool steel for hot dies including a matrix high speed tool steel, an alloy tool steel for hot dies or a stainless steel is irradiated as an irradiated object with a large-area electron beam so that a smooth surface modification layer of 2 to 5 μm in thickness is formed by elution of a contained substance in the die material. Then, the die material is subjected to a sulphonitriding treatment so that a sulfurized film having a thickness less than the thickness of the surface modification layer prior to the sulphonitriding treatment and containing the sulfur compound of the contained substance more than the sulfur compound of the main substance in the die material, and a diffusion layer of nitrogen and sulfur adjacent to the inner side of the sulfurized film are formed.
Inventors:
Motohiro Inoue
Application Number:
JP2014189261A
Publication Date:
March 01, 2017
Filing Date:
September 17, 2014
Export Citation:
Assignee:
Sodick Co., Ltd.
International Classes:
C23C8/28; B23K15/00; C23C8/02; C23C8/52; C23C8/72
Domestic Patent References:
| JP2003013198A | ||||
| JP2004114151A | ||||
| JP2008138223A |
Previous Patent: The manufacturing method of a coloring constituent, a hardening film, a color filter, and a color fi...
Next Patent: JPS6086887
Next Patent: JPS6086887