Title:
METAL PRODUCT SURFACE MEMBER AND METHOD FOR BURNISHING SAME
Document Type and Number:
WIPO Patent Application WO/2020/044585
Kind Code:
A1
Abstract:
The present invention improves surface roughness by knocking down protruding parts while leaving recessed parts in the surface of a metal product, protrusions/recesses having been formed in said surface via blasting, and improves surface hardness and compressive residual stress. Treatment is performed upon a metal product in which protrusions/recesses have been formed in the surface thereof via blasting. Spherical shot that are less hard than the surface hardness of the metal product and have a particle size that is greater than the width of recessed parts of the protrusions/recesses are sprayed toward and collide against the surface of the metal product as crushing shot, and the protruding parts of the protrusions/recesses formed on the surface of the metal product are selectively knocked down, thereby providing a metal product surface member in which the surface roughness of the metal product has been improved.
Inventors:
MIYASAKA YOSHIO (JP)
Application Number:
PCT/JP2018/045956
Publication Date:
March 05, 2020
Filing Date:
December 13, 2018
Export Citation:
Assignee:
FUJI KIHAN CO LTD (JP)
International Classes:
B24B39/00; B24C1/10; C21D7/06; C21D7/08
Foreign References:
| JPH10166271A | 1998-06-23 | |||
| JPH07290363A | 1995-11-07 | |||
| JP2010265926A | 2010-11-25 | |||
| JPH0192069A | 1989-04-11 | |||
| JP2003184883A | 2003-07-03 | |||
| JPH07188738A | 1995-07-25 | |||
| JP2005161419A | 2005-06-23 | |||
| JP2014122652A | 2014-07-03 | |||
| JPH02185370A | 1990-07-19 |
Attorney, Agent or Firm:
OGURA & CO. (JP)
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