METHOD FOR MANUFACTURING BLASTING MATERIAL FOR SHOT-PEENING

Title:

METHOD FOR MANUFACTURING BLASTING MATERIAL FOR SHOT-PEENING

Document Type and Number:

WIPO Patent Application WO/2010/061816

Kind Code:

A1

Abstract:

Provided is a method for manufacturing a blasting material for shot-peening with which a reliably high level of hardness can be achieved while preventing an increase in the material cost. Quenchable steel is used as a material in a blasting material manufacturing step (S10). After granules (4) which are quenched by means of a water atomization method are formed in a quenching step (S20), the granules (4) are tempered inside a heating furnace (5) at a prescribed temperature (from 130‑230°C, and preferably from 160‑230°C) for a prescribed amount of time in a tempering step (S30). A work hardening treatment is applied in a work hardening step (S40) wherein the granules (4) are blasted/bombarded onto a target material (7) to apply stress to the granules (4) using a shot-peening machine (6).

Inventors:

MITSUBAYASHI MASAHIKO (JP)
KANAZAWA TAKAAKI (JP)
ISHIKAWA MASAYUKI (JP)

Application Number:

PCT/JP2009/069794

Publication Date:

June 03, 2010

Filing Date:

November 24, 2009

Export Citation:

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Assignee:

SINTOKOGIO LTD (JP)
MITSUBAYASHI MASAHIKO (JP)
KANAZAWA TAKAAKI (JP)
MASAYUKI ISHIKAWA (JP)

International Classes:

B24C11/00; B22F1/00; B22F9/08; B24C1/10; C21D7/06

Foreign References:

JPH083633A	1996-01-09
JPH07276242A	1995-10-24

Other References: