METHOD FOR MANUFACTURING PROJECTION MATERIALS FOR A SHOT PEENING
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United States of America Patent
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Issued Date -
Apr 12, 2012
app pub date -
Nov 24, 2009
filing date -
Nov 26, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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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 an apparatus for shot peening (6).
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