Method of shot peening processing and article processed thereby, and peening material and use thereof
AssigneesSintokogio, Ltd., Sintobrator, Ltd., Akihisa Inoue
InventorsAkihisa Inoue, Junkou Kurosaki, Kiyoshi Okumura, Kouji Kajita
Life of this patent
Estimating the term…
Abstract
A method for shot peening wherein peening shot having a Vickers hardness (Hv) in the range of 900-1100 and a Young's modulus of 200,000 MPa or less, is used, and wherein a treated article is obtained by such a method that has a maximum residual compressive stress of 1600 MPa or more and a surface roughness of 5 microns or less.
Claims11
A method for shot peening a metal substance, comprising projecting at a metal substance shot having a Vickers hardness (Hv) in the range of 900-1100 and a Young's modulus of less than or equal to 200,000 MPa.
A method for shot peening a metal substance made of steel having a Vickers hardness of 950 or less, comprising projecting shot made of an iron-based amorphous spherical particle at said metal substance, whereby said peened metal substance has a maximum residual compressive stress of 1600 MPa or more and a surface roughness of 5 microns or less.
Shot having a Vickers hardness in the range of 900-1100 and a Young's modulus of 200,000 MPa or less.
Dependencies are inferred from the claim text.