FIELD: technological processes.
SUBSTANCE: invention relates to formation of compressive residual stress during bead-blasting treatment. Control plate surface made from the processed part material is blasted and the deformed control plate deflection arm is measured. Jet of shot pressure is determined by formula
where σT – yield point of treated part material, MPa, μ is the Poisson ratio of the processed material, E is the modulus of elasticity of the treated material, MPa, α is an angle of inclination of jet of shot to processed surface, deg.
EFFECT: as a result, formation of compressive residual stresses in part surface layer is provided.
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