Residual Stress Caused by Tilt in Coatings Produced by Powder Material Spraying
V. Yu. Ulyanitskii, D. K. Rybin, A. Yu. Larichkin
Lavrent'ev Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: powder coating, glass shot, cold hardening, hardening depth, microhardness, Almen method, residual stresses
Abstract
In order to study the hardening that occurs during the application of coatings obtained by spraying powder material, experiments were carried out on glass shot blasting of steel test strips using a CCDS2000 detonation complex. Experimental dependences of the cold hardening depth δ and the magnitude of residual stresses σ in the hardened layer on processing parameters (size, density and velocity of particles, strength of the test strip material) were obtained. Engineering formulas are proposed for calculating the values of δ and σ.
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