The problems of modeling the fracture process under conditions of plastic restructuring of the material structure, the transformation of the strength state of the material of plastically deformable workpieces into the state of the product material, the acoustic emission assessment, which determines the defectiveness of the final product of the predisposition of the workpiece defects to development during the rolling process, are considered.

No abstract

Перспективным для достижения структурной однородности, сочетания высокой прочности и пластичности может быть использование горячей пластической деформации сварных швов в температурно-скоростных режимах проявления эффекта сверхпластичности металлов.

Abstract-

The paper presents data on the parameters that determine the quality of the surface layer of the pump plunger, such as roughness and hardness. The results of the study of the quality of the surface layer of the pump plunger, after turning with a blade tool and after ultrasonic hardening and finishing processing, are presented. Analysis of the obtained results of the state of the surface layer shows a significant decrease in roughness and an increase in the surface hardness of the plunger as a result of ultrasonic hardening and finishing processing, which contributes to an increase in the service life of the part.