Scientific progress volume ǀ issue ǀ

ǀ
ISSUE 2 
ǀ
2022 
ISSN: 2181-1601
Uzbekistan
 
www.scientificprogress.uz
 
Page 683
METHODS FOR REMOVING DEFECTS ON THE SURFACE OF PARTS IN 
THE PROCESS OF STAMPING 
 
Y. Y. Khusanov
Fergana polytechnic institute 
A. M. Yakupov
Andijan Machine-Building Institute 
 
ABSTRACT
In modern machine-building production, one of the main problems solved in the 
manufacture of parts for various purposes is to ensure the high quality of their working 
surfaces. Among the various technological methods of finishing, hardening methods are 
widely used. One of the most commonly used methods at present is surface plastic 
deformation (SPD). The SPD method is easy to implement, economical, productive, 
provides the formation of low roughness, a given depth and degree of hardening, as well 
as residual stresses, fine-grained structure and other quality indicators of the surface 
layer of machined parts. 
Keywords: 
stamp, technology, plastic, deformation, scientific and methodological, 
quality, zone. 
INTRODUCTION 
The formation of the quality of the surface layer is mainly carried out at the 
finishing operations. One of the highly economical and productive processing methods 
is surface plastic deformation (SPD). The use of SPD makes it possible to reduce 
roughness, obtain the required microprofile of the surface, strengthen the surface layer 
with a given degree, obtain favorable residual stresses, etc. etc. The level of quality 
indicators achieved as a result of processing, in turn, causes an increase in fatigue 
strength, contact endurance, wear resistance of rubbing surfaces, an increase in contact 
stiffness, and an increase in corrosion resistance. For this reason, PPD has found wide 
application in many branches of engineering production in the manufacture of parts for 
various purposes, made of cast iron, non-ferrous metals and even hardened steels. 
In the field of surface plastic deformation, a large number of both theoretical and 
experimental research results have been obtained. 
Through the efforts of many well-known scientists, a significant contribution has 
been made to the development of the theory of surface plastic deformation, among 
which: Azarevich G. M., Alekseev P. G., Barats Ya. I., Braslavsky V. M., Drozd M. S., 
Zhasimov M. M. , Ilyushin A. A., Ishlinsky A. Yu., Konovalov E. G., Kragelsky I. V., 
Kudryavtsev I. V., Matalin A. A., Matlin M. M., Papshev D. D., Pinegin S. V., 
Proskuryakov Yu. G., Reznikov A. P., Ryzhov E. V., Sidyakin Yu. I., Smelyansky V. 
M., Suslov A. G., Shakhov V. I., Chepa P. A., Shkolnik L. M., Schneider Yu. S., 
Yaroslavtsev V. M. et al. 

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