Актуальные проблемы в машиностроении Том 4 №3 2017

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Актуальные проблемы в машиностроении. Том 4. № 3. 2017 Материаловедение
в машиностроении
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RESEARCH OF INFLUENCE OF REPAIR BY WELDING ON QUALITY
OF OPERATION OF A CAST PARTS FROM 20GL STEEL
Kveglis L.I., (Physics and Mathematics), Professor,
e-mail:
Karavaiceva A.A. Ph.D. student, e-mail:
Siberian Federal University, 79 Avenue Free, Krasnoyarsk, 660041, Russian Federation
Abstract
To improve the efficiency of the process of transportation and to achieve the proper level of
security is required to ensure the appropriate quality of the rolling stock parts. One of the factors
directly affecting the traffic safety on the railways are fracture side frames of freight wagons as a
result of the emergence and development of fatigue cracks. The main type of crack repair is the
process of peeling-off, cutting, and welding. The present study addressed issues related to the
welding defects in cast parts trolley cars. Defects are considered typical between base metal and
weld metal formed during welding.
Keywords
welding defects, microstructure, steel 20GL, microtension, mechanical properties, structural
imperfections