Elimination of causes of crack formation in the slider of a powerful crank forming press

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It is known that during long-term operation of crank machines for cold sheet stamping, which consists in cyclic loading of the structure with mechanical stresses, fatigue degradation of the metal occurs, leading to the occurrence and growth of cracks. Nevertheless, the main trend of modern Russian approaches to modernizing the park of forging and pressing machines is the desire to preserve large metal-consuming parts of stamping presses when replacing the control system and hydraulic and/or pneumatic components of additional actuators. Practice has shown that such approach is economically and technologically justified. For countries that do not have the capacity to manufacture stamping machines of their own brands, there is a need to purchase equipment abroad (including Russia), usually for economic reasons in the secondary market after a long period of operation. In this case, competent pre-sale preparation is required in order to avoid emergencies and equipment failures after its installation at the purchasing enterprise. Ensuring the durability of crank stamping machines after a period of long-term operation is an urgent task, both for the industry of developing countries and for the Russian one. Using the example of a powerful crank stamping press, during the pre-sale preparation of which cracks in the slider were revealed, a way to eliminate the causes of cracking during its further operation is shown.

About the authors

Anna V. Kornilova

Moscow State University of Civil Engineering (National Research University)

Email: anna44@yandex.ru
ORCID iD: 0000-0001-5569-9320

Doctor of Technical Sciences, Professor of the Department of Testing of Structures

26 Yaroslavskoye Shosse, Moscow, 129337, Russian Federation

Kyaw Zaya

Moscow State Technological University “STANKIN”

Author for correspondence.
Email: k.kyawzaya@yandex.ru
ORCID iD: 0000-0003-0131-1399

postgraduate, Department of Composite Materials

1 Vadkovskii Pereulok, Moscow, 127055, Russian Federation


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Copyright (c) 2022 Kornilova A.V., Zaya K.

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