THEORETICAL BACKGROUND OF THE RESTORING OF THE CRANKSHAFT NECKS BY FERROMAGNETIC MATERIALS WELDING

Abdirashev O.K. Oralbayev S.Zh. Shambulov Y.D. Smailova G.A. Bukayeva A. Yergaliyev D. Tulegulov A. Zhauyt A.
2023 Faculty of Metallurgy

Metalurgija
2023 #62 Issue 1 111 - 114 pp.

When developing the technological process of cast iron crankshaft restoring, it is necessary to obtain a martensitic structure in the pad weld in order to ensure the wear resistance needed. To form the martensitic structure the cooling rate after padding must be at least 80-90⁰С / s. The helical surface welding does not lead to such a result, so in our research we use the welding according to the width of the shaft neck. We also examined the heat release from the pad weld and its cooling rate. For its implementation, the necessary calculations were made according to a compiled program in the QBASIC language. On the basis of these provisions, the theoretic background is proposed for the possibility of the wide-ringed welding of crankshaft necks, which ensures a minimal change in the structure and geometry of the crankshafts.

crankshaft , numerical method , restoring , structure , welding

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Almaty Technological University, Almaty, Kazakhstan
Satbayev University, Almaty, Kazakhstan
Eurasian National University named after L. N. Gumilev, Nur-Sultan, Kazakhstan
Yessenov University, Aktau, Kazakhstan
Almaty University of Power Engineering and Telecommunications, Almaty, Kazakhstan

Almaty Technological University
Satbayev University
Eurasian National University named after L. N. Gumilev
Yessenov University
Almaty University of Power Engineering and Telecommunications

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