INFLUENCE OF THE QUENCHING TECHNOLOGIES ON THE JOINT BAR MICROSTRUCTURE
https://doi.org/10.17073/0368-0797-2015-9-682-687
Abstract
Joint bar (fishplate) is an asymmetrical cross-section product with different mass elements – the web, the upper and lower bulbous heads. Technical standards specify the strict requirements on the joint bar mechanical properties and straightness. The microstructure after rolling (without heat treatment), after thermostrengthening according to the traditional technology – oil quenching, and accelerated water cooling technology has been studied by using optical and scanning electron microscope. The accelerated water cooling technology was the first implemented in industry for asymmetrical cross-section body. As a result, it was found that a high degree dispersion of the phases and the small grain size provided the best results in stable mechanical properties, which is typical for the sprayer system. The joint bar straightness is achieved in response to the cooling process controllability.
About the Authors
M. V. Zakharchenko
Ural Federal University named after the first President of Russia B.N. Yeltsin
Russian Federation
Russian Federation
Postgraduate of the Chair “Metal Science and Heat Treatment”,
19, Mira str., Ekaterinburg, 620002
A. Yu. Zhilyakov
Ural Federal University named after the first President of Russia B.N. Yeltsin
Russian Federation
Russian Federation
Senior Engineer of the Chair of Physics and Heat Treatment of Metals,
19, Mira str., Ekaterinburg, 620002
Yu. I. Lipunov
OJSC Research Institute of Metallurgical Heat Engineering (VNIIMT)
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Director of the Center of Modern Cooling Systems and Thermohardening Metals Technologies,
16, Studencheskaya str., Ekaterinburg, 620137
K. Yu. Eismondt
OJSC Research Institute of Metallurgical Heat Engineering (VNIIMT)
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Deputy Director of the Center of Modern Cooling Systems and Thermohardening Metals Technologies,
16, Studencheskaya str., Ekaterinburg, 620137
Yu. G. Yaroshenko
Ural Federal University named after the first President of Russia B.N. Yeltsin
Russian Federation
Russian Federation
Dr. Sci. (Eng.), Professor of the Chair “Metal Science and Heat Treatment”,
19, Mira str., Ekaterinburg, 620002
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Review
For citations:
Zakharchenko M.V., Zhilyakov A.Yu., Lipunov Yu.I., Eismondt K.Yu., Yaroshenko Yu.G. INFLUENCE OF THE QUENCHING TECHNOLOGIES ON THE JOINT BAR MICROSTRUCTURE. Izvestiya. Ferrous Metallurgy. 2015;58(9):682-687. (In Russ.) https://doi.org/10.17073/0368-0797-2015-9-682-687
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