Wyniki wyszukiwania - BazTech

1

Investigation of possibility of local laser strengthening of railway wheels

Gubenko S., Proidak Y., Shramko A.

Transport Problems

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2012

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T. 7, z. 1

129-134

EN

It was shown possibility and necessity of local laser strengthening of cove zone of railway wheels tread by coming out of bainite structure.

2

Non-uniformity of deformation as an important factor of ovality formation in the billets for railway wheels at free upsetting with figured dies

Dyja H., Danchenko V., Shramko A., Chukhlib A., Ashkelianets A.

Hutnik, Wiadomości Hutnicze

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2011

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Vol. 78, nr 5

365--369

EN

The paper presents research results of non-uniformity of deformation as important factor of ovality formation in the billets for railway wheels at free upsetting with figured dies. For the numerical modeling of the upsetting process the FORGE computer software, which based on finite element method was used. The physical modelling of the process of free upsetting was carried out on the lead samples, on the universal testing machine GMS-50.

PL

W pracy przedstawiono wyniki badań nierównomierności odkształcenia jako ważnego czynnika kształtowania owalności w kęsach na koła kolejowe, podczas kucia swobodnego w kowadłach kształtowych. Do numerycznego modelowania procesu kucia zastosowano komputerowy program FORGE, bazujący na metodzie elementów skończonych. Modelowanie fizyczne kucia swobodnego zostało przeprowadzone na próbkach z ołowiu, na uniwersalnej maszynie testującej GMS-50.

3

Some peculiarities of corrosion of wheel steel

Gubenko S., Pinchuk S., Proidak Y., Belaja E., Kozlowsky A., Shramko A.

Transport Problems

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2009

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T. 4, z. 3, cz.2

5-14

EN

Corrosion mechanism and rate of different chemical composition and structural condition of wheel steel were investigated. It was shown that “white layers”, variation in grain size and banding of wheel steel structure results in corrosion rate. Microstructure of steel from different elements of railway wheels after operation with corrosion was investigated. Wheel steel with addition of vanadium corroded more quickly than steel without vanadium. Non-metallic inclusions are the centre of corrosion nucleation and their influence on corrosion depends on type of inclusion. Mechanism of corrosion of wheel steel corrosion was discussed.