About one method of decreasing the spalling wear in friction pairs, working at low climatic temperatures

Автор: Lebedev M.P., Semyonov Ya.S., Portnyagin S.P., Savinova A.V.

Журнал: Известия Самарского научного центра Российской академии наук @izvestiya-ssc

Рубрика: Машиностроение

Статья в выпуске: 1-2 т.12, 2010 года.

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The coverings, put by standard technology of details recovery, based on flame spraying, are usually sub-ject to wear by a spalling on two principal causes: because of low quality of substrate surfacing; because of high friability of applied covering. Especially it is manifested at low temperatures. We offer the tech-nology, eliminating the above-named deficiencies. The laser flashing off increases the clutch of covering with substrate, reducing value of purity of processing the substrate and, at the same time, alloying the transition layer mixing, and eliminates wear for the first reason. Used powdered materials Ni-Сr-В-Si, Fe-С-Сr-V, corrosion-proof steel Х18Н9Т contain Ni, Cr, V which downgrade critical temperature of visco-fragile хрупкого transferring and should reduce fragile spalling wear for the second reason. The gained results show, that the applied technology of puting the covering and researched powdered materials call decrease of wear at tests for friction under the circuit diagram «a disk on a disk» with slip-page and loading at temperature of ambient air (−15С). Thus it is not observed spalling from the sub-strate and fragile wear by a spalling.

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Friction pairs, spalling wear, powdered materials, technology of laser flashing off, lowed temperatures

Короткий адрес: https://sciup.org/148198956

IDR: 148198956

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