| Autor: |
Roik, T. A., Dorfman, I. Ie. |
| Předmět: |
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| Zdroj: |
Naukovi visti NTUU - KPI; 2012, Vol. 82 Issue 2, p133-136, 4p |
| Abstrakt: |
The bushing bearings based on wastes of AK12MMΓH alloy are produced by powder metallurgy method. We analyze friction films formed on the surface of investigated bushing bearings samples based on wastes of AK12MMΓH alloy in the pair with counterface of steel 45 (45-48 HRCe) obtained as a result of tests on friction and wear. We utilize AVMT-1 friction machine to analyze tribotechnical properties of wear-resistant parts based on wastes of AK12MMΓH alloy. We demonstrate that this brand new material based on wastes of AK12MMΓH alloy has better antifriction properties than the cast material. By using scanning microscopy, we obtain the chemical composition of spectra with arbitrary areas of surface friction. Noteworthy is the fact that results of scanning microscopy correlate with investigated tribotechnical characteristics of wear-resistant parts. We reveal the most efficient operation modes of AK12MMΓH material, namely the sliding speed -- 1 m/sec; specific load on the friction pair -- 5,3 MPa in the air at temperatures up to 120 °C, at which high and stable levels of functional properties of new wear-resistant parts of printing machinery can be achieved. [ABSTRACT FROM AUTHOR] |
| Databáze: |
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