TECHNICAL CONDITION OF HIGH-STRENGTH CAST IRON CRANKSHAFTS FROM AND MATERIAL SELECTION FOR THEIR RESTORATION
The paper presents data on a technical condition of cast iron crankshafts to be repaired which is characterized by wear of crankshaft necks and connecting rod journals and misalignment of crankshaft necks of ZMZ-53-engines. Wear and misalignment of crankshaft necks are closely described by the the...
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| Main Author: | |
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| Format: | Article |
| Language: | Russian |
| Published: |
Belarusian National Technical University
2013-04-01
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| Series: | Наука и техника |
| Online Access: | https://sat.bntu.by/jour/article/view/107 |
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| Summary: | The paper presents data on a technical condition of cast iron crankshafts to be repaired which is characterized by wear of crankshaft necks and connecting rod journals and misalignment of crankshaft necks of ZMZ-53-engines. Wear and misalignment of crankshaft necks are closely described by the the Weibull's law and 70–75 % of the shafts to be repaired require recovery with deposition of coating. In order to recover crankshaft necks it is proposed to apply plasma spraying with a mixture of powders which includes copper powder. Coating obtained in accordance with the proposed technology is characterized by wear intensity during its normal operation 4,0 · 10–6 g/m, and it is by 3–5 % lower than the wear intensity rate of those shafts that have been recovered with the help of spraying powder mixtures without copper. |
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| ISSN: | 2227-1031 2414-0392 |