| Friction and Wear of Screw-Bushing Pair of Progressive Cavity Pump |
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| DOI： |
| Key Words: progressive cavity pump；liner rubber；wear；friction coefficient |
| Author Name | Affiliation | | DU Xiuhua | Northeast Petroleum University | | HUANG Jinyan | Northeast Petroleum University | | TIAN Mi | Northeast Petroleum University | | QIU Tingting | Northeast Petroleum University |
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| Abstract: |
| The MPX-2000 wear testing machine was modified，and a special fixture was designed.By using metal ring and bushing rubber disc test piece in the oil-water medium and oil-water-sand medium，the wear simulation test of screw-bushing pair was carried out to measure the friction coefficient and wear amount of liner rubber under different normal load and sliding speed.The results showed that，in the oil-water medium and oil-water-sand medium，the friction coefficient of the liner rubber decreased with increase of normal load，and it also increased with increase of sliding speed at first but would decrease with further increase of sliding speed，while the wear amount increased with increase of normal load and decreased with increase of sliding speed.In the oil-water medium，the wear of the liner rubber was mainly dominated by friction mechanism，while in oil-water-sand medium，the wear was caused by the friction mechanism and wet abrasive wear mechanism. |
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