Reduced Friction and Excellent Anti-Wear Performance of QBe2 Beryllium Bronze against 38CrMoAlA Steel in Pneumatic Downhole Motor under Grease Lubrication
To improve the service life of the newly designed pneumatic downhole motor, a kind of commercially available lithium complex grease was used to help avoid the rapid wear-induced failure of the dynamic seal of pneumatic downhole tools in operation. The investigation on the tribological behaviors of Q...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-01-01
|
| Series: | Metals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4701/13/2/266 |
| _version_ | 1797619313876664320 |
|---|---|
| author | Chenfan Liang Jing Zhou Yu Wang Zhijian Peng |
| author_facet | Chenfan Liang Jing Zhou Yu Wang Zhijian Peng |
| author_sort | Chenfan Liang |
| collection | DOAJ |
| description | To improve the service life of the newly designed pneumatic downhole motor, a kind of commercially available lithium complex grease was used to help avoid the rapid wear-induced failure of the dynamic seal of pneumatic downhole tools in operation. The investigation on the tribological behaviors of QBe2 beryllium bronze and 38CrMoAlA steel tribo-pairs in pneumatic downhole motor revealed that under lubrication, the instantaneous friction coefficient and wear volume became very low, showing greatly reduced friction and excellent anti-wear performance. Compared with the case without lubrication, the adhesive wear mechanism and ploughing effect of the tribo-pairs were significantly alleviated. Moreover, Cu and Fe were oxidized to form composite oxides between the frictional surface, further improving the lubrication effect between the QBe2 beryllium bronze and 38CrMoAlA steel. Notably, the test could be operated stably for more than 150 h under lubrication, fully reaching the requirement of pneumatic downhole tools under actual drilling conditions. These results provide a solid support for the practical application of the reported pneumatic downhole tools. |
| first_indexed | 2024-03-11T08:25:16Z |
| format | Article |
| id | doaj.art-81cc9a6ef53f47a4a1bada4d63a4b48f |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-11T08:25:16Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-81cc9a6ef53f47a4a1bada4d63a4b48f2023-11-16T22:06:58ZengMDPI AGMetals2075-47012023-01-0113226610.3390/met13020266Reduced Friction and Excellent Anti-Wear Performance of QBe2 Beryllium Bronze against 38CrMoAlA Steel in Pneumatic Downhole Motor under Grease LubricationChenfan Liang0Jing Zhou1Yu Wang2Zhijian Peng3Key Laboratory on Deep GeoDrilling Technology of the Ministry of Natural Resources, School of Engineering and Technology, China University of Geosciences, Beijing 100083, ChinaKey Laboratory on Deep GeoDrilling Technology of the Ministry of Natural Resources, School of Engineering and Technology, China University of Geosciences, Beijing 100083, ChinaKey Laboratory on Deep GeoDrilling Technology of the Ministry of Natural Resources, School of Engineering and Technology, China University of Geosciences, Beijing 100083, ChinaSchool of Science, China University of Geosciences, Beijing 100083, ChinaTo improve the service life of the newly designed pneumatic downhole motor, a kind of commercially available lithium complex grease was used to help avoid the rapid wear-induced failure of the dynamic seal of pneumatic downhole tools in operation. The investigation on the tribological behaviors of QBe2 beryllium bronze and 38CrMoAlA steel tribo-pairs in pneumatic downhole motor revealed that under lubrication, the instantaneous friction coefficient and wear volume became very low, showing greatly reduced friction and excellent anti-wear performance. Compared with the case without lubrication, the adhesive wear mechanism and ploughing effect of the tribo-pairs were significantly alleviated. Moreover, Cu and Fe were oxidized to form composite oxides between the frictional surface, further improving the lubrication effect between the QBe2 beryllium bronze and 38CrMoAlA steel. Notably, the test could be operated stably for more than 150 h under lubrication, fully reaching the requirement of pneumatic downhole tools under actual drilling conditions. These results provide a solid support for the practical application of the reported pneumatic downhole tools.https://www.mdpi.com/2075-4701/13/2/266frictionlubricationQBe2 beryllium bronze38CrMoAlA steelwear mechanism |
| spellingShingle | Chenfan Liang Jing Zhou Yu Wang Zhijian Peng Reduced Friction and Excellent Anti-Wear Performance of QBe2 Beryllium Bronze against 38CrMoAlA Steel in Pneumatic Downhole Motor under Grease Lubrication Metals friction lubrication QBe2 beryllium bronze 38CrMoAlA steel wear mechanism |
| title | Reduced Friction and Excellent Anti-Wear Performance of QBe2 Beryllium Bronze against 38CrMoAlA Steel in Pneumatic Downhole Motor under Grease Lubrication |
| title_full | Reduced Friction and Excellent Anti-Wear Performance of QBe2 Beryllium Bronze against 38CrMoAlA Steel in Pneumatic Downhole Motor under Grease Lubrication |
| title_fullStr | Reduced Friction and Excellent Anti-Wear Performance of QBe2 Beryllium Bronze against 38CrMoAlA Steel in Pneumatic Downhole Motor under Grease Lubrication |
| title_full_unstemmed | Reduced Friction and Excellent Anti-Wear Performance of QBe2 Beryllium Bronze against 38CrMoAlA Steel in Pneumatic Downhole Motor under Grease Lubrication |
| title_short | Reduced Friction and Excellent Anti-Wear Performance of QBe2 Beryllium Bronze against 38CrMoAlA Steel in Pneumatic Downhole Motor under Grease Lubrication |
| title_sort | reduced friction and excellent anti wear performance of qbe2 beryllium bronze against 38crmoala steel in pneumatic downhole motor under grease lubrication |
| topic | friction lubrication QBe2 beryllium bronze 38CrMoAlA steel wear mechanism |
| url | https://www.mdpi.com/2075-4701/13/2/266 |
| work_keys_str_mv | AT chenfanliang reducedfrictionandexcellentantiwearperformanceofqbe2berylliumbronzeagainst38crmoalasteelinpneumaticdownholemotorundergreaselubrication AT jingzhou reducedfrictionandexcellentantiwearperformanceofqbe2berylliumbronzeagainst38crmoalasteelinpneumaticdownholemotorundergreaselubrication AT yuwang reducedfrictionandexcellentantiwearperformanceofqbe2berylliumbronzeagainst38crmoalasteelinpneumaticdownholemotorundergreaselubrication AT zhijianpeng reducedfrictionandexcellentantiwearperformanceofqbe2berylliumbronzeagainst38crmoalasteelinpneumaticdownholemotorundergreaselubrication |