Friction and wear behavior of different seal materials under water-lubricated conditions
Abstract The shaft mechanical face seal in a high-speed turbopump of a liquid rocket engine often operates under extremely harsh conditions. For example, a low-temperature and low-viscosity fluid (such as liquid oxygen or liquid hydrogen) is used as a lubricant. The performance of the seal rings, es...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2020-08-01
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| Series: | Friction |
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| Online Access: | https://doi.org/10.1007/s40544-020-0364-5 |
| _version_ | 1818457147936079872 |
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| author | Weigang Zhao Guoyuan Zhang Guangneng Dong |
| author_facet | Weigang Zhao Guoyuan Zhang Guangneng Dong |
| author_sort | Weigang Zhao |
| collection | DOAJ |
| description | Abstract The shaft mechanical face seal in a high-speed turbopump of a liquid rocket engine often operates under extremely harsh conditions. For example, a low-temperature and low-viscosity fluid (such as liquid oxygen or liquid hydrogen) is used as a lubricant. The performance of the seal rings, especially the friction and wear behavior, directly determines whether the seal functions normal. In this study, the friction and wear behavior of several ring materials are tested using a pin-on-disk tribo-tester, and the wear morphology of the ring is investigated. The friction coefficients (COFs) and mass-wear rates under dry-friction and water-lubricated conditions, which are used to simulate low-viscosity conditions, are obtained. The results show that at a pressure-velocity (PV) value of 2.4 MPa·(m/s), the COF between the copper graphite (stator) and copper-chrome alloy disk (rotor) is low (with a value of 0.18) under the dry-friction conditions, and the 5-min wear mass of the copper graphite is approximately 2 mg. Under the water-lubricated conditions, compared with other materials (such as copper-chrome alloy, S07 steel, alumina ceramic coating, and nickel-based calcium fluoride), the S07 steel with a diamond-like carbon film is preferred for use in a high-speed turbopump under extreme conditions. The results of this study can provide theoretical and experimental guidance in the design of mechanical face seals in liquid rocket engines. |
| first_indexed | 2024-12-14T22:37:57Z |
| format | Article |
| id | doaj.art-5823aeb7f1794d33a826e07b1bcaac9f |
| institution | Directory Open Access Journal |
| issn | 2223-7690 2223-7704 |
| language | English |
| last_indexed | 2024-12-14T22:37:57Z |
| publishDate | 2020-08-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Friction |
| spelling | doaj.art-5823aeb7f1794d33a826e07b1bcaac9f2022-12-21T22:45:04ZengSpringerOpenFriction2223-76902223-77042020-08-019469770910.1007/s40544-020-0364-5Friction and wear behavior of different seal materials under water-lubricated conditionsWeigang Zhao0Guoyuan Zhang1Guangneng Dong2School of Astronautics, Northwestern Polytechnical UniversitySchool of Mechano-Electronic Engineering, Xidian UniversityKey Laboratory of Modern Design and Rotor-bearing System of Ministry of Education, Xi’an Jiaotong UniversityAbstract The shaft mechanical face seal in a high-speed turbopump of a liquid rocket engine often operates under extremely harsh conditions. For example, a low-temperature and low-viscosity fluid (such as liquid oxygen or liquid hydrogen) is used as a lubricant. The performance of the seal rings, especially the friction and wear behavior, directly determines whether the seal functions normal. In this study, the friction and wear behavior of several ring materials are tested using a pin-on-disk tribo-tester, and the wear morphology of the ring is investigated. The friction coefficients (COFs) and mass-wear rates under dry-friction and water-lubricated conditions, which are used to simulate low-viscosity conditions, are obtained. The results show that at a pressure-velocity (PV) value of 2.4 MPa·(m/s), the COF between the copper graphite (stator) and copper-chrome alloy disk (rotor) is low (with a value of 0.18) under the dry-friction conditions, and the 5-min wear mass of the copper graphite is approximately 2 mg. Under the water-lubricated conditions, compared with other materials (such as copper-chrome alloy, S07 steel, alumina ceramic coating, and nickel-based calcium fluoride), the S07 steel with a diamond-like carbon film is preferred for use in a high-speed turbopump under extreme conditions. The results of this study can provide theoretical and experimental guidance in the design of mechanical face seals in liquid rocket engines.https://doi.org/10.1007/s40544-020-0364-5frictionwearmechanical face sealwater-lubricatedhigh-speed turbopump |
| spellingShingle | Weigang Zhao Guoyuan Zhang Guangneng Dong Friction and wear behavior of different seal materials under water-lubricated conditions Friction friction wear mechanical face seal water-lubricated high-speed turbopump |
| title | Friction and wear behavior of different seal materials under water-lubricated conditions |
| title_full | Friction and wear behavior of different seal materials under water-lubricated conditions |
| title_fullStr | Friction and wear behavior of different seal materials under water-lubricated conditions |
| title_full_unstemmed | Friction and wear behavior of different seal materials under water-lubricated conditions |
| title_short | Friction and wear behavior of different seal materials under water-lubricated conditions |
| title_sort | friction and wear behavior of different seal materials under water lubricated conditions |
| topic | friction wear mechanical face seal water-lubricated high-speed turbopump |
| url | https://doi.org/10.1007/s40544-020-0364-5 |
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