Comparative Study on the Performance of Gel Grease for High-End Equipment Based on the Synergistic Effect of Friction-Reducing Agents
Abstract
:1. Introduction
2. Results and Discussion
2.1. Tribological Performance Test
2.1.1. Tribological Properties of Schaeffler Load 460
2.1.2. Effect of PV611 on Tribological Properties of Greases
2.1.3. Effect of RFM3000 on Tribologs of Greases
2.1.4. Effect of Mixing PV611 with RFM3000 (3:1) on the Tribological Properties of Greases
2.1.5. Effect of Mixing PV611 with RFM3000 (1:1) on the Tribological Properties of Greases
2.1.6. Effect of Mixing PV611 with RFM3000 (1:3) on the Tribological Properties of Greases
2.1.7. Comparative Analysis of Tribological Experiments
2.2. Rheological Property Test
2.2.1. Comparative Analysis of Shear Stress
2.2.2. Comparative Viscosity Analysis
3. Conclusions
3.1. Conclusions
- (1)
- The average coefficient of friction of the experimental grease Schaeffler Load 460 was 0.11; with the addition of PV611, the coefficient of friction was reduced to 0.061; with the further addition of RFM3000, the coefficient of friction was further reduced to 0.045. The coefficients of friction for the different mixing ratios are shown as follows: the experimental grease with the addition of PV611 mixed with RFM3000 (3:1) was 0.047; the experimental grease with the (1:1) mixture was 0.044; and the experimental grease with the (1:3) mixture was the lowest at 0.032. These results show that the experimental grease using PV611 mixed with RFM3000 (1:3) significantly reduces the coefficient of friction in all test conditions.
- (2)
- In friction wear experiments, it was observed that the average wear spot diameter of the experimental grease for Schaeffler Load 460 was 0.673; with the addition of PV611, the wear spot diameter was reduced to 0.473; and with the further addition of RFM3000, the wear spot diameter was reduced to 0.516. The experimental results at different mixing ratios showed that the diameter of the abraded spot of the experimental grease with the addition of PV611 mixed with RFM3000 according to (3:1) was 0.373; the diameter of the abraded spot mixed according to (1:1) was 0.3; and the diameter of the abraded spot mixed according to (1:3) was the smallest, which was 0.266. These results show that the use of experimental grease mixed with PV611 and RFM3000 (1:3) was able to significantly reduce the diameter of the abrasive spots in all test conditions.
- (3)
- In the process of a shear rate increase from 0/s to 100/s, the experimental grease using PV611 mixed with RFM3000 (1:3) shows more obvious viscosity characteristics and greater shear stress, which makes it possible to maintain better viscosity characteristics in a high-temperature environment.
3.2. Future Perspectives
- (1)
- The tribological performance and rheological properties of the grease can be further optimized by continuously adjusting the mixing ratio of PV611 and RFM3000. In particular, it was found that the grease mixed with PV611 and RFM3000 (1:3) had the best performance in terms of reducing the coefficient of friction and the diameter of the wear spots in the experiments, and future studies can explore more precise mixing ratios to obtain superior performance.
- (2)
- The grease mixed with PV611 and RFM3000 (1:3) shows good viscosity characteristics and shear stress at high shear rates and high temperatures, which is especially important for high-end equipment such as bearings and gearboxes at high loads and high speeds. Future research can further verify its stability and durability under different temperature and pressure conditions to ensure its wide application in industrial and high-end equipment.
4. Materials and Methods
4.1. Laboratory Equipment and Materials
4.1.1. MRS-10G Friction and Wear Tester
4.1.2. MCR Rotational Rheometer
4.1.3. Selection of Grease and Additives
4.2. Experimental Program Design
4.2.1. Tribological Experimental Design
4.2.2. Rheological Experimental Design
Test Methods | Test Parameters |
---|---|
Equipment model | MCR Rotational Rheometer |
Shear strain range | 0.1%~100% |
Shear rate range | 0.01 s−1~100 s−1 |
Temp | 80 °C |
Timing | 15 s |
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
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Grease Grades | Base Oil Viscosity | NLGI Consistency Grade | Operating Temperature | Wear Resistance | Antioxidant Properties | Corrosion Resistance |
---|---|---|---|---|---|---|
Schaeffler Load 460 | 400 | 1 | −40 °C~130 °C | High | High | High |
Test Methods | Test Parameters |
---|---|
Equipment model | MRS-10G Lever Type Four-Ball Friction Tester |
Spindle speed | 1200 r/min |
Temp | 80 °C |
Payloads | 392 N |
Timing | 3600 s |
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Share and Cite
Peng, H.; Li, Y.; Shangguan, L.; Chen, Y.; Zhang, N. Comparative Study on the Performance of Gel Grease for High-End Equipment Based on the Synergistic Effect of Friction-Reducing Agents. Gels 2024, 10, 573. https://doi.org/10.3390/gels10090573
Peng H, Li Y, Shangguan L, Chen Y, Zhang N. Comparative Study on the Performance of Gel Grease for High-End Equipment Based on the Synergistic Effect of Friction-Reducing Agents. Gels. 2024; 10(9):573. https://doi.org/10.3390/gels10090573
Chicago/Turabian StylePeng, Han, Yanchi Li, Linjian Shangguan, Yike Chen, and Nannan Zhang. 2024. "Comparative Study on the Performance of Gel Grease for High-End Equipment Based on the Synergistic Effect of Friction-Reducing Agents" Gels 10, no. 9: 573. https://doi.org/10.3390/gels10090573