The oil film properties of hydraulic pump slipper pairs in coal mining equipment play a vital role in ensuring efficient operation and reducing wear. The following are some key aspects to consider regarding oil film properties: 1. Lubrication: Proper lubrication is critical to forming and maintaining an adequate oil film between the shoe and swash plate surface. The oil film prevents metal-to-metal contact, reduces friction, dissipates heat and prevents wear. Analyze the lubrication system, including the type of lubricant, oil viscosity, oil delivery mechanism, etc., to ensure sufficient lubrication for the slipper pair. 2. Oil film thickness: Evaluate the oil film thickness between the shoe and swash plate surface. The thickness of the oil film directly affects the load-carrying capacity and friction and wear characteristics of the slippers. Analyze operating conditions, including pressure, speed and load, to determine the oil film thickness required for optimum performance. 3. Hydrodynamic lubrication: The hydraulic pump slipper pair usually operates under hydrodynamic lubrication conditions. In this case, the rotational motion of the swash plate creates hydrodynamic pressure that lifts and separates the shoe from the swash plate, creating an oil film. Analyze hydrodynamic lubrication theory, including the Sommerfeld number and the Reynolds equation, to understand oil film formation and pressure distribution. 90-R-100-KA-1-NN-80-R-3-S1-F-00-GBA-42-42-24 90R100KA1NN80R3S1F00GBA424224 90-R-100-KA-1-NN-80-R-3-S1-E-03-EBC-35-35-24 90R100KA1NN80R3S1E03EBC353524 90-R-100-KA-1-NN-80-R-3-S1-E-00-GBA-42-42-24 90R100KA1NN80R3S1E00GBA424224 90-R-100-KA-1-NN-80-R-3-C7-E-03-GBA-35-35-28 90R100KA1NN80R3C7E03GBA353528 90R100-KA-1-NN-80-R-3-C7-E-03-GBA-35-35-28 90R100KA1NN80R3C7E03GBA353528 90-R-100-KA-1-NN-80-P-4-S1-F-03-GBA-42-42-24 90R100KA1NN80P4S1F03GBA424224 90-R-100-KA-1-NN-80-P-4-S1-E-03-GBA-35-35-24 90R100KA1NN80P4S1E03GBA353524 90-R-100-KA-1-NN-80-P-4-S1-E-03-GBA-23-23-20 90R100KA1NN80P4S1E03GBA232320 90-R-100-KA-1-NN-80-P-4-F1-E-03-GBA-35-35-24 90R100KA1NN80P4F1E03GBA353524 90-R-100-KA-1-NN-80-P-4-C7-F-03-GBA-42-42-24 90R100KA1NN80P4C7F03GBA424224 90-R-100-KA-1-NN-80-P-4-C7-D-03-GBA-32-32-24 90R100KA1NN80P4C7D03GBA323224 90-R-100-KA-1-NN-80-P-3-S1-F-00-GBA-42-42-24 90R100KA1NN80P3S1F00GBA424224 90-R-100-KA-1-NN-80-P-3-S1-E-03-GBA-35-35-24 90R100KA1NN80P3S1E03GBA353524 90R100-KA-1-NN-80-P-3-S1-E-03-GBA-35-35-24 90R100KA1NN80P3S1E03GBA353524 90-R-100-KA-1-NN-80-P-3-S1-E-03-GBA-20-20-24 90R100KA1NN80P3S1E03GBA202024 90-R-100-KA-1-NN-80-P-3-F1-E-02-GBA-32-32-26 90R100KA1NN80P3F1E02GBA323226 90-R-100-KA-1-NN-80-P-3-C7-E-06-GBA-35-35-24 90R100KA1NN80P3C7E06GBA353524 90R100-KA-1-NN-80-P-3-C7-E-06-GBA-35-35-24 90R100KA1NN80P3C7E06GBA353524 90-R-100-KA-1-NN-80-L-4-F1-F-03-GBA-23-23-20 90R100KA1NN80L4F1F03GBA232320 90-R-100-KA-1-NN-80-L-4-F1-F-03-GBA-20-20-24 90R100KA1NN80L4F1F03GBA202024 4. Boundary lubrication: Under certain operating conditions, such as during start-up or low-speed operation, the shoe pair may experience boundary lubrication. In this case, the oil film thickness is minimal and metal-to-metal contact may occur. Evaluate boundary lubrication characteristics and consider additives or surface treatments to improve boundary lubrication and reduce wear. 5. Surface roughness: Analyze the surface roughness of the shoe and swash plate to evaluate its influence on the oil film characteristics. Surface roughness affects oil film formation, friction and wear. Evaluate the surface finish of the part and consider polishing or surface treatment to reduce roughness and improve oil film performance. 6. Oil pollution: Contaminants in hydraulic oil, such as particles, water or air bubbles, can damage the oil film and cause increased wear and reduced performance. Analyze oil filtration systems and maintenance practices to ensure proper filtration and minimize oil contamination. Consider using oil condition monitoring technology to detect and resolve oil contamination issues. 7. Oil film stability: evaluate the stability of the oil film under different operating conditions. Changes in speed, pressure or load can affect film thickness and stability. Analyze the effect of operating parameters on oil film performance and consider stability enhancement measures such as optimizing swash plate design, controlling oil temperature or using additives to improve oil film stability. 90-R-100-KA-1-NN-80-L-4-F1-F-03-GBA-20-20-20 90R100KA1NN80L4F1F03GBA202020 90-R-100-KA-1-NN-80-L-3-F1-F-03-GBA-32-32-24 90R100KA1NN80L3F1F03GBA323224 90-R-100-KA-1-NN-80-L-3-F1-E-03-GBA-35-35-24 90R100KA1NN80L3F1E03GBA353524 90-R-100-KA-1-NN-80-L-3-F1-D-03-GBA-20-20-24 90R100KA1NN80L3F1D03GBA202024 90-R-100-KA-1-NN-80-L-3-C7-E-03-GBA-42-42-24 90R100KA1NN80L3C7E03GBA424224 90-R-100-KA-1-NN-61-S-3-F1-F-03-GBA-14-35-20 90R100KA1NN61S3F1F03GBA143520 90-R-100-KA-1-NN-61-L-4-S1-E-03-GBA-35-35-24 90R100KA1NN61L4S1E03GBA353524 90-R-100-KA-1-NN-60-S-4-S1-F-03-GBA-42-42-24 90R100KA1NN60S4S1F03GBA424224 90-R-100-KA-1-NN-60-S-4-S1-E-00-GBA-14-14-24 90R100KA1NN60S4S1E00GBA141424 90-R-100-KA-1-NN-60-S-4-F1-F-05-GBA-35-35-24 90R100KA1NN60S4F1F05GBA353524 90-R-100-KA-1-NN-60-S-4-F1-F-03-GBA-23-23-24 90R100KA1NN60S4F1F03GBA232324 90-R-100-KA-1-NN-60-S-4-F1-F-03-GBA-14-35-20 90R100KA1NN60S4F1F03GBA143520 90-R-100-KA-1-NN-60-S-4-F1-E-03-GBA-35-35-24 90R100KA1NN60S4F1E03GBA353524 90-R-100-KA-1-NN-60-S-3-T2-F-03-FAC-42-42-24 90R100KA1NN60S3T2F03FAC424224 90R100-KA-1-NN-60-S-3-T2-F-03-FAC-42-42-24 90R100KA1NN60S3T2F03FAC424224 90-R-100-KA-1-NN-60-S-3-T2-E-03-FAC-42-42-26 90R100KA1NN60S3T2E03FAC424226 90R100-KA-1-NN-60-S-3-T2-E-03-FAC-42-42-26 90R100KA1NN60S3T2E03FAC424226 90-R-100-KA-1-NN-60-S-3-T2-E-00-GBA-23-23-24 90R100KA1NN60S3T2E00GBA232324 90-R-100-KA-1-NN-60-S-3-S1-F-00-GBA-35-35-24 90R100KA1NN60S3S1F00GBA353524 90-R-100-KA-1-NN-60-S-3-S1-E-03-GBA-42-42-24 90R100KA1NN60S3S1E03GBA424224 8. Heat dissipation: The hydraulic pump will generate heat during operation, which will affect the characteristics of the oil film. Analyze heat dissipation mechanisms such as heat sinks or oil circulation to ensure proper temperature control. Excessive heat can lead to oil degradation, viscosity changes and reduced oil film thickness, which can affect the overall performance and lifespan of the slippers. 9. Material Selection: Evaluate the material compatibility of the shoe and swash plate surfaces with the hydraulic fluid. Incompatible materials can cause excessive wear, oil degradation or chemical reactions. Analyze material properties such as hardness, wear and corrosion resistance to ensure correct material selection and compatibility for specific operating conditions. 10. Monitoring and Maintenance: Implement a monitoring and maintenance program to regularly assess oil film properties and resolve any issues. Perform periodic inspections, oil analysis and wear measurements to evaluate the performance of your slipper pair. Maintain proper oil level, cleanliness and viscosity to ensure optimum oil film properties. 11. Film formation analysis: analyze the oil film formation process between the sliding shoe and the swash plate surface in detail. Numerical simulations such as Computational Fluid Dynamics (CFD) are used to simulate oil flow and analyze oil film formation. This analysis provides insight into pressure distribution, oil film thickness and flow patterns, helping to optimize slipper pair design. 12. Thermoelastic hydrodynamic analysis: consider the thermoelastic hydrodynamic behavior of oil film. This involves analyzing the interaction between temperature, deformation and lubrication. The operating conditions of coal mining equipment result in high pressures and temperatures that affect the properties of the oil film. Perform thermal and elastohydrodynamic analyzes to understand oil film behavior under different operating conditions. 13. Surface coatings and treatments: Explore the use of surface coatings or treatments to enhance oil film properties. Options such as diamond-like carbon (DLC) coatings, micro-texturing or surface modification can improve the performance of slippers by reducing friction, enhancing oil retention and increasing wear resistance. Evaluate the effectiveness of different coating materials and treatments through experimental testing and analysis. 90-R-100-KA-1-NN-60-S-3-S1-E-03-GBA-35-35-24 90R100KA1NN60S3S1E03GBA353524 90R100-KA-1-NN-60-S-3-S1-E-03-GBA-35-35-24 90R100KA1NN60S3S1E03GBA353524 90-R-100-KA-1-NN-60-S-3-S1-D-03-GBA-35-35-24 90R100KA1NN60S3S1D03GBA353524 90-R-100-KA-1-NN-60-S-3-F1-F-03-GBA-14-35-20 90R100KA1NN60S3F1F03GBA143520 90-R-100-KA-1-NN-60-S-3-F1-F-00-GBA-42-42-20 90R100KA1NN60S3F1F00GBA424220 90-R-100-KA-1-NN-60-S-3-F1-E-03-GBA-42-42-24 90R100KA1NN60S3F1E03GBA424224 90R100-KA-1-NN-60-S-3-F1-E-03-GBA-42-42-24 90R100KA1NN60S3F1E03GBA424224 90-R-100-KA-1-NN-60-S-3-F1-E-00-GBA-23-23-24 90R100KA1NN60S3F1E00GBA232324 90-R-100-KA-1-NN-60-S-3-C7-F-03-GBA-35-35-20 90R100KA1NN60S3C7F03GBA353520 90-R-100-KA-1-NN-60-S-3-C7-F-00-GBA-38-38-24 90R100KA1NN60S3C7F00GBA383824 90R100-KA-1-NN-60-S-3-C7-F-00-GBA-38-38-24 90R100KA1NN60S3C7F00GBA383824 90-R-100-KA-1-NN-60-S-3-C7-E-03-GBA-42-42-24 90R100KA1NN60S3C7E03GBA424224 90R100-KA-1-NN-60-S-3-C7-E-03-GBA-42-42-24 90R100KA1NN60S3C7E03GBA424224 90-R-100-KA-1-NN-60-S-3-C7-E-03-GBA-32-32-24 90R100KA1NN60S3C7E03GBA323224 90R100-KA-1-NN-60-S-3-C7-E-03-GBA-32-32-24 90R100KA1NN60S3C7E03GBA323224 90-R-100-KA-1-NN-60-S-3-C7-E-03-GBA-26-26-24 90R100KA1NN60S3C7E03GBA262624 90-R-100-KA-1-NN-60-R-4-S1-F-03-GBA-42-42-24 90R100KA1NN60R4S1F03GBA424224 90-R-100-KA-1-NN-60-R-4-S1-F-03-GBA-35-35-24 90R100KA1NN60R4S1F03GBA353524 90-R-100-KA-1-NN-60-R-4-S1-E-03-GBA-35-35-24 90R100KA1NN60R4S1E03GBA353524 90-R-100-KA-1-NN-60-R-4-S1-E-03-GBA-32-32-24 90R100KA1NN60R4S1E03GBA323224 14. Pressure pulsation analysis: analyze the pressure pulsation generated by the hydraulic pump and its influence on the oil film. Pressure fluctuations cause vibrations and affect the stability and performance of the oil film. Consider optimizing the pump design, including port arrangement, valve design or flow control mechanism, to minimize pressure fluctuations and ensure a stable oil film. 15. Oil additives: Evaluate the use of oil additives to enhance oil film properties. Additives such as antiwear agents, viscosity modifiers or antifoams can improve the lubricity, viscosity stability and air release properties of hydraulic fluids. Conduct testing and compatibility analysis to ensure additives will not adversely affect pump components or hydraulic systems. 16. Wear Analysis: A wear analysis is performed to evaluate the condition of the slider and swash plate surfaces. This analysis can include wear measurement techniques, such as profilometry or microscopy, to quantify wear patterns and assess the effectiveness of lubrication. Regular wear analysis can help identify any unusual wear patterns, diagnose potential problems and optimize maintenance practices. On-site testing and verification: Conduct on-site testing and verification to determine the performance of the hydraulic pump slipper pair under actual operating conditions. Monitor oil film properties, temperature, pressure and wear patterns during actual operation. The field data was compared with the analysis results to verify the accuracy of the model and make necessary adjustments to optimize the slipper pair design. By considering these additional points, it is possible to fully understand the oil film characteristics and optimize the performance and reliability of hydraulic pump slipper pairs for coal mining equipment.