Introduction: The Importance of Hydraulic Hoses in Industrial Systems
Hydraulic hoses are critical components in hydraulic systems, widely used in construction machinery, industrial equipment, mining machinery, and more. They are responsible for safely and efficiently transporting high-pressure fluids to actuators, enabling power transmission and control. The performance of hydraulic hoses directly affects the safety and efficiency of the system, making it essential to understand their performance standards and proper maintenance methods.
Performance Standards of Hydraulic Hoses
1. Working Pressure Rating
Hydraulic hoses must meet the maximum working pressure requirements of the system. They are generally classified as low, medium, or high-pressure hoses, with high-pressure hoses typically rated from 10 MPa to 40 MPa or higher. Hoses undergo static pressure and burst testing to ensure no leaks or ruptures under pressure.
2. Construction
Hydraulic hoses typically consist of an inner tube, reinforcement layer, and outer cover:
- Inner Tube: Resistant to hydraulic fluid corrosion, ensuring fluid purity and system cleanliness.
- Reinforcement Layer: Provides pressure resistance and tensile strength, usually made of braided or spiral steel wire.
- Outer Cover: Protects the hose from environmental factors, mechanical abrasion, and corrosion.
3. Temperature Range
Hydraulic hoses must maintain stable performance within the operating temperature range. Common hoses operate between -40°C and +100°C, while special materials can withstand higher or lower temperatures.
4. Bend Radius
The minimum bend radius is a critical design and installation parameter that prevents damage such as reinforcement layer breakage or cracking of the hose.
5. Material Compatibility
Selecting a hose requires ensuring that the inner tube material is compatible with the hydraulic fluid to avoid swelling, hardening, or cracking, thereby extending service life.
Daily Maintenance Guide
1. Regular Inspection
- Check for cracks, bulges, abrasion, or leaks on the hose surface.
- Inspect fittings for looseness or corrosion.
2. Avoid Over-Bending and Stretching
- Follow manufacturer’s recommended minimum bend radius to prevent forced bending.
- Ensure hoses are installed without tension to avoid stress from stretching.
3. Keep Clean
- Regularly clean the hose surface to prevent dirt, oil, and debris buildup that can degrade the hose.
- Prevent foreign materials from entering the hose to avoid system contamination.
4. Timely Replacement
- Replace hoses immediately if signs of aging, cracks, or leaks appear.
- Establish replacement intervals based on operating hours and environmental conditions.
5. Proper Storage
- Store hoses away from direct sunlight, high temperatures, and moisture.
- Avoid heavy pressure or sharp objects that could damage the hose surface.
