Grinding wheels for heavy - haul freight rails
Heavy - haul freight railway: A railway system designed to transport bulk goods like coal and ore, characterized by high axle loads and large - scale freight - haulage.
---Fashan manufactures specialized grinding wheels for heavy - haul freight rails.
The principle of rail - grinding wheels
The grinding wheel cuts away layers of excess metal from the rail surface, much like peeling an apple skin, to remove defects and restore smoothness.
When the grinding wheel rotates at high speed, abrasives create friction by contacting the rail surface. The heat from friction softens the rail's metal, making it easier to cut. This process enhances grinding efficiency.
The service life of a grinding wheel is the period from its first use until it can no longer be used. It mainly depends on the wheel's wear and tear and the grinding workload. High - quality wheels with good abrasion resistance usually have a longer service life. Grinding pressure, speed, and other parameters can also affect the wear rate and thus the service life.
Matching Grinding Vehicles
-Grinding Vehicle Models: Different models have distinct designs and performance parameters, requiring compatible grinding wheels.
- Spindle Speed Range: Wheels must suit the vehicle's speed range for efficient and safe cutting.
- Motor Power: This determines the maximum wheel size and cutting capacity.
- Mounting Method: Ensures secure wheel attachment to prevent loosening during high - speed operation.
Grinding vehicle motor and travel speed equipment
- Motor power: Select wheel size and abrasive type based on motor power to balance cutting ability and durability.
- Grinding head speed adjustment range: Wheel design must meet cutting needs at different speeds to ensure performance.
- Grinding vehicle travel speed range: Wheels need to adapt to different travel speeds for uniform grinding results.
- Acceleration and deceleration control performance: Wheels must withstand dynamic loads during the grinding vehicle's acceleration and deceleration.
Grinding environmental conditions
-Temperature range: The wheel's material must suit extreme temperatures to avoid thermal cracking and performance drops.
-Humidity: In damp conditions, the wheel needs anti - moisture properties to prevent abrasive dulling.
-Dust: In high - dust environments, the wheel requires good self - cleaning and wear resistance.
-Moistureproof and anti - humidity requirements: The wheel should resist water absorption to extend service life.
Grinding objectives
- Disease - targeted grinding: For severe defects like abrasions and spalling, wheels need high - strength cutting.
- Preventive grinding: Wheels should focus on fine cutting to eliminate minor defects.
- Grinding depth: Determine cutting depth and abrasive grain size based on objectives.
- Grinding frequency: For high - frequency grinding, choose wheels with high durability and uniform wear.