Industry Trends

In coal mining, the traction sprocket meshes with the chain on the scraper conveyor to make the coal shearer move along the scraper conveyor, achieving the walking traction of the coal shearer. The teeth of the sprocket are prone to wear. Wear can cause changes in the tooth profile of the gear teeth, increase the meshing clearance, and affect the traction performance of the coal shearer. Meanwhile, under harsh working conditions such as heavy load and impact, the gear teeth of the sprocket may break, etc. A hardened layer with high hardness can be formed on the surface of the sprocket, which can improve the wear resistance and fatigue resistance of the gear teeth, and also enhance the corrosion resistance of the sprocket and extend its service life. Laser cladding technology, as an advanced surface modification technique, has significant applications in fields such as the repair and processing of coal mining machine sprockets. It can precisely control the thickness and shape of the cladding layer, accurately restore the original size and precision of the sprocket, and ensure the fit accuracy between the sprocket and other components.

Restoring dimensional accuracy: During the operation of the sprocket of the coal mining machine, due to wear and other reasons, the dimensional accuracy may decline. Laser cladding technology can precisely deposit a layer of metal material on the worn area, restoring the size of the sprocket to the design requirements and ensuring its good meshing with the chain.

Repairing complex shapes: The teeth of the sprocket of the coal mining machine have complex shapes. Laser cladding technology can precisely carry out local repairs based on the specific shape and wear condition of the sprocket. For some complex-shaped parts that are difficult to handle with traditional repair methods, it can also achieve good repair results.

Powder selection (Choose the appropriate alloy powder based on the working conditions and performance requirements of the chain teeth.)

Commonly used powders include nickel-based, cobalt-based, iron-based and other alloy powders. Elements such as tungsten, chromium and molybdenum can be added to enhance the hardness, wear resistance and corrosion resistance of the cladding layer.

Post-treatment (Heat treatment of the chain teeth after cladding, such as tempering and aging, etc., to eliminate residual stress in the cladding layer and improve the microstructure stability and performance of the cladding layer.) The surface of the chain teeth is precisely processed by mechanical processing methods such as grinding and polishing to ensure that the size and surface roughness of the chain teeth meet the design requirements.

Optimization of laser process parameters

1. Scanning speed

2. Powder feeding volume:

3. Innovative R&D team: Continuously innovate research processes to provide you with high-quality product processing and maintenance solutions

4. Perfect service: 7x24-hour pre-sale and after-sale service

For laser cladding repair of sprockets and teeth of coal mining machines, please contact Guosheng Laser at 19039905582