Automatic Laser Cladding of Mining Picks

As the rapid economic growth in China, the demand of coal is more than ever, as well as the coal seam mining get thickening. The hardness of stone layer is increased, the cutting power of shearer and road header also increases accordingly. And the consumption of mine pick is also increasing gradually.

The cutter bit aka mining pick as one of the vulnerable parts in the shearer and road header, which is the main tool of falling coal and crushing coal, the performance impacts the product capacity, power consumption, work stability and the service of other parts. A bunch of stresses are bared by cutter bit, such as compress, shear stress, shock load ans so on. Some injures would come out, such as the head of the cuter fall off, crushing, body battering, breaking. It is most significance of concerns of repairing for manufacturer.

It would improve the capacity of cutter bit greatly via laser cladding and low the cost. Compared with other cladding method, in the micro structure aspect, the advantages of Cladding layer as follow,  

Uniform and compact

Fewer defects

High metallurgy bond with substrate

Low dilution rate

Lesser heat-affected zones

Accurate control of quality

Both of the heated substrate of cutter bit and melt coating powder flowing to injures area would happen at the same time that they are bonded by metallurgy and the cladding coating is formed new surface on the substrate and it is much denser compared with the way by other.

These three sets of integrated automatic systems by the laser power supply Raycus 3000W, the speed rate 300mm/min, powder feeding rate : 18g/min, the powder would be cladding on the cone surface to form the layer thickness 3mm. The laser power supply, tooling and control panel. Three sets of equipment are charged by only one stuff that reduces greatly the labor intensity of workers.