Wear Protection On Cutting Edge

Plasma Transfer Arc Welding (PTAW) overlay (Ni/WC) on Cutting Edge at Mining Site can much increase productivity. Regarding about cutting Blades/dozer blades products, implement PTAW overlay to strengthen on margin area then get 3 times longer than normal ones. For sugarcane hammers, service life last 4-5 times longer than normal ones.

The properties of Fused Tungsten Carbide are very much dependent on its structure. FTC which demonstrates at least an 80 % [feather" structure has a macro-hardness of approximately 2,000 HV30. The micro-hardness of this material has been measured at 2,300 - 2,500 HV0.1.
FTC has a carbon content of 3.8 - 4.1 %. This corresponds to a ratio of 78 - 80 % W2C and 20 - 22 % WC. Careful attention must be paid during the processing and application of products containing FTC, that the temperature does not exceed 1,800 °C. Higher temperatures would cause an alteration in the structure resulting in a loss of hardness.

High energy density plasma jet, the substrate surface with alloy powder melting at the same time, guarantee the alloy layer is complete metallurgical bonding with substrate and not fall off.

Plasma cladding layer for the uniform thickness of pure metal or metal ceramic layer;

Improve the operating environment, no welding smoke and harmful gases, small labor intensity, high production efficiency.

Under the effect of high temperature plasma jet, the alloy powder and substrate surface rapidly melting and mixing, diffusion, reaction, solidification and cooling, forming a layer and substrate is metallurgical combination of high hardness metal ceramic layer, so as to realize the impact of surface wear and abrasive wear.  

PTAW overlay on teeth/shrouds/adapters/ and many other wear parts on mining, metallurgy, cement, high speed railway, road, power plant and military project etc.

Do plasma coating reinforcement with the help of displacement type plasma cladding machine and composite different alloy powders according to the request of our clients on the severe wear parts which can improve the service life of wear parts actually. With PTAW overlay can improve 1-2 times working life for teeth, 5-10 times for shrouds heel shoes.

The type applications could be Slab shears, hot-forging dies, hot shear blades, drawing dies, crushing equipment and depressions created by forging, pressure and impact stress and so on...