Thermal Spray & Applications
Case Study: Worn out motor rotor’s coupling journal and badly damaged keyway
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| Step 1 : Worn Out Motor Rotor’s Coupling Journal and Badly Damaged Keyway | Step 2 : Conduct Thermal Spray Repair Procedure |
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| Step 3 : Journal with Thermal Spray Coating Before Machining | Step 4 : Precision Machine Finished to Sizes and Tolerances |
The thermal spray process involves in depositing metals in the form of molten spray which solidifies on the surface to form a dense and strongly adherent deposit. The method consists of melting the material to be sprayed and simultaneously projecting the molten particles in a high velocity air jet to the surface.
Although the deposits are applied in a molten state, the base material undergoes only a relatively small rise in temperature. The deposit produced by electric arc spraying possesses a high degree of bond strength and the inter-particle cohesion of the deposit is extremely high. This gives deposits which are highly resistant to chipping, spalling and cracking even when machined by conventional method.
Typical applications where thermal spray gives improved performances characteristics over all areas such as:-
- Reclamation / salvage of worn components
- Anti-corrosion / erosion / wear protection
- Electro-magnetic interference screening
- Protection against high temperature
- High Chrome Steel
- Stainless Steel
- Carbon Steel
- Ceramic (Chrome Oxide, Aluminium Oxide)
- Aluminium Bronze
- Copper
- White Metal (Babbitt)
- Zinc
- Aluminium
- Hastelloy
- Ultrahard Alloy
