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LASER SURFACE HARDENING
Laser surface hardening is a selective surface hardening process wherein the desired metallurgical and mechanical properties are achieved by a defocused laser beam irradiated over the required area with average power density of 103 - 104 W/cm2 produced to desired case depth. Hardening is effected by transformation, remelting or shock hardening.
Key Features & Advantages
- Moderate to rapid cooling rates resulting in fine homogenous structures
- Selectively localized area processing
- Controlled case depth
- Minimal distortion
- Chemical cleanliness
- Minimal post treatment
- High process flexibility
- Excellent reproducibility
- Ease of processing with CNC programming
- Faster production rates
- No quenchant requirement
Typical Applications
- Steam turbine blades
- Crank shafts
- Cam shafts
- Forming dies
- Cutting tool edges
Ongoing Application R & D Projects
- Crankshaft for a reciprocating compressor
- Piston spacers & rings for IC engines
- Two-wheeler cam shafts
- Crossings for rail roads
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Optimization of laser welding process on Ti-6Al-4V sheets to obtain defect free joints with required mechanical strength. |
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