అవలోకనం
In power plants, degradation of various components like coal nozzle tips, boiler tubes, burner spreaders, etc, due to various modes of wear, erosion and corrosion, is a common problem leading to their replacement during maintenance schedules. Such tribological systems, working in high-temperature, aggressive environments, require suitable surface modification solutions for life enhancement.
A high-temperature erosion corrosion-resistant coating was developed using the laser cladding process. The metal matrix composite coating demonstrated excellent high-temperature erosion resistance compared to the conventional weld overlay process. Field trial in an actual power plant showed negligible wear after 15 months of service. The coating can extend the service life of the boiler components to double compared to the existing life.
Key Features
- Highly controlled process
- Flexibility to adopt the process for different components
- Selective clad coating where needed
- Excellent metallurgical bond between coating and surface
- No post-clad heat treatment required
Potential Applications
- Baffle plates
- Boiler tube
- Burner spreaders etc
స్థితి
- Field trial in an actual power plant showed negligible wear after 15 month of service
Intellectual Property Development Index (IPDI)
Level
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వివరణ
Basic concepts and understanding of underlying scientific principles
Shortlisting possible applications
Research to prove technical feasibility for targeted application
Coupon level testing in simulated conditions
Check repeatability/consistency
Prototype testing in real-life conditions
Check repeatability/consistency
Reassessing feasibility (IP, competition technology, commercial)
Initiate technology transfer
Support in stabilizing production
స్థితి
| Level | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
|---|---|---|---|---|---|---|---|---|---|---|
| వివరణ | Basic concepts and understanding of underlying scientific principles | Shortlisting possible applications | Research to prove technical feasibility for targeted application | Coupon level testing in simulated conditions | Check repeatability/consistency | Prototype testing in real-life conditions | Check repeatability/consistency | Reassessing feasibility (IP, competition technology, commercial) | Initiate technology transfer | Support in stabilizing production |
| స్థితి |
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- “A novel method of pulsed laser cladding for effective control of melting of WC particulates in NiCr-WC composite coatings” Manish Tak, SM Shariff, Vikram Sake, G Padmanabham, Proceedings of 31st International Congress of Laser & Electro optic (ICALEO), p515-523, 2012
- “Characteristics and erosive wear performance of Ni-Cr based coatings on SS-310 steel by diode laser cladding and weldoverlay processes”, Proceedings of the International Conference on Surface Modification Technologies (SMT-23)