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HomeTechEnhanced protection through laser coating technology increases life of thermal power plant...

Enhanced protection through laser coating technology increases life of thermal power plant boilers by 2-3 times

Vijay Mohan

Press Reporter News Service

Chandigarh, October 7

Indian scientists have developed a singular laser-based clad coating know-how (LCCT) that gives improved safety to boiler elements in thermal energy crops. This may improve the lifetime of boiler elements by 2-Three instances as in comparison with presently in use floor coating applied sciences.

It has been discovered that this know-how is appropriate not just for boiler elements of thermal energy crops but additionally for any engineering utility involving excessive temperature erosive and corrosive environments.    

Laser cladding is a way for fusing a coating materials on a substrate. It permits supplies to be deposited precisely, selectively and with minimal warmth enter into the underlying substrate. Such a course of results in property enhancements of the floor of a part, together with higher put on resistance, thus permitting for the restore of broken or worn out surfaces..

In superior supercritical and ultra-supercritical thermal energy crops, varied elements of the boiler and its equipment comparable to feeder nozzle tip, re-heater boiler tube bends and burner spreaders usually degrade because of extreme put on and corrosion at excessive temperature, requiring frequent substitute throughout breakdown or upkeep schedules.

Shutdown because of such issues severely impacts energy manufacturing. Failure of parts throughout the working interval of the plant makes the upkeep job difficult and cumbersome because of the prevailing excessive temperature and dirt enveloped circumstances and leads to an enormous loss in manufacturing in coal-fired energy technology crops.

To beat this problem, scientists from the Worldwide Superior Analysis Centre for Powder Metallurgy and New Supplies (ARCI), an autonomous institute of the Division of Science and Expertise, got here up with the LCCT, for which an Indian patent has additionally been granted, in line with a press release issued by the Ministry of Science and Expertise, at present.

The LCCT is a meticulous fusing of a nickel-based tender matrix with onerous metallic carbide particles of tungsten, chromium, or vanadium that’s coated on metal elements by using a high-power laser.    

The patented LCCT has been efficiently examined for feeder nozzle ideas of boilers for 200 and 500 megawatt crops belonging to the Nationwide Thermal Energy Company. Subject outcomes have indicated 2-Three fold life enhancement of LCCT pushed boiler elements in comparison with different surfacing applied sciences. 


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