Q. Write short note on SKV  process of thermit welding?

This term is used for welding by Alumino thermic process with short preheat time. The time required for preheat with petrol and air is only 10 minutes. The principal merit of SKV process is that, time required for preheat is reduced from 30-45 minutes for ordinary thermit welding to only 10 minutes, there by reducing the block time requirements and ensuring a better quality of preheat. The process will employ prefabricated moulds, there by ensuring a better quality of weld collar.