Technology of the multifunctional protective coating production with the superficial alloying in a casting form

The investigations of production of thick chromium-carbide coatings are made on steel 40L and grey cast iron SCH25 with application of alloying pastes on the working surfaces of the casting forms. It is determined that alloying in a casting form of steel 40L and cast-iron SCH25 become effective in the pro-duction of chromium-carbide layers with thickness 120–240 mkm and increase their cavitation resistance by 10–12 and 20–25 times accordingly.