Manufacture of piston ring

Abstract

Abstract PURPOSE:To improve wear proof property of piston rings by manufacturing piston rings in such way that piston ring materials having a surrounding groove on the outer peripheral surface is fitted to a rotating shaft and then rotated, and a wear proof powdered material is supplied in the surrounding groove and the powdered material is solidified by irradiating laser beam, and then finish working is performed on them. CONSTITUTION:Surrounding groove 3 is formed for the total periphery on outer peripheral surface 2 of piston ring materials having a resembled shape to the outer peripheral shape of piston ring having free conditioned outer periphery. This piston ring material is fitted to rotating shaft 6 by holding it from the direction of thickness and rotated, and then wear proof powder 10, such as Mo powder, mixture of Mo powder and Ni powder, Cr powder, etc., is supplied to surrounding groove 3 through nozzle 8. At the same time, laser beam 11 is irradiated on surrounding groove part 3 and powdered material 10 is heated and melted, and thus a wear proof material is fitted and solidified in surrounding groove 3. After that, working of finish grinding or finish cutting is performed on the piston ring material.

Inventors

• 👤 Kosaku Matsumoto

Bibliographic Details