EXHAUST VALVE STEM FOR INTERNAL COMBUSTION ENGINE AND METHOD FOR MANUFACTURING SAME

摘要

A method for integrally joining a high-temperature corrosion-resistant metal layer on a touch surface of an exhaust valve rod of an internal combustion engine in a simple and short time, and an exhaust valve rod obtained by the method. An exhaust valve stem for an internal combustion engine comprising a heat resistant steel as a base material, wherein a plate of a first internal high temperature corrosion resistant alloy containing Ni and Cr is pressed on a tentacle surface including the base material of the exhaust valve rod, , And a second internal high temperature corrosion-resistant alloy including Ni and Cr is welded at the center of the corresponding touch screen, and the method for manufacturing the corresponding exhaust valve rod by explosion bonding.