Patent ID: 6903302

Claim:
A method for manufacturing valve seats using a laser cladding process, comprising: forming a casting material on which at least one valve seat is to be formed; fabricating a valve seat target position at a location on the casting material where a valve seat is to be formed; removing an oxidation film formed on the valve seat target position by injecting a mixture including two or more elements that react chemically at a predetermined temperature onto the valve seat target position, and irradiating a laser beam onto the mixture to raise the temperature of the mixture to at or above the predetermined temperature needed for chemical reaction; injecting a metal powder mixture onto the valve seat target position wherein the metal powder mixture includes copper (Cu) particles and nickel (Ni) particles mixed at a predetermined ratio by weight; and irradiating a laser beam on the metal powder mixture to clad the metal powder mixture on the valve seat target position.