Hyundai Motor Company

Kia Motors Corporation

Chung-An Lee

Seung-Hyun Hong

Min-Woo Kang

Soon-Woo Kwon

Hyun-ki Kim

Dong-Hwi Kim

Young-Nam Kim

A composition of a copper alloy for a laser cladding valve sheet is disclosed. The copper alloy includes a matrix structure and a hard phase, which includes 12 to 24 wt % of Ni, 2 to 4 wt % of Si, 8 to 30 wt % of Fe, more than 5 wt % and less than 10 wt % of Mo, 2 to 10 wt % of Al, and the balance Cu. The interfacial delamination may be suppressed in a fatigue environment by micronizing the hard phase and the distribution thereof, thereby improving fatigue resistance and wear resistance.

Copper alloy for laser cladding valve sheet

A heat treatment method of a component for a vehicle includes: heating an inner space of a heat treatment furnace in which a component for a vehicle is disposed in the inner space; stabilizing hydrogen (H) by injecting the Hinto the inner space; and performing nitrification heat treatment for the component by injecting only ammonia (NH) into the inner space after the stabilizing. The heat treatment method may adjust the degree of vacuum and the flow rate instead of a Kn without additionally injecting the Hgas into an NHgas, thereby implementing the nitrification heat treatment of a quality similar to that of a conventional nitrification heat treatment for a short time.

Heat treatment method for a vehicle component

Growing community of inventors

Hwaseong-si, South Korea

Chung-An Lee