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자동차 브레이크 부품용 S45C 소재의 레이저 용접특성 평가
심기중(Kijoong Sim),조원용(Wonyoung Cho),김용관(Youngkwan Kim),최규재(Kyujae Choi) 한국자동차공학회 2014 한국 자동차공학회논문집 Vol.22 No.1
This paper represents the s-cam manufacturing process with the high-carbon steel like S45C using laser welding system. Laser welding of the high-carbon steel is generally difficult because of hardening of the weld zone. Also, existing s-cam manufacturing process, electric resistance welding system, have some problems like increase of production and development cost. To solve those problems, we are introduced the laser welding system with the pre-heating system for precision welding of s-cam with separated shaft and cam part. S-cam manufactured with optimum laser welding conditions is verified the performance like tensile strength, torsional strength and fatigue test. Strength and fatigue test results are described.