Shock absorber base assembly is one of the parts in shock absorber equipment which control the vehicle movement and absorb the shock and vibration to realize the stability and the comfort for the riding. This part demand hardness, reliance and rigorous density of the welded section because it is a resist pressure container which needs durability by being filled with gas and oil. However, the present engineering needs much time, high cost and shows low production rate due to the eight processes which are spot welding, reinforcement welding(MAG), prior process of base cap and tube for the precision and pressing etc. In this study we will analyze the problem of the processes for the base assembly and suggest an engineering to improve the problem innovatively using frictional welding. As the result of experiment by frictional welding using frictional heat, its hardness for the joining section became high and its precision showed excellence. Therefore we can expect the curtailment for the welding processes, the reduction of cost and excellent joining function.

Abstract
 1. 서 론
 2. 마찰용접의 특징
 3. 기존 베이스 어셈블리 접합기술 분석
 4. 마찰용접을 이용한 베이스 어셈블리 개발
  4.1 마찰용접 적용에 따른 신공정 개발
  4.2 마찰용접 제어인자 정립
  4.3 실험 결과
 5. 결 론
 참고문헌

• 정호연(전주대학교 생산디자인공학과 교수)
• 신동주(전주대학교 대학원 산업공학과 박사과정)
• 이형호(태산ENG 부장)