• Title/Summary/Keyword: Heat shock

Search Result 1,038, Processing Time 0.028 seconds

Dissimilar Friction Welded for Shock Absorber Steels and Its Evaluation by AE (자동차 쇽업소바용 강재의 이종 마찰용접과 AE평가)

  • Lee, Bae-Sub;Kong, Yu-Sik;Kim, Seon-Jin;Oh, Sae-Kyoo
    • Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
    • /
    • 2003.10a
    • /
    • pp.133-137
    • /
    • 2003

  • The shock absorber for vehicles is the important component to absorb the shock in driving. These essential components, piton and piston rod, must be made of S25C, S45C and SCM440 generally depending on kind of vehicles, precisely machined and assembled by the bolt. And it has been difficult to weld this sort of dissimilar materials. They could be unstable in the quality by the conventional arc welding. And also they have a lot of technical problems in manufacturing. But by the friction welding technique, it will be able to be made without such problems. These factors above necessitate nowadays the domestic development of the shock absorber by friction welding and a new approach of study on real-time quality evaluation by AE techniques.

  • PDF

Dissimilar Friction Welding for Marine Shock Absorber Steels and its Evaluation by Acoustic Emission (해양차량 쇽업소버용 강재의 이종 마찰용접과 AE평가)

  • LEE BAE-SUB;KONG YU-SIK;KIM SEON-JIN
    • Journal of Ocean Engineering and Technology
    • /
    • v.19 no.1 s.62
    • /
    • pp.44-48
    • /
    • 2005

  • The shock absorbers for marine vehicles are very important components to absorbing the shock resulting from driving. Depending on the kinds of vehicles, these essential components, piston and piston rod, must be made of S25C, S45C, and SCM440, must be precisely machined, and assembled by the bolts. Other materials used have been difficult to weld, and could be unstable in quality, by the conventional arc welding. Also, they have been associated with a lot of technical problems in manufacturing. However, using the friction welding technique, such problems will be avoided. These factors have necessitated the domestic development of the marine shock absorber using a friction welding, as well as stimulating a new approach to the study of real-time weld quality evaluation by AE techniques.

  • PDF KSCI