Welding and Joining

Welding and Joining Technical Publications

21. Laser Welding P/M for Automotive Applications The ability to laser weld automotive components is a determining factor in converting the currently specified wrought or cast materials to powder metallurgy (P/M) parts for various applications. Material selection, process conditions and joint design are known to have a significant influence when fusion welding P/M components. Welding trials were conducted to determine the appropriate laser parameters for several P/M grades at various density levels. Bead-on-plate, overlap and butt joint designs were attempted, primarily without filler metal additions.

20. Fusion Welding P/M Components for Automotive Applications The paper identifies welding methods that are most often used to join P/M automotive components. Various weld procedures associated with the different methods are discussed. Examples are presented along with appropriate process information. A more detailed application development involves Gas Tungsten Arc welding a stainless P/M exhaust bushing to a wrought stainless steel tube.

14. P/M Joining Processes , Materials and Techniques This paper discusses the different types of joining processes most often used in conjunction with ferrous P/M material grades and components. Information from previous publications and a literature review on the various processes are highlighted. Useful design information and processing techniques are listed along with identifying the weldability of various P/M material compositions.

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