Transcription of ASSEMBLY PROCESSES Welding FUNDAMENTALS OF WELDING
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ASSEMBLY PROCESSES Welding FUNDAMENTALS OF WELDING
ME477 Fall 2004. 1. Overview PART VII JOINING &. WELDING A joining process of two materials that ASSEMBLY PROCESSES coalesced at their contacting (faying) surfaces by the application of pressure and/or heat. FUNDAMENTALS OF WELDING Weldment The assemblage Joining - WELDING , brazing, soldering, and adhesive bonding Sometime a filler material to facilitate coalescence. to form a permanent joint between parts Advantage: portable, permanent, stronger than the ASSEMBLY - mechanical methods (usually) of fastening parts together parent materials with a filler metal, the most Some of these methods allow for easy disassembly. economical method to join in terms of material usage and fabrication costs . 1. Overview of WELDING Technology Disadvantage: Expensive manual Labor, high 2. The Weld Joints energy and dangerous, does not allow disassemble 3. Physics of WELDING and defects 4. Features of a Fusion Welded Joint 1 2. Two Types of WELDING WELDING Operation Fusion WELDING melting base metals 50 types PROCESSES (American WELDING Society).
• Plasma Arc Welding (PAW) – a special form of GTAW but with a constricted plasma gas to attain a higher temperature • Carbon Arc Welding – Graphite is used as electrode • Stud Welding – for cookware, heat radiation fin. 15 2. Resistance Welding • RW – heat and pressure to accomplish coalescence. • Power source: heat generated:
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