Welding Presented by Robert Pelton & Tyson Baker MeEn 372 December 10, 2001.

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Presentation transcript:

Welding Presented by Robert Pelton & Tyson Baker MeEn 372 December 10, 2001

Outline Applications Equipment/Processes Specifications Joint types Weld Joints Stress Concentrations Stress Calculations

Applications

Types MIG (Metal Inert Gas) TIG (Tungsten Inert Gas) SAW (Submerged Arc Welding) SMAW (Shielded Metal Arc Welding)

Equipment

Fundamentals Electrode Filler material –Solid –Cored Shielding gas –Argon –Nitrogen –Helium

Specifications MIG –Capacity: to in –consumable electrode –Weld materials: Carbon steels, low alloy steels, stainless steels, most aluminum alloys, zinc based copper alloys TIG –Capacity: to in –Non-consumable tungsten electrode

Considerations Accessibility Distortion Heat Spatter Surface finish Automation

Problems

Causes Cracks Cavities (Porosity) Rough Dirty Bead Incomplete fusion Good Weld Surface Porosity

Joint Types

Stress Concentration

Stress Calculations

Weld strength

Web Sites American Welding Societyhttp:// Welding and Joining Information Networkhttp:// Welding Theory and Application, Department of the Army, Washington, DC, 7 May 1993http:// Lincon Electric (welding supply co.) Welding Procedures and Welding Techniqueshttp://

References Todd, Robert H., et al., Manufacturing Processes Reference Guide, Industrial Press Inc. New York, cfmhttp:// cfm

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