Welding design

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In this chapter, student are expose to welding design

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  • Submitted by Craig Herald Welding Instructor Lee County Area Technology Center Graphics provided compliments of the American Welding Society Education Department
  • Welding design

    1. 1. Weld Joint Geometry and Welding Symbols
    2. 2. ADVANTAGES & DISADVANTAGESOF WELDING JOINTSADVANTAGES DISADVANTAGES• Welded joints have low initial cost • Welded joint cannot be used for• The process is noiseless. impact load and vibrations• welded joints are greater in strength • Being permanent joint the welded• Less machining is required after joint cannot be assembled andwelding. reassembled like screwed joints• Easy to inspect i.e. by x-rays withoutdestroying the piece.• Welded joint can easily be repaired.
    3. 3. GENERAL WELDING SYMBOL
    4. 4. Five Basic Welded Joints Butt JointButt joint- a jointbetween twomembers alignedapproximately inthe same plane
    5. 5. Different Edge Shapesand Symbols for someButt-Joints
    6. 6. Five Basic Welded Joints Corner Joint Corner joint - a joint between two members located at right angles to each other
    7. 7. Some Different EdgeShapes and Symbols forCorner Joints
    8. 8. Five Basic Welded Joints T-JointT- joint - a joint betweentwo members locatedapproximately at rightangles to each other inthe form of a T
    9. 9. Some Different EdgeShapes and Symbols for T-Joint
    10. 10. Five Basic Welded Joints Lap Joint Lap Joint- a joint between two overlapping members
    11. 11. Some Different EdgeShapes and Symbols forLap Joints
    12. 12. Five Basic Welded Joints Edge JointEdge joint- a jointbetween the edges oftwo or more parallelor nearly parallelmembers
    13. 13. Some Different EdgeShapes and Symbols forEdge Joints
    14. 14. Proper terminology is needed ineveryday job communicationa Joint design identifies, “the shape , dimensions, and configuration of the jointa The individual workpieces of a joint are called members .a Three types members nonbutting member, butting member , and splice member
    15. 15. A butting member is “a joint member that is prevented, bythe other member from movement in one directionperpendicular to its thickness dimension”A nonbutting member is “a joint member that is free tomove in any direction perpendicular to its thicknessdimension
    16. 16. A splice member is “ the work piece thatspans the joint in a spliced joint Single-spliced butt joint Double-spliced butt joint with joint filler
    17. 17. LOAD REACTS IN WELDING JOINTSF F STRESS FOR HORIZONTAL LOAD, σ = F/A
    18. 18. ACTIVITY 1

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