Add filler metal to the pool and begin welding using small semicircular

Add filler metal to the pool and begin welding using

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Add filler metal to the pool and begin welding using small semicircular movements. Keep the weld pool in the corner of the joint as welding rod is added. Direct the flame toward the surface of the bottom piece. Keep the bead on the top workpiece straight and uniform . 32
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EXERCISE # 4 TEE JOINT FLAT POSITION Setup: Use a properly set up and adjusted oxyacetylene cutting torch , proper safety equipment, two clean pieces of 1/16" thick, 1.25” wide X 3" long mild steel, and proper size of filler rod. 33
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TEE JOINT FLAT POSITION 34
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Procedure: Position the work pieces on the firebricks. Use a magnet or another firebrick to hold the vertical piece in place. Tackweld each end. If using a magnet remove it at this time. Light the torch and hold it at a 45 degree work angle and a 60 degree travel angle. Form a molten weld pool at one end and add welding rod. Keep tip of flame 3/32" away from the surface. Heating the vertical piece too much will cause undercutting. This can be stopped by adding rod to the top of the weld pool. As you weld, add enough welding rod to produce a 1/8” to 3/16" bead width. Practice making fillet joint welds until you can consistently make uniform beads. When you are finished with this exercise , perform the equipment shutting down procedure, and thn, clean up your work area. 35
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EXERCISE # 5 OUTSIDE CORNER JOINT, FLAT POSITION Setup: Use a properly set up and adjusted oxyacetylene welding torch , proper safety equipment, two clean pieces of 1/16" thick, 1.25” wide X 3" long mild steel, and proper size of filler rod. You will make a flat position outside corner joint. Place one of the pieces of metal in a jig or on a fire brick and hold or brace the other piece of metal vertically on it. 36
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Ox-AcW Outside Corner Joint, Flat Position 37
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Procedure: Tack the ends together and one or two tacks on the middle. Hold the torch as shown and make a uniform weld along the joint. This weld could also be done satisfactorily, without rod When you have finished this exercise , perform the equipment shutting down procedure, and then, clean up your work area. Check for complete penetration. 38
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III. MMAW ABT 52 (2017)
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MIG Welding Exercise #1 HORIZONTAL AT 45 DEGREE ANGLE BEADS SETUP: Using a properly set up and adjusted MIG welding machine, proper safety equipment, .035 diameter wire , and provided welding coupon(1/8”x 2”x 3.5” strip ), make a few stringer beads, on both sides; one side with forehand motion and the other side with backhand motion.
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PROCEDURE: 1. Follow the manufacturer’s recommendations to set the welding machine. 2.Hold the welding coupon on a 45 degree angle plane 3. Start horizontally , at one end of the work piece and maintain 1/4 to 3/8" stick out from gun nozzle tip to work piece.
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