Shielded Metal Arc Welding
Butt Joint
Aim: To make butt joint by performing shielded metal arc welding (SMAW) using coated consumable stick electrodes.
Tools:Â
Measurement Tools
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Steel Rule
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Inch Tape
Holding Device
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Bench Vice
Cutting Tools:
Welding Tools
 Tong
 |
Chipping Hammer
 |
Furnishing Tools
Files
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- Cut the required size mild steel piece with the help of hand hacksaw from the iron section.
- Prepare the edges of pieces to be welded.
- For more in detail please watch this Welding joint video
- Set the welding parameter like welding current, voltage, etc.
- Wear protective apron, goggles and hand glove.
- Keep the workpieces in butt joint position (1 mm away from each other), at the welding table.Â
- Ensure that the circuit is properly completed and earthing is done.
- Insert a coated stick electrode in the electrode holder and produce arc by striking the electrode with metallic surface of the welding table.
- Perform the tacking operation on both ends.
- Perform the butt welding operation.
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Two major parameters during SMAW are the welding speed and feed of the electrode toward the weld pool. These parameters should be properly controlled to ensure a defect-free weld.
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- After welding, hold the workpiece with a tong and keep it on floor.
- Remove the slag with the help of a chipping hammer.
- Clean the workpiece with the help of a wire brush.
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