After the necessary learning on pieces of metal (bars and plates), you will be able to pass to the realization of an outdoor lantern, exercise besides proposed to the welding students in formation.
- Metal square
- Welding machine
- Mass clamp
- Mask and protective gloves
- Hammer to prick
- Wire brush
- sheet metal
- Welding angle
- Constitution of the building
1. After all preliminary operations: measuring, tracing, miter cutting, place each angle between the jaws of a vise and file the end. By scouring the metal, you prepare it for welding.
2. Using a clamp, attach one of the corners to the edge of the marble that serves as the work surface.
3. Put the second angle in the assembly position. Be sure to correct the set-up with a square and secure this angle with a clamp.
4. Attach the ground clamp to one of the brackets and proceed with arc welding. Always take the same precautions to work: wear protective gloves and hold the welding mask in front of your face. Rub the electrode on the metal and quickly raise it a few millimeters. Hold it slightly inclined in the direction of advance of the weld to promote the subsequent release of the slag.
Constitution of the building
5. After cooling the metal, use the prick hammer to remove the slag, that is, the film covering the weld seam.
6. Check the weld correction made by placing the two assembled angles in the angle of a square. Then grind the outer surface of the weld to give it a clean, even appearance. Use a portable grinder equipped with an abrasive disc.
7. After welding in turn two other angles to form the top square of the lantern, remove the slag using the prick hammer, inside the angles and on their outer surface.
8. Secure the assembled square on the worktop with a clamp. Use a portable angle grinder to sand the outer surfaces of the welds.
9. The body of the lantern is made up of two U's joined at their base by angles. U are made by welding angles. Once the weld seams are made in the corners, secure the assembled angles to grind the welds; use the portable grinder. Previously, you will have, of course, eliminated the slag with the hammer.
10. Using clamps, hold the top square of the lantern and the rest of the "rack" together. Weld inside the four corners, after attaching the ground clamp on one of the angles, to a clean place. As after each weld, use the prick hammer to remove the slag and grind to sharpen the outer surface of the welds.
11. After cutting four isosceles triangles from a sheet of metal, using a jigsaw, file the gripping zones to prepare them for welding. Wedge two of these sheets so that their bases form a right angle and one of their sides is joined. Place a wedge inside the formed corner to hold the assembly together. Weld and repeat the operation to assemble the four triangles. Place the roof thus formed on the top square of the lantern frame. Make a weld bead all around the base of the hat. Eliminate the slag with the hammer; grind the solder to give it a crisp, clean and shiny look. Weld on the top of the roof the end of the stem.
12. The lantern is finished. All that remains is to fix on the gallows decorative scrolls. Immobilize the volute on the paw with a clamp, and weld to the places where they are in contact.
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