Household, where roughly are different domestic Affairs, it is difficult to imagine without the welding machine, since the time we have a modern, a lot of things in the household mainly consists of metal, which is sometimes required to connect to each other by welding.
Welding machines are currently very common, so decided to make it at home it is necessary that it was easy as ABC, otherwise a rare person will take up this skill. And you can’t even imagine how simple it is, let’s make sure of this, having made spot welding machine fully at home.
That would make the spot welding machine we need:
- Transformer any microwave oven;
- Network cable (can be from the same microwave);
- Microswitch (again, you can get it from the microwave, there’s several of them);
- Wire diameter 2.5 mm length of 1-1,5 m with flat terminals on both sides – 2 PCs.;
- The isolating element to terminal flat for 7.4 mm male to 2 PCs.;
- Heat shrink tube diameter 6 mm length 3 cm – 4 PCs.;
- Heat shrink tube with a diameter of 1.5 cm long 6-7 cm – 2 PCs.;
- Welding cable section 50 mm2 – 1.5 m;
- Copper ferrule on the cable section 50 mm2 – 2 PCs.;
- Soldering iron tip with diameter of 12.5 mm;
- Copper busbar width 20 mm thickness 3 mm length 40 cm 2 PCs.
- Wooden block 40 by 40 mm length 30 cm – 2 PCs.;
- Wooden block 40 by 40 mm long 15 cm – 2 PCs.;
- Bolt diameter: 8 mm length 3 cm – 2 PCs.;
- Bolt diameter: 8 mm length 7 cm – 4 PCs.;
- Small hinge – 2 PCs;
- Screw long, 2 cm – 4 PCs.;
- The long screw 7 cm – 4 PCs.
For production you will need the following tool:
- The metal rod (approximately: diameter 1.5 cm, length – 15cm);
- Flat head screwdriver;
- Phillips screwdriver;
- Grinding machine;
- A drill with a diameter of 9 mm.
Instructions for making spot welding machine at home
Take a transformer from any of the microwave (the more power, the faster will be the process of welding) and remove the secondary winding (a wire with a smaller cross-section). This can be done either with a grinder or hacksaw, or chisel, as you prefer. Practice shows that it is more convenient to do it with a chisel, it is a much faster. Bring down chisel wire on both sides. The most important thing when you remove the secondary winding not to damage the primary.
The remains of the winding of the transformer gently knocks with the hammer and any metal rod. Strong strikes when you remove the transformer does not produce, as there is a chance of the bundle of plates of the transformer core that will lead him into disrepair.
After removal of the secondary winding remains on a paper that insulated the coil from the core, it should be removed by a flat screwdriver.
Now with the same metal rod and a hammer knock out the magnetic shunts between the primary and secondary windings. If they leave the power of the unit will be less.
Many argue that you need to consider the direction of the primary winding and in accordance with it in the same direction to wind a new secondary coil, but as shown, the confusion, the device will work in any case.
As a new wire of the secondary winding will use welding cable. You can use the cable cross-section 25 mm2. Practice shows that the thicker the cable, the faster the process, but the best is recommended for use with this device, the cable section 50 mm2.
The cable on both sides crimping with copper lugs by means of a vise or with a hammer. Put on the terminals of the large heat shrink tubing and fix them with a torch or regular lighter, as you would prefer.
Winding the finished cable on a transformer core, making at least one turn, that would be the end of the cable was on one side. You can do two turns, and the welding power will increase. So you can adjust your needs depending on the work.
Now take two wires with a diameter of 2.5 mm flat terminals. On one side of the wires, put on the insulating elements attached to other heat shrink tubing. Side wires with insulating elements connected to the microswitch.
One wire coming from the switch connected to the primary winding, the other connected with a network cable, the remaining wire of the network cable connected to the primary winding. The ground wire on the power cord we don’t need it convenient way isolate.
Left to do the contact tongs with electrodes, the unit was full. To make pliers in a variety of ways, we’re going to do, as always, simple and practical.
Apilevel two rods at 5 cm from sting for soldering, on one end of each rod sharpened ends, what would the diameter was reduced to 5 mm. It will be our electrodes. Put each electrode in the center of each copper bus bars and bend them, clasping tightly the electrodes. Easier to do it in a vise.
Near the site of the bend, drill a hole and fix the electrodes in the tire small bolts. At a distance of 5-6 cm from the electrodes and at the other end of tire holes for fastening with rods. Apply the tire to the long bars at the beginning, drilled and put the tires on the long bolts.
It only remains to tie the two long bars perpendicular to the shortest and to put short sticks to the loop. Pin pliers ready. In the process, the electrodes can be regularly cleaned, dragging between them the sandpaper.
Connect the ends of a welding cable to the middle bolts on copper tires.
And here, at this stage your new home the machine is ready. It can be used a lot in what works as enough of your wits, here are some of them:
- Loosen rusted bolt or nut by heating them;
- To heat any rod that would have easily bent or flattened;
- Cook each other a metal plate or other form of metal.