Instructions on how to make the welding inverter

Periodically, more or less, in the household there is a need for welding.So the idea of ​​welding inverter, so to speak, nurtured over the years.If you will strictly follow our instructions, the manufacturer of welding machine will take approximately five to six hours.But if you will not have the concept of what we do, it is better, of course, buy a ready-made inverter.To date, high-quality devices in the shops are between five and ten thousand.

Welding inverter with their hands

Important!Some highlights of this manual have a high complexity!Be careful.

First step: preparing the groundwork for our home-made inverter

What will be the basis of our inverter?The answer is simple: it is a conventional transformer by a conventional microwave oven.What is a transformer?A pair of coils of copper wire coated with enamel, which is wound on the iron core.Accordingly, the first winding is the primary, and the second - the secondary.It's simple, go ahead.

to basics approach inverter transformer

number of turns on each coil is different.Thus, connected to the mains primary winding, then under the influence of the induction current is generated (by the way, this voltage is smaller than in the primary winding, but a substantially greater amperage) in the secondary winding.

Second step: reduce the number of turns

Reducing the number of turns necessary for the reason that in the transformer, extracted from a microwave oven, a voltage reaches two thousand volts.The picture accompanying this stage, we can clearly see, it looks like this is the transformer, we also intend to improve it a little.So, we set ourselves two objectives:

1. Increase current.
2. Reduce stress.

Prepare Transformer

Any experienced welder will tell you that understated the current very bad effect on the quality of welding, but too high current strength not only slept electrode, but also mutilate metal.

So, proceed to rewind the secondary winding.Doing this you must turn to the next round, but will use a different wire coated with enamel.But first you must carefully cut the old winding in several places, and carefully remove it from the reel.Everything must be done with utmost care so that you do not accidentally damage the primary winding.

We intentionally did not mention any of the thickness of the new insulated wire or the number of turns, as both indicators will depend on the specific model of the transformer and calculate all this is quite simple: you need an ordinary school textbook on physics or a special online calculator.

Also do not forget that once a new coil is ready, it is obligatory to cover tokoizolyatsionnym varnish.Go ahead.

third stage: fasten and connect the coil transformers

Next we need to find a container that would serve our homemade body welding inverters.We, for instance, stopped on the next version.

Housing for welding inverter

We then fasten the two transformers, they should be to each other, in this case index lowering the amperage will be at least fifty amps.What to do next?Linking primary and secondary windings.Thus, the primary winding should be located strictly in parallel, but the secondary can be sequentially.The result is similar to the following indicators:

1. Approximately sixty amps under load.
2. About thirty-eight volts at the output.

Fourth stage: take care of the cooling system

On both sides of the case of our inverter we Fasten two fans operating on the hood and is powered by power supply of a conventional personal computer.In addition, we must take care of the inlets.For this purpose, the bottom of the box several tens we drilled through-holes, through which, in fact, the air will flow into the device.

make holes for air circulation in the inverter

Mass for cables and derzhak can be freely found in any electrical goods store, but if you wish, you can also make them yourself.Approximately it will look like your welding inverter is in working condition.

About tank and gun

So, we are with you figured out how easy it is to make a welding device in the home.Now we are faced with the problem on the tank for the shielding gas.What will it take?Almost nothing: a special cylinder or, in the absence thereof, the old carbon dioxide cylinder of the fire extinguisher.But it's only options, we recommend that you purchase your own desired size balloon.

How to use self-made inverter correctly

After connecting to the power supply controller automatically sets the welding current.If, after this voltage wires will not exceed one hundred volts, then most likely, it is a sure sign of malfunction.

wires and electrode

also consider using an additional fan for cooling.It should be mounted directly on the chassis.

By the way, the inverter is much easier to operate than the transformer device.Primarily, this results in a higher quality weld.Moreover, by using self-made welding inverter you can weld both ferrous and nonferrous metals, as well as the harvesting of a thin sheet.We hope if you are a skilled welder, as well as a skilled handyman, then you do not need extra lessons.

If you will strictly follow our instructions you a few hours to produce the welding machine on their own, using only the materials at hand.By the way, this design will cost you a maximum of one thousand rubles, so think whether to buy an inverter in the store.

In conclusion

So, we have examined the scheme of how to make a welding inverter with their hands improvised.As it turned out, any special equipment or specific materials for this purpose are not required - just only two or three things that have a home, each of us, and direct hands.Everything else is just a matter of technique.

Video - welding machine with their own hands