The basic population of young and middle age is engaged in the construction of their own housing. And the construction is associated with metal, very often we are asking about the method of fastening metal products. And very often the only way out, which is the most reliable way of fastening - fastening by welding. Proceeding from this, almost every owner wants to own a welding machine. The market offers consumers a lot of welding machines, which can work even for people who do not previously engaged in welding. Having exhausted knowledge about welding machines, and this article, we hope, will help you in choosing the right quality tool.
Content
Types of welding machines
There are four types of welding machines:
- welding of alternating current;
- welding of direct current;
- Semiautomatic welding machine in gas environment MIG / MAG method;
-Welding inverter.
Each type of welding machine has pros and cons and can be used for welding certain types of metal.
Therefore, consider each type of welding machine in detail.
Welding transformer of alternating current
This type of welding takes place using the MMA method and only with the use of melting electrodes.
The electrodes can be rutile or with a basic coating.
Welding machines of this type have the widest distribution. This type of device is simple in design, reliable in operation, able to serve a long time, the price of these devices is quite democratic. Welders of this type are manufactured by Wester and Awelco.
Awelco Club 1850, Awelco Hobbu 2000 were widely used in everyday life.
If you need a model with high capacity, it is better to use Awelco Tornado 250 or Awelco Pulsar 305.
But these AC machines can only weld ferrous metals butt and lap.
Welding transformer for direct current
Such welding machines are sometimes called welding rectifiers, welding is carried out with the help of melting electrodes.
The design of these devices is similar to AC devices and plus the output diode or thyristor rectifier.
Welding DC, by converting AC to DC, loses some of its power, but has a heavier design.
Plus, you can consider a more stable arc, the ability to brew ferrous metals, non-ferrous and stainless steel.
Welding machines of this type are more expensive than AC welding machines, they are used very rarely in everyday life, mainly in industry.
Semi-automatic welding machine for gas welding, MIG / MAG
Welding machines have good performance, are convenient in operation, but have more complex construction and a higher price.
Welding semi-automatic consists of a power source (transformer, rectifier, inverter), has a wire drive, a burner and a control unit. Instead of electrodes, metal wire is used, with a thickness of 0.6 to 1.2 mm.
The electric current at the output is regulated, the wire feed speed varies depending on the need.
Welding semiautomatic machines, depending on the subspecies, can only work on gas, without gas, or combine two types of welding.
If it works without gas, flux wire is used, if it works with gas, a gas cylinder with CO2, with argon, or argon together with CO2 is selected. The gas is selected from the type of material to be welded.
Welding of this kind can weld steel, stainless steel, aluminum and iron. Automotive shops widely use welding of this kind. Semiautomatic machines can be single-phase and three-phase.
For household purposes, most often used models Awelco Easucraft 100, Wester Mig 120.
Welding inverter
Welding of this type at the peak of popularity, although it has the highest price, but is the most modern and highly technological type of equipment. The welding inverter has a light weight of 3 kg, small size, can work with serious voltage drops, has a system of accelerated ignition of the arc, is able to create a welding of high quality.
Inverter technology has created welding machines of several types, which can use various welding methods, for example, arc welding of MMA.
The most inexpensive models are Wester IWT and IWM. Inverters can be not only for professional use, but also for household.
Recently, there have appeared universal inverter devices.
One universal inverter welding machine is able to replace the three above mentioned welding machines, since one machine can be welded with MMA, argon-arc welding (TIG), and semi-automatic (MIG / MAG) welding.
For example, the welding semi-automatic ERGUS Multi Pro 2000, weighs only 4.9 kg. and perfect for a small workshop.
How to choose a welding machine for your home
If you have decided on the type of welding machine, choose a specific model, relying on the necessary performance indicators:
Input voltage, can be 220 V and 380 V. The inverter does not react to voltage fluctuations, and other types of welding react painfully to a rise or fall of voltage;
- the voltage of idling varies from 45 to 79 V. A more simple arc arcing and good combustion stability provides a higher voltage. This must be taken into account when choosing electrodes;
- output current, household appliances from 10 to 350 A, professional to 500 A. High current gives more possibilities to the device, since it allows using large diameter electrodes and doing more complicated work. Rutile electrodes work at a lower current, and the main electrodes will work at higher current values;
The diameter of the electrodes is from 0.5 to 6 mm. In general, electrodes are used for 2-3 mm, wire 0.6-1.2 mm is used for semiautomatic machines. The diameter of the electrode and wire directly depends on the thickness of the material to be welded.
Welding machine, which is better
When choosing welding for work in everyday life, start from the type of material that you will be cooking.
Determine the maximum output current.
The higher the output current and the operating voltage, the sooner the apparatus will heat up and the thermal protection will work.
Therefore, choose the type of welding that has 20-30% of the reserve to the maximum output current value.
If you have never worked with welding, it is best to purchase an inverter-type device.
In any case, with this device you get a quality seam, it does not react to unstable voltage in the networks and has a lot of other advantages.
Loading ...