Tips for choosing the welding inverter machine

the people who earn their bread with their own hands, often raises the question of how to choose the inverter welding machine to perform work at home and in the country.

need for this kind occurs for various reasons.

is not to say that the welding machine is just as popular device as a cooker.

At the same time, practice shows that in the right hands it can bring good income on the execution of orders for the public and small businesses.

To do this, choose the appropriate model of the unit, which will meet the specific requirements.

operating principle of welding machine

Today the market offers devices with different power, purpose and function.

Experts share of this type of equipment into two groups - electric and gas.

Rating gas equipment for low home.Especially for applications in this sphere gas systems are not made.Adapting existing units uncomfortable and even unsafe.

Video:

best option for DIY - choose an electric inverter welding machine.

In order to gain the skills to work with such a device, it is necessary to do an internship at an experienced welder or enroll in training courses.

simplest design of the welding machine is a transformer that converts household voltage 220/380 Volt operating voltage of 5-6V.

The strength of the current is increased from 4 to 60 amps and more.In this mode, the electricity is converted to heat energy, which is sufficient to melt the metal.

arc temperature reaches 3000 - 4000 degrees.During welding, it is important to not change the size of the arc.

If you change the arc length changes heating temperature of the welded parts in certain areas.If this happens, the weld quality is low.

Electric welding machines, depending on the shape of the operating voltage, divided into the following types:

• welding transformers;
• welding rectifiers;
• inverters.

Before choosing a particular type of welding machine for the home and garden, you need to carefully read the product specifications, the terms of its operation, storage and maintenance.

Practice shows that the inverter device for welding is used occasionally.Most of the time the unit is stored somewhere in the garage or at the cottage.

Under these circumstances, it is necessary to provide the appropriate conditions for its storage.

Welding transformers

By design, this is the easiest and has long produced welding machine.The principle of operation is that the line voltage is lowered to the required level for welding.

operating current value is adjusted by changing the distance between the primary and secondary windings.High-quality welding machine so requires highly skilled and auxiliary equipment.

Currently, welding non-ferrous metals such device is no longer produced.Efficiency of the device, in compliance with all required conditions, can reach 90%.

A significant part of the energy consumed for heating the transformer windings.

The upgraded models are used for the cooling fans.A serious drawback that limits the use of the device at home, it is a lot of weight.

It can reach a hundred kilos and up.Select a product dare not everyone.With the advent of on the market a new generation of machines, welding transformer rating dropped.

him to continue to select and use thanks to two important parameters - the low cost and high reliability.

fineness of the situation is that the quality of electric power in the networks domestic purposes does not always correspond to the requirements of the standard.

Mains voltage can unpredictably "sag" or "skaknut".Welding transformer easily tolerate such fluctuations.

Welding rectifier

Welding rectifiers in its design is more complicated than the previous type.The rectifier is a device that converts alternating current to direct current.

industry produces several types of welding rectifiers.

Each species has its own design and purpose:

• classic;
• mnogopostovoy;
• inverter.

Any of these devices work on the same principle.In the first stage the line voltage is reduced to the desired value.Then the alternating current is converted to DC.

And the magnitude of the DC regulated under specific welding conditions.

Converting AC to DC is performed by diode or triac circuits.An important feature of this design is the possibility of modulating the working current.

It is this function determines the quality of the weld.Rectifier welding machine has a high rating among similar devices.

Video:

mnogopostovoy devices are used on large sites where welding work is carried out on different sites.In a domestic environment, they do not apply.

vehicle weight and its dimensions are too large for use in domestic conditions.Reliability, as in the classic transformer is high.

inverter unit

for home or garden more comfortable and practical to choose the inverter unit.Today it is the most convenient type of those used in the welding business.

functional diagram of an inverter device is much more complicated than the classical or rectifying apparatus.

The first difference is that the starting voltage of 220V and a frequency of 50 Hz is converted into a frequency of more than 10kHz.

and high frequency current is already used for the conversion to DC and then directly welding.

process of metal welding is performed with a stable arc burning, which ensures high quality weld.

Unlike devices running on the classical scheme, the inverter device has minimal size and weight.

achieve such a result was possible due to the fact that the concept of inverter welding machine has become more complicated.Conversion

source voltage is performed using the power transistors and other electronic devices.This allows you to control the size of the operating voltage with high accuracy.

Currently, the consumer gets only one question, which of the inverter to choose?The smallest models have a weight of three kilograms.

If you mention the rating, then inverters today he is the highest.

operating parameters of the inverter

Today the market is represented by a wide range of welding inverters for use in various fields.

welding equipment to classify the following features:

• industrial;
• professional;
• household.

Industrial inverter device is available for sale, as a rule, do not come.

professional equipment makes sense to look if there are plans to carry out welding works for the public on request.Home and garden need to buy household appliances class.

Almost all such devices are designated inverter MMA, with an indication of the value of the operating current.

Before you buy inverter welding machine should weigh and evaluate the forthcoming volume of work and the conditions in which they will run.

Video:

correctly made the calculation will allow to choose optimal model suitable for each case.

at service stations Car used a semi-automatic welding inverter for repair of body parts.

Practice shows that in this case it is possible to manage a household appliance of the mid-market.

should be clearly borne in mind that the systematic overload of the device leads to rapid wear of components and parts.It is better to have some headroom.

magnitude of the input voltage

deciding which to buy a welding machine, it is necessary first of all to pay attention to the value of the input voltage.

The data sheet specifies the range of values.

highest rating are devices with a range of 170 to 250 volts.Of these patterns and must make a choice.

Duty cycle

Activation is indicated as a percentage.A good PV inverter is 70%.

This means that after ten minutes of continuous operation it is necessary to make a break for 3 minutes.

If the break is not done, the thermal protection work.

And still have to wait until the unit has cooled.

electrode diameter

For domestic work used electrodes with a diameter of 1.5 to 6 mm.Which one to choose is determined by the magnitude of the operating current.

The data sheet indicates the maximum diameter of the electrode.Experienced welders are advised to choose a machine with a small margin.

inverter, designed for welding electrode diameter of 4 mm, works well with the "troika".

known companies manufacturers

choosing a welding machine for home need to pay attention to the rating of the manufacturer.Today welders inverter manufactured by companies from different countries.

first criterion, which is taken as the basis - the price of products.Kemppi inverter manufactured in Finland.

for domestic use such a device is suitable best.However, it stops the cost of many buyers.

Video:

Fubag German company produces a wide range of devices for the home.Paying attention to these devices need to properly make a choice that is not to overpay and get a reliable product.

Before choosing an inverter, it is necessary to get acquainted with reviews of those who are already using welding machines.

is important not to be carried out on the cheapest deals.But the pay is not worth it.