Choosing a welding machine is not easy, especially for the inexperienced. When choosing a welding machine, a variety of criteria should be considered, ranging from the type of welding. Inexperienced welders who are just getting acquainted with this type of equipment should know what types of machines exist and how they differ.
The most popular are inverter-type machines, semi-automatic machines, resistance welding, transformers and plasma cutting machines.
In the first place in popularity are inverter welding. They create seams of metal elements with electrodes. In different models of this type of device, you can use electrodes of different diameters, ranging from 1.6 and larger. Some are capable of working with electrodes with a diameter of 4.5 mm. This type of apparatus operates on a single-phase power supply. They differ from other types in resistance to sudden voltage surges. Although the machine is able to cope with sudden changes in voltage, it cannot cope with dust. This is his main enemy. If it enters the cooling system, it interferes with the normal operation of the fans and may cause the device to malfunction. To prevent this from happening, it is necessary to monitor the operation of all welding systems, remove dust.
For those who have come across devices, you can buy welding of a semi-automatic type. This device is capable of working with both electrodes and welding wires. Semi-automatic machines are different: for welding with solid steel wire, solid steel and aluminum wire, aluminum, steel or aluminum flux cored wires. In addition to the wire, electrodes with a diameter of 1.6 mm or more can be used for work.
Depending on the type of material to be welded, the type of apparatus is also selected. So, to connect metal products, contact welding can be used. The principle of operation of this device is to melt metals to a soft or liquid state by heating products by touching welding. After melting the metal, the elements are crimped. This creates a highly durable seam.
Among all existing types of devices, the most popular in everyday life is the welding transformer. To make a suture with this device, electrodes are needed. Different models can use different types of electrodes, with a diameter of 1.6 mm. Welding transformers differ from other types of devices in their low power consumption. Their power starts from 2.4 kW.
In addition to these, there are other types of welding, including plasma cutters.
