Welding now – is the process of melting any metal to metal fastening elements by means of welding. During this process the metal edges of the welded elements mixed in the welding seam of by heating. Let us consider more in detail the process of tig welding. For the first time this welding technology has been applied in the late nineteenth century in our country, and then was improved by Western scientists. High temperature in arc welding produced by the welding electrode in the form of an arc column. For welding electrodes or steel rod is current. Sometimes, instead of electrode used so-called welding wire, which usually melts. In the industry's most in demand for electric welding non-ferrous metals is the second method, which uses Turkish welding wire.
On what principle the process proceeds Electric? With conventional electrical cable equipment for electric welding with direct current is connected to the abutting elements, and using hot cable – to the electrode holder. A pillar of the arc lights in the interval between repeated collision and the withdrawal of the welding electrode from the seam. At the tip of the electrode temperature reaches 6,500 F, the basic metal and metal core electrode is melted to form a "puddle" of molten metal (crater). In time distribution of craters on the joints it cools, forming a strong weld. Shielding of the arc Usually, the process of electric welding is not an end. Under the action of high temperature metals have the property react with oxygen and nitrogen from the environment.
Welding seam is oxidized, resulting in joint is not reliable. It is in this regard during arc welding arc and weld closed shell of any gas – such as argon. This protection is called the screening of the electric arc and welding process, argon arc welding. In addition to isolation from the action of atmospheric oxygen, the screening also significantly improves the quality of the weld. Additional domestic welding equipment to improve the quality of welding is also desirable to use a variety of additional equipment. Welding Rectifier: apparatus required in arc welding, semi-automatic welding and argon products by alternating current. Welding transformer: additional welding equipment, used for manual welding of welding variables electrodes with alternating current products of low-carbon alloys. This device allows you to adjust the current. Welding transformer can also be equipped with manual control winding. Due to this Transformer is an indispensable manual electric welding on top of each other at a distance of welding stations, where all the time required to move from one section to another. Inverter: Welding equipment that is designed to work in a power surge when using the generators of electricity and power cables of great length. Due to the increased stability of the generated Dielectric current welding inverters are extremely easy to use and can significantly improve the quality of the weld. Also, welding inverters are capable of working in a wide range of currents under high load. This welding equipment can be be staffed guard against any possible surges, spikes from the electrode and the voltage at startup.