The electrode arc welding equipment is simple and flexible. It is not limited by the venue and welding position. It can be welded with a wide range of metal materials, but the labor conditions are poor and the efficiency is low.
The commonly used welding methods include the arc welding of the electrode, the automatic arc welding, the tungsten pole arc welding, and the gas protection welding.
The key components of plasma welding accessories mainly include welding power supply, plasma arc generator (welding gun), control system, gas supply and water supply system.
Welding power supply is the power source of plasma welding equipment. Generally, DC power supplies with vertical external characteristics or steep drop characteristics are generally adopted to prevent welding current from changing due to the changes in the arc length, ensuring the uniform and stable melting depth and the shape of the weld.
Plasma arc generator, that is, welded gun, is the core component in plasma welding. It is mainly composed of electrode, electrode chip, compressed nozzle, intermediate insulator, upper gun body, lower gun body and cooling sleeve. Among them, compressed nozzles and electrodes are the key, which directly affects the performance of plasma arcs and the stability of the welding technology. The parameters such as the aperture, the length of the hole, and the compression angle of the nozzle have an important impact on the compression effect and stability of the ionic arc.
The control system is responsible for controlling each part of the welding equipment to enter and exit the working state in accordance with the scheduled procedures. It includes high -frequency generator control circuits, wire -free motor drag circuits, welded cars or dedicated work control circuits, and program -controlled circuits. It can accurately set, track and adjust the welding technology.
The gas supply and water supply system provides the necessary plasma gas and protective gas, as well as cooling water for plasma welding. Plasma gas is used to form a plasma arc, protect the gas to prevent oxidation and pollution during the weldingtechnology, and cooling water is used for cooling welding and electrodes to ensure the continuity and stability of the weldingtechnology.
These key components work together, so that plasma welding technology has the characteristics of thermal energy concentration, strong welding arc, fast welding speed, high efficiency, and small deformation. It is widely used in many fields such as aerospace, automobile manufacturing, petrochemical, electronic components.
The welding technology of high melting deep arc welding (DP-TIG) is a new and high-efficiency automatic welding technology. It uses a new type of welding method that can achieve "keyhole" (lock holes or small holes). The traditional TIG arc is low, the depth of melting, and low welding efficiency.
The high-melting deep arc welding DP-TIG achieves the effect of the plasma arc by the high-efficiency electromagnetic compression of the arc. When welding, the arc energy is concentrated. During the welding technology, the arc pressure and the surface tension of the liquid metal metal metal of the molten tension achieve a balanced. The effect, with super strong penetration ability, can be welded with carbon steel plates below 10mm, stainless steel plates below 12mm, and titanium alloy plates below 14mm. The welding technology has not only the traditional welding surface effect, but also the excellent penetration of plasma welding.
Plasma welding is a welding method that uses plasma arcs to make heat sources. It is an automatic welding technology. Compared with the traditional TIG, it has greatly improved its technology performance. Plasma gases are generally pure pheasant, with good ionization ability and arc stability effects. The protection gas can also be selected according to different materials.
Stainless steel welding uses 95 ~ 97%of the gas+3 ~ 5 hydrogen; rare metals such as titanium pupa are high -pure pheasant; carbon steel is mixed with pure pupa or pillar hydrogen. The principle of choosing a plasma technology method is determined according to the requirements of the user welding specification.
Plasma arc is an ion gas produced a high -temperature ionized gas by electrical ionization. Through the special compressed structure of the welded gun, wears a small hole in the center of the water -cooled nozzle to form a stable plasma compressed arc to melt the workpiece Arc welding technology methods are usually divided into three types: arc and non -transfer arc and mixed arcs. They are often used as transfer arc technologyes.
