Plasma/argon-arc welding machine system and control method

Abstract

The invention discloses a plasma/argon-arc welding machine system which comprises a PLC controller, and further comprises a P main control plate, a T main control plate, a plasma welding power source, and an argon-arc welding power source, and further comprises a cooling system dedicated to the welding machine, wherein the P main control plate, the T main control plate, the plasma welding power source and the argon-arc welding power source are respectively connected with the PLC controller; the P main control plate is connected with a P power source, and used for controlling the work of the P power source; the main control plate is connected with a T power source, and is used for controlling the work of the T power source; the P main control plate comprises an IGBT trigger circuit I; the P power source comprises an IGBT group I; when the IGBT trigger circuit I works, the IGBTs of the IGBT group I are conducted after receiving trigger signals, and the plasma welding machine works, otherwise, all the IGBTs of the IGBT group I are cut off, and the plasma welding machine stops working; the T main control plate and the T power source work in the same manner as the P main control plate and the P power source. The system and the control method have the advantage that the plasma welding machine and an argon-arc welding welder are integrated, so that the occupied space is reduced, and the operation is simple and convenient.

Description

technical field [0001] The invention relates to the field of welding equipment, in particular to a plasma / argon arc welding machine system and a control method. Background technique [0002] In the field of mechanical manufacturing, depending on the different process requirements of metal structure workpieces, different welding methods are used, the common ones are argon arc welding, submerged arc welding, CO 2 welding, manual welding and other welding methods. Plasma arc welding technology is a newer and more efficient welding method developed on the basis of argon arc welding technology. [0003] Argon arc welding is a free arc, the arc is umbrella-shaped, and the arc energy is relatively dispersed, so the weld penetration is small, the welding efficiency is low, and the heat input is large, but the weld surface is well formed; because the inert gas Ar is used for welding Seam protection, weld seam comprehensive mechanical properties are good. [0004] Plasma arc is a h...

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Problems solved by technology

[0005] However, in the prior art, the plasma welding power supply, the argon arc welding power supply, and the chiller are independent equipment, which occupy a large space, and the installation and commissioning are complicated. It is necessary to customize a special control system before the equipment can be used in an organic combination, and the operation is complicated. , poor work stability, imprecise control

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