A plasma and double tig combined welding device and method for medium and thick plates

Abstract

A plasma and double TIG combined welding device and method for medium-thick plates belong to the technical field of plasma and TIG welding equipment and methods, and are used to improve the efficiency and welding quality of plasma and TIG welding for medium-thick plates. The technical solution is: the present invention combines two TIG welding machines with plasma welding machines, and adjusts the collaborative control parameters of double TIG welding through programmable logic controller PLC, Linux embedded controller, CAN bus, and ARM actuators , to achieve collaborative control requirements. The invention gives full play to the advantages of plasma and TIG combined welding, solves the problems of low efficiency and difficult quality assurance of plasma welding of medium and thick plates in the prior art, and is an innovation of plasma and TIG combined welding technology. The invention effectively improves the plasma welding efficiency of medium-thick plates, ensures the welding quality, meets the needs of production development, and has remarkable economic benefits.

Description

technical field [0001] The invention relates to a combined plasma and TIG welding device and method for medium-thick plates, belonging to the technical field of plasma and TIG welding equipment and methods. Background technique [0002] At present, in the use of plasma welding or its combined welding methods, there are mainly the following three welding methods. [0003] 1. Plasma filler wire welding method. There are two disadvantages in adopting this method: one is the high requirement for the clearance and misalignment of the assembly; the other is the poor adaptability of the welding process. [0004] 2. Plasma and TIG welding methods. TIG welding is the abbreviation of tungsten inert gas shielded welding. Although the good coverage ability of TIG welding method can be used by this method, due to the limitation of TIG welding speed, it is difficult to weld simultaneously with plasma during high-speed plasma welding. At present, manufacturers usually use plasma botto...

AI Technical Summary

Problems solved by technology

There are two shortcomings in this method: one is the high requirements for the gap and misalignment of the assembly; the other is the poor adaptability of the welding process

Although this method can increase the deposition rate, the disadvantage is that the hot wire must be in contact with the base metal to form a conductive circuit, otherwise, welding wire spatter will occur, slag inclusion is easy, and the quality of the weld will be affected.

[0006] The above three methods all have deficiencies that are difficult to overcome, especially in the welding of medium and thick plates. Although the existing plasma and TIG welding methods use different combinations, there are still long welding times and low production efficiency. , Welding quality cannot be effectively guaranteed, and the combined advantages of plasma welding and TIG welding cannot be brought into play, and it is difficult to meet the needs of users, which has become a difficult problem restricting the rapid development of production, which urgently needs to be solved

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