An arc welding device used for welding the inner cylinder of the reaction kettle

Abstract

The invention relates to the field of arc welding technology, and discloses an arc welding device used for welding the inner cylinder of a reaction kettle, including a welding body, a fixing device is fixedly connected to the bottom of the welding body, and a welding rod is arranged in the middle of the inner cavity of the fixing device . The arc welding device used for welding the inner cylinder of the reaction kettle, through the cooperation between the force control device, the degaussing device, the limit shaft, the linkage rod and the circumferential clamping rail, when the welding rod contacts the welding piece, the moment, The magnetic flux density in the edge area of ​​the welding point increases, through the mutual repulsion between the arc-shaped permanent magnet block and its internal magnetic flux, and then generates a mutual force on the welding rod with the increase of the original magnetic flux density, thereby canceling it, and then avoiding welding The instantaneous increase of the magnetic flux density in the edge area of ​​the point produces the effect that the force affecting the position of the welding point of the welding rod shifts its welding position, which improves the accuracy of the welding position and ensures the sealing effect of the welding point at its connection.

Description

technical field [0001] The invention relates to the technical field of arc welding, in particular to an arc welding device used for welding the inner cylinder of a reaction kettle. Background technique [0002] Reactor is a comprehensive reaction vessel. It is a reaction device designed according to its structure, function and configuration accessories according to the reaction conditions. Before use, the reactor needs to seal and weld the corresponding inner cylinder and jacket of the reactor. The arc welding device is It refers to using the arc as the heat source and using the physical phenomenon of air discharge to convert electrical energy into thermal energy and mechanical energy required for welding, so as to achieve the effect of connecting metals. [0003] When welding the inner cylinder of the existing reactor, it is necessary to start the arc welding to convert the electric energy into the required thermal energy and mechanical energy, and heat and fuse the two sep...

AI Technical Summary

Problems solved by technology

[0004] The invention provides an arc welding device for welding the inner cylinder of a reaction kettle, which has the advantages of improving the accuracy of the welding position, ensuring the sealing effect of the welding point at the joint, reducing the production cost, and protecting the environment , to solve the need to start the arc welding to convert the electric energy into the required heat energy and mechanical energy when welding the inner cylinder of the existing reactor, and heat and fuse the two separate parts to be sealed at the joint, so as to However, during electric welding, when arc welding is performed on the connecting piece, the surface of the connecting piece is squeezed and deformed at this time, resulting in the magnetic flux density in the area away from the welding edge of the connecting piece being greater than that away from the welding area of ​​the connecting piece Magnetic flux density, and through the force of the current in the magnetic field, a forward force is applied to the arc welding during the arc ignition process, which causes the welding process to shift, resulting in a deviation in the position of the welding point, resulting in the required welding There is a part of the defect that is not fused to produce a weld, resulting in poor sealing effect. At the same time, during the welding process, under the action of the high temperature of the arc, the connection part will undergo evaporation and gasification reactions, resulting in a large amount of smoke and dust. Harmful substances or gases such as aerosols and ozone are generally exhausted to the outside through ventilation fans, and fresh air is introduced at the same time to maintain the working environment and prevent harmful substances from being absorbed by the human body. Harmful gases are discharged to the outside, and harmful substances are not collected effectively, which still causes pollution to the environment

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