What are the advantages of electrode arc welding?

Electrode arc welding

In arc welding, the arc combustion between work pieces and the high temperature generated at the end of the electrode melt the electrode coating, work piece and welding core. The end of the molten core quickly forms small metal droplets, which are transferred to the melting surface of local work pieces and fused together to form amolten pool. The slag and gas produced in the process of coating melting not only isolate the air around the arc from the molten pool,but also produce a series of metallurgical reactions with the base metal and molten core to ensure the performance of the weld. As the arc moves forward on the work piece at an appropriate speed and arc length, the liquid metal in the molten pool cools and crystallizes to form a weld.

Electrode arc welding has the following advantages:

1) The equipment used has simple structure, light weight and low cost.The welding operation does not require complex auxiliary equipment,but only simple auxiliary tools, so the AC and DC welding machines used in electrode arc welding are relatively simple. Therefore, the small investment in purchasing equipment and convenient one of the reasons for its wide application.

2) No auxiliary gas protection is required. The welding rod can not only provide filler metal, protect the molten pool and welding place from oxidation during welding, but also has strong wind resistance.

3) Strong adaptability and flexible operation. Electrode arc welding is suitable for welding irregular welds and short welds at any position of small batch products or single piece and space, as well as other welds that are not easy to realize mechanized welding. Welding can be carried out anywhere the H electrode can reach.

4) It has a wide range of applications and is suitable for the welding of most alloys and industrial metals. Electrode arc welding selects appropriate electrodes, which can not only weld low alloy steel and carbon steel, but also non-ferrous metals and high alloy steel. It can not only weld cast iron repair welding and various overlapping welding of various metal materials, but also weld the same kind of metal and dissimilar metals.