Argon arc welding has small weld penetration and small machining deformation. The weld has high density, and it is not easy to form defects such as slag inclusion, porosity and undercut. The requirement of nondestructive testing is high, and the weld has good strength, toughness and plasticity. Tensile, bending, impact and other mechanical properties are better than other welding methods. It can better meet the requirements of single-sided welding, double-sided forming and thin-walled welding. The disadvantages are low working efficiency and high processing cost. And the cost varies greatly with the argon market. CO2 gas shielded welder has high efficiency and low cost, and can meet many field operations under general inspection requirements, especially suitable for manpower to catch up with the progress. However, the shortcomings are also obvious, and the use is generally restricted in situations where the state strictly controls the quality of welds.
1. Manual arc welding: equipment introduction (covered electrode type), use of protective tools, adjustment of equipment parameters, welding method and technology, and matters needing attention in welding;
2.CO2 gas shielded welding: the characteristics, equipment introduction, equipment parameter adjustment, welding method and technology, and welding precautions of CO2 gas shielded welding;
3. Argon arc welding: welding characteristics, equipment introduction and parameter adjustment, welding method and technology, and welding precautions of argon arc welding;
4. Resistance welding: introduction of principle, application and matters needing attention;
5. Plasma cutting: equipment introduction, use and precautions:
6. Gas welding (brazing): equipment introduction, connection mode and flame adjustment;
7. Gas cutting: introduction of cutting gun, cutting method and matters needing attention;