Structural discipline is one of the most important factor in welding technology. In the process of welding, the temperature of the steel structure is very high, the deformation of the steel structure is large, and the quenching process is not timely, which will cause the entire engineering structure to lose its integrity and reduce its load bearing capacity. In order to ensure the accuracy and integrity of the engineering structure, the structural discipline welding must be carried out as required.
Structural discipline welding is a welding process that requires higher production technology and process level, more equipment requirements and higher auxiliary materials. In this welding process, the welding environment should be strictly controlled, and the personal safety of the welder should be protected first. To make the operation process smooth, it is necessary to do a good job in the preparation operation and the use of welding materials.
The first is the welding environment and protection measures. For the requirements of welding environment, it can be divided into three types: air environment, airtight environment and semi-open environment. For example, structural discipline welding in a non-airtight environment, it should be noted that the ventilation conditions should be good, and the welding workshop should be equipped with an exhaust ventilation device, so as to well guarantee the safety of workers in the welding workplace. In addition, for people who are welding, a facial respirator is essential to prevent smoke, dust, and other impurities from entering the eyes and nose.
The second is the selection of welding materials and classification of welding materials. For the selection of welding materials, it can be divided into two types: common materials and special materials. In actual work, the welder should choose welding materials according to the material to be welded and the welding procedure. Generally, the common materials for structural discipline welding include copper coating, copper wire and other materials, while the special materials include flux cored wire and submerged arc welding materials. It is worth noting that, regardless of the material used, the welder should pay close attention to its usage and service life, and replace it in time if it is found to be unqualified or out of date.
The third is the choice of welding machine and its parameters. This part mainly includes the current, voltage, and time parameters. In actual work, the selection of welding machine and its parameters should be based on the welding process, welding materials and steel structure. Usually, the welding process should be controlled at a lower current and a higher voltage, and the welding current range can be controlled within the approximate range of the manufacturers required value. The time of welding process should be based on the type of welding materials and the welding parameters to ensure the quality of the welding structure.
The fourth is the functional of auxiliary materials in welding process. In actual operation, welding materials such as welding wire, flux and protective gas can play a great role in the welding process. First of all, the welding wire should be selected according to the requirements of steel structure, and the flux should be selected according to the welding materials. Generally, the flux cored wire or plasma arc welding is the optimal choice, because these welding materials are easier to use and have higher control of welding process. Secondly, in terms of protective gas, it is necessary to choose the right gas, such as argon, etc., and the gas flux should be properly adjusted according to the steel structure and welding parameters.
To sum up, structural discipline welding is a highly demanding welding process, which requires not only more stringent production technology, but also higher welding standards. Therefore, in actual work, the welder must do a good job in the preparation work, calibration, welding environment protection and welding materials selection, and ensure the accuracy of welding. Only by doing so can we ensure the accuracy and integrity of the engineering structure and guarantee the safety of the personal welder.
