What are the requirements for electrode welding?

As a common welding technology, welding rod has strict operating requirements and technical standards. The following are some key requirements for welding rod summarized based on the search results provided:

Safety protection requirements
When performing welding rod, safety protection is the primary consideration. Operators need to wear professional protective equipment, including protective clothing, protective glasses and dust masks to protect themselves from the strong light, metal dust and harmful gases generated during welding. In addition, earplugs are required to reduce the damage to hearing caused by high-intensity welding sound waves.

Equipment inspection and operation specifications
Before starting welding, you must ensure that all welding equipment is in good condition, including cables, welding machines, etc., and ensure that the equipment has been properly grounded to prevent electric shock accidents. During operation, welders should maintain a correct posture and avoid bending or twisting their bodies for a long time to prevent fatigue and injury. At the same time, the current size needs to be adjusted according to the welding materials and working environment to avoid excessive current causing material burns.

Selection and storage of welding materials
Choosing the right welding rod is crucial to ensuring welding quality. The selection of welding rods should be based on welding materials and welding requirements. For example, for HRB335 steel bars, J422 welding rods can be used for welding. Welding rods should be stored in a dry, ventilated place to avoid moisture to ensure that their performance is not affected.

Welding sequence and cooling treatment
Welding should start from the edge and gradually move toward the center. For larger welding areas, welding should be carried out in sections to prevent overheating. After welding, the welding area should be allowed to cool slowly to avoid cracks caused by rapid cooling. Such cooling treatment helps to improve the quality and stability of the welded joint.

Recording and inspection
During the welding process, welding parameters such as current, voltage, welding time, etc. should be recorded for subsequent quality control and problem analysis. After welding is completed, the welding quality should be checked to ensure that it meets the design requirements and quality standards.

Welding skills
Mastering the correct welding skills is also one of the important requirements for welding rods. This includes the correct arc starting method (such as knocking and scratching), the lateral swing of the welding rod, and the control of the feeding speed and welding speed of the welding rod. Different welding positions and weld forms require different wire feeding methods to ensure the quality and appearance of the weld.

In summary, the requirements for welding with welding rods cover safety protection, equipment inspection, operating specifications, welding material selection, welding sequence, cooling treatment, recording and inspection, and welding skills. Only by strictly complying with these requirements can the welding quality and operation safety be guaranteed.