Things to note when using welding rods

Drying of welding rods: Before use, welding rods are generally dried. Acidic welding rods should be dried at 75-150°C for 1-2 hours depending on the moisture situation; alkaline low-hydrogen structural steel welding rods should be dried at 350-400°C for 1-2 hours. The dried welding rods should be placed in a 100-150°C insulation box (cylinder) and taken out as needed. Keep them dry when using them.

Storage of welding rods: When operating in the open air overnight, the welding rods must be properly kept. Open air storage is not allowed. They should be kept at a constant temperature in a low-temperature oven, otherwise they will need to be dried again before use the next day.

Use of welding rods: The welding rods should be kept dry when used. Titanium calcium type should be dried at 150°C for 1 hour, and low hydrogen type should be dried at 200-250°C for 1 hour (do not dry repeatedly, otherwise the coating will easily crack and peel off). Prevent the welding rod coating from sticking oil and other dirt to avoid increasing the carbon content of the weld and affecting the quality of the weldment.

Safety during welding: During welding, the welding process should be protected from wind, snow and rain, otherwise welding should be stopped. After each weld is completed, an appearance inspection should be carried out. If defects such as pores, slag inclusions, and weld nodules are found, the defects should be scraped or planed off and then repaired.

Control of welding quality: The thickness of each layer of weld should be 0.8~1.2d (d is the diameter of the welding rod). When replacing welding rods, the joints between layers should be staggered. When double-sided welding, after welding on the front side, use an air shovel or carbon arc air gouging to remove the incomplete welding and slag on the back side, and grind it with a grinding wheel or brush it with a wire brush before welding.

Preparation of welding environment: Before welding, rust, oil stains, etc. should be cleaned at the weld. For assembled weldments, if the groove gap is too large but cannot be repaired, it is not allowed to clamp iron bars and other objects inside. It should be welded from both sides of the weld before welding.

The above are some precautions when using welding rods. I hope it will be helpful to you. Our welding rods are here.