Instructions for Use of Non-alloy Steel and Fine-Grained Steel Electrodes

Non-alloy steel and fine-grained steel electrodes (the tensile strength of the deposited metal is less than 570MPa) are used for the welding of carbon steel and low-alloy steel.

Non-alloy steel and fine-grained steel electrodes (the tensile strength of the deposited metal is less than 570MPa) are used for the welding of carbon steel and low-alloy steel.

When selecting welding rods, it is usually based on the requirements of the chemical composition, mechanical properties and crack resistance of the steel, and at the same time, the shape of the welding structure, working conditions, stress conditions and the performance of welding equipment must be considered. If necessary, after the welding test, the process measures should be determined, and then the welding rod should be determined. Low-hydrogen electrodes are usually required for good metal plasticity, high impact toughness and good crack resistance. Those who have special requirements for the welding position can choose the corresponding special electrode, such as iron powder electrode in order to improve the welding efficiency, etc.

Stainless Steel Welding Electrode

For low-hydrogen, iron powder electrodes, the electrodes must be baked at more than 350 °C before welding, and the principle of using as much as possible can be used as much as possible, otherwise welding defects (such as porosity, slag inclusion, cracks, deterioration of process performance, etc.) will occur. For cellulose electrodes, they should be baked in strict accordance with the baking temperature specified in the instructions, because if the temperature is too high, the cellulose in the coating will be burned and the inherent process performance of the electrode will be destroyed.

When using low-hydrogen electrodes, the welder should be in the upwind position to strengthen the exhaust air and prevent the harm of welding fumes to the body.

For low-hydrogen electrodes, the number of baking should not exceed twice as much as possible to prevent the coating from becoming brittle and falling off.