Special submerged arc welding flux for gas cylinders

Overview

SJ-501 is a gray circular granular sintered flux with a particle size range of 10-40 mesh (approximately 2.0-0.45mm) and an alkalinity index of about 0.5-0.93, supporting AC/DC welding.It complies with the AWS A5.17 standard and is usually used in conjunction with welding wires such as H08A, H08MnA, or EM12K to implement single-wire, multi-wire, and multi-pass submerged arc welding (SAW). This flux is insensitive to rust and scale and is suitable for mass production environments.

Main Features

• Active acidic formula: Provides good welding process performance, stable arc, uniform weld formation, and reduces defects such as pores and inclusions.
• Easy slag removal and low spatter: The slag is easy to peel off, and post-welding cleaning is simple, suitable for groove and ramp welding, improving operation efficiency.
• High-speed welding performance: Supports high-speed welding, especially suitable for LPG cylinder production, ensuring smooth weld appearance and structural integrity.
• Multifunctional application: Suitable for welding low-alloy structural steels, such as those used in ships, bridges, and pressure vessels. It particularly demonstrates advantages in pressure resistance and corrosion resistance in LPG storage equipment.

Technical specifications

The role of SJ-501 in the manufacturing of LPG cylinders is particularly prominent: it supports high-speed welding (over 70m/h), significantly improves production efficiency, reduces labor costs, and at the same time ensures that the welds have excellent mechanical properties, such as high tensile strength and impact toughness, meeting the pressure resistance requirements of LPG storage equipment.In LPG scenarios, the advantages of this flux include low spatter and easy slag removal, which reduces post-welding processing time; it is not sensitive to contaminants, making it suitable for mass welding of LPG cylinder bodies and end caps, and improving overall sealing performance and safety.In addition, it can minimize carbon increment, enhance the corrosion resistance of welds, and extend the service life of LPG equipment.