ARC Welding

Arc welding is a method that uses an electric arc to produce heat and join metals. Key processes include Stick Welding and Flux Cored Arc Welding (FCAW). This technique utilizes a welding torch and electrodes. It may also involve shielding gas to keep the weld area safe from contamination during coalescence. Additionally, “amperage” measures the … Read more

Arc length, or arc gap, is the distance between the electrode tip and the workpiece in welding. It affects weld quality. Key factors include arc stability, weld current, and workpiece alignment. Keeping the right arc length is essential for effective welding and achieving strong, consistent welds. The importance of arc length extends to the overall … Read more

The Sub Arc Welding Test evaluates skills in submerged arc welding (SAW). It requires a minimum 15-inch weld with a stop and restart. Key attributes include welding speed, arc voltage, and penetration depth. SAW is efficient but works well only in flat or horizontal positions. Understanding these factors is crucial for success. Quality issues can … Read more

To pass an arc welding test, focus on technique and practice. Use 7018 electrodes for strong welds. Control the puddle and ensure proper bead formation. Familiarize yourself with the 3G and 6G welding tests. Review tips from credible sources, and keep your work area free of defects like slag or porosity. The video emphasizes the … Read more

Accredited Testing Facilities (ATFs) and CRAW Approved Testing Centers (ATCs) offer vital services for arc welding certification. They perform destructive and nondestructive testing to ensure welds comply with AWS and ASME codes. OXARC Welding Inspection and ATS enhance the process through expert consultation and advanced testing capabilities. Certification from arc welding testing facilities ensures compliance … Read more

Gas metal arc welding (GMAW) is a key metal joining process widely used in manufacturing. It uses a continuously fed consumable wire electrode. An electrical arc forms between the electrode and the workpiece, melting the metal to create strong welds. GMAW is known for its speed and versatility in various applications. Guidelines for effective GMAW … Read more

Submerged arc welding produces temperatures from 3000 to 20,000 °C. According to the Bartels method, it typically ranges from 7000 to 9000 K. Preheating may be needed for thick materials. This method offers good heating efficiency, effective shielding, and ensures safety while managing welding fumes. However, excessive heat can adversely affect the material properties of … Read more

To arc weld thin sheet metal, set a low amperage and use a thin electrode, such as 6013. Move quickly along the joint to prevent overheating. Form a puddle and let it solidify to avoid burn-through. Use DCEN polarity for shallow penetration. Follow best practices and tips for better results in stick welding. Preparation is … Read more

Arc welding thin wall tubing requires careful heat concentration. Use a 3/32” rod angled at the thicker sections for better results. Focus on techniques like maintaining the correct arc length and reducing drag. Practice on EMT tubing after removing the zinc coating. Proper technique is crucial for creating strong, reliable welds. However, challenges abound in … Read more

TIG welding is a precise method ideal for thin materials. Arc welding creates strong joints and is suitable for thicker materials. TIG is slower but provides better control. Both methods can be used outdoors and underwater, making them versatile for various applications in industries such as construction and manufacturing. The advantages of TIG welding include … Read more