Tariqul

Code arc welding for boilers adheres to the ASME Boiler and Pressure Vessel Code, particularly Section IX. It sets standards for welding qualifications. Relevant standards include AWS A5.18 and API Std 1104. Coded welders must meet strict criteria to ensure weld integrity in pressure vessel applications, promoting safety and durability. Welders must be certified, adhering … Read more

Cold Metal Transfer (CMT) is a modified gas metal arc welding (GMAW) technique created by Fronius in 2004. CMT uses a short-circuit transfer process to lower heat input and reduce spatter. This results in better tensile performance and high-quality welds. CMT is ideal for various applications, including wire-arc additive manufacturing. CMAW finds applications in automotive, … Read more

Cold wire submerged arc welding (CWF) is a method that adds tubular or solid filler metal to a molten weld pool. This process boosts metal deposition while reducing welding current. CWF is efficient and widely used across many applications. It enhances the quality and productivity of welding operations, making it a preferred choice in the … Read more

The color temperature of arc welding ranges from 3,000°C to 20,000°C. The arc shows colors like chrome, gold, blue, and purple, which indicate different temperatures. In flux core welding, it often appears white or orange-pink due to sodium compounds. For best visibility, use lighting with a color temperature between 5,500 K and 7,500 K. The … Read more

Column and boom submerged arc welding (SAW) involves a large wire that melts under flux, leading to high deposition rates. This semi-automatic process enhances efficiency and productivity. It offers versatility, enabling controlled welding for pipes and tanks across various industry applications. The submerged arc process involves covering the weld with a granular flux, which protects … Read more

Shielded Metal Arc Welding (SMAW) is widely used in construction, pipelines, shipbuilding, and automotive manufacturing. It effectively welds thick materials and various metals, such as steel and aluminum. SMAW is crucial for repairs and maintenance in many industries, making it a versatile choice for industrial fabrication. The advantages of Shielded Metal Arc Welding are numerous. … Read more

Common welding defects in arc welding include cracks, slag inclusions, porosity, undercut, spatter, and overlap. You can repair these defects by grinding or chipping the damaged area, then rewelding using effective methods. Taking proper precautions helps improve overall welding quality and reduces the likelihood of defects. The causes of these defects vary. They may stem … Read more

DC electric arc welding uses a stable direct current, reducing defects such as spatter and porosity. In contrast, AC electric arc welding uses alternating current, leading to variable polarity. Generally, DC welding is preferred for most jobs due to its efficiency and cleaner results, while AC welding is useful for certain specific applications. AC welding … Read more

CO2 welding differs from arc welding in several ways. CO2 welding is more efficient and cost-effective. It suits automatic processes better, especially with robotic welding. These features make CO2 welding advantageous for specific applications. Understanding these differences helps in choosing the right welding method. On the other hand, arc welding employs an electric arc to … Read more

Carbon arc welding has two main types: single arc welding and twin arc welding. A single arc welder creates an arc between one electrode and the workpiece. A twin arc welder uses two electrodes, allowing the workpiece to remain electrically isolated. Each type serves different welding needs effectively. The processes involved in carbon arc welding … Read more