types of welding techniques

types of welding techniques and process

what are the 4 types of welding? In an oil and gas plant, we can see a thousand pieces of equipment that joined by many types of welding process. A piece of mechanical equipment (pipeline, tank, pressure vessel) is a collection of several metal components which are joined together into one unit. The joining methods can broadly be classified into three categories by the joining mechanism: mechanical joining by means of such mechanical methods as riveting and bolting adhesive bonding by using glues or plastics welding by means of metallurgical bonding. a Welding can be defined as “the operation that[…]

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gtaw welding definition

The effect of welding flame heating on the weld structure and the weld heat affected zone

weld heat affected Zone The welded joint can be divided into three main zones having different micro structures: base metal zone; heat affected zone; and a weld seam weld zone. In gas welding, due to slow heating , the heat affected zone (near- heat zone) is larger than in the case of arc welding . The thermal influence zone has several structural sections caused by the heating temperature in the range of 450-1500 ° C and differing in the shape and structure of the grain. The thermal influence zone consists of the following sections: incomplete fusion overheating normalization incomplete re-crystallization[…]

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CSWIP 3.0 Visual Welding Inspector exam and training

CSWIP 3.0 TWI Visual Welding Inspectors Course and exam guideline

Certification for welding inspector course During the fabrication process of equipment, we often encounter the welding process. Welding inspector officers have the duty to maintain welding quality. This QA / QC process starts from weld preparation, weld process and after welding. The welding inspector has several kinds of certifications. For Europe, we are familiar with welding inspectors CSWIP 3.0 and CSWIP 3.1. In November 2019, I took part in the training and examination of the CSWIP 3.0 Welding Inspector certification in addition to my previous competence, which was a certified welding engineer. The CSWIP 3.0 Visual Welding Inspector course is[…]

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arc welding basics

understanding arc welding basics and type of arc welding

Arc Welding Welding can be defined as “the operation that produces coalescence of two or more members by applying heats or pressure or both, with or without the use of filler metal” . Welding (Metallurgical joining) can further be classified by the joining mechanism into 4 groups : Fusion welding ( can be referred to as welding in the narrow sense), solid phase joining (pressure welding), diffusion welding and joining by liquid-solid phase reaction (Brazing & soldering). Fusion welding consist of 5 categories : gas welding, arc welding, electroslag welding , thermite welding and high energy beam welding (electron beam[…]

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