Methods of Welding Metals Welding is a fabrication process wherein two or more parts are fused together by means of heat, pressure or both forming a join as the parts cool. Welding is typically suited for metals and thermoplastics nevertheless could also be used on wood. A few materials necessitate   Read More »

Welding Consumables Welding sees utility in many different industries which include automobile and transportation, building and construction, power generation, marine and ship building, and oil and gas. The world wide welding consumables market continues to be predicted to experience substantial growth as a consequence of positive outlook of end-use industries   Read More »

Gas Metal Arc Welding The gas metal arc welding (GMAW) process is the dominant welding technique employed currently as being the most widely used joining process associated with the world’s welding fabricators. Notwithstanding its sixty years of track record, research and development continue to deliver advancements for this process, and   Read More »

TIG Welding Gas tungsten arc welding (GTAW) , also referred to as tungsten inert gas (TIG) welding , is an arc welding process which uses a non-consumable tungsten electrode for creating the weld. The weld area and electrode is protected from oxidation and/or other atmospheric contamination using an inert shielding   Read More »

Thermal Spray Welding (Metalizing) The thermal spray process is an umbrella term with regard to multiple processes. Thermal spraying techniques are coating processes wherein melted or heated materials are sprayed onto a surface. The coating precursor called " feedstock " is heated by electrical plasma or arc or chemical means   Read More »

Seam Welding Essentially, seam welding is the foremost technique being used to join two surfaces. Seam welding is the joining of work pieces made of similar or dissimilar materials along a continuous seam. Seam welding can be classified into two principal techniques, resistance seam welding and friction seam welding .   Read More »

Welding Codes, Procedures and Specifications Welding codes are actually developed by a variety of organisations to set requirements for: inspection testing repair approved materials fabrication design specifications welding itself Four groups establish the foundation for the codes. Each group sets and additionally adapts codes which pertain to their area of   Read More »

Imperfections in Welds Whenever imperfections happen to be formed, they are going to be located in either the weld metal or the parent material immediately adjacent to the weld, referred to as the heat affected zone (HAZ) . Considering that the chemical composition of the weld metal is what determines   Read More »

Weldability of Metals and Their Alloys The weldability , also referred to as joinability , of a material represents it's ability to be welded. Several metals and thermoplastics can be welded, however, many are easier to weld as compared to others. A material's weldability is required to determine the welding   Read More »

Welding Defects Welding Defects can be explained as the irregularities formed within the specified weld metal as a consequence of improper welding process or inaccurate welding patterns, and so forth. The defect may vary from the expected weld bead shape, size, and intended quality. Welding defects might arise either outside   Read More »

Weldability of Metal Types Understanding welding metals is one of the pillars of practical knowledge required for a productive welder. Each metal and metal alloy behaves in different ways to heat and in the manner they can be manipulated. Metals expand and soften whenever heated, leading to numerous uses and   Read More »

Welding of Dissimilar Metals There tend to be several applications in which weldments are made from metals involving different compositions. The same is true of a mechanical wear problem, a high-temperature condition, as well as various other types of conditions wherein different properties will be required from different parts of   Read More »

Welding Alloys Selection Guide Welding alloys , also known as filler alloys, are consumables which used during the welding process to fill in the gap between two edges being joined by welding. The welding filler alloy melts into the weld pool along with a portion of the work piece base   Read More »

Welding Electrodes In arc welding, an electrode is used to conduct current through a workpiece to fuse two pieces together. The electrode is a metal wire that is coated to be used for arc welding . It is made out of materials with a similar composition to the metal being   Read More »

Welding Electrode Selection Guide How to select a gas-shielded welding electrode Efficiencies obtained by switching a welding wire or the welding method are typically neglected. Many gas-shielded electrodes , each one with distinct mechanical properties, arc behaviour, and designed applications, are readily available for a range of diverse welding purposes.   Read More »

Metal Cored Welding Wires Their Advantages and Disadvantages Manufacturers nowadays possess a broad selection of options in selecting the best welding approach and consumable to use for a certain application. The various considerations needed for deciding on this involve welder expertise, apparatus, availability of consumables, environmental challenges and economics of   Read More »