GAS METAL ARC WELDING: Beginner (Book with DVD) (Workbook Included)

Gas Metal Arc Welding: Beginner comprehends various diverse practical and visual skills with knowledge of specialized materials and techniques. Gas metal arc welding (GMAW), sometimes referred to by its subtypes, metal inert gas welding or metal active gas welding, is a semi-automatic or automatic arc welding process in which a continuous and consumable wire electrode and a shielding gas are fed through a welding gun. A constant voltage, direct current power source is most commonly used with GMAW, but constant current systems, as well as alternating current, can be used. This book will introduce the knowledge and skills for those studying and/or working in welding industry to interpret and convey information in response to workplace requirements.

About this Book

The information in this book consists of competencies that a person must achieve to perform gas welding in alloy steel plates and tubes components as specified by layout, blueprints, diagrams, work order, welding procedure or oral instructions using Gas Welding equipment.

About the Gas Metal Arc Welding Industry

Anything made of metal, no matter how big or small, can be welded. Examples are everywhere, from vehicles like cars, trucks and motorcycles to rail cars, ships, aircraft, rockets and space stations. Construction is a huge market, and skyscrapers, bridges and highways would be impossible to build without welding, as would oil and natural-gas pipelines, offshore oil platforms, giant wind turbines and solar panels. Welders help install and maintain boilers, antipollution systems and other large structures, as well as piping for industrial, commercial and residential facilities. Welding is even used by artists to create sculptures and decorative items. Gas metal arc welding, commonly referred to as (GMAW), is an automatic or semi-automatic welding process. Shielding gas and a continuous, consumable wire electrode are fed through a welding gun. GMAW uses a constant power source such as voltage or a direct current to weld together materials such as steel and aluminum. GMAW is popular in industries such as car manufacturing due to its speed and versatility. GMAW was first developed at the turn of the 19th century, when carbon were used. GMAW is widely used by the sheet metal industry. Arc spot welding has replaced resistance or rivet welding. It is also used in robot welding, in which robots operate the welding gun and the sheet metal in order to save on time and cost. GMAW is not generally suitable for outdoor use, as changes in the atmosphere can cause the shielding gas to dissipate and the quality of the weld to be inferior. It is also unsuitable for underwater welding for the same reasons. There is also a certain level of skill required for gas welding, to ensure that the weld is flawlessly done. A job as a Gas Welder falls under the broader career category of Welders, Cutters, and Welder Fitters. Welders operate and maintain the machines that fabricate and repair metal structures, equipment and machinery. Welders are qualified for positions in a variety of fields based on their skill level and experience, including shipbuilding, automotive, construction and manufacturing industries. Opportunities are expected to be better for skilled welders trained in the latest technologies due to the difficulty employers are facing finding qualified workers.