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Introduction to Steel Fabrication Process for Structures
Steel Fabrication process is the process of grinding, cutting, welding, bending, burning, drilling, punching and generally crafting various steel detail components described in the detail drawings. It is a systematic process and every step is necessary and important.
The process begins with coordinating the first steel to be fabricated with the steel stock. Material handling laborers ensure that the fitters have the exact steel inventory at different fitting stations when the steel is required. In tandem, template makers create disposable cardboard-like templates used for cutting steel. These templates take the guesswork out of the shop worker’s hands. They just fabricate the steel to match the template and an accurate steel detail piece is produced.
With the correct steel at their site and templates in hand, the fitters start the process of producing detail pieces. After this a separate welding crew fastens a series of detail pieces together to construct the shipping pieces or assemblies. There are many methods used in welding metal together.
There are two most common welding processes – arc welding and gas welding. Gas welding is a process in which heat is generated with an electric arc formed between a metal electrode & the metal being welded. An inert gas, typically helium or argon protects the arc from contamination. General gas techniques are TIG (tungsten-inert-gas) and MIG (metal-inert-gas) welding.
Carbon arc welding is a puddling process in which the heat from an electric arc generates a small pool of molten metal that can be added to using metal from a filler rod. This is commonly referred to as stick welding. Welding techniques for field erection of steel or shop fabrication are similar.
After the fabricated assembly is transported to the site, the only work remaining is unloading, sorting, storage and erection.
For any queries related to erection and detail drawings email us at [email protected]
Visit us at http://www.cadoutsourcingservices.com/structural-steel-detailing-design.php for more information.
About the Author
Richard Bothom is structural engineer at CAD Outsourcing – an India based professional structural steel design and detailing consultant offering full services such as shop drawings, fabrication drawings, steel detailing at affordable rates. [email protected]; http://www.cadoutsourcingservices.com