Daniel Ahasic is a longtime Illinois paramedic and firefighter who has been a member of the Aurora Fire Department for nearly two decades. An avid photographer, Daniel Ahasic also enjoys metal work projects involving welding in his free time.
Part of fabrication, which is the overarching process of designing, forming, and finishing a metal piece, welding involves joining pieces of two materials that have similar compositions and melting points. The materials utilized in this heat-based process can also include thermoplastics and glass. With metal-based welding, there are two major processes: solid-state and fusion. The latter first involves the heating of two metal parts, which are then fused into a joined piece through the use of a filler. By contrast, solid-state welding and metal-joining techniques do not utilize any additive. The most common method used is shielded metal arc welding (SMAW, or stick welding), a fusion technique that employs consumable welding rods as filler. An electric current is also run through the surfaces being joined. The most refined welding process is tungsten inert gas welding (TIG), which employs a non-consumable tungsten electrode in forming the connection between materials.
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AuthorDaniel Ahasic - Emergency Services at Aurora Fire Department Archives
April 2022
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