Welders use different welding processes and fillers depending upon the type of metal, its size and shape, and requirements for finished product strength. No-cost training 7-week rotating course Earn OSHA-10 credential Opportunity to apply for Welding Apprenticeship with. In resistance welding, the metal piece itself is melted as current flows through it, and no filler is added. In both arc and gas welding, filler materials are melted and added to fill the joint and make it stronger. In gas welding, such as oxy-acetylene welding, the flame from the combustion of burning gases melts the metal. In electric arc welding, heat is created as an electric current flows through an arc between the tip of the welding electrode and the metal. Welding usually involves applying heat to metal pieces to melt and fuse them together. The programs intention is to encourage apprenticeship training for city residents in order to increase meaningful employment opportunities within the trades. Welders join or sever metals in beams, girders, vessels, piping and other metal components, make metal parts used in construction and manufacturing plants, and weld parts, tools, machines and equipment. The City of Rochester expressed its support of apprenticeship training in October 2003 through ordinance 2003-347, which created an Apprenticeship Program. We currently offer apprenticeship programs in: Pipe Welding, Industrial Electricity, Mechanical Insulation, and Ammonia Refrigeration.
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