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Gas-shielded arc welding processes Just like submerged-arc welding, gas-shielded arc welding is also an electric fusion process. The weld is produced by electric arcs. The arc is most notable as it burns between the electrode and work-piece. This means that the arc, electrode, and weld pool are all protected from the atmosphere by shield or inert protective gas which is constantly being fed into the atmosphere during this process. This process and others alike are classified

The Main Purpose of cold working processes are to achieve closer wall thickness and diameter tolerances, an improved surface finish and specific mechanical properties in the tubing. These processes also serve to expand product mix toward lower ends of the OD and wall thickness scale. Cold Drawing Three Processes employed by Cold Drawing of Tubes: Hollow Drawing, Stationary or floating plug drawing, and drawing over a mandrel (Drawing on the bar). Because the lack of tools in

Leaky steel tubing can be the beginning of the end for efficient heat transfer. Although many stainless steel coils may fail for a variety of reasons, mechanical failure and corrosion are the culprits in the majority of cases. When steel coils corrode, unwanted precipitation and contaminants may foul the air stream or exhaust gases. Steam can leak from a badly corroded coil simply blowing precious energy off into the atmosphere. External corrosion is when one or more contamin

Welded Tubing: These stainless steel tubes start at the melting operation where special requirements on the alloy are placed to facilitate welding. The strip from which the stainless tube is made may be supplied to the manufacturer as either a hot or cold rolled coil. Cold rolled strip tubing has the advantage of extremely close tolerances, smooth surface finish and great mechanical properties. These coils are slit into precise widths and then, put through a sequence of proce

Electrolytic or Stray Current Corrosion Stray current corrosion occurs when metal with an electrical current flowing into it is immersed in water grounded in nature. The current can leave the metal and flow through the water to the natural ground. This will cause rapid corrosion of the metal at the point where the current leaves. Stray direct current (or battery current) is particularly destructive. Stray current corrosion can cause rapid deterioration. If the metal in questi