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Welding HeadSubmerged arc welding head consists of the wire spool, wire feed system, flux delivery hopper and electrical contact nozzle. The electrode wire is unwound from the spool by the power driven rolls, straightened by a set of pressure rolls and fed through the contact nozzle into the weld pool. The drive for wire feed is from a motor with speed control provided either by means of a gear box or by means of thyristor controls.
Q. Corrosion resistance of Zirconium? Zirconium offers excellent corrosion resistance to most oxidizing and reducing acids and virtually all alkalis. However, it is not resist
In an orthogonal cutting test with a tool of rake angle 10 degree , the following observations were made. 20 Chip thickness ratio = 0.3 Width of cut = 6mm Uncut chip thicknes
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Compressio n Ignition Engines (or C.I. Engine): It works on the basis of dieses cycle. In diesel engines, energy addition occurs at constant pressure but energy rejection at
Plant layouts shall provide for a maximum of safety and exposure protection from the spread of fire, with ease of operation and maintenance consistent with economical design. Requi
Clearly indicate fire dampers on ducts penetrating fire rated partitions, equipment rooms, duct shafts, ceiling outlets, etc. Detail fire dampers on drawings if required. For
A thin spanwise symmetrical wing has an aspect ratio of 10 and a straight edges with taper ratio (tip chord / root chord) of 0.8 and root chord of 1 m. This wing does not have geo
Q. What do you understand by Carburization? Carburization is initiated by the adsorption of carbon in contact with the surface of the metal and may progress by diffusion along
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Two concentric perforared plates are seperated by a 200mm launder and form the flow exit for a clarifier (figure 1). The inlet water flow of 1200 mcubed/hour into the clarifier is
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