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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.
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Illustrate the structure of SET SET allows the exchange of data between different CAD/CAM systems and also between CAD/CAM systems and central data banks. It features a much mo
Construction of steam turbine : CONSTRUCTIO N DETAILS: 1 . Casing: It is made out of cast steel. The casing has rotor inside it. 2 . Rotor: It carries blades o
Explain the uses of Pier and Well Foundations Well foundations are used to transmit large loads from piers of bridges and other marine structures. These are constructions carr
Y ield stress and ultimate stress Yield stress: Yield stress can be defined as lowest stress at which extension of test piece increases without increase in the load. It is
Creep: Creep of rails is the forward movement of rails in the direction of dominant traffic over a period of time. Creep is undesirable because it disturbs the gauge of the t
Multiple Spot Welding This is a modification of spot welding, in which two or more than two welds can be obtained simultaneously from each transformer secondary. For specific pro
Fluid Friction: Fluid friction manifests when the lubricating fluid is introduced between contact surfaces of the two bodies. If thickness of lubricant or oil between the m
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Planning of Railway Stations and Facilities Provided: The planning of railway stations should cover the following aspects: (a) The site selected should be easily ac
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