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EQUIPMENT FOR RESISTANCE WELDING
The equipment for resistance welding is different from that for arc welding for the following reasons: Resistance welding machines are complicated and very costly. Automation and controls are more in these. Many resistance welding equipments are custom - built. The machines can be operated with single phase or three phase mains. The equipment may be direct energy or stored energy machines. All the resistance welding machines require a low voltage, high current output (current in the order of thousand to lakhs of amperes). Four main constituents are:1. Electrical Power source2. Mechanical system3. Control equipment4. Feeding system
Refractoriness The capability of a material to withstand the action of heat devoid of appreciable deformation of softening is submitted to as refractoriness. Such property is m
give me assinment for Bearing material
Define Electro Discharge Machining In Electro-discharge machining (E.D.M) process the metal is removed from the work piece due to erosion caused by rapidly recurring spark
(a) Describe the terms "Fluid jet" & "Vane" in Fluid Machine. (b) What is impulse - momentum principal in analysis and design of turbo machines. What are the assumptions made
Determine the Wire Drawing - cold drawing processes Similar to above process bars are first pickled, washed and coated to prevent any oxidation. After this rods are passed t
Q. Radiographic examination of welded joints? Radiographic examination (RT) of welded joints shall be performed as required by the Code. Acceptance criteria shall be in accord
Applications. The welding process finds widespread applications in almost all branches of industry and construction. fabrication and creation of steel structures
Determine elongation because of self weight of tapering rod: Sol.: Take a tapering rod hung vertically and firmly fixed at top position. The rod is of length L tapers unifor
Q. What is Squeeze time? It is the time between the initial application of the electrode pressure on the work and the initial application of current to make the weld. During th
Q. Design Storage compounds for bulk solids? Storage compounds for bulk solids, liquids and liquefied gases are normally included in a plant layout to provide short term storag
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