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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
A force F(t) is suddenly applied to a mass m which is supported by a spring with a constant stiffness ‘K'. After a short period of time T, the force is suddenly removed. In the mea
What is maximum shear stress in mechanics of materials ? Derivation for maximum and minimum shear stress seperately.
(a) Explain the procedure of removal for valves. (b) How should one remove valve guide from cylinder head? (c) What is the use of piston side base? (d) What is the use of
When doescortiles componant of acceleration occurs
The Diameter Dimension Command You can use the Diameter command to annotate a circle or an arc with a diameter dimension. To achieve this simply start the command, pick a point
Q. What is Clad plate and overlay welding? Strip back cladding on clad plate a minimum of 5 mm (3/16") from the edges of weld preparation before welding on the backing plate.
Two mating spur gear with module pitch of 6.5 mm have 19 and 47 teeth of 20 degree pressure angle, and 6.5 mm addendum. Evaluate the number of pairs of teeth in contact and the ang
Types in trusses
Q. Explain the Cushion Materials which used in moulding sand? These materials when added to the moulding sand burn and from gases when the molten metal is poured into the mould
Switch Assembly: A switch assembly consists of four rails. The two outer rails are known as the stock rails. The two inner rails are called tongue rails. One stock rail and o
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