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Intermittent motion
Most seam welding machine requirements are met by the use of continuous drive. However, in cases where heavy work parts are to be welded or more than a single weld pulse is required (for example, where it is necessary to apply preheat and quench and temper times or long weld times) intermittent motion must be used in order to retain electrode force over the weld nugget while the weld is being completed. Continuous motion would result in premature release of electrode force and therefore cause cracking, porosity and unacceptable welds. The work travels between the electrodes the distance required for each succeeding weld increment. The work stops during the quench and temper time where it is not required to move the job. The portable welding head is moved by motor driven wheels and air cylinder mechanism provides the electrode force. Standard seam welding machines are classified by throat depth.
Flash Butt Welding This process is an extension of resistance butt welding. The parts to be joined are gripped in the clamps and their interfaces are gradually brought into con
a) What do ypu understand by production Planning and Control Function. Briefly mention the objective of PPC. b) There are 8 job in an auxiliary unit requiring processing on mach
Cylinder Series Test A series of round bars of various diameters are austenitized and quenched into oil or water. The bars are long sufficient hence the cooling of section at
Explain Wilson HArtnell Governor
Force on Rigid body - Non Rigid body: As Rigid body cannot change its shape on application of any force, It will begin moving in the direction of applied force without any
#Our company currently produces the evaporator fins and screen. Production is planned to flow parallel evaporator. In this case we need more information.#
Q. Corrosion resistance of tantalum? Tantalum is readily attacked by strong alkalis, even at room temperature, and therefore, is not suitable for use in processes where the pH
velocity of belt: velocity of belt passing over the driver pulley will decrease Now with this velocity belt pass over driven pulley, Now Velocity of Driven = Velocity
used of Wilson ha rtnell governor
The 13ft long beam
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