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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.
Brake Wear Inspection and Free Play Adjustment: Brake wear inspection is very important because worn out brake shoe does not provide good braking. At some point of time they need
ROTARY CONVERTERS Historically, these type of power sources were developed first for arc welding applications and even now these types are popular. These rotary converters are of
Q. High temperature materials in Boilers? A thin refractory layer between the shield and boiler tube is recommended in areas subject to moderate temperatures and levels of corr
Copper And Its Production Copper is marked via a host of good engineering properties. The foremost is copper's good electrical conductivity and bulk of copper is utilized as e
what is soundness of casting.
The corrosion resistance of the austenitic stainless steels (within the concentration and temperature conditions described above) relies on the formation and stability of a passive
Time Dilation The measurement of time involves the concept of clocks attached at each position co-ordinate of a Lorentz frame. As a consequence of Lorentz transformations, it i
What is wave? How many type of the waves?
Q. Selection of Electrodes and Filler Metals? Only low hydrogen electrodes shall be used for SMAW of all carbon and low alloy steels, except for root pass welding of single wel
Q. Flange Assembly with Bolt Tensioning? Measure the free length of the bolts ultrasonically. This must be done prior to applying any load to the bolt. Install bolts on the
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