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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.
Q. Formed heads of vessels? Formed heads are generally of 2:1 semi ellipsoidal form, but other heads may be used, such as hemispherical, torispherical, conical and toriconical.
Q. What is Auto-Ignition Temperature? Auto-Ignition Temperature (AIT) - The auto-ignition temperature is the temperature at which a product will burn without application of any
How are fuels divided ? Write disadvantages and advantages of each types. (b) A sample of coal supplied to a boiler has the following composition by mass : Carbon = 88%, Hydr
Following data is provided for a 360 o hydrodynamic bearing : Radial load = 3.2 kN journal Speed =1490 rpm journal diameter = 50 mm bearing length = 50 mm radial cl
Explain frequency reuse In the cellular concept, service area is separated into regions called cells and the available frequency is divided among these cells. Every cellular b
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Classification of welding Based on Mode of Energy Transfer Energy is converted from one form to another. Any form of energy can be converted to heat energy, which can be used f
Q. Process of Alloy Materials Sampling? The following alloy-materials require a minimum of 10% per lot representative PMI sampling. If any incorrect material is found in repres
WHAT IS LOAD CARRYING CAPACITY ISMB 250 OF 1.2 MTR LENGTH. PL REPLY
For Elevated Temperatures, Other Materials High temperature creep is a significant phenomenon to be guarded in various machines like gas turbines, missiles, reentry vehicles a
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