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Represent any localised heat affected zone caused by an arc. Arc strike tends to produce hardening particularly in high carbon steels and alloy steels. Grinding of cross section of such arc strike points show without exception, the occurrence of untempered martensite with a very high hardness and often cracks are present. At sudden st resses, at low temperature, these places can easily serve as initiation point for brittle fracture. By giving proper instructions to a welder and by good house keeping this can be avoided. By dressing up the area, the ill effects are removed.
what is turning moment
The rigidly jointed frame shown in Figure has bending stiffnesses such that EI AB = 1000kNm 2 and EI BC = EICD = 1600kNm 2 . (i) Determine the joint rotations at B and C.
Which conducts heat faster steel copper or brass? Ans) Copper conducts heat faster than steel or brass. Any material that is good for conducting heat is also good for electricit
What are the approaches to the design of retaining walls? The approach to the design of retaining walls can be started as follows: a. Chosse a trial dimension of the wall
Q. Illustrate Moisture content test ? Moisture content test: Moisture is an important constituent of moulding sand. Its content in the moulding sand can be estimated as given b
Submerged Arc Welding Single pass filler welds upto (8.0 mm) maximum and groove welds made with a single pass or a single pass each side, may be made using an E7os-x elect
Heat generated uniformly in Stainless steel plate having k=20 W/m. 0 C. The thickness of the plate is 1cm and the heat generation rate is 500 MW/m 3 . If the two sides of the plate
Welding Head Submerged 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 s
Cylinder Bore: The nominal inner diameter of the working cylinder is called the cylinder bore and is designated by the letter D and is usually expressed in millimetre (mm).
Find out the power - hollow shaft: A hollow shaft of internal diameter 400 mm & external diameter 450 mm is needed to transmit power at 120 rpm. Find out the power it may tran
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