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SHIELDING GASES
Shielding gas is directed by the torch to the arc and weld pool to protect the electrode and the molten weld metal from atmospheric contamination.
Argon and helium or mixtures of the two are the most common types of inert gas used for the shielding. Argon hydrogen mixtures are used for special applications.
Q. Local Stresses? Local stresses in the vessel shell/head/skirt/base rings from the lifting attachments (such as lugs, trunnions, etc.), shall be determined for the imposed lo
Carbides Carbides of titanium, zirconium, boron and silicon are significant refractory materials. Though, the carbides have extremely high melting points so they lack oxidatio
you are to produce a working design for the fan, motor, belt system. You are to produce an assembly model and other such drawings as are necessary to explain your design together w
Let B be the number of bicycles formed from F bicycle frames and T tires. Each bicycle require exactly two tires and one frame. a. Sketch the isoquants for bicycle production.
During a test on a Lister engine in a thermal laboratory, following parameters were measured; crank shaft speed=1,750rpm Load on dynamometer=220N Radius of dynamometer=1.5m Fuel co
Clearly indicate fire dampers on ducts penetrating fire rated partitions, equipment rooms, duct shafts, ceiling outlets, etc. Detail fire dampers on drawings if required. For
Explain lami's theorem: Sol.: Lami's theorem states that "If the three coplanar forces which are acting at a point be in equilibrium, then every force is proportional to sin
Q. Why we need additives explain? Additives are the materials added in small quantities to the moulding sand in order to enhance its exiting properties and to impart to it spec
METAL TRANSFER IN CO2 WELDING In CO 2 welding, two distinct types of metal transfers are identified viz. short circuiting transfer and free flight globular transfer. Short Cir
Loose piece pattern This type of pattern is also used when the contour of the part is such that withdrawing the pattern from the mould is not possible. Hence during moulding th
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