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LOW ALLOY CREEP RESISTING ELECTRODES AND ELECTRODES FOR CRYOGENIC APPLICATIONSThe flux coating contains small amount of alloying elements like Cr, Mo and sometimes V for creep resistance. By addition of these alloys these steels become air hardening and therefore preheating and stress relieving after the welding are a must. The electrodes in this category are known as 5 Cr-½ Mo. For cryogenic applications the addition of Ni 3.5 % is very useful. Such steels can be used u p t o ( i . e ) 5 0° C to - 60 ° C with 2.5 % Ni and upto 100 ° C with 3.5% Ni.
SHIELDING GAS ADVANTAGES Some of the advantages of GMAW process as compared to other arc welding process are as follows: It is a continuous welding process and can
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Assume the production function is given by the following equation (where a and b are positive constants): Q = aL+bK. What is the marginal rate of technical substitution of labor fo
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