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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. What do you mean by Shell and Tube Exchangers? Shell and tube exchanger piping shall be arranged to provide clearance overhead at both bonnet and channel ends. Piping shall
bending stress diagram
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necessity of lubrication
TYPES OF WELDING
Calculate and draw the Shear force and Bending moment diagrams for the loaded beam and determine the maximum moment M and its location x from left end.
no passing rule definition
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Beam: Sol.: A beam can be defined as a structural element which has one dimension (length) considerable larger As compared to the other two direction, which is breadth an
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