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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.
The Bronzes The coinage bronze employed for making coins in earlier days contains 95% copper, 4% Sn and 1 % Zn. The Zn acts as a deoxidizer. Such alloy is soft and ductile.
An engine uses air as the operating substance. At the beginning of compression the pressure is 90 KN /m 2 and the temp. is 40 0 C. During the adiabatic compression, the volume is
Calculate Heat transfer through cylinder wall: Calculate change in entropy and heat transfer through cylinder walls, if 0.4m 3 o f a gas at the pressure of 10bar and 20
law of belting
Use of hartung governor
CAPP for Forming Processes Sheet metal parts are produced from flat sheets on presses using special metal forming dies. Process planning for sheet metal parts involves complex
define thormodynamics and its laws
What are relevant design considerations? The relevant design considerations may be summarized as follows: a. Main reinforcement (uniformly distributed) is placed in a longit
Half-space Method Solid representation is based fundamentally on the notion that a physical object divides an n-dimensional space E n into two regions: interior and exterior,
Q. Explain about Fired Heaters and Combustion Engines? Fired heaters and combustion engines shall normally be located at a safe distance from hazardous areas as they provide po
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