Page 83 - CITS - Welder - Trade Theory
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WELDER - CITS
a Pith from corm stalk
b Fullers earth
c Lime silica
d Specially prepared charcoal
e Fiber asbestos.
Fig 3
Fig 4
The hydro carbon liquid named acetone is then charged in the cylinder, which fills the porous substances (1/3rd
of total volume of the cylinder). Acetylene gas is then charged in the cylinder, under a pressure of app.15kg/cm2.
The liquid acetone dissolves the acetylene gas in large quantity as safe storage medium: hence, it is called
dissolved acetylene. One volume of liquid acetone can dissolve 25 volumes of acetylene gas under normal
atmospheric pressure and temperature. During the gas charging operation one volume of liquid acetone dissolves
25X15=375 volumes of acetylene gas under 15kg/cm2 pressure at normal temperature. While charging cold
water will be sprayed over the cylinder so that the temperature inside the cylinder does not cross certain limit.
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CITS : C G & M - Welder - Lesson 14-26 CITS : C G & M - Welder - Lesson 14-26
