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WELDING, CUTTING, AND BRAZING |
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Calcium Silicate |
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Millions of microscopic pores make up the calcium silicate filler. Although
it appears to fill the steel shell, approximately 90 percent of the filler's volume
consists of "pore space" for holding and evenly distributing the
acetylene/acetone solution. When absorbed in this filler, the acetylene is divided into such small units that, should acetylene decomposition take place in one pore, the heat released is not enough to raise the temperature of the acetylene in surrounding pores to the point where it, too, will decompose. Acetylene is usually supplied in cylinders which have a capacity of up to 300 cubic feet of dissolved gas under pressure of 250 psig at 70º F. |
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