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Lab talk, the good, the bad, and the ugly
Metal
Up charge on alloy's....
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<blockquote data-quote="dmonwaxa" data-source="post: 164019" data-attributes="member: 927"><p>For ex lets assume:</p><p> </p><p>Alloy wt prior to melting =15.7</p><p>button after casting =15.3</p><p>(casting loss = .4)</p><p>button prior to despruing =15.3</p><p>button after despruing =6.8</p><p>desprued castings weight =7.9</p><p>button + castings (6.8 + 7.9) =14.7</p><p>despruing loss=(init wt -casting loss -button - castings)(15.7 -.4 -6.8 -7.9)= .6</p><p>Total loss = 1.0g</p><p> </p><p>or another way = init wt - (casting loss + despruing loss + castings wt)</p><p> = 15.7 - ( .4 + .6 +7.9)</p><p> = 15.7 - (8.9)</p><p>button wt (on hand) = 6.8 g </p><p>Alloy used for castings= init alloy wt -button wt(15.7-6.8) =8.9</p><p> </p><p>bottom 2 lines should add up to initial wt</p></blockquote><p></p>
[QUOTE="dmonwaxa, post: 164019, member: 927"] For ex lets assume: Alloy wt prior to melting =15.7 button after casting =15.3 (casting loss = .4) button prior to despruing =15.3 button after despruing =6.8 desprued castings weight =7.9 button + castings (6.8 + 7.9) =14.7 despruing loss=(init wt -casting loss -button - castings)(15.7 -.4 -6.8 -7.9)= .6 Total loss = 1.0g or another way = init wt - (casting loss + despruing loss + castings wt) = 15.7 - ( .4 + .6 +7.9) = 15.7 - (8.9) button wt (on hand) = 6.8 g Alloy used for castings= init alloy wt -button wt(15.7-6.8) =8.9 bottom 2 lines should add up to initial wt [/QUOTE]
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Lab talk, the good, the bad, and the ugly
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Up charge on alloy's....
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