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Lab talk, the good, the bad, and the ugly
Equipment
Casting torches, Which ones are best?
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<blockquote data-quote="Bobby Orr ceramics" data-source="post: 60125" data-attributes="member: 3076"><p>don't touch acetylene. It's like fertilizer from a farmers field. </p><p></p><p>Propane very intense in heat......melts alloy like a convection oven. Easy to burn the the turkey on the outside, yet raw on the inside......risking burning trace elements.</p><p></p><p>Natural gas is best for overall volume heat......best for even melting and preserving trace elements...... for base alloys you MUST crank the oxygen so the torch sounds like a jet engine. </p><p></p><p>When you melt a high-palladium alloy, it's best to use natural gas because the palladium sucks up hydrocarbons like a cocaine addict with white powder.......propane is very high in hydrocarbons......if you are getting bubbles on a high palladium alloy and you're melting it with a propane torch......dangerous for contamination. There's no metal finishing or oxidizing cycle that will fix it when it's already impregnated into the casting.</p><p></p><p>Talladium has an awesome multi-orfice tip torch that we use for base or noble alloys.</p></blockquote><p></p>
[QUOTE="Bobby Orr ceramics, post: 60125, member: 3076"] don't touch acetylene. It's like fertilizer from a farmers field. Propane very intense in heat......melts alloy like a convection oven. Easy to burn the the turkey on the outside, yet raw on the inside......risking burning trace elements. Natural gas is best for overall volume heat......best for even melting and preserving trace elements...... for base alloys you MUST crank the oxygen so the torch sounds like a jet engine. When you melt a high-palladium alloy, it's best to use natural gas because the palladium sucks up hydrocarbons like a cocaine addict with white powder.......propane is very high in hydrocarbons......if you are getting bubbles on a high palladium alloy and you're melting it with a propane torch......dangerous for contamination. There's no metal finishing or oxidizing cycle that will fix it when it's already impregnated into the casting. Talladium has an awesome multi-orfice tip torch that we use for base or noble alloys. [/QUOTE]
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Lab talk, the good, the bad, and the ugly
Equipment
Casting torches, Which ones are best?
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