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Lab talk, the good, the bad, and the ugly
All Porcelain-Press
pitting in emax press
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<blockquote data-quote="Zubler USA" data-source="post: 77498" data-attributes="member: 6881"><p>Time & temperature. I would check both the pressing oven and burnout ovens. <img src="/forums/images/smilies/test/burnout.gif" class="smilie" loading="lazy" alt="Burnout" title="Burnout Burnout" data-shortname="Burnout" /> ovens are notoriousely innacurate because of the type of thermocouple they use, and the contamination they are exposed to. However, you might want to ask how long your pressing time is. How fast you cool down. Are you using disposable plungers or alox. alox plungers can add reaction layer because they are much more dense than disposable. They keep the ring in the oven longer, because they take longer to heat up, then they continue to heat the ring when it is removed from the oven. Just a thought.</p></blockquote><p></p>
[QUOTE="Zubler USA, post: 77498, member: 6881"] Time & temperature. I would check both the pressing oven and burnout ovens. Burnout ovens are notoriousely innacurate because of the type of thermocouple they use, and the contamination they are exposed to. However, you might want to ask how long your pressing time is. How fast you cool down. Are you using disposable plungers or alox. alox plungers can add reaction layer because they are much more dense than disposable. They keep the ring in the oven longer, because they take longer to heat up, then they continue to heat the ring when it is removed from the oven. Just a thought. [/QUOTE]
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Lab talk, the good, the bad, and the ugly
All Porcelain-Press
pitting in emax press
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