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Lab talk, the good, the bad, and the ugly
Zirconium
Zirconia Opaqueness & Shade Issues
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<blockquote data-quote="kristian" data-source="post: 264305" data-attributes="member: 7807"><p>They're running on 220. Hold times are 2 hours.</p><p></p><p>This setup was working fine for years with no issues, which makes it puzzling. I can't pinpoint to anything substantial that would have changed.</p><p></p><p>As for temps, I re-checked on more runs (I must have made measuring mistakes before or used faulty rings) - all started from close to room temperature - and I now have:</p><ul> <li data-xf-list-type="ul">Bottom layer 15-20°C lower than the middle layer</li> <li data-xf-list-type="ul">Middle layer on target</li> <li data-xf-list-type="ul">Top layer < 5°C above the middle layer</li> </ul><p>These measurements seem to be consistent between runs and between furnaces.</p></blockquote><p></p>
[QUOTE="kristian, post: 264305, member: 7807"] They're running on 220. Hold times are 2 hours. This setup was working fine for years with no issues, which makes it puzzling. I can't pinpoint to anything substantial that would have changed. As for temps, I re-checked on more runs (I must have made measuring mistakes before or used faulty rings) - all started from close to room temperature - and I now have: [LIST] [*]Bottom layer 15-20°C lower than the middle layer [*]Middle layer on target [*]Top layer < 5°C above the middle layer [/LIST] These measurements seem to be consistent between runs and between furnaces. [/QUOTE]
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Lab talk, the good, the bad, and the ugly
Zirconium
Zirconia Opaqueness & Shade Issues
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