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Lab talk, the good, the bad, and the ugly
Porcelain
inline cracking
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<blockquote data-quote="amadent" data-source="post: 76482" data-attributes="member: 1742"><p>here is my inline procedure- i never have any cracking or delaminateing issues ( any more)</p><p>sanblast metal to manufactures specs- clean in ultra sonic 5 minutes- degas metal- </p><p>( inline paste opaque)</p><p>run a 1st wash opaque ( very light) 950' centergrade , 1st opaque high temp 940'c, 2nd opaque 930'c</p><p>build up in-line with ips empress esthic veneer liquid with about 15% distilled water </p><p>found using straight liquid it got lifting and some steam tearing in porcelain</p><p>1st fire is </p><p>start temp 403'c</p><p>close time 4 min</p><p>heat rate 60' per min</p><p>high temp 910'c</p><p>hold time 1 min</p><p>open time 1 min</p><p>start vac 450'c</p><p>release vac 909'c</p><p>2nd fire is the same except high temp is down to 902'c</p><p>3rd bake if needed is down to 895'c high temp</p><p></p><p>Greg Amendola MDT</p></blockquote><p></p>
[QUOTE="amadent, post: 76482, member: 1742"] here is my inline procedure- i never have any cracking or delaminateing issues ( any more) sanblast metal to manufactures specs- clean in ultra sonic 5 minutes- degas metal- ( inline paste opaque) run a 1st wash opaque ( very light) 950' centergrade , 1st opaque high temp 940'c, 2nd opaque 930'c build up in-line with ips empress esthic veneer liquid with about 15% distilled water found using straight liquid it got lifting and some steam tearing in porcelain 1st fire is start temp 403'c close time 4 min heat rate 60' per min high temp 910'c hold time 1 min open time 1 min start vac 450'c release vac 909'c 2nd fire is the same except high temp is down to 902'c 3rd bake if needed is down to 895'c high temp Greg Amendola MDT [/QUOTE]
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Lab talk, the good, the bad, and the ugly
Porcelain
inline cracking
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