According to the test results, it seems that the optical quality is better with long oscillation, but there is more edge lift! Why - could you please give your comments.
I did these tempering tests in May. My idea was to find out if there is a difference in quality depending to the oscillation length during the heating period. The quality measurements were done in Germany with Viprotron’s brand new / precise Distortion Technology. This quality measurement can measure the edge lift of the glass right at the edge, but in practice it is good to do it 2-3 mm from the edge depending on the type of edge grinding.
In this test, we measured all kinds of distortions such as roller wave & edge kink/lift, anisotropy, white haze, scratches, coating defects, etc. Thank you Viprotron GmbH, especially to "Ms. Quality" Sandra Kugler and Kai Vogel for supporting this study and measuring these test glasses with the Temper Scanner 5D. For further information, please visit the Viprotron GmbH stand at the glasstec – International Trade Fair fair, Hall 14 / E39.
The exit temperature of the glass is important to know for a good optical quality and it was measured from the bottom surface. The measurement was made with an optical bottom scanner from Optris GmbH – thank you Optris and Ingo Stahlkopf. For further information, please visit the Optris stand at the glasstec – International Trade Fair fair, Hall 14 / F14.
Many specialists know that optical quality improves when the oscillation is long, but this issue of edge lift was interesting. Anyway, we need more tests to see how it behaves in full production.
The downside of long oscillation is that it reduces capacity and affects energy consumption. And overall, we also need to think about how to find a balance between quality, price, capacity and customer satisfaction.
Let's meet all the old foxes and younger experts at glasstec and continue the discussion on what glass means to all of us 😊 jorma
#tempering #temperedscanner #distortion #rollerwave #edgekink #anisotropy #whitehaze #scratches #coatingdefects #measurement #exittemperature #opticalscanner #bottomsurface #glasstemperature
Quality Engineer at Cardinal IG Technology Center
4moGreat Jessi Mages ! This looks very interesting. Best of luck.