•The secret to cool bodies and glazes is a lot of testing.
•The secret to know what to test is material and chemistry knowledge.
•The secret to learning from testing is documentation.
•The place to test, do the chemistry and document is an account at https://insight-live.com
•The place to get the knowledge is https://digitalfire.com
Heating Microscope Analysis for Frits - HMA
This test procedure was employed in the Foresight Ceramic Database and now is available for those having an account at Insight-Live.com.
Accumulating test data using the variables defined in these procedures enables us to create tools that enable you to compare the physical properties of materials and recipes.
Information found at http://www.reimbold-und-strick.de/
This test is important in the assessment of materials for use in glass ceramics. The heating microscope describes the melting of frits during the heating process. A cube of 3x3x3 mm is pressed of fine ground frit, is heated at 30 - 40°C/min (others specify 10°C/min) to 1400C. During this process characteristics of the silhouette are recorded. These observations can be interpreted differently by different people.
For frits, it is more common to interpret a glass transition (transformation) point and softening point by interpreting the curve produced by a dilatometer.
SP - Sintering Point (V)
At this temperature the height of the cylinder shrinks by 5%, also referred to as transformation point.
EP - Softening Point (V)
The beginning of softening: The temperature at which the corners show rounding.
K - Ball Point (V)
At this temperature the silhouette is similar to a sphere.
HK - Half-ball Point (V)
Temperature at which the height is half of the base. Interpreted at the melting temperature.
F - Liquid Point (V)
The sample has melted to 1/3 of its original height.
Out Bound Links
In Bound Links
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