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Raw Material Test
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- Physical Inspection for colour and texture
- Particle Size
- Chemical analysis.
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Inprocess Test
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- Particle size by sieve analysis
- Density of slip • Filter cake moisture content
- Extruded blank moisture after drying to leather hard condition
- Random tests for dimensions
- Visual Inspections
- Pre Kiln moisture content tests
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Firing Controls
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- Firing control by automated combustion control systems(Air Fuel ratio, Temperature firing curve)
- Steady pre heating to avoid stresses on the ware
- Long soaking to achieve 100% penetration of heat through out the wall thickness to facilitate proper VITRIFICATION
- Rapid cooling upto 700 degree Celsius
- Slow cooling from 700 to 600 degree Celsius (to facilitate quartz inversion volume change)
- Bringing down to room temperature at a steady rate
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Final Product Tests
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- Dimensional Checks
- Weight
- Water absorption
- Resistance to Acids and Alkalis
- Crushing strengths
- Tests conducted as per ASTM 279C, DIN and Customers specifications
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Quality Norms
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- Quality norms are maintained as per ASTM/DIN/As per Customers specifications
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