Quality

Water Absorbtion - Water absorption is of particular interest in the ceramic packing as it indicates the degree of firing and vitreousity of the packing material.

Resistance to Acid - Acid resistance indicates the resistance or the solubility of the material subjected to the attack of concentrated acid.

Crushing Strength - Crushing strength is the load required to break the packing. In Ceramic rings it is applied diametrically and strength is usually expressed in Kg/linear Cm., while in case of saddles and other items the total load required in Kg. to break the piece is expressed as crushing strength.

Chemical Analysis - In packing materials, the chemical analysis is only indicated since the versatility of the packing depends on the performance of the product.

Raw Material Test

• Physical Inspection for colour and texture
• Particle Size
• Chemical analysis.

Inprocess Test

• 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

Firing Controls

• 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

Final Product Tests

• Dimensional Checks
• Weight
• Water absorption
• Resistance to Acids and Alkalis
• Crushing strengths
• Tests conducted as per ASTM 279C, DIN and Customers specifications

Quality Norms - Quality norms are maintained as per ASTM/DIN/As per Customers specifications