Breviary Technical Ceramics






9.4 Tests (Q-Certificates)

The wide variety of factors affecting ceramic technologies require continuous monitoring in all areas of production.
A consistent quality standard is guaranteed by an extensive quality management system. The quality steering measures that accompany the manufacturing process are documented in test schedules which form part of the manufacturing schedules.

Routing slips, quality-control cards and test protocols provide the ability to check all the documented process steps and guarantee traceability back to the raw materials.

The tests mainly emphasise

  • monitoring incoming raw materials and semifabricated products,
  • monitoring material data as per test specification,
  • process monitoring in order to obtain a consistent, predictable and regulated process , and
  • final testing.

Tests range from the 100 % testing of certain parameters, integrated with automatic manufacturing, all the way to extensive long-term tests on random samples. Statistical testing plays an important role in the final check by the manufacturer and the incoming tests carried out by the customer. Although the delivery of products that are free from defects is the basis of every delivery agreement, the ability to certify the quality level is indispensable for legal and commercial reasons. The need to access the Acceptance Quality Level (AQL) therefore makes it essential to obtain a statistically formed judgement on the basis of random samples.



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