Design and reliability of clay hardness tester

Autores: Aungatichart, P.|Jiemsirilers, S.|Wada, S.
Fuente: J. Ceram. Soc. Jap., Int. Ed.
114 (1334), 829-832
2006

The design and reliability of NGK type clay hardness tester, which has been used for measuring the hardness of plastic clay body in order to control and/or check the consistency of the ceramic clay dough in the ceramic production, were investigated. It was found that the hardness values were depended on the design of the hardness tester, and to a larger extent on the human error. The factors affecting the reliability of the hardness values were also discussed.