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III, Influence of Pallets on the Quality of Clay Products *
Author(s) -
Schurecht H. G.,
Lampman C. Major
Publication year - 1937
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1937.tb19903.x
Subject(s) - pallet , shrinkage , cracking , materials science , metallurgy , composite material , grease , ceramic , pulp and paper industry , engineering , mechanical engineering
A bstract The retarding effects of surfaces of drying pallets to shrinkage of ceramic products are known to exert important influences on the quality of some ware. In retarding the shrinkage, strains are set up in the body which decrease the strength and in some cases cause cracking of the ware. Wooden surfaces, when tested along the grain, proved to be less injurious than steel or glass. The effect was much greater on lean than on highly plastic clays. Reducing the friction and adherence of the clay to steel pallets by covering them with sand, cardboard, or grease produced marked improvements in strength. Drying the ware under imposed loads also lowered the quality of the ware, but in some cases this effect was not as great as that produced by substituting steel for wooden pallets. The use of drying pallets with as low frictional resistance as possible will solve many drying problems in the heavy clay products industries.