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BALANCING HOLLOW‐WARE DIES WITHOUT THE USE OF DRAGS THEREBY INCREASING CAPACITY *
Author(s) -
Longenecker H. L.
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.tb19853.x
Subject(s) - die (integrated circuit) , tile , tonnage , core (optical fiber) , flow (mathematics) , geology , materials science , composite material , engineering , mechanical engineering , mechanics , physics , oceanography
A bstract To produce ware which will not crack in the drier, tile must be extruded from a die at a uniform velocity across the die. It is sometimes difficult to make the clay fill the corners of a large die. In common practice, a die is balanced by placing drags on the rear ends of the core post at the section of the die which runs fast, retarding the clay flow at that point sufficiently to equalize the flow across the die. The difficulty in filling the corners is overcome by making deep semicircular gouges in the die behind the corners. It has been found better practice to speed the slow parts of the die by altering the taper of cores, shifting the cores sidewise to increase the web thickness at the slow sections, and thinning the web thickness at the fast sections. Gouging the corners is a form of dragging which is overcome by using better design. Experimental data, drawings, photographs, instructions for die building and balancing, and proper taper of dies and cores are given. A die balanced without drags increases the tonnage per hour and reduces the power requirements.