| Show SAND 81 Industrial Process Time In Iron Working ITHACA N Y July 2 24 By ByTho Tho Associated Press Press has taken the tho work out of another Industrial process It has evolved standard meth meth- methods methods for tor testing sands which enable to tell whether the sand he le Is usIng for a n given casting has tho right s for preventing flaws whether It is strong enough and It contains the proper Qualities qualities qualities- AT The standardization which al already ready la Is effecting substantial sav- sav sav savings ings In the Industry has been per per- perfected per perfected by an international research organized by the American association association tion and the tho national research Much of tho research work that attended the develop develop- development development ment of the standard tests has been done In the laboratory of geology at Cornell Corn university As re a-re result a-result the committee has recommended several pieces of ap apparatus tor Cor testing the permeability texture of mold mold mold-ing Ing sands Previously the foun foun dryman had hd had no means of determining whether ho as using the that exactly met his requirements and conse conse- consequently consequently many castings vere spoiled due to with various arlous grades TEST IEST BEFORE Now however he can test hh sand before he Jle starts a casting casting- thus of en the possibility possibility at o costly mistakes With the same methods he can main maintain tain a dally control over tho properties of o his sand heaps leaps Ons of the factors to tho orl of the research com committee was the gradual depletion of the deposits of t high grade mold moldIng Ing sand an and the increased costs of shipments from new and less lessa a beds The annual sand bill of the tho American It was estimated had soared to and so scientists were asked to rind find a means of prevent prevent- preventIng preventing ing Ing waste |