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TESTING AND EVALUATION OF MOLDING
SPECIAL CASTING PROCESSES
WORKING OUT THE TECHNOLOGICAL
alloy aluminium amount apparatus apparent density base sand bentonite binder bonding bulk density calculated carbon cast iron clay coefficient coke compaction composition compression strength contraction cooling copper core box crucible cupola curve cylindrical specimen depending determination diameter dried effect Experimental filter flowability fluidity flux foundry furnace gases given graphite green sand heat conductivity heating high temperature hygroscopic increase influence ingot layer liquid metal manometer measurement melt method methyl blue mixer mixing modified moisture content mold cavity mold mass mold material molding mixtures molding sand nozzle obtained oxides pattern permeability plate prepared pressure quartz quartz sand rammer refining sample sand grains sand mass sand mixture Schemat set-up shell shown in Fig shrinkage cavity sieve silicate sintering sodium sodium silicate solidification solution specimen tube stress surface technological tensile strength testing thermal thermocouple thickness volume weight