CONTROL MODE OF PROCESS FOR MANUFACTURING GRAPHITE AND HIGH-DUTY CAST IRON WITH GLOBULAR AND VERMICULAR GRAPHITE FOR CASTING RECEIVING

摘要

FIELD: metallurgy.;SUBSTANCE: invention concerns metallurgy field, foundry. Particularly it concerns control modes of grey and high-duty cast iron and can be used at single-piece, large-scale and mass production of cast iron castings. In method there is received basic alloy of cast iron with usage of alloying, modifying and graphitising admixtures, process qualities are controlled and corrected including operation by effect of spheroidising and vermiculising modification at the section of casting mold charging. It is implemented one-time ladleman cast iron treatment, making preliminary calculation the quantity of alloying, modifying and graphitising admixtures depending on weight of liquid metal, containing of sulphur and oxygen, basic elements and alloying inside of basic cast iron melt and time of holding modifying effect, at that control of all process parameters is outfitted by overall video surveillance system for manufacturing operations with registration and delivering of received results into computer data base and to the lighting panel. Finishing of modifying effect is alerted by acoustic alarm.;EFFECT: stabile, steady and reliable manufacturing of casting grey and high-duty cast iron at minimal modifier metering characteristic or ligation, providing manufacturing of cast iron castings with specified metallographic and physical-mechanical properties.;3 tbl