Corrosion Resistance of Selected Cast Iron Grades Under Deposit Mining Conditions

Abstract The paper analyzes two types of alloyed cast iron used for pump impellers operated in mine working conditions. research on corrosion resistance grades resistant to abrasive wear was presented. Tests were performed chromium (HCCI) grade EN-GJN HV600 (XCr18) (acc. EN 12513) and high-silicon HSCI Grade 1 ASTM A 518/ 518M - 99). Deposit mining is characterized by variable Both are suitable loaded elements (e.g. impellers). presents a metallographic analysis selected based light microscopy. chemical composition the tested irons determined with Leco GDS 500 spectrometer; C S content CS125 Carbon–Sulfur Determinator. Si gravimetric method. Corrosion tests under laboratory In-service real conditions (working mines applications). measured VoltaLab ® Potentiostat (PGP 201). Performed resulted determination usefulness materials dewatering results verified operating impellers. In transporting liquid-solid mixture at moment appearance impurities chlorine impurities) liquid, from HCCI revealed tendency pitting corrosion, which explains exploitation collected mining. After sample HCCI, low value breakdown potential E b repassivation cp concluded says about absence resistance.