Moslem Tayebi - School of Materials Science, Sahand University of Technology, Tabriz, Iran
Hesam Moghadasi - School of Mechanical Engineering, Iran University of Science and Technology (IUST), Narmak, ۱۶۸۴۶-۱۳۱۱۴, Tehran, Iran
Davood Rahmatabadi - School of Mechanical Engineering, Iran University of Science and Technology (IUST), Narmak, ۱۶۸۴۶-۱۳۱۱۴, Tehran, Iran
Enayatolah Mohemi - National Iranian South Oil Company, Technical Inspection and Corrosion Metals Laboratory
Ramin Hashemi - School of Mechanical Engineering, Iran University of Science and Technology (IUST), Narmak, ۱۶۸۴۶-۱۳۱۱۴, Tehran, Iran

In this paper, the reasons of damage water pumps parts of the air compressor cooling system were studied. To reach this goal, the works like preparing metallographic samples, evaluation of structure, investigation of mechanical properties, the alloy parts detection and chemical analysis of deposit and corrosion products collected from the parts were performed. According to studies and results obtained, alloys suggested to be used in the impeller and casing are gray cast iron with flake graphite (random distributed) and ductile iron with spherical graphite (distributed almost uniformly), respectively. Also cause damage to the pump impeller, graphitic corrosion was described.

Impeller, Casing, Graphitic Corrosion, Gray Cast Iron, Air Compressor Cooling System