Thework presented in this paper focused on the recycling of ferrous scrap metal and its utilization in the production of automobile brake drum. Cast iron scrap and steel scrap from old automobiles were selected as a case study with addition of graphite to improve the percentage of carbon and Ferro-silicon for inoculation. Brake drum and test bars were casted employing Electric Arc Furnace (EAF) and green sand-casting method. Micro-structural property of the recycled product was determined using metallurgical microscope with 200x magnification while chemical composition was determined using Optical Electron Spectrometer (OES). The photo-micrograph of the cast brake drum showed that a gray cast iron microstructure was obtained while the OES analysis showed an average composition of elements as: Fe 94.61 %, C 3.12 %, Si 1.38 %, Mn 0.475 %, S 0.003 %, P 0.008 %, and Cr 0.113 % along with trace amount of some other twelve elements which meets the minimum standard for Brake Drum application designated by Society of Automotive Engineering (SAE). Results from mechanical tests showed that Maximum Tensile strength of the of the material was 81.45317 MPa when the load was gradually applied within 7.788 sec to fracture, Hardness strength 97.73 HRB/228 HB, while Impact strength 2 J. The cast iron produced can be modified for use in other applications such as automobile engine blocks, discs, etc.
Automobile Brake Drum, Electric Arc Furnace, Ferrous Scrap, Mechanical properties, Melting, Optical Electron photo-micrograph, Spectrometer, Sand Casting, Recycling
M. A. Bawa , N. Mohammed , M. H. Muhammad , D. E. Bot "Recycling of Ferrous Metal Scrap for Production of Automobile Brake Drum in Nigeria " Iconic Research And Engineering Journals Volume 3 Issue 11 2020 Page 73-79
M. A. Bawa , N. Mohammed , M. H. Muhammad , D. E. Bot "Recycling of Ferrous Metal Scrap for Production of Automobile Brake Drum in Nigeria " Iconic Research And Engineering Journals, 3(11)