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Year 2021 Volume 19, Issue 3 |
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Issues/2021/vol. 19 /Issue 3 |
Ali Sadiq Alithari, Oday Khadem Mohammed
«Improving Wear Resistance for Grinding Balls of Horizontal Cement Mill in Cement Plant by Nanocoating Technique
»
0559–0570 (2021)
PACS numbers: 62.20.Qp, 68.37.Hk, 68.55.jd, 81.15.Rs, 81.20.Wk, 81.40.Pq, 81.65.Ps
The grinding media play an important role in cement industry, and these balls suffered from severe wear during the grinding process of clinker. The aim of this investigation is to decrease the wear rate of the grinding balls used in horizontal cement mills by using nanocoating of tungsten carbides WC. The samples of white cast iron are prepared according to standards of ASTM 522 and DIN 1669 German for microhardness test and wear test (pin on disc). High-velocity oxy-fuel system used to coat the samples with a thickness of 50, 70, and 80 \(\mu\)m with nanoparticles of WC. The results show that the best coat thickness is of 70 \(\mu\)m that gives good results and best adhesion with the base material. The presence of nanocoating on sample surface increases the wear resistance by about 75% and increases the microhardness by about 14.6% for samples coated with 70 \(\mu\)m layer thickness.
Keywords: high-chromium white cast irons, tungsten carbide (WC) nanoparticles, HVOF system, wear test, microhardness test
https://doi.org/10.15407/nnn.19.03.559
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