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조희근(Hee-Keun Cho),안진효(Jin-Hyo Ahn) 한국기계가공학회 2017 한국기계가공학회지 Vol.16 No.5
The grate bar, a component used in steel mills, is used in harsh environments where external disturbances such as high temperature, abrasion, corrosion, and impacts are present. Therefore, in this study, spray-coating was performed on the most severely affected surface to extend the lifetime of the grate bar. The thermal and mechanical properties of the sprayed coated bars were investigated based on the performances under abrasion, thermal shock, tension, and sand blasting, and the microstructures by microscope. By analyzing the thermal and mechanical properties of the uncoated original grate bar and coated grate bar and comparing them with one another, the physical performance improvement of the coated grate bar can be verified.
Evaluation of High-Temperature Oxidation, Corrosion and Wear Resistance of Top-Coated Grate Bar
조희근(Hee Keun Cho),안진효(Jin Hyo Ahn) Korean Society for Precision Engineering 2017 한국정밀공학회지 Vol.34 No.12
Grate Bars used in the sintering process of steel companies are exposed to high temperatures, oxidation and abrasive environments. To extend the lifetime of the Grate Bar, surface coating was applied to enhance performance at high temperatures and reinforce abrasion resistance. To evaluate mechanical and chemical properties of these coatings, various tests such as abrasion resistance testing and high temperature oxidation testing were conducted. Based on results of the tests, selection of applicable coating materials and techniques were obtained in the field.