Grate bar is a metal part being used in the sintering process in a steel company. It is exposed to severe operating conditions such as high temperature, corrosion, wear and chemical reaction and etc. In this paper, the surface of the grate bar is coated with high performance materials. They are Al2O3, Cr2O3, WC. These materials have enhanced grate bar’s performances of life time, corrosion, thermal resistance, abrasion, chemical resistance and etc. These high quality characteristics are verified through experimental tests. The results are presented and discussed.

ABSTRACT
 1. 서 론
 2. 그레이트바의 적용 및 시험
  2.1 사용조건
  2.2 마모시험
  2.3 부식시험
 3. 결론
 References

• 조희근(안동대학교 기계교육과) | Cho Hee-Keun
• 조은경(㈜ 엑토엔지니어링) | Cho Eun-Kyung
• 최준영(㈜ 엑토엔지니어링) | Choi Jun-Young
• 박원규(㈜ 엑토엔지니어링) | Park Won-Kyu