18NiCrMo14 - 6강 적용 링압연 공정설계

Ring rolling process was designed for wind mill forging part using 18NiCrMo14-6 steel. Dimensional accuracy as well as microstructure during ring rolling was needed to be sought for a successful forging part in the present study. For this purpose, both physical and thermodynamic properties were calculated with using commercial software, Jmat-Pro. Also, high temperature compression tests were performed to get deformation characteristics of 18NiCrMo14-6 steel. These compression data was interpreted under the dynamic deformation theory. Using these data, finite element analyses were carried out for a proposed ring rolling process. After finite element simulation, a modified process was proposed to hider ring rolling defects.