Abstract
Taewoong is an open die forging company, specialized in the production of hot forged and ring rolled parts. Recently, Taewoong utilized continuous casting facilities that can manufacture O 1,000 grade large diameter round bloom to increase competitiveness of the company. This study focuses installed continuous casting facilities and ring rolling process using manufactured O 1,000 grade round bloom. Constitution of installed facilities was introduced and characteristics of the facilities, EAF (Electric Arc Furnace), LF (Ladle Furnace), VD (Vacuum Degassing), VOD (Vacuum Oxygen Decarburization) and CC (Continuous Casting) were described. Also, ring rolling experiments were performed using manufactured O 1,000 grade round bloom. Hot forging process design was performed to fabricate sound products. Work sequence design was performed using FE analysis software and optimal forging work sequence was derived. With the results, sound forged parts were formed and improvement of competitiveness was verified. Raw material recovery ratio was increased and the number of process and processing time were decreased. The results show utilized continuous cast facilities give opportunity to be a world competitive company by increasing competitiveness of the company.
Highlights
Open die forging is a kind of metal forming process that making desired shape by hammering or pressing
In open die forging, raw material is not enclosed by dies and deforms to space where not contacted by dies
Open die forged parts and seamless ring rolled parts are widely using for projects in the wind energy, chemical and petrochemical, ship building and marine engine, and power industries [1-4]
Summary
Open die forging is a kind of metal forming process that making desired shape by hammering or pressing. Open die forging has many advantages such as removal of internal defect, improved microstructure, finer grain size, continuous metal flow, increased fatigue and greater strength. Taewoong is growing into one of the world’s largest open die forging company, specialized in the production of hot forged parts and wide range of shapes and sizes can be fabricated with 6 open die forging presses (15,000 ton, 8,000 ton, 5,000 ton, 3,500 ton, 2,000 ton, 15,000 ton) and 2 ring rolling mills (Ø 9,500, Ø 3,000). Taewoong utilized continuous casting facility nearby forging facility to increase competitiveness of the company by reducing processing cost. This study introduces utilized continuous casting facilities to produce large diameter round bloom and hot forging process with the round bloom
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