20MnSiV-MAKING WITH DIRECT ALLOYING OF V-SLAG IN BOF

MnSiV Ⅲ reinforcing bar, a new kind of construction material with high strength is recently developed in China. The experience of 20MnSiV making in BOF with direct alloying of V slag is carried out by Steelmaking Plant of Xinxing Ductile Pipes Group Co., Ltd. The test indicates that the process of 20MnSiV making in BOF with direct alloying of V slag is feasible and economical. The chemical composition and mechanical properties of 20MnSiV are reached to National Standard. The experienced formula between mechanical properties and composition is obtained by test.