20Mnsi是我公司生产螺纹钢筋的主要钢种,过去是采用绝热板、保护渣模注工艺生产,劳动强度大,生产效率低,钢锭化学成分偏析严重,影响了钢材机械性能的稳定性。为了充分发挥方坯连铸机的作用,提高经济效益,我公司三月和六月分别组织试产了两批连铸20Mnsi钢筋,成坯率为95.55%,比钢锭提高5%左右,轧成Φ14mm螺纹钢筋的 20Mnsi is the main type of steel rebar produced by our company. In the past, it was produced by using insulating board and mold powder injection molding technology. The labor intensity was large and the production efficiency was low. The segregation of chemical composition of the ingot was serious, which affected the stability of the mechanical properties of the steel. In order to give full play to the role of billet caster, improve economic efficiency, our company in March and June were organized trial production of two batches of continuous casting 20Mnsi steel, billet rate was 95.55%, 5% higher than the ingot, rolling into Φ14mm thread reinforced