公开(公告)号：US4741772A

公开(公告)日：1988-05-03

申请号：US608151

申请日：1984-05-08

申请人： Shieh Maw-Cheng ,  Chen Seng-Jung ,  Hu Li-Jung ,  Su Jin-Luh

发明人： Shieh Maw-Cheng ,  Chen Seng-Jung ,  Hu Li-Jung ,  Su Jin-Luh

IPC分类号： C21C5/28 ,  C21C5/52 ,  C21C7/06 ,  C21C7/02

CPC分类号： C21C7/06 ,  C21C5/285 ,  C21C5/5294 ,  Y02P10/216

摘要： The present invention relates to a Weak Pre-Deoxidation Process (abbreviated as W.P.D. process) for producing Al-killed and/or Ti-Killed steel. In this process the proper amount of Si-containing ferro-alloy is added into molten steel during tapping, as Weak Pre-Deoxidation, then the ladle is transferred to Al-Wire feeder system or ladle injection treating equipment to proceed final stage of deoxidation. Not only can the recovery rate of deoxidizer be increased by this new process, but also the cleanliness as well as surface and internal quality of products are effectively improved. Besides, the production cost will be reduced due to less deoxidizer addition, less billet conditioning cost, less rejection and less customer claim. Thus the W.P.D. process is a break-through in present steelmaking practice.

摘要翻译： 本发明涉及一种用于生产杀死Al和/或Ti-Killed钢的弱预脱氧工艺（缩写为W.P.D.工艺）。 在这个过程中，适当量的含硅铁合金在攻丝期间被加入到钢水中，作为弱预脱氧，然后将钢包转移到Al-Wire进料系统或钢包注射处理设备进行脱氧的最后阶段。 这种新工艺不仅可以提高脱氧剂的回收率，而且可以有效提高产品的清洁度，表面和内部质量。 此外，由于减少了脱氧剂添加量，减少了坯料调节成本，减少了拒收和较少的客户要求，生产成本将会降低。 因此，W.P.D. 过程是目前炼钢业务的突破口。