会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明授权
    • Vacuum refining method for molten steel
    • 钢水真空精炼法
    • US5902374A
    • 1999-05-11
    • US817269
    • 1997-03-28
    • Shinya KitamuraKimitoshi YonezawaKenichiro MiyamotoShinji SasakawaKunihiko Fujiwara
    • Shinya KitamuraKimitoshi YonezawaKenichiro MiyamotoShinji SasakawaKunihiko Fujiwara
    • C21C7/00C21C7/04C21C7/10
    • C21C7/0006C21C7/04C21C7/10
    • The present invention relates to a molten steel refining method for refining molten steel, the carbon content of which is not more than 0.1 weight %, by blowing oxygen gas for decarburization at a blowing speed so that a cavity, the depth of which is 150 to 400 mm, can be formed on the surface of molten steel in a straight barrel type vacuum refining apparatus in which a straight barrel type vacuum vessel having no vessel bottom and a ladle are arranged. When necessary, the above decarburizing processing conducted by blowing oxygen gas is combined with: an Al heating process in which Al added into the vacuum vessel is burned by oxygen gas blown into the vacuum vessel at a blowing speed such that the cavity depth can be 50 to 400 mm; a degassing treatment conducted in a high vacuum condition; a desulfurizing treatment in which a desulfurizing agent is blown into the vacuum vessel; or a burner heating treatment in which a combustion improving agent is blown together with oxygen gas, wherein each treatment except for the high vacuum degassing treatment is conducted in a degree of vacuum of 100 to 400 Torr.
    • PCT No.PCT / JP96 / 02173 Sec。 371日期1997年3月28日 102(e)1997年3月28日PCT PCT 1996年8月6日PCT公布。 第WO97 / 05291号公报 日期:1997年2月13日本发明涉及一种用于精炼钢水的钢水精炼方法,其中碳含量不超过0.1重量%,通过以吹制速度吹入用于脱碳的氧气,使得腔体的深度 可以在直筒型真空精炼装置中在钢水表面上形成150-400mm,其中设置有没有容器底部和钢包的直筒型真空容器。 必要时,将通过吹入氧气进行的上述脱碳处理与以下方式组合:Al加热过程,其中,通过以鼓风速度吹入真空容器中的氧气将Al添加到真空容器中,使得腔深度可以为50 至400毫米; 在高真空条件下进行脱气处理; 将脱硫剂吹入真空容器内的脱硫处理; 或燃烧改善剂与氧气一起吹送的燃烧器加热处理,除了高真空脱气处理以外的各处理是在真空度为100〜400托的范围内进行的。