耐火与石灰 ›› 2021, Vol. 46 ›› Issue (4): 43-46.

• 综述 • 上一篇    下一篇

钢包无铬狭缝式透气塞的研制

刘晓妍  田琳  边振虎   

  1. 辽宁科技大学材料与冶金学院, 鞍山114051
  • 出版日期:2021-08-10 发布日期:2021-09-14

Development of chromium-free slit type plug for steel ladle

Liu Xiaoyan  Tian Lin  Bian Zhenhu   

  1. College of Materials & Metallurgy, Liaoning University of Science & Technology, Anshan 114051, China
  • Online:2021-08-10 Published:2021-09-14

摘要:

弥散式(多孔式)透气塞作为钢包二次精炼的吹氩装置,早已得到了广泛应用。与弥散式透气塞相比,狭缝式透气塞具有更大的气体流量和优良的抗侵蚀性等优点,近年来其应用越来越广泛。钢包用狭缝式透气塞具有良好的气体流动性,在热修过程中,通过吹氧进行清洁气流通道,可以恢复良好的气体流动性并可多次循环使用。但传统的狭缝式透气塞中因加入氧化铬,虽可提高其抗侵蚀性,但由于六价铬对人体和环境的不良影响,从健康、环保的角度出发,客户要求产品无铬化。基于以上因素,使用致密化技术开发了一种无铬狭缝式透气塞,在保证良好透气性的基础上,它与传统含铬氧化物产品具有同等的抗侵蚀性。

关键词: 钢包, 狭缝式透气塞, 抗侵蚀性

Abstract:

According to the investigation,the dispersed (porous) type plug has been widely used as a argon blowing plug for secondary refining of ladle.In recent years, compared with the dispersion plug,the slit type plug is more and more widely used because of its advantages of larger gas flow rate and excellent corrosion resistance.The slit type plug for ladle has good gas fluidity,because the plug can be cleaned by oxygen gas blowing in hot repair process to recover gas flowability and can be recycled many times.The traditional slit type plug contains chromium oxide,which increases the corrosion resistance,but due to the adverse effects of hexavalent chromium on human body and environment,from the point of view of health and environmental protection,the customers require the products to be chromium-free.On the basis of ensuring good air permeability,it has the same corrosion resistance as traditional chromium-containing oxide products.

Key words: Ladle, Slit type plug, Corrosion resistance

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