Diminution of scaling by the application of a protective coating

✍ Scribed by M. Torkar; B. Glogovac; F. Kaučič; D. Finẑgar; S. Triglav

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 641 KB
• Volume: 58
• Category: Article
• ISSN: 0924-0136
• DOI: 10.1016/0924-0136(95)02126-4

✦ Synopsis

Together with research and optimization of the atmosphere in industrial walking-beam reheating furnaces in Slovenian steel works, a protective coating for the reduction of scale growth was tested. The effect of the protective coating is based on the high temperature formation of a protective film consisting of amorphous SiO2, e-modified A1203 and FeO'A1203. Optimization of the atmosphere in the walking-beam furnace and the application of the protective coating on the billets reduced the loss of iron by scaling by up to 60%, compared to uncovered steel, and reduced the decarburization of carbon steels. The protective coating was most effective in the temperature range between 1000 and 1200 °C. The application of the coating proved to be as effective on different steel grades in laboratory tests as well as in rolling mills during normal production.