An Investigation of Casting Defects Revealed in Forming Process of USD۷ Steel

Publish Year: 1385
نوع سند: مقاله ژورنالی
زبان: English
View: 78

This Paper With 5 Page And PDF Format Ready To Download

  • Certificate
  • من نویسنده این مقاله هستم

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این Paper:

شناسه ملی سند علمی:

JR_ISSIRAN-3-2_005

تاریخ نمایه سازی: 6 آبان 1402

Abstract:

USD۷ is one of the steel products of Isfahan Steel Company. It is cast in continuous casting moulds and rolled up to a rod of ۵ mm diameter. Finally, it is wire drawn up to ۳ mm and used as welding electrodes. This steel contains ۰.۰۵ to ۰.۰۹ wt. % carbon. The acceptable limit of the aluminium in this class of steel is less than ۰.۰۰۳ wt%. Therefore, it is categorized as rimmed steel. During forming process, there are some defects such as tearing and laminating that stop the forming process. The aim of this research is to evaluate the factors causing the aforementioned defects. It was found that there were many porosities in the cast ingot. The area around these porosities was analyzed with EDS method, and inclusions with MnO and (Fe, Mn)O chemical composition were observed. It was found that they were external inclusions (slag inclusions caused by reoxidation and entrapment phenomena). Because of the presence of these inclusions, these porosities are not welded together during rolling process. Therefore, in the next steps of the forming process, these defects are revealed.

Authors

A. Homayoun

Department of Materials and Metallurgical Engineering, Iran University of Science & Technology, Tehran, ۱۶۸۴۴, Iran

M. Shahmohammadi

Department of Materials and Metallurgical Engineering, Iran University of Science & Technology, Tehran, ۱۶۸۴۴, Iran

M. Soltanieh

Department of Materials and Metallurgical Engineering, Iran University of Science & Technology, Tehran, ۱۶۸۴۴, Iran

A. Afzali

Isfahan Steel Company, Isfahan, ۸۴۹۳۱, Iran

مراجع و منابع این Paper:

لیست زیر مراجع و منابع استفاده شده در این Paper را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود Paper لینک شده اند :
  • ASM Handbook, Failure Analysis and Prevention, ۱۱ (۱۹۸۶) ...
  • C. R. Tottle, An Encyclopedia of Metallurgy and Materials, Macdonald ...
  • J. Hejazi, Inclusion Removing and Melt Refining, in Farsi, Casting, ...
  • R. Kiessling, N. Lange, Non-Metallic Inclusion in Steel, The Metal ...
  • Microscopic Examination of Special Steels Using Standard Diagrams to Assess ...
  • P. Bidulya, Steel Foundry Practice, Peace publishers,Moscow, (۱۹۷۲), ۱۲۷ ...
  • R. W. Monroe, M. Blair, Important Factors in Production of ...
  • D. C. Hilty, D. A. Kay, Inclusion in Steels, Electric ...
  • V. Kudrin, Steel Making, Mir Publishers,Moscow, (۱۹۸۵), ۱۰۷ ...
  • Y. Tomita, Mater. Sci., ۲۵ (۱۹۹۰), ۹۵۰ ...
  • M. Azidhak, Continuous Casting of Steel, in Farsi, Isfahan Steel ...
  • E. T. Turkdogan, Deoxidation of Steel, ISIJ, (۱۹۷۲) ...
  • نمایش کامل مراجع