Machines. Technologies. Materials.
Vol. 18 (2024), Issue 9, pg(s) 304-307

MATERIALS

Investgation properties of part – holder of breaking shoe beam made of SG60/SE300 steel cast

  • 1 Faculty of Technology and Metallurgy, Ss Cyril and Methodius University, Skopje Republic of North Macedonia
  • 2 University Tetova, Republic of North Macedonia
  • 3 Georgian Technical University (GTU), Faculty of Transportation and Mechanical Engineering, Tbilisi – Georgia

Abstract

The main reason to perform this research investigation was to find a reason for appearing failures in exploratory condition of a part holder of breaking shoe beam. This part is incorporated in an assembly in railway wagon. This part together with few others was damaged in exploratory condition. It means that cracks were noticed on these parts. Some parts were completely broken. Because of that purchaser of parts complained of received parts to the producer. One of these parts was delivered to Prof Cvetkovski to find a reason and to give opinion about the reason for failure. The damaged parts are made of cast steel SG60/SE300. Many types of investigation was performed in order to solve this problem. As first visual control was done. After that, radiographic control was made. Investigations continued with determination of chemical composition and macro and micro metallography and determination of non-metallic inclusions. Finally mechanical testing like tensile testing, hardness measurement and impact toughness were performed too. Performed research confirmed that typical casting defects in the investigated part like the hot tears, slag inclusions, shrinkage porosity and segregation are the main reasons for failure of the delivered parts, holder of breaking shoes i.e. appearing of cracks or their completely fracture.

Keywords

References

  1. DIN EN 10293, Steel castings for general engineering uses English version of DIN EN 10293
  2. EN1559-1:2011, Founding Technical conditions of delivery – Part 1: General
  3. EN1559-2:2011, Founding Technical conditions of delivery – Part 2: Additional requirement for steel casting
  4. DIN 1681:1967-06 Steel Castings for General Use; Quality Specifications
  5. 1681: GS-60 Cast Steel
  6. SCRATA, Steel casting research and trade association, Comparators for the definitions of surface quality of steel castings
  7. MSS SP-55-2001, Quality standard for Valves, Flanges, Fittings and other piping components,
  8. Avinash Juriani, Casting Defects Analysis in Foundry and Their Remedial Measures with Industrial Case Studies, IOSR Journal of Mechanical and Civil Engineering, Volume 12, Issue 6 Ver. I (Nov. - Dec. 2015)
  9. Sparrow Xiang, 22 Types of Casting Defects: Tips for Prevention, Lasted Update: August 27, 2024
  10. Dr. D.N. Shivappa1, Mr. Rohit2, Mr. Abhijit Bhattacharya3 “Analysis of Casting Defects and Identification of Remedial Measures – A Diagnostic
  11. Akash A. Gaware, Dr. A. K. Mahalle, A Review on Investigation of Casting Defects with Simulation, International Journal of Innovations in Engineering and Science, Vol. 2, No.5, 2017
  12. Vaibhav Ingle1 Madhukar So, Defects, Root Causes in Casting Process and Their Remedies: Review, Int. Journal of Engineering Research and Application www.ijera.com ISSN : 2248-9622, Vol. 7, Issue 3, ( Part -3) March 2017, pp.47-54

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