Effects of over Heat and Casting Speed on Quality of GCr15 Billet

Abstract:

In order to improve the quality of the billets, the whole test proceedings by the comparison of the two casting conditions which one is over heat 20°C-30°C under casting speed 0.4m/min-0.6m/min and the other is over heat 10°C-15 °C under casting speed 1.3m/min-1.6m/min are checked during the produce process of GCr15 in some domestic steel-making plant. The results show that the average grade of general porosity decreases 1.0, the average grade of center porosity down 0.5, the average grade of center segregation fall 0.5 and the samples tested in hot upset forging perform better than before. According to the results, the latter is determined to be accepted.

• Periodical: Advanced Materials Research (Volume 997)
• Pages: 534-537
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.997.534
• Online since: August 2014
• Authors: Qi Wei Zuo, Xia An, Jing Bo Yang, Da Qiang Cang
• Keywords: Bearing, Casting Speed, Center Segregation, Hot Upset Forging, Over Heat, Porosity

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