WEAR RESISTANCE OF CAST IRON PARTS PRODUCED BY LOST FOAM CASTING

G.S. Yeszhanov; S.B.  Kuzembyev; S.T. Abdrakhmanova; R.M. Zhanshuakova

doi:10.31489/2026N2/6-12

Authors

DOI:

https://doi.org/10.31489/2026N2/6-12

Keywords:

castings, wear resistance, lost foam casting, testing; friction wedge, tribological properties, casting

Abstract

The article addresses the pressing issue of improving the wear resistance of cast iron parts manufactured by lost foam casting. Using a friction wedge as an example, the current state of wear-resistant components for railway rolling stock is analyzed. A methodology for accelerated testing to determine the tribological characteristics of castings is presented, based on specimen wear under conditions of external surface contact. The results of wear resistance tests conducted on samples of friction wedges are reported, enabling an assessment of component service life. Measures implemented to improve the lost foam casting process technology are also described. It is effective for casting parts weighing 10 to 20 kg, ensuring uniformity of chemical composition and the necessary stability of cast iron properties. The use of Ni, Ti, and Mo as alloying additives ensures casting hardness of up to 340 to 400 HB.

References

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WEAR RESISTANCE OF CAST IRON PARTS PRODUCED BY LOST FOAM CASTING