Abrasive wear of shell linings of roller crushers and the wear resistance increase methods

The article describes the studies on the abrasive wear of cylindrical shell linings of roller crushers as this type of wear is the prime factor of the in-use life reduction of the equipment. On the basis of the analysis of shell lining wear mechanisms (microplastic deformation, fatigue failure, cutting wear, etc.), the mathematical model is developed using the Archard equation and Kragelsky’s method, with regard to the contact pressure, sliding velocity and material hardness. The experimental data on worn and reference models of rollers show the increase in the hardness (by 33% in terms of HV10) and in the microhardness (by 24% in terms ofHV0.1) of the worn surfaces due to the strain hardening effect. The process solutions proposed for the wear reduction include: plasma coating with wolfram carbide (WC) and titanium nitride (TiN), which increases wear resistance, and the use of segmented shell linings, which optimizes load distribution. The studies show that plasma coating reduces wear by 46% as compared with the reference models. 3D scanning and mathematical modeling allow pinpointing the maximum wear zones in shell linings and predicting their service life. By integrating materials with the improved properties with the rational geometry of shell linings, it is possible to reduce the maintenance cost of the equipment and to optimize its operating conditions, which enables extending its service life. 

Gospodarikov A. P., Efimov D. A. Abrasive wear of shell linings of roller crushers and the wear resistance increase methods. MIAB. Mining Inf. Anal. Bull. 2026;(2):5-27. [In Russ]. DOI: 10.25018/0236_1493_2026_2_0_5.

A.P. Gospodarikov¹, Dr. Sci. (Eng.), Professor, Head of Chair, e-mail: kafmatem@spmi.ru, ORCID ID: 0000-0003-1018-6841,
D.A. Efimov¹, Graduate Student, e-mail: s225065@stud.spmi.ru, ORCID ID: 0009-0005-4416-6875,
¹ Empress Catherine II Saint-Petersburg Mining University, 199106,Saint-Petersburg, Russia.

D.A. Efimov, e-mail: s225065@stud.spmi.ru.

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