Hardening by Transformation and Cold Working in a Hadfield Steel Cone Crusher Liner

Abstract

This paper presents the characterization of a secondary cone crusher concave liner made of Hadfield steel used in Chilean mining after crushing copper minerals during all service life. During use, a cone crusher concave liner suffers indentation (cold working) and abrasion; this combination provides the concave with a layer that constantly renews itself, maintaining a surface highly resistant to abrasive wear. The results presented here were obtained using optical microscopy, microhardness test, measuring abrasion using the dry sand/rubber wheel apparatus, and x-ray diffraction peaks analysis through the classic Williamson–Hall method. After analysis of results, two hardened surfaces have been found—one a product of heat treatment and the other due to deformation during use. This work proposes ways to explain them; the first one uses a thermodynamic model to calculate stacking fault energy, and the second compares the liner with cold-rolled samples.

Effect of Crusher Arm Position and Surface Friction on the Mechanical Behaviour of a Crusher under Static Conditions

“…The used three-point bending analysis results showed that loading angle and position affect the deformation modes. In studies carried out on crushers that have a conical structure rather than a beam structure, heat treatment [18] was applied on a cone crusher surface to increase the resistance to abrasion. Gyratory crusher torque analysis [19] was analyzed with discrete element method and found that large particles cause to decrease the crushing torque.…”

Heat Treating Effect on WC-Co Tool Tip Scraps Reinforcement in Hadfield Austenitic Manganese Steel

“…One approach is to increase the manganese alloy content up to 20% [11,12]. Another commonly used method is strain hardening [11][12][13][14][15]. However, strain hardening alone is not sufficient to significantly improve wear resistance.…”

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