Resistance to Abrasive Wear with Regards to Mechanical Properties Using Low-Alloy Cast Steels Examined with the Use of a Dry Sand/Rubber Wheel Tester

Abstract

This paper focuses on relationship between the mechanical properties and abrasive wear resistance, expressed by the Kb index, using an example of low-alloy cast steels. In order to achieve the aim of this work, eight cast steels of varying chemical composition were designed, cast and then heat treated. The heat treatment involved quenching and tempering at 200, 400 and 600 °C. Structural changes caused by tempering are demonstrated by the different morphologies of the carbide phases in the ferritic matrix. In the first part of this paper, the present state of knowledge about the influence of structure and hardness on the tribological properties of steels is discussed. This research involved the evaluation of a material’s structure, as well as its tribological and mechanical properties. Microstructural observations were performed using a light microscope and a scanning electron microscope. Next, tribological tests were carried-out with the use of a dry sand/rubber wheel tester. To determine the mechanical properties, Brinell hardness measurements and a static tensile test were carried out. The relationship between the determined mechanical properties and abrasive wear resistance was then investigated. The analyses also provided information regarding the heat treatment states of the analyzed material in the as-cast and as-quenched states. It was found that the abrasive wear resistance, expressed by the index Kb, was most strongly correlated with hardness and yield point. In addition, observations of the wear surfaces indicated that the main wear mechanisms were microcutting and microplowing.

Effects of Deep Cryogenic Treatment on Friction and Wear of EN24 Steel Against Alumina Under Dry and Lubrication Conditions

“…Ploughed furrows (abrasive lines) found on all the wear tracks tested dry (Figures 7a-f and 8ac) are indicative of the abrasive-wear caused by the repeated dry sliding of the alumina ball [8,30,38]. Since the higher hardness of a solid material can give rise to its lower abrasive wear, the highest hardness of the DeepCryoTreat-EN24 is responsible for its lowest abrasive wear among the EN24 samples used in this study [30,39]. The repeated dry sliding of the alumina ball can cause surface spallation via fatigue wear [40].…”

Dry sand abrasion characteristics of WC-10Ni+NiCrBSi coatings

“…They analysed particle motion and wear mechanisms between the rubber wheel and the sample under varying loads. Nahvi et al [14] and B Białobrzeska et al [15]. Further investigated the relationship between grit movement and abrasive wear and obtained that the hardness of the specimen, the yield point and the applied load were the important factors affecting the grit movement.…”

Abrasive Wear Properties of Wear-Resistant Coating on Bucket Teeth Assessed Using a Dry Sand Rubber Wheel Tester

“…Several laboratory tribo-apparatuses have been designed, such as dry sand rubber wheel test (DSRWT) [8], wet sand rubber wheel test (WSRWT) [9], and sand steel wheel test (SSWT) [10], to evaluate the abrasive wear resistance of the materials, which are used in the mining, oil sand, and agricultural machinery industries [11][12][13][14][15][16][17]. These apparatuses can measure three-body wear under different service conditions.…”