Myszka Dawid, Wieczorek Andrzej N, Skołek Emilia, Borowski Tomasz, Kotwica Krzysztof, Kalita Marek, Kruk Radosław, Nuckowski Paweł M
Faculty of Mechanical and Industrial Engineering, Warsaw University of Technology, Narbutta 85 Street, 02-524 Warsaw, Poland.
Faculty of Mining, Safety Engineering and Industrial Automation, Silesian University of Technology, Akademicka 2 Street, 44-100 Gliwice, Poland.
Materials (Basel). 2023 Jun 11;16(12):4311. doi: 10.3390/ma16124311.
The purpose of this study was to experimentally determine the abrasion wear properties of ausferritic ductile iron austempered at 250 °C in order to obtain cast iron of class EN-GJS-1400-1. It has been found that such a cast iron grade makes it possible to create structures for material conveyors used for short-distance transport purposes, required to perform in terms of abrasion resistance under extreme conditions. The wear tests addressed in the paper were conducted at a ring-on-ring type of test rig. The test samples were examined under the conditions of slide mating, where the main destructive process was surface microcutting via loose corundum grains. The mass loss of the examined samples was measured as a parameter characteristic of the wear. The volume loss values thus obtained were plotted as a function of initial hardness. Based on these results, it has been found that prolonged heat treatment (of more than 6 h) causes only an insignificant increase in the resistance to abrasive wear.
本研究的目的是通过实验确定在250°C下等温淬火的奥氏体球墨铸铁的耐磨性能，以获得EN-GJS-1400-1级铸铁。已经发现，这种铸铁等级能够制造用于短距离运输目的的物料输送机结构，这些结构在极端条件下需要具备耐磨性能。本文所述的磨损试验是在环-环式试验台上进行的。试验样品在滑动配合条件下进行检测，其中主要的破坏过程是通过松散的刚玉颗粒进行表面微切削。测量被检测样品的质量损失作为磨损的参数特征。将由此获得的体积损失值绘制成初始硬度的函数。基于这些结果，发现长时间的热处理（超过6小时）只会使耐磨性能有微不足道的提高。
