The Influence of Heat Treatment on Tool Properties Mulcher

Abstract

The paper describes the analysis of two different worn-out tools of mulch devices. Both tools have been decommissioned due to missing of WC tips that have been soldered to the tool body. The tools body showed a significant signs of deformation. The input data of tools have been missing therefore it was carried out chemical analysis, hardness measurement and evaluation of material microstructure. Of the data collected has been identified material of tools and the heat treatment was proposed to increase the tool life. Then again followed analysis of the material to detect changes in the structure and mechanical properties. Consequently, we propose alternatives for improving of tools life. The first option is that forging can be heat treated. The second option is the exposed surface of the tool body can be heat treated by hardening as we marked through visualization of the tools. These ways should contribute to increased resistance to abrasive wear of functional surfaces of the tools.

Assessment of the Stability of Bev Lhd Loader

“…More and more attention is paid to ergonomics and occupational safety [14]. A growing number of new solutions of machines and machine elements are being developed You can find articles of mechanized roadway supports [15], battery-powered machines [16], mulchers [17], mining automation and robotization [18] or automatic drilling rigs for mining and tunnelling [19]. From the beginning of the process of designing this type of machine, especially an articulated one, it is necessary to analyse the values of mass and the location of the centres of gravity of the key components in order to assess the stability of the entire machine.…”

Computer-Aided Support for the Rapid Creation of Parametric Models of Milling Units for Longwall Shearers

“…This is an unavoidable process, but the correct design of the mining unit, the appropriate selection of parameters of the milling process as well as the optimal selection of tools allow to minimize and control and predict the wear of the knives [4,5,8,9,15]. It is worth noting that a similar problem also occurs with the mining of other natural materials, such as wood [11,12]. In both cases, steel mining tools, carbide blades and possibly wear-resistant coatings are used.…”