科研之友
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摘要
This paper presents the results of a study on the possibility of replacing cutting inserts and introducing dry-cutting mode (without water rinsing) with a chainsaw machine in the underground structures of the Hotavlje I quarry. In the experiment a column-driven chainsaw machine Fantini G.70 was used with tungsten-carbide-based cutting inserts. The article presents the physico-mechanical properties of the natural stone called the Hotaveljcan limestone and the state of discontinuities, which has a significant impact on the efficiency of stone cutting. In the experiment the cutting characteristics of two types of inserts, type H-13A and type H6T, were compared. The specimens of both types of the used inserts were subjected to a detailed metallographic investigation to evaluate the changes in the surface structure and hardness, the results of which are presented in detail.
- 出版日期2015-2
