THE WEAR PROCESS OF ROAD MILLING MACHINE CUTTING TOOLS AND THEIR INFLUENCE ON TECHNICAL EFFICIENCY
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This paper investigates the wear mechanisms of cutting tools used in road-milling machines and their impact on the overall technical efficiency of pavement-rehabilitation processes. Milling cutters operate under extreme mechanical, thermal, and abrasive loads that cause gradual deterioration of tool tips and holders, directly influencing cutting energy, surface roughness, and productivity. A theoretical and experimental review of global road-milling practices is presented, focusing on cutter geometry, material properties, and operational parameters. The study identifies the main wear modes—abrasive, adhesive, impact-fatigue, and thermal softening—and quantifies their effects on performance. The results show that maintaining optimal tool-wear rates through improved materials, cooling, and monitoring systems can increase milling efficiency by 20–30 % and extend tool life by 1.5–2 times.
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References
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