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          How to select diamond coated tools

          AUTHOR:odkcheaw CLICK:724次

            Like any other cutting tool, the life of stone carving tool is different, which mainly depends on the material to be cut, the feed rate and cutting speed selected, and the geometry of the workpiece. Generally speaking, the life of diamond coated tools for machining graphite is 10-20 times longer than that of uncoated cemented carbide tools, which may be longer in some cases. In this way, almost any machining task can be completed with one tool, without tool change due to tool wear, and machining interruption and recalibration can be avoided, so it is possible to realize unattended machining. In the processing of composite materials, it is possible to obtain a longer tool life

            Spalling of diamond coating can prevent spalling, which is a serious problem and a common problem of diamond coated tools (especially in the processing of carbon fiber and other materials), and it will lead to difficult to predict tool life. In the late 1990s, interfacial chemistry was identified as an important factor affecting the adhesion properties of diamond coatings. By selecting the chemical characteristics of cemented carbide with good compatibility, adopting proper pretreatment technology and reasonable deposition reaction conditions, it is possible to reduce or eliminate the spalling of diamond coating and achieve stable wear mode. By observing the normal wear of diamond coated tools under the microscope, it can be found that the diamond is steadily worn until the cemented carbide substrate, without chipping or spalling.


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