Wear of Coated Tungsten Carbide Tool In Cutting H.S. Steel Ⅸ

In last part we know that the (Al,Cr)N coating has lower oxidation temperature and a lower coefficient of friction, which also explains less wear for (Al,Cr)N coated tungsten carbide tool. And this part we make experiments to test the influence of cutting speed on tool wear.

As mentioned above, (Al,Cr)N was found to have superior properties for coating material  compared to (Ti,Al)N in cutting hardened sintered steel.

In cutting hardened sintered steel at various cutting speeds, the wear progress of tungsten carbide tool was investigated at a feed rate of 0.05 mm/rev and a depth of cut of 0.1 mm. Fig. 4 shows the influence of the cutting speed on the tool wear. There is little influence of the cutting speed on the tool wear within the range of cutting speed from 0.5 m/s to 1.0 m/s. So, SEM observation and EDS analysis was carried out on the worn surface.

(To be continued. This article is divided into several parts. Here is part 9. For part 8 please refer to http://news.chinatungsten.com/en/tungsten-information/80629-ti-10438)

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