Tungsten Carbide Button Diamond Enhanced

In order to increase the life of the bit, to increase the rate of penetration and to decrease drilling cost, a new type of  tungsten carbide diamond-enhanced composite button with high abrasive resistance and high toughness against impact, which may be used in percussion drilling, has been developed. The key problems in making the button are to improve the thermal stability of the diamond, increase the welding strength between the diamond and the cemented tungsten carbide, and reduce the sintering temperature of the tungsten carbide. All these problems have been solved effectively by pretreatment of the diamond, low temperature activation hot-press sintering.

The properties of the button have been determined under laboratory conditions. The test results show that its hardness is more than 86 HRA, its abrasiveness resistance is 100 times more than that of conventional cemented tungsten carbide. All these data theoretically that show the diamond enhanced tungsten carbide button has very good mechanical properties that can meet the needs of percussion drilling, and can solve the problems encountered with button bits of conventional cemented tungsten carbide.


Tungsten Carbide Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-carbide.com.cn
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email:   sales@chinatungsten.com
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