Study on Effect of Sintering Pressure on the Properties of Diamond Bit

Abstract:

High pressure is demanded in producting diamond bit by cold-pressing. Although the pressure could be reduced by hot-pressing, a certain pressure is demanded to ensure the compactness of diamond bit matrix. Four sintering parameters, sintering temperature, holding time, sintering pressure and the pressing mode, are mainly included during producting diamond bit by hot-pressing. This article mainly discusses the effect of sintering pressure on the properties of diamond bit. First, select a general formula of diamond bit, take sintering pressure as variable, other parameters remaining immovability; then load and sinter a set of samples in this parameter. Testing and analysing the samples by mechanical properties test, such as bending, tension, compression, and rigidity, and SEM fracture analysis, we obtain the optimum sintering pressure in this formula.

• Periodical: Advanced Materials Research (Volumes 634-638)
• Pages: 2366-2372
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.634-638.2366
• Online since: January 2013
• Authors: Jun De Yang, Yang Yan Huang, Wei Chen
• Keywords: Bit, Diamond, Mechanical Property, SEM Analysis, Sintering Pressure

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