Tungsten carbide shield cutter is a type of tungsten carbide cutter applied for tunnel boring machines. Such a cutter is made of carbide materials (WC, TiC) of high hardness and high melting point, together with cobalt (Co), nickel (Ni) or molybdenum (Mo) as binding phase. Generally, the heads of these cutters is made of coarse-grained WC-Co cemented carbide.
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Well, do you know how to choose tungsten carbide shield cutter? For the excavation of different strata, different types of shield cutters are usually adopted. For example, tungsten carbide disc cutter is suitable for excavating hard rock; tungsten carbide serrated knife is suitable for excavating soft rock; and tungsten carbide scraper is suitable for excavating soft soil or broken rock. Also, there are many other tungsten carbide cutters using in a tunnel boring machine. It means that the properties of tungsten carbide are important as they affect excavating efficiency.
