Cutter Head Protective Knife

When the tunnel boring machine (TBM) is used for construction of subway tunnel, railway tunnel, water tunnel and urban underground pipeline network, the cutter head protective knife is installed on the periphery of the cutter head to protect the periphery of the cutter head from excessive wear. It is generally long striped. Wear resistant layer with high strength and good wearing resistance is overlaid on the cutter body. Alloy cutter tooth or column tooth is also arranged.