In a tunnel boring machine (TBM), wear-resistant steel is typically used in the following key areas: Cutterhead and Cutting Tools: The cutterhead and cutting tools are responsible for cutting and breaking soil and rock. These parts need highly wear-resistant materials to extend their service life and reduce maintenance frequency. Scrapers: Scrapers are used to clear soil and rock debris from the cutting surface. These parts require wear-resistant steel to resist abrasion and corrosion. Shield: The shield is the protective part at the front end of the TBM that directly contacts soil and rock. Wear-resistant steel is used here to increase durability. Thrust Cylinders: Thrust cylinders experience friction and pressure during the tunneling process. Using wear-resistant steel can reduce wear and ensure stable operation of the machine. Screw Conveyor: The screw conveyor is used to transport the excavated soil and rock out of the tunnel. It also needs wear-resistant materials to re
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