TBM cutting tools
Tool body: The scraper tool body supports and protects the cemented carbide cutting tips. It requires sufficient strength and wear resistance. Made from medium-carbon alloy steel with hardness reaching above HRC 40. Surface hardening and local hardfacing provide a wear-resistant layer with hardness of HRC 52–57.
Cutting edge: Made of cemented carbide inserts, the size and shape of which are designed according to the position, function, and ground conditions.
Welding: The connection between the cutting tip and the tool body is critical. The bond strength must exceed 250 MPa. Our products use high-frequency induction brazing.
Disc Cutters –The Perfect Combination of Hardness and Toughness
Whether it is high-strength hard rock, water-bearing strata, or highly abrasive ground conditions, our disc cutters meet all your tunnel boring needs.
Tool body: The tool body, end caps, and axle are made of high-quality 42CrMo alloy steel. Bearings and floating seals are imported. A patented oil chamber with contaminant removal capability is incorporated, ensuring that every detail is perfected for superior product quality.
Cutter ring: Leveraging years of expertise in materials and heat treatment technology, Tianyi Company has broken the conventional approaches to cutter ring material selection held by both domestic and international competitors. With extensive experience in collaboration with steelmaking enterprises, we have achieved the perfect balance of hardness and toughness in cutter ring heat treatment, resolving the contradiction of brittleness and cracking at high hardness versus insufficient wear resistance at low hardness.
