Technology Revealed: How do our shield machine cutter heads achieve the perfect balance of "ultra-long life" and "efficient rock breaking"?

Technology Revealed: How do our shield machine cutter heads achieve the perfect balance of "ultra-long life" and "efficient rock breaking"?

The operating environment of a shield machine cutter head is extremely harsh, requiring it to withstand immense compression, shear, and friction. How do we make it the "steel teeth" of a tunnel boring machine? The answer lies in our unparalleled dedication to materials science and precision manufacturing.

1. Core Advantage: Customized Superalloy Material Formulas

We collaborate with leading domestic materials research institutes to develop customized alloy steels suitable for diverse geological conditions.

For highly abrasive formations (such as those containing quartz sand), we use high-hardness, high-toughness martensitic alloy steel to ensure the cutter ring remains sharp even under high-speed friction.

For hard rock formations subject to high impact loads, we optimize the material's impact toughness to prevent chipping or breakage when encountering boulders or joints.

2.Second Core Advantage: Precision Heat Treatment and Surface Hardening

Heat treatment is the critical step in giving the cutter head its "life." We utilize fully automated vacuum heat treatment technology to precisely control the heating and cooling curves, achieving the ideal hardness gradient for the cutter: a hard exterior and tough interior. In addition, we apply carbide overlay welding or PVD/CVD coating technology to critical components like cutters and scrapers, creating an ultra-wear-resistant protective layer on the surface, extending service life by more than **[replace with a specific value, such as 20%].

3.Third Core Advantage: Digital Design and Finite Element Analysis (FEA)

Prior to manufacturing, our engineering team utilizes advanced FEA simulation software to simulate the stress distribution of cutter heads under combined loads and high water pressure. This digital design ensures maximum strength and minimizes stress concentration in tool structures (such as the cutter bearing housing and cutter mounting structure), eliminating the risk of structural failure at the source.

Conclusion: Our cutter heads and accessories are more than simple steel parts; they are precision-engineered products that incorporate materials science, thermodynamics, and structural mechanics. We are committed to providing our customers with the most reliable and cost-effective tunneling solutions through continuous technological innovation.