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Tungsten Carbide Gauge Teeth
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introduce
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Tungsten carbide gauge teeth are specialized wear-resistant components used in rock-cutting and drilling tools, particularly in tunnel boring machines (TBMs), reamers, and drill bits. Their main function is to maintain the diameter of the borehole or tunnel by protecting the outer edge of the cutter head from excessive wear during excavation.
Material and Structure
Gauge teeth are typically made of tungsten carbide, a material renowned for its extreme hardness, abrasion resistance, and high compressive strength. These teeth are either:
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Embedded (pressed or brazed) into the gauge ring of the cutter head, or
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Mounted on replaceable blocks or holders for easier maintenance.
The base is often made of alloy steel to ensure structural integrity under high loads and impacts.
Function and Importance
Unlike central cutting teeth, which are designed to crush or chip away at the rock directly, gauge teeth are positioned at the periphery of the cutter head. Their main roles include:
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Preserving the designed tunnel or borehole diameter
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Reducing wear on the cutter head's side structure
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Stabilizing the cutting trajectory by ensuring a clean, consistent edge
Applications
Gauge teeth are used in various rock-cutting and drilling systems, such as:
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Raise boring machines
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Horizontal directional drilling (HDD)
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Oil and gas drill bits
Advantages
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Exceptional wear resistance in abrasive formations
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Improved dimensional control of the excavation
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Extended tool life and reduced maintenance intervals
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Customizable profiles for different rock types and cutting environments
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Tungsten Carbide Gauge Teeth
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