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Saw Tooth Tungsten Carbide

Saw Tooth Tungsten Carbide

Tungsten Carbide Bits

Saw-Tooth Tungsten-Carbide Core Bits

These bits are set with large, rectangular-shaped tungsten-carbide elements that are physically embedded into the crown of the tool.

The bit face has an aggressive saw-tooth pattern with either integral canal type waterways or with optional cylindrical-shaped face-discharge ports on thick-kerf wireline core bits.

The bit crown itself is composed of a tough, wear resistant metal-bond matrix material. The gauge diameters of the tool are also heavily set with tungsten-carbide wear pads.

The application of this type of bit is primarily in geotechnical soil investigation or for core drilling in overburden layers that are composed mainly of clay, sand, gypsum or soft shale.

Tungsten Carbide Chip

Tungsten Carbide Chip

Carbide-Chip Core Bits

The cutting media used in this type of core bit are crushed tungsten-carbide chips that are suspended in a metallic alloy that is fused to the steel body of the tool.

Typically, these tungsten-carbide chips have a granular size of 0.08 to 0.20 inch (2 to 5mm) and have a totally random orientation within the bit crown.

The face profile is somewhat irregular and the waterways are of the standard canal type (Style "W") design.

This type of core bit has considerably more cutting edges than the "saw-tooth" variety and as such have a wider range of application that includes slightly harder sedimentary formations.

Carbide-chip core bits are also frequently used to clean steel fragments out of existing drill holes.

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