Dredge Cutter Teeth
Dredge cutter teeth are the core cutting consumables mounted on the cutter head of a dredger. Distributed in a tooth - like pattern along the edge of the cutter head, they serve as the key components that directly contact and crush underwater materials such as silt, clay, pebbles and even rocks during dredging operations.
Core Functions
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Cutting and Crushing
During the rotation of the cutter head, the dredge cutter teeth penetrate into the underwater soil or rock surfaces, breaking lumpy and dense materials into small particles to facilitate the suction and transportation of subsequent slurry pumps.
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Auxiliary Agitation
Cooperating with the rotational movement of the cutter head, they agitate underwater materials, making them fully mix with water to form slurry and thus improving the efficiency of dredging operations.
Material Characteristics
Given the harsh working conditions where they have to withstand high - intensity impact, abrasion and corrosion, dredge cutter teeth are usually made of the following wear - resistant and corrosion - resistant materials:
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High - hardness alloy steel (e.g., high manganese steel, wear - resistant chromium steel)
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Composite steel plates with surfacing wear - resistant alloy layers
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In special working conditions, cemented carbide inlaid structures are adopted to further extend the service life
Classification and Applicable Scenarios
According to different dredged materials, dredge cutter teeth are divided into various specifications and types:
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Light - duty cutter teeth: Featuring sharp tooth profiles, they are suitable for loose materials like silt and soft clay, and are commonly used in ordinary dredging of rivers and lakes.
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Medium - duty cutter teeth: With thickened tooth bodies and moderate hardness, they are applicable to medium - hardness materials such as sandy soil layers and weathered soil layers, and are used in dredging of port waterways.
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Heavy - duty cutter teeth: Characterized by robust tooth bodies and made of impact - resistant materials, they are designed for hard materials including pebble layers and hard rock formations, and are frequently used in heavy - duty projects such as deep - sea dredging and land reclamation through sand filling.
Application Fields
Dredge cutter teeth are widely used in projects such as waterway dredging, port expansion, river channel desilting, seabed resource exploitation and land reclamation. As the core components ensuring the efficient operation of dredgers, they need to be regularly inspected for wear and replaced in a timely manner to avoid affecting dredging efficiency.
