Composite tooth

The utility model relates to the field of rock-soil drilling and digging engineering, in particular to a composite tooth. The composite tooth comprises a tooth core part and a core wrapping part, the tooth core part is sleeved with the core wrapping part, the first end of the tooth core part and the first end of the core wrapping part are located on the same plane or the first end of the tooth core part protrudes out of the first end of the core wrapping part, and the toughness of the core wrapping part is larger than that of the tooth core part. According to the composite tooth, the outer side of the tooth core part is wrapped with the core wrapping part with high toughness, the core wrapping part can provide supporting protection for the tooth core part, the impact load resistance of the alloy tooth is improved, and the tooth core part is prevented from being broken. 本实用新型涉及岩土钻掘工程领域，具体而言，涉及一种复合齿。复合齿包括齿芯部和包芯部，包芯部套设在齿芯部的外侧，齿芯部的第一端与包芯部的第一端处于同一平面上或齿芯部的第一端突出于包芯部的第一端，包芯部的韧性大于齿芯部的韧性。复合齿在齿芯部外侧包裹具有韧性较大的包芯部，包芯部能够为齿芯部