TOOTH FOR AN ROCK EXCAVATOR USED IN A MINE AND METHOD FOR MANUFACTURING THE SAME

摘要

The present invention relates to an excavator tooth appropriate for a rock excavator for a mine, which comprises: a wedge-shaped body which includes a fore-end unit made of cast steel and having a hollow unit therein, and a rear-end unit with an insertion hole for accommodating the tooth adapter of a bucket; and a wear resistant insert tip which is formed inside the body, is attached to a joint hole deeply formed in the longitudinal direction toward the insertion hole on the rear-end unit from the fore-end unit of the body, and is made of an alloy tool steel with a wear resistance material. The body is molded through a mold. The wear resistant insert tip is fixated inside the mold and is attached to the body while the body is molded. The joint hole becomes a boundary surface of a joint space which is formed while the outer circumferential surface of the wear resistance insert tip is fixated to the body during the molding. In addition, the wear resistant insert tip has a plate shape, has specifications smaller than the width and height of the fore-end unit of the body, and includes a penetration hole which penetrates the top and bottom surfaces thereof.