ALUMUNUM BILLET FOR EXTRUDING AND THE FAULTY PREVENT FOR BILLET FLUTING EQUIPMENT OF A ALUMUNUM BILLET

摘要

PURPOSE: An aluminum billet for extrusion and a grooving device for preventing air bubbles in the aluminum billet are provided to prevent the formation of air and gas layers during extrusion by concentrating the air and gas layers between an aluminum billet and a container to grooves of the aluminum billet. CONSTITUTION: An aluminum billet for extrusion has with two or more rows of longitudinal grooves formed by rolling on the periphery thereof. A grooving device for preventing air bubbles in the aluminum billet comprises a transfer frame(100), a roller unit(200) which is arranged on the front side of a support frame(170) arranged on one side of the transfer frame, and a pushing unit(300) which is arranged lengthwise on the top of the support frame.