Patent ID: 8584501
Filing Date: 2013-11-19
Classification: B21C,B21F,B21J

Abstract:
1. A thixoextrusion molding apparatus for forming a seamless extrudate, comprising: a container storing 10 to 30 parts by weight of a semi-solid billet therein; an extrusion die having a plurality of extrusion holes through which the semi-solid billet is spit and extruded into a plurality of strands, a bearing in communication with a chamber accommodating the semi-solid billet passing through the extrusion holes, and a mandrel positioned at a central axis of the bearing; a heater for maintaining a temperature of the semi-solid billet stored in the container constant; a temperature sensor detecting the temperature of the semi-solid billet heated by the heater inside the container; and a control unit comparing the temperature sensor value detected by the temperature sensor with a preset value to control the on/off operation of the heater, wherein the seamless extrudate is in the form of a tube having no welding lines.