JP2005000996A5 - - Google Patents

Claims (2)

  The lower end surface in contact with the container die having the inner groove penetrated is a plane perpendicular to the central axis of the container, and the lower end surface of the container and the upper part and one side part are above and perpendicular to each other. The upper surface of the die, which is a groove released in the space in the direction formed, and is formed so that the upper surface is flat, is arranged so as to contact each other and the groove portions of each die are connected to each other, and the material is placed in the container. By pushing the material into the die groove part in the direction of the central axis of the container with the pusher arranged at the entrance, the material is extruded from the die groove part to the side perpendicular to the central axis, and the die is rotated on the gantry. A torsional upside-down extrusion method that is carried out while rotating the container around its central axis.   Both the outer diameter of the lower part of the container having a circular outer cross section of the lower outer surface having a cylindrical inner groove penetrated and the outer diameter of the upper part of a cylindrical die having a circular cross section of the upper outer surface , Made slightly smaller than the inner diameter of a holder having an inner groove with a circular cross section passing through, the container and the die are placed in the holder so that the container is on the top, and the container and the die are not in contact with each other And a hole having a maximum height of T or less and a lateral width smaller than the diameter of the holder, and this portion is formed between the container and the die. The container was loaded into the container with a hollow portion communicating with the upper air and the side air formed by being arranged so as to be connected to the gap portion of the height T of the groove as a groove for processing. The material is pushed downward by a pusher disposed at the entrance of the container to increase the diameter of the material and extrude the material from the side, and the die and the holder are fixed to the gantry so as not to rotate. A torsional upside-down extrusion method that rotates around a shaft.