Title:
コイル状冷却チャネルを有する焼結ブランク
Document Type and Number:
Japanese Patent JP2006510804
Kind Code:
A
Abstract:
An extrusion press method for production of sintered blanks comprising at least one internal, spirally extending channel, the plastic material forming the blank being pressed out of the mouth of a nozzle of an extrusion press in the form of a substantially circular cylindrical pipe. The plastic material which exits from the mouthpiece of the nozzle in a substantially twist-free manner flows along the axis of at least one spirally twisted pin which is maintained in a stable position on a gudgeon of the nozzle. The pin does not rotate, the plastic material in the mouth is displaced in a twisted flow corresponding to the spiral shape of the pin and the rotational movement of the plastic material is supported by a rotationally driven section of the mouth, which is engaged on the outer periphery of the material such that the pin is essentially not subjected to bending deformation.
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Inventors:
Carros, horst
Application Number:
JP2004561062A
Publication Date:
March 30, 2006
Filing Date:
December 18, 2003
Export Citation:
Assignee:
GUEHRING,Joerg
International Classes:
B22F5/10; B29C48/33; B21C23/01; B21C23/14; B22F3/20; B23B51/04; B23B51/06; B23P15/32; B28B3/20
Attorney, Agent or Firm:
Mamoru Kuwagaki