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US 2007/0164456 A1Published application
Repaired extrider dies and repairing method therefor
AssigneeDenso Corporation
InventorHitoshi Kanmura
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AssigneeDenso Corporation
InventorHitoshi Kanmura
Estimating the term…
A method is provided for repairing a die for molding a structure. A die to be repaired has holes for supplying a material, grooves arranged in a lattice form for communicating with the respective holes and for forming the material into a desired shape, and worn-out portions caused by repeated use. In the method, a repairing film is formed on a surface having the grooves and serving as an end face of a die body, through which extrusion is performed, so as to extend onto each corner at an intersecting line between the groove-formed surface and an inner side face of each groove, to restore each worn-out portion. Meanwhile, a material is supplied from the groove-formed surface side utilizing either one or both of PVD and CVD processes. This method readily provides a repaired die with good accuracy, which is excellent in durability and abrasion resistance.
A method for repairing a used extrusion die being used to form a structural body, the die having a first surface, a lattice-shaped groove thereon, a through-hole which communicates with the groove, and a worn-out corner where the first surface crosses an inner wall of the groove, the method comprising steps of;
A method for manufacturing an extrusion die which is used to extrusion-mold a structural body, the die having an surface with a groove thereon, a through-hole communicating with the groove, and a corner where the surface crosses a wall of the groove, the method comprising;
A die for extrusion-molding a structural body comprising:
Dependencies are inferred from the claim text.