Metal deforming – Process – Tube making or reshaping
Patent
1998-02-18
1999-08-24
Larson, Lowell A.
Metal deforming
Process
Tube making or reshaping
72398, B21D 5102
Patent
active
059411180
ABSTRACT:
A method for forging a die core with a given shape for manufacturing metallic hollow pipes with a thin wall, the method is completed by using a hollow can shaped plastic film loaded with a filler, the plastic film is endued with embossment in conformity with the shape of a desired shaped pipe wall; the filler can be chosen from three kinds, i.e., the liquid, plastic and heat resistant fillers, to be filled in the plastic film, an opening of the plastic film is then sealed; fast freeze the liquid filler to form a frozen die core, cool the plastic filler to form a plastic die core, or insert a heat resistant steel post in the heat resistant filler and then bake or sinter to harden it to shape the heat resistant die core for hot forging. By such method, a die core for use in cold or hot forging can be placed in a pipe hole of a metallic pipe casting, and suits die moulding by the cold or hot forging, the pipe wall of the casting thus is forged to form an embossed wall conformed in shape to the embossed plastic film, and the die core can be easily taken out of the shaped and embossed pipe after the cold or hot forging.
REFERENCES:
patent: 1339970 (1920-05-01), Murray et al.
patent: 1693487 (1928-11-01), Mansfield
patent: 2821012 (1958-01-01), Rzezutko et al.
patent: 2841082 (1958-07-01), Kirkpatrick
patent: 3964534 (1976-06-01), Rabinowitz
patent: 4186586 (1980-02-01), Takamura et al.
patent: 4270690 (1981-06-01), Mabery et al.
LandOfFree
Die forging method for metallic hollow pipes does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Die forging method for metallic hollow pipes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Die forging method for metallic hollow pipes will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-456926