Extrusion dies

Details Extrusion dies Extrusion dies

1988-02-19

1989-09-05

Crane, Daniel C.

Metal deforming

Tool and/or tool holder

Tool comprising closed periphery deforming passageway

722531, B21C 2502

Patent

active

048627283

ABSTRACT:
An extrusion die has a die aperture which is negatively tapered essentially throughout its length at an angle of at least 1.degree. such that any friction stress between the die lands and metal flowing through them is negligible, the length of the lands being not more than 2 mm so that fouling does not significantly take place thereon during extrusion. Faster extrusion speeds can be achieved, particularly when extruding aluminium alloy having a shear strength of from 1.2 to 4.0 Kg/mm.sup.2 at 500.degree. C.

REFERENCES:
patent: 1840472 (1932-01-01), Singer
patent: 2559523 (1951-07-01), Templin
patent: 2671559 (1954-03-01), Rosenkrantz
patent: 3364718 (1968-01-01), Green
patent: 4064723 (1977-12-01), Larsson et al.
Aluminum vol. III, Fabrication and Finishing, from American Society for Metals, Metals Park, Ohio, 1967, pp. 91, 92.
Akeret, R., "Influence of Cross-Sectional Shape and Die Design in Extrusion of Aluminum Part II Friction in the Die Land" from Aluminum, vol. 59, No. 10, 1983, pp. E355-60.
Bello, L. B., Aluminum Extrusion Die Correction, 1st Ed., Fellom Puplications, San Francisco, page Bearing FIG. 27.
Pearson, C. E. et al., The Extrusion of Metals, Second Edition, John Wiley & Sons, Inc., New York, N.Y., 1960, pp. 195, 196.
Pearson, C. E. et al. The Extrusion of Metals, Second Editon, John Wiley & Sons, Inc., New York, N.Y., 1960, pp. 113-115.

Affiliated with

Also associated with

Rating

Extrusion dies does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Extrusion dies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extrusion dies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-234023