Forming die apparatus

Details Forming die apparatus Forming die apparatus

2006-08-22

2006-08-22

Goodman, Charles (Department: 3724)

Cutting

Tool with either work holder or means to hold work supply

C083S124000, C083S620000, C083S914000

Reexamination Certificate

active

07093526

ABSTRACT:
A method of manufacturing a billet for cold forging according to the present invention is characterized by the first spheroidizing annealing step of spheroidizing a carbide in a blank, the drawing step of drawing the blank at a predetermined sectional area reduction ratio after the first spheroidizing annealing step, and the second spheroidizing annealing step of promoting the dispersion of the internal carbide for an increased spheroidizing ratio after the drawing step. The drawing step has a drawing ratio of approximately 20%. The blank is cut to a desired dimension between said first spheroidizing annealing step and said second spheroidizing annealing step.

REFERENCES:
patent: 2604164 (1952-07-01), Gavurin
patent: 2772735 (1956-12-01), Wakelee
patent: 3119292 (1964-01-01), Schmid
patent: 3211034 (1965-10-01), Andris
patent: 3440909 (1969-04-01), Bernet et al.
patent: 3570343 (1971-03-01), Wolnosky et al.
patent: 4267753 (1981-05-01), Bennett
patent: 4463637 (1984-08-01), Delio et al.
patent: 4785695 (1988-11-01), Riley
patent: 5247862 (1993-09-01), Haack
patent: 5845553 (1998-12-01), Kooken et al.
patent: 6009783 (2000-01-01), Taijonlahti et al.
patent: 6035688 (2000-03-01), Nagao et al.
patent: 58-215237 (1983-12-01), None
patent: 60-102245 (1985-06-01), None
patent: 7-034190 (1995-02-01), None
patent: 7-097656 (1995-04-01), None
patent: 7-300653 (1995-11-01), None
patent: 9-176785 (1997-07-01), None
patent: 9-176786 (1997-07-01), None

Affiliated with

Also associated with

Rating

Forming die apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3647381