Process for the manufacture of compacts in a powder press

Details Process for the manufacture of compacts in a powder press Process for the manufacture of compacts in a powder press

2007-05-01

2007-05-01

King, Roy (Department: 1742)

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

C419S038000

Reexamination Certificate

active

10225747

ABSTRACT:
A process for the manufacture of compacts, particularly cemented-carbide cutting blades, by compressing metallic powder and subsequently sintering the compacts wherein the compacts are formed in a powder press having a die-plate, an upper ram and at least one lower ram which are associated with a die-bore and are adapted to be actuated by a hydraulic press cylinder with the rams having associated thereto force-measuring devices and path-measuring devices to measure the compression forces during the ram feed motion up to the final positions, wherein the value of the energy to be applied by the upper ram is stored for a compact of predetermined geometry and dimensions and a predetermined material, that the overall energy to be applied by the upper and lower rams is further stored as a second value, that the feed motion of the upper ram is completed when the energy applied by the ram has reached the predetermined first value and the feed motion of the lower ram is effected depending on the application of the residual energy and is completed when the overall energy has reached the predetermined second value.

REFERENCES:
patent: 3640654 (1972-02-01), Smith
patent: 3687586 (1972-08-01), Hara et al.
patent: 3826599 (1974-07-01), DeSantis et al.
patent: 4260346 (1981-04-01), Anderson et al.
patent: 4443171 (1984-04-01), Dixon
patent: 4946634 (1990-08-01), Shaner
patent: 5326242 (1994-07-01), Katagiri et al.
patent: 5379688 (1995-01-01), Ishii
patent: 5391069 (1995-02-01), Bendzick
patent: 5498147 (1996-03-01), Katagiri et al.
patent: 5547360 (1996-08-01), Yokoyama
patent: 5566373 (1996-10-01), Seimetz et al.
patent: 5906837 (1999-05-01), Link et al.
patent: 5989487 (1999-11-01), Yoo et al.
patent: 6004120 (1999-12-01), Matsubara et al.
patent: 6383447 (2002-05-01), Nakata et al.
patent: 6402493 (2002-06-01), Matsubara et al.
patent: 6403025 (2002-06-01), Goransson
patent: 6477945 (2002-11-01), Imanishi et al.
patent: 6531090 (2003-03-01), Ogawa
patent: 40 09 608 (1990-11-01), None
patent: 42 09 767 (1993-05-01), None
patent: 197 17 217 (1999-12-01), None
patent: 199 58 999 (2001-04-01), None
ASM Handbook, vol. 7, Powder Metallurgy, 1984, pp. 322-338.

Affiliated with

Also associated with

Rating

Process for the manufacture of compacts in a powder press does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the manufacture of compacts in a powder press, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the manufacture of compacts in a powder press will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3724992