Method and apparatus for forming a thixoforged copper base alloy

Ammunition and explosives – Cartridges – Case

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

102430, 164900, 29 13, 29 131, F42B 926, F42B 928

Patent

active

044944616

ABSTRACT:
A process and apparatus for forming a thin-walled, elongated member having superior strength properties from an age hardenable copper base alloy is described herein. A slug or billet of a slurry cast, age hardenable copper base alloy is formed into a semi-solid slurry having about 10% to about 30% of the alloy in a liquid phase. The semi-solid slurry is then thixoforged to form the thin-walled, elongated member. Thereafter, the member is age hardened to provide a product having desired strength properties. The process and apparatus of the instant invention may be utilized to form cartridge casings.

REFERENCES:
patent: 1303727 (1919-04-01), Rice
patent: 2031315 (1936-02-01), Jennison
patent: 2034562 (1936-03-01), Davis et al.
patent: 2190536 (1940-02-01), Staiger
patent: 2430419 (1947-11-01), Edens
patent: 2698268 (1954-12-01), Lyon
patent: 2789900 (1957-04-01), Hannon
patent: 2851353 (1958-09-01), Roach et al.
patent: 3209691 (1965-10-01), Herter
patent: 3364016 (1968-01-01), Mikawa
patent: 3399057 (1968-08-01), Richardson et al.
patent: 3416915 (1968-12-01), Mikawa
patent: 3498221 (1970-03-01), Hilton et al.
patent: 3877375 (1975-04-01), Barr
patent: 3902544 (1975-01-01), Flemings et al.
patent: 3936298 (1976-02-01), Mehrabian et al.
patent: 3948650 (1976-04-01), Flemings et al.
patent: 3951651 (1976-04-01), Mehrabian et al.
patent: 3954455 (1976-05-01), Flemings et al.
patent: 4073667 (1978-02-01), Caron et al.
patent: 4106956 (1978-08-01), Bercovia
patent: 4401488 (1983-08-01), Prinz et al.
patent: 4415374 (1983-11-01), Young et al.
"Rheocasting Processes", by Flemings et al., AFS International Cast Metals Journal, Sep., 1976, pp. 11-22.
"Die Casting Partially Solidified High Copper Content Alloys", by Fascetta et al., AFS Cast Metals Research Journal, Dec., 1973, pp. 167-171.
"Copper-Rich Nickel-Aluminum-Copper Alloys. Part I-The Effect of Heat-Treatment on Hardness and Electrical Resistivity", by Alexander, W. O. et al., Journal of the Institute of Metals, vol. 61, 1937, pp. 83-102.
"Copper-Rich Nickel-Aluminum-Copper Alloys. Part II-The Constitution of the Copper-Nickel-Rich Alloys", by Alexander, W. O., Journal of the Institute of Metals, vol. 63, 1938, pp. 163-189.
"Copper-Rich Nickel-Alumium-Copper Alloys, Part III-Effect of Heat Treatment on Microstructure", by Alexander, W. O., Journal of the Institute of Metals, vol. 64, pp. 217-230.
"The Metallography of Fracture in Cast Nickel Aluminium Bronze", by Culpan et al., Journal of Materials Science, (1978), pp. 323-328.
"Pre-Primary Phase Formation in Solidification of Nickel-Aluminum Bronze", by Feest et al., Metals Technology, Apr., 1983, vol. 10, pp. 121-124.
"Observations on the Structure and Properties of Wrought Copper-Aluminum-Nickel-Iron Alloy", by Cook et al., Journal of the Institute of Metals, vol. 80, pp. 419-434.
"Tempering of Cast Nickel-Aluminium Bronze", by Hasan et al., Metal Science, vol. 17, Jun., 1983, pp. 289-295.
"Zerfall Martensitischer Phasen in Aluminiumbronzen", by Hunger et al., Z. Metallkde., (1960), pp. 394-403.
"Influence of Microstructure on the Stress-Strain Behaviour of Two-Phase Copper-Rich Cu-Al Alloys", by Linden, Materials Science and Engineering, (1979), pp. 5-14.
"The Fracture Toughness of a Nickel-Aluminium Bronze", by Barnby et al., Journal of Materials Science, (1977), pp. 1857-1861.
"The Creep and Fatigue Properties of Some Wrought Complex Aluminium Bronzes", by McKeown et al., Journal of the Institute of Metals, vol. 83, pp. 69-79.
"Microstructural Characterization of Cast Nickel Aluminium Bronze", by Culpan et al., Journal of Materials Science, (1978), pp. 1647-1657.
David I. Sinizer, "Aluminum-Copper-Nickel", Metals Handbook 1948 Edition, p. 1243.
Van Vlack; "Elements of Materials Science 2nd Ed; Addison-Wesley Publishing Corp., Inc.; 1964, pp. 154-155.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method and apparatus for forming a thixoforged copper base alloy does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for forming a thixoforged copper base alloy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for forming a thixoforged copper base alloy will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-561171

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.