Title:
METHOD FOR PRODUCING POROUS SEMIPRODUCTS FROM ALUMINIUM ALLOYS POWDER
Document Type and Number:
WIPO Patent Application WO/2003/008133
Kind Code:
A1
Abstract:
The invention relates to powder metallurgy and can be used for producing porous materials having high thermal and sound insulation and energy absorption combined with light mass, incombustibility and the ecological cleanness thereof. According to said invention, during mixing a powder of an aluminium alloy with porophores, the powders of aluminium oxide and aluminium hydroxide ranging from 1 to 10 % and crushed particles of secondary aluminium alloys of the dimensions ranging from 0.5 to 4.5 mm are added to the powder mixture. The particles are mixed in an atrittor until a mechanically alloyed powder alloy is obtained. The powder mixture being heated, it is poured in a vertical container which vibrocompacts the mixture and maintains the temperature thereof. Afterwards, said mixture is transferred to the rectangular groove of a rolling mill in order to carry out a continuous hot compaction in a dead groove of horizontal rollers at a temperature ranging from 430 to 500 °C according to the following condition: H = h x $g(g) x $g(a), where H is an opening between rollers along the arc of contact in mm, h is the thickness of the produced sheet, $g(g) is a compaction ratio of the powder, $g(a) is an experimental ratio equal to 1.5$m(G)$g(a)$m(G)4.5. Said invention reduces production cost by using aluminium alloy refuses, expanding the range of sheets and plates and increases the efficiency of the production thereof.
Inventors:
Litvintsev, Alexander Ivanovich (Osenniy blvd, 10-1-32 Moscow, 9, 12160, RU)
Litvintsev, Sergei Alexandrovich (Bulvar Osenniy, 10-1-32 Mosocw, 9, 12160, RU)
Litvintsev, Boris Alexandrovich (B. Cheremuschkinskaya, 22-7 Moscow, 8, 11721, RU)
Shainsky, Alex (1342 Scenic Drive, Esconido, CA, 92029, US)
Litvintsev, Sergei Alexandrovich (Bulvar Osenniy, 10-1-32 Mosocw, 9, 12160, RU)
Litvintsev, Boris Alexandrovich (B. Cheremuschkinskaya, 22-7 Moscow, 8, 11721, RU)
Shainsky, Alex (1342 Scenic Drive, Esconido, CA, 92029, US)
Application Number:
PCT/RU2002/000288
Publication Date:
January 30, 2003
Filing Date:
June 11, 2002
Export Citation:
Assignee:
Soukholinski-mestetchkin, Sergey Leonidovich (Jasmine Street 1-10, Kfar-Saba, IL)
Litvintsev, Alexander Ivanovich (Osenniy blvd, 10-1-32 Moscow, 9, 12160, RU)
Litvintsev, Sergei Alexandrovich (Bulvar Osenniy, 10-1-32 Mosocw, 9, 12160, RU)
Litvintsev, Boris Alexandrovich (B. Cheremuschkinskaya, 22-7 Moscow, 8, 11721, RU)
Shainsky, Alex (1342 Scenic Drive, Esconido, CA, 92029, US)
Litvintsev, Alexander Ivanovich (Osenniy blvd, 10-1-32 Moscow, 9, 12160, RU)
Litvintsev, Sergei Alexandrovich (Bulvar Osenniy, 10-1-32 Mosocw, 9, 12160, RU)
Litvintsev, Boris Alexandrovich (B. Cheremuschkinskaya, 22-7 Moscow, 8, 11721, RU)
Shainsky, Alex (1342 Scenic Drive, Esconido, CA, 92029, US)
International Classes:
B22F3/11; B22F3/18; C22C1/08; C22C32/00; (IPC1-7): B22F3/11
Attorney, Agent or Firm:
Litvintsev, Boris Alexandrovich (B. Cheremuschkinskaya, 22-7 Moscow, 8, 11721, RU)
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