• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A cavitation erosion resistant and lubricated wear resistant plain bearing comprising a steel backing, a sintered bronze interlayer and a lining of PTFE filled with 1 to 50% by volume of a chemically stable hydroxide, preferably crystalline AI(OH).
    公开号:SU1627094A3
    申请号:SU864027169
    申请日:1986-03-14
    公开日:1991-02-07
    发明作者:Джон Дэвис Глиндвр
    申请人:Аеплс (Фирма)；
    IPC主号:
    专利说明:


    g (/
    The invention relates to maiipostroenie, in particular to the slide bearing.
    The purpose of the invention is to provide wear resistance against erosion and improve oil resistance.
    Antifriction material (PTFE) contains polytetrafluoroethylene and a hydroxide additive in the form of crystalline aluminum hydroxide A1 (OH) | J in an amount of 5-50% by volume of material. The dispersion of polytetrafluoroethylene should preferably be 0.01-10 microns. Additionally, the antifriction material may contain lead 10-20 vol.%. The total amount of hydroxide and lead should not exceed 50 vol.%.
    The hydroxide additive in the form of crystalline aluminum hydroxide Al (OH) j, inert to both acids and alkalis, loses water very slowly during the sintering of the PTFE crystal lattice, leaving residual hydroxide groups in the finished material. The solubility of hydroxide in water is below 0.05 g per 100 cm3 at 18 ° C. The adverse effect of water solubility may be related to the method of mixing the aggregate in PTFE, which is carried out in an aqueous suspension using water spraying of PTFE.
    The filled PTFE molded products are made by known techniques and tested on a research machine at a speed of 2 cm / min. Table 1 presents the averaged results.
    As you can see, the tensile strength of PTFE from 20 vol. A1 (OH) 9 is higher than with other filling compositions and is comparable with the strength of unfilled PTFE,,
    Bronze agglomerate on a steel substrate is saturated and coated with a new composition with known techniques and tested together with similar samples of well-known supporting bearing materials. The oil resistance of the proposed bearing material and the resistance of the known support bearing materials are presented in table. 2 (results of a 20-hour test for flushing wear of a lubricated support).
    Table 3 shows the results of tests comparing ultrasonic cavitation erosion of the proposed bearing material with the erosion of known support bearing materials.
    As can be seen from Tables 2 and 3, under the conditions of wear and cavitation erosion, the characteristics of the material proposed are superior to known materials.
    Table 4 shows the crush strength, average wear and erosion resistance for a PTFE matrix filled with Al (OH) j with a particle size of 0.5 μm at a hydroxide content of 1, 5, 50, and 60 vol.%.
    The results show that with a hydroxide content of 1 and 60 vol.%, The characteristics are low, while with a content of 5 and 50 vol.%, The characteristics are satisfactory.
    Filling material
    Unfilled PTFE
    10% by volume of crystalline A1 (OH) 20 v L fiberglass
    20 about L bronze 20% vol. Carbon fiber
    20 vol.% Powdered coke
    20 round mica 20 about L graphite 20 about L MoS2
    0
    five
    five
    0
    0
    The proposed anti-friction material for sliding bearings shows increased resistance to cavitation erosion and a significant improvement in oil resistance.
    I
    权利要求:
    Claims (4)
    [1]
    1. Antifriction material for sliding bearings, including polytetrafluoroethylene, characterized in that, in order to ensure wear resistance against erosion and to improve oil resistance,
    it additionally contains a hydroxide additive in the form of crystalline aluminum hydroxide, chemically stable under normal conditions of operation of polytetrafluoroethylene, in an amount of 5-50% by volume of antifriction material.
    [2]
    2. A material according to claim 1, wherein the dispersion of polytetrafluoroethylene is -0.01-10.0 µm.
    [3]
    3. A material according to claim 1, characterized in that it additionally contains lead of 10-20% by volume.
    [4]
    4.Material on PP. 1 and 3, characterized in that the total content of the hydroxide additive and c-vinca is not more than 50% by volume.
    Table 1
    Tensile strength (molded) psi
    3000-5000 4500
    1800-3000 1500-2000
    2000
    2000 2900 2300 1800
    1627094
    table 2
    Filling Average material average wear, micron wear,
    (load micron 2 100 kg / cm2) 500 kg / cm load
    Unfilled PTFE 25 30 20 vol.% Crystalline
    Al (OH)
    20 vol.% Lead 5 20 20 vol.% Mo5g 20 30
    --------- chg -------
    Table 3
    t
    Filling Average Volume Loss
    Ј a
    material 10 cm, during erosion, min
    .jiIIZE
    20 vol.% Crystalline
    A1 (OH) ,, 050.02
    20% by volume - pigs 3.88.1
    20 vol.% MoS28,515,2
    Table 4
    Soder-Other-Medium-Medium
    Nosthe volumetric
    A1 (OH) at once, mkmpoteri,
    about% jerk (for-10 cm
    form load2 (15 minutes) 100 kg / cm erosion
    pounds
    on apt.
    inch
    3500
    4100
    1000
    760
    0.1 0.05 0.1 0.13
    类似技术:
    公开号 | 公开日 | 专利标题
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    同族专利:
    公开号 | 公开日
    JPH0134538B2|1989-07-19|
    ES553024A0|1987-06-01|
    US4657683A|1987-04-14|
    DE3660391D1|1988-08-18|
    GB2172296A|1986-09-17|
    MX166889B|1993-02-11|
    CA1286829C|1991-07-23|
    EP0194893A2|1986-09-17|
    AU577933B2|1988-10-06|
    CN86101638B|1988-02-10|
    CS178786A2|1990-02-12|
    ES8706236A1|1987-06-01|
    KR860007487A|1986-10-13|
    JPS61213254A|1986-09-22|
    YU38886A|1989-02-28|
    IN167182B|1990-09-15|
    PL147533B1|1989-06-30|
    AR247228A1|1994-11-30|
    GB2172296B|1988-07-06|
    CS271324B2|1990-09-12|
    EP0194893A3|1986-11-12|
    ZA861891B|1987-10-28|
    GB8506807D0|1985-04-17|
    AU5470286A|1986-09-18|
    KR910003136B1|1991-05-20|
    BR8601099A|1986-11-25|
    EP0194893B1|1988-07-13|
    CN86101638A|1986-12-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3224966A|1962-03-07|1965-12-21|Honeywell Inc|Low friction material|
    DE1961833B2|1969-12-10|1976-08-12|Glyco-Metall-Werke Daelen & Loos Gmbh, 6200 Wiesbaden-Schierstein|SLIDING BEARING LAYER AND METHOD FOR MANUFACTURING IT|
    IT1048805B|1974-04-03|1980-12-20|Du Pont|COMPOSITIONS OF FLUORINE CARBIDE POLYMERS|
    US4000982A|1975-04-10|1977-01-04|Taiho Kogyo Co., Ltd.|Bearing material|
    JPS6143572B2|1977-12-14|1986-09-29|Daido Metal Co|
    JPS5634221B2|1978-11-14|1981-08-08|
    DE3027409A1|1980-07-19|1982-02-25|Karl Schmidt Gmbh, 7107 Neckarsulm|COMPOSITE SLIDE BEARING MATERIAL|
    GB2100366B|1981-05-19|1985-02-27|Int Research & Dev Co Ltd|Polytetrafluoroethylene solid lubricant materials|
    US4501676A|1982-05-19|1985-02-26|International Research & Development Company|Polytetrafluoroethylene solid lubricant materials|JPH0150765B2|1986-10-29|1989-10-31|Ndc Kk|
    GB2219305A|1988-05-31|1989-12-06|Ipari Fejlesztesi Bank Rt|Oil-based lubricant for lubricating and/or sliding surfaces containing aluminium oxide powder|
    US4919829A|1988-12-30|1990-04-24|The United States Of America As Represented By The Secretary Of Commerce|Aluminum hydroxides as solid lubricants|
    GB2242613A|1990-04-03|1991-10-09|Brian Charles Tregenna|Disposable collector for animal faeces|
    JP3213193B2|1995-02-01|2001-10-02|大同メタル工業株式会社|Sliding composition and sliding member|
    GB2319067B†|1996-11-06|2000-06-28|T & N Technology Ltd|Forming a bearing|
    BR9807032A|1997-01-29|2000-03-14|Dana Corp|Process for manufacturing a circular cut bearing, bearing arrangement, and dry bearing material.|
    US6348000B1|1998-02-13|2002-02-19|Ap Time Limited|Torsional vibration dampers|
    FR2825764B1|2001-06-07|2003-09-19|Hispano Suiza Sa|SMOOTH BEARING PROVIDED WITH A FRICTION COATING AND METHOD FOR PRODUCING THE SAME|
    DE10223836C1|2002-05-28|2003-07-31|Enginion Ag|Solid body sliding pair used for machine components exposed to high pressure and high temperature comprises sliding elements containing slip additive in the form of hydroxide compound which is incorporated in the base material before use|
    US7754287B2|2006-05-31|2010-07-13|E. I. Du Pont De Nemours And Company|Process for forming filled bearings from fluoropolymer dispersions stabilized with anionic polyelectrolyte dispersing agents|
    WO2008047561A1|2006-09-28|2008-04-24|Daikin Industries, Ltd.|Slide member and fluid machine utilizing the same|
    US20140170409A1|2011-05-13|2014-06-19|University Of Florida Research Foundation, Inc|Low-wear fluoropolymer composites|
    DE102011112552B4|2011-09-06|2020-11-26|Knorr-Bremse Systeme für Schienenfahrzeuge GmbH|Control valve for automatic compressed air brakes with sliding guide means|
    CN103016532A|2012-12-03|2013-04-03|瓦房店科信精密关节轴承有限公司|Self-lubricating material used for joint bearing and application method of self-lubricating material|
    CN104816754A|2015-05-08|2015-08-05|新乡艾迪威汽车科技有限公司|Automobile steering gear rack supporting mechanism|
    CN105545406B|2015-12-30|2016-10-26|张安|A kind of internal combustion engine and lubrication system thereof|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    GB08506807A|GB2172296B|1985-03-15|1985-03-15|Plain bearing material incorporating polytetrafluoroethylene and plain bearings incorporating such a material|
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