• 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 method is provided for manufacturing rubbing surfaces of cast iron comprising a perlitic or ferritic basic structure or matrix and free graphite.
    公开号:SU854276A3
    申请号:SU762379667
    申请日:1976-07-09
    公开日:1981-08-07
    发明作者:Харлфингер Рудольф；Эхэхальт Теобальд；Каппес Альфред
    申请人:Ауди Нсу Ауто Унион Аг (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to methods for treating a sliding surface of cast iron, in particular of cast iron, consisting of a perforated or ferritic substrate and free graphite. A known method for treating sliding surfaces of cast iron, such as hollow cylinders for internal combustion engines, includes mechanical treatment — boring, grinding, grinding and cooling Tl. A disadvantage of the known method is the length of the grinding process of the rubbing surfaces necessary to prevent welding of the sealing elements to the sliding surface. The aim of the invention is to reduce the processing time of the sliding surface. The goal is achieved by the fact that the sliding surface is additionally subjected to electrochemical etching in a 2% solution of sodium chloride at a current density of 1020 A / dm for 20 s - 1. As a result of electrochemical etching, the main structure is deposited on a graphite particle during the mechanical treatment of the sliding surface, which leads to an improvement in the antifriction properties of the surface. Example. A billet of pearlitic iron containing 0.3-0.5% Cg and about 3% free graphite with a sliding surface brought by machining — grinding, polishing, grinding with superfinishing to a final size with a roughness depth of 2–3 µm, is degreased and set on the anode plate electrode so that the sliding surface is open. At a distance of about 12 mm from the sliding surface, a cathode lamellar electrode made of copper is installed. Everything is placed in a 2% solution of common salt. The operating current density is 12 A / dfl (calculated on the glide surface) etching time is 45 s. In this case, the metal deposited on the particles of graphite, as a result of the mechanical processing of the sliding surface, is completely removed, and the part is ready for operation at full load.
    Processing the sliding surfaces of the cylinders of internal combustion engines according to the proposed method makes it possible to completely eliminate the engine run-in on the test bench and reduce the initial period of operation, when
    the motor should operate in partial load mode approximately twice as long as the duration of the same period. engine operation, the sliding surfaces of which are made by a known method.
    权利要求:
    Claims (1)
    [1]
    1. Gurin F.V. Automotive technology. M., Mechanical Engineering, 5 1975, p.205-210.
    类似技术:
    公开号 | 公开日 | 专利标题
    US2314604A|1943-03-23|Method of producing chromium wearing surfaces
    SU854276A3|1981-08-07|Method of treatment of sliding surface
    US3932228A|1976-01-13|Metal material for sliding surfaces
    US2468006A|1949-04-19|Electrolytic cleaning of metal
    Shinmura et al.1984|Study on Magnetic--Abrasive Process--Finishing Characteristics
    US4528079A|1985-07-09|Method of mitigating boundary friction and wear in metal surfaces in sliding contacts
    US3877854A|1975-04-15|Relative combination of apex seal and rotor housing in rotary piston internal combustion engine
    ES8304462A1|1983-03-01|Process for treating surfaces of cast iron that contains carbon, as well as apparatus for carrying out the process and cylinder consisting of a grey cast iron casting.
    US3689387A|1972-09-05|Method for electropolishing spark gap machined parts
    FR2452531A1|1980-10-24|METHOD OF ELECTROLYTIC PLATING OF AN ALLOY ON A STEEL STRIP
    US3728051A|1973-04-17|Iron or steel components of a rotary piston machine
    DE3520984C1|1987-02-05|Process for producing a wear-protection layer on a cylinder bore wall
    SU818841A1|1981-04-07|Method of hydroabrasive working
    RU2242338C2|2004-12-20|Method of anode-mechanical honing
    SU1740490A1|1992-06-15|Method for reconditioning of worn-out steel parts
    US4543170A|1985-09-24|Method of producing accurately scaled, well-defined surfaces of work pieces from carbonaceous cast iron with tribologic properties
    GB1480037A|1977-07-20|Rotor for rotary internal-combustion engines
    RU2152543C1|2000-07-10|Method of running-in kinematic friction pairs
    SU757289A1|1980-08-23|Method of electric spark hardening of cast iron parts
    JPH0586966A|1993-04-06|Wet type cylinder liner and manufacture thereof
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    RU2241783C1|2004-12-10|Method for applying antifriction coatings
    FR2308707A1|1976-11-19|Machining metallic working surfaces - by combined electrochemical erosion and honing using oil-in-water emulsion as electrolyte
    SU537782A1|1976-12-05|Electrochemical treatment method
    SU1766952A1|1992-10-07|Lubricant-coolant liquid metal honing
    同族专利:
    公开号 | 公开日
    JPS5210836A|1977-01-27|
    GB1543067A|1979-03-28|
    FR2317046B1|1980-05-30|
    DE2531013A1|1977-01-27|
    FR2317046A1|1977-02-04|
    US4204924A|1980-05-27|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US240107A|1881-04-12|Peters |
    BE489626A|1948-06-29|
    FR1132666A|1955-10-04|1957-03-14|Method and device for treating engine cylinders to increase their wear resistance|
    FR1273987A|1960-09-09|1961-10-20|Jacquet Hispano Suiza Soc|Improvements made to processes to improve the friction and rolling conditions of shafts, toothed wheels, etc.|
    JPS5242134B2|1972-12-30|1977-10-22|
    JPS533446B2|1973-11-01|1978-02-07|DE2921471C2|1979-05-26|1982-10-14|Aeg-Elotherm Gmbh, 5630 Remscheid|Camshaft for diesel engines|
    DE3119847C2|1981-05-19|1983-12-29|Audi Nsu Auto Union Ag, 7107 Neckarsulm|Cylinders of a reciprocating internal combustion engine made of gray cast iron, method for machining surfaces of a workpiece made of carbon-containing cast iron, in particular cylinders, and device for carrying out the method|
    DE3217818C2|1982-05-12|1987-01-29|Audi Ag, 8070 Ingolstadt, De|
    DE3300938A1|1983-01-13|1984-07-19|Peter 7442 Neuffen Nagel|METHOD AND DEVICE FOR PROCESSING SURFACES|
    US4528079A|1983-05-25|1985-07-09|Miracle Metals, Inc.|Method of mitigating boundary friction and wear in metal surfaces in sliding contacts|
    JP6416614B2|2014-12-18|2018-10-31|川崎重工業株式会社|Engine supercharger|
    CN105132999B|2015-09-08|2017-11-21|江苏理工学院|Electrolyte for the processing of 42CrMo steel gear double peak pulse current electrochemical copolymerizations machinery polishing|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE19752531013|DE2531013A1|1975-07-11|1975-07-11|METHOD FOR PRODUCING SLIDING SURFACES FROM CAST IRON|
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