• 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:
    To apply a coating of a non-ferrous metal such as, for example, zinc to the surface of rolled steel to increase the corrosion resistance, it is proposed to descale the rolled steel continuously downstream of the rolling step from the rolling pass by applying pressurised water and, immediately after descaling and while preventing a renewed formation of scale, to cool it by means of water rapidly to a temperature suitable for hot application of the coating and finally to apply the coating. One of the advantages of the invention is that, both for descaling and for preventing the renewed formation of scale and for simultaneous cooling, only a single medium, namely water, is used, and the cooling can be controlled in such a way that the rolling pass can be exploited in an optimised manner for the coating. The result is that all process steps or treatment processes can proceed as a continuous extension of the rolling step, i.e. at rolling speed, so that the finished coated end product leaves the production line analogously to a normal, not aftertreated rolled product.
    公开号:SU1674689A3
    申请号:SU884356320
    申请日:1988-08-26
    公开日:1991-08-30
    发明作者:Айхер Макс
    申请人:Штальверк Аннахютте Макс Айхер Гмбх Унд Ко, Кг (Фирма)；
    IPC主号:
    专利说明:

    The method is carried out as follows.
    Scale is removed from rolled steel with a continuous rolling process. Rolled is treated with water under pressure, while the surface of the steel immediately after the removal of scale to prevent the formation of new scale with water is rapidly cooled to a temperature below 6 ° C, after which the coating is applied.
    The advantage of the invention lies primarily in the fact that a single medium, namely water, is used to remove scale, prevent the formation of new scale and cooling, so that cooling can be carried out so that rolling heating is optimally used for coating or the processes are carried out with a continuous rolling process and they can be driven with such a rolling speed that the final product leaves the production line as well. as not processed hire.
    When the surface of the steel was treated with water under very high pressure, the scale generated with i-hire, which, when formed, is in the last Yu network, for example. The transition from the oval to the circular cross section, which has already received loosening, is completely and easily removed from the rental surface. The water pressure should be above 200 bar, preferably / i is naturally bar, and if necessary can be increased to 1000 bar. This requires very short treatment, namely the passage of the car through the spray nozzle, as a result of which the temperature of the steel bar will be very slightly reduced. .
    Descaling using water under pressure is carried out at 900-1000 ° C. According to the invention, the continuation of treatment with water in a continuous process using the same medium leads to cooling, and so that the formation of scale about 600 ° C decreases rapidly to avoid forming a new scale, and setting the temperature at which the coating can be applied. To this end, rental can be passed through a water bath or sprayed from a nozzle. Appropriate temperature for applying corrosion-resistant coatings. The yield is, for example, for pure aluminum at 560-570 ° C. for pure zinc, about 415 ° C. When doping, intermediate stages can be created. For doping, you can use any
    the coating, as the material being rolled goes through all the temperature ranges from rolling heat to full cooling. The coating is carried out by any method. The non-ferrous metal forming the coating can be applied in the form of a powder, while it melts, rolling can also be passed through a bath with a liquid non-ferrous metal.
    0 Water treatment ensures the protection of the rolled stock after descaling and the formation of a new scale, as well as the protection of the layer of the applied coating until the full cooling of the rolled product. In many cases, additional protection in the form of another layer of synthetic resin, for example, epoxy, is applied to the coating, for example, from zinc. These processes can be integrated in the proposed method with
    0 by using residual heat.
    Cooling is simple according to the invention after descaling can be carried out by any and known heat treatment methods in which water is used, for example, by the method known as Tetroger for poor coal and welding of reinforcing steel, with clor cr - use water as follows. that in the rolled product, immediately after quenching, the marginal zone is formed of martensite and bainite. while the heat left in the core of the steel during the subsequent cooling does not allow transition during tempering
    5 edge zone through bainitic structure. The high carbon steel suitable for use as tension reinforcement steels are processed so that from the final rolling temperature between AV 860 and 1060 ° C while cooling in the boundary joint, a fully martensitic structure and the temperature of the boundary layer are formed due to temperature equalization in time 2- 6 s
    5 after the start of the cooling process is 400-500 ° C. The cooling carried out according to the invention is advantageously used to increase the strength of the steel.
    0 The advantage of the invention is that all work processes are carried out along a continuously running, adjacent directly to the rolling process cycle in a separate steel processing plant located behind the last stand. The process of rolling billets, which is conducted intermittently until they leave the last stand, can be turned into continuous by pre-bonding the workpieces (mainly by butt welding) in the zone between the exit from the furnace or the trio stand and the first pass of the thin rolling line.
    权利要求:
    Claims (7)
    [1]
    Claim 1. A method for treating steel rolled stock, predominantly reinforcing steel, wire, including removing scale from rolled products coming from rolling heat after deformation, applying a non-ferrous metal coating, preferably zinc, that is in order to increase the corrosion resistance, immediately after descaling, the rolling surface is continuously cooled to the coating temperatures below 600 ° C, while cooling is carried out with water under a pressure of 200-1000 bar, but in the range of 300-400 bar.
    [2]
    2. A method according to claim 1, characterized in that the cooling is carried out by transporting the rental through a container with water.
    [3]
    3. A method according to claim 1, characterized in that the treatment with water is carried out by means of nozzles.
    [4]
    4. A method according to claim 1, characterized in that the coating is carried out by spraying a powdered metal.
    [5]
    5. A method according to claim 1, characterized in that the coating is carried out by passing the car through a bath with the melt.
    [6]
    6. A method according to claim 1, characterized in that an additional layer, for example epoxy resin, is applied to the coating.
    [7]
    7. A method according to claim 1, characterized in that the cooling of the rolling surface is carried out before the formation of martensite or bainite therein.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1674689A3|1991-08-30|Roller steel treatment method
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    EP0650790B1|2002-08-14|Method for thermal surface treatment in a continuous casting machine and relative device
    KR20020053292A|2002-07-05|Method And Device For Manufacturing A Hot Rolled Steel Strip
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    US4242153A|1980-12-30|Methods for hot rolling and treating rod
    US4527408A|1985-07-09|Method and Apparatus for cooling and handling hot rolled steel rod in direct sequence with a high speed rolling operation
    CA1265421A|1990-02-06|Method and apparatus for cooling rolled steels
    US4314860A|1982-02-09|Method for direct heat treating hot rolled steel wire rod
    EP0582180B1|1998-06-24|Heat treatment process for wire rods
    US3369923A|1968-02-20|Method of producing heavy coatings by continuous galvanizing
    US3989231A|1976-11-02|Heat treatment of steel
    JP3175111B2|2001-06-11|Manufacturing method of tough direct patented wire rod
    KR100985370B1|2010-10-04|Continuous Hot-dip Coating Line of Hot Rolled Steel Strip and Method for Continuous Hot-dip Coating Hot Rolled Steel Strip
    US3826693A|1974-07-30|Atmosphere controlled annealing process
    RU2040556C1|1995-07-25|Method of making strips of low-carbon hot rolled steel
    SU1715882A1|1992-02-28|Method of depositing aluminum coat on moving rolled steel
    US3928090A|1975-12-23|Heat treatment of steel
    GB2194186A|1988-03-02|Method of rolling steel workpieces
    EP0170463B1|1990-05-30|Method for rolling and heat treating small diameter stainless steel rod
    JPS5518562A|1980-02-08|Method and apparatus for manufacturing galvanized steel strip for deep drawing
    EP0760720A1|1997-03-12|Process for producing sturdy, wear-resistant rotating wire, rope and/or cable running surfaces, especially surfaces of wire drawing drums of wire drawing machines or similar conveyor rollers or drums
    RU1786115C|1993-01-07|Process for producing heat treated rolled low-carbon and low-alloy steels
    同族专利:
    公开号 | 公开日
    EP0305914B1|1991-12-18|
    EP0305914A3|1989-08-09|
    HUT52178A|1990-06-28|
    DD282246A5|1990-09-05|
    HU203586B|1991-08-28|
    ES2028964T3|1992-07-16|
    NO883781D0|1988-08-24|
    DE3729177C1|1989-01-05|
    PT88371B|1993-02-26|
    NO176578C|1995-04-26|
    NO883781L|1989-03-02|
    DK460688A|1989-03-02|
    EP0305914A2|1989-03-08|
    PT88371A|1989-07-31|
    GR3004067T3|1993-03-31|
    CA1306391C|1992-08-18|
    JPH0445591B2|1992-07-27|
    DE3866998D1|1992-01-30|
    JPS6475692A|1989-03-22|
    PL158408B1|1992-08-31|
    AT70568T|1992-01-15|
    PL274389A1|1989-04-17|
    CN1031724A|1989-03-15|
    NO176578B|1995-01-16|
    DK460688D0|1988-08-17|
    引用文献:
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    RU2573304C2|2014-03-11|2016-01-20|Федеральное Государственное Бюджетное Образовательное Учреждение Высшего Профессионального Образования Пензенскй государственный университет архитектуры и строительства|Increasing life and hardness of rod- and pipe-type reinforcements|
    DE202016008333U1|2016-04-08|2017-08-01|Andrey Senokosov|Device for cleaning riser pipes, in particular in petroleum equipment|US2442485A|1944-06-24|1948-06-01|Frederick C Cook|Method of descaling and coating hot-rolled ferrous metal|
    DE1602129B1|1967-06-21|1970-08-27|Roechlingsche Eisen & Stahl|Cooling pipe for cooling rolled material|
    DE2108314A1|1970-08-05|1972-02-10|VEB Schwermaschinenbau-Kombinat Ernst Thallmann Magdeburg, χ 3011 Magdeburg|Rapid cooling rolled rod - of structural steel by a controlled - water quench method|
    DE2353034B2|1972-10-31|1980-03-13|Centre De Recherches Metallurgiques- Centrum Voor Research In De Metallurgie, Bruessel|Process for improving the mechanical strength values of rolled steel products|
    DE3125146A1|1981-06-26|1983-01-13|Woma-Apparatebau Wolfgang Maasberg & Co Gmbh, 4100 Duisburg|Device for descaling hot steel ingots|BE1005964A6|1992-06-29|1994-04-05|Centre Rech Metallurgique|Protection method of hot rolled steel product.|
    GB2313382A|1996-05-23|1997-11-26|Vidal Henri Brevets|Metal coating|
    DE19828827C1|1998-06-27|2000-07-20|Grillo Werke Ag|Thermal sprayed corrosion layer for reinforced concrete and method of manufacturing the same|
    DE102004059008A1|2004-12-08|2006-06-14|Volkswagen Ag|Coating metal components comprises selectively applying a less noble metal than that of the component|
    CN202925384U|2012-10-29|2013-05-08|厦门新钢金属制品有限公司|Complex coating ballastless track board insulation reinforcing steel bar|
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    US20150218815A1|2014-01-31|2015-08-06|Mortar Net Usa, Ltd.|Corrosion resistant structural reinforcement member|
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    CN106040755B|2016-07-16|2018-02-27|太原科技大学|Cathodic protection rollgang equipped with conductive carrying roller|
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    CN107794476A|2017-09-11|2018-03-13|常熟市双羽铜业有限公司|A kind of corrosion resisting steel structural member|
    CN109821923A|2019-02-26|2019-05-31|桂林理工大学|A kind of production method of anti-corrosion coating plain bar|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE3729177A|DE3729177C1|1987-09-01|1987-09-01|Process for treating rolled steel to increase resistance to corrosion|LV930903A| LV5416A3|1987-09-01|1993-06-30|Seeding of the rolling mill|
    LTRP1020A| LT2587B|1987-09-01|1993-09-21|THE ROLE OF ROLLED STEEL PROCESSING|
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