• 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 for making an instantaneous thermochemical start on the surface of a ferrous metal workpiece, comprising the steps of: (a) contacting a preselected spot on said surface where the reaction is to begin, with the end of a ferrous metal wire which has been heated to its ignition temperature in an oxygen atmosphere, (b) impinging a high intensity jet of oxygen gas on said surface at a point 1 to 15 cm. behind said spot, thereby causing an immediate scarfing reaction to begin and a molten puddle to form at said spot, and (c) continuing the impingement of a high intensity jet of oxygen on said puddle until the puddle has spread to a preselected width. Thereafter, the spreading oxygen stream may be left on and used to carry out the scarfing reaction, or it may be turned off and another oxygen stream may be impinged on the spread puddle at an acute angle to the work surface in order to "take over" and carry out the scarfing reaction. The type of scarfing cut sought will determine the type of scarfing oxygen stream used to "take over" the scarfing reaction from the spreading stream.
    公开号:SU900795A3
    申请号:SU762313304
    申请日:1976-01-12
    公开日:1982-01-23
    发明作者:Огаст Энджел Стивен
    申请人:Юнион Карбид Корпорейшн (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to gas flame processing of metals and can be used in the metallurgical industry and heavy engineering when removing individual defects on the 5 surface of the workpiece.
    A device for surface fire stripping of metal blanks is known, in which a method of fire stripping is implemented, which consists in the fact that a tubular electrode is supplied to the place where the stripping starts and an arc is initiated between the electrode and the workpiece. At the same time through the tubular electrode serves a stream of oxygen, 15 and then the workpiece is moved relative to the cleaning jet of oxygen 1.
    Also known is a method of fire stripping the surface of a metal billet, in which the end of the wire heated to the ignition temperature in oxygen is supplied to the place of the beginning of the stripping, then 25 are supplied at an acute angle to the surface to be treated.
    cleaning the stream of oxygen, and the workpiece is moved relative to the jet 2.
    However, this method requires stopping the relative movement of the workpiece and the stripping jet, which reduces productivity.
    The purpose of the invention is to start the stripping operation without stopping the movement of the workpiece relative to the stripping jet.
    This goal is achieved due to the fact that according to the method, the end of the wire heated to the ignition temperature in oxygen is supplied to the starting point of the stripping, then an oxygen stripper is supplied to the starting point at an acute angle to the surface to be cleaned, and the workpiece is moved relative to the jet to a point on the surface of the workpiece, located at a distance of 1 to 15 cm beyond the mentioned end of the wire, at the moment of contact of this end of the wire with the surface of the workpiece is served an additional
      -; : ;; :) at ID; MCJiopo / i: V., -,:,,, .. y.pney
    ::: -:.. :: :: -50Л2е Пи:; ОКО. . . : H; g: IJit-H Struts KISLOROPU, PS.-;.; O
     : spruce; -; oh jets of oxygen ;;: spola / :: i; oT. from 30 to 80 and izzerk; -1OST 1 obpabateeemoy billet in mg; - By moving the workpiece, and the additional jet axis locates Lod by an angle of 30 to 8G ° of the surface of the workpiece to be prepared in a plane, ger1; endicular to the surface and passing through a straight, perpendicular to the relative change; 11-1 I blanks, and the end r :: - oBO; Oi; - magzuyut continuously. On d) / 1G- 1 one of the var: -gant8 device for carrying out is shown; -; 1I proposed method; in fig: -. - Pid of the nozzle for feeding I cleaned 11, with a jet of oxygen in it, in FIG. in FIGS., cutting options; -P1I devices for carrying out the method; FIG. 10 - supply of stripping oxygen when using the device shown in phi ;. 3 °: -i fig 11 - follower. Gr. Sstroh {ut cutter 1 with p
    c-hole:; th 2 and 3 for gas supply and nozzle for feeding:.; -: och. -. tsayuscheyj jet k to r; t; a2-: oh billet 5i which l. ae | sya from; -media: -th cutter. -. - ,, - -. . | l
    ... h: е-.г: pGBOj OKii Ь serves i; Gerh:, awn billet with by: -::.;. ; t; -k: t With a speed of more l: with: -. hsorest.; ayu-tsei CTpvi, .p ..; .c processed on top- :. H dopo.pni gl; 1 .-; ug o G1od angle.: Ditch 3
    dan: -: points 9 melted metal alla 3 tehzhe zone 10 with molten metal; ,: slag, zone 11, in which ::; :: :: e of yyy the removal of a defect, zo-g-12 E: -sothoy removal of defective flares and a zone of 13 g of soderma; - a mixture of v1; molten.: d, 3 results
    pofil; the surface of the workpiece with a remote defect.
    A series of cutters 15, several devices 1b for feeding wire and nozzles 17 for supplying additional tools 8 are used to strip the defect on the workpiece. These devices are mounted on a drive carriage 18 placed on peelers 13. Each of the cutters 15 contains holes 20 21 for supplying fuel gas and nozzles 22 for supplying cleaning jets of oxygen. The edges of the nozzles 22 contain inserts 23.
    The method is carried out as follows.
    At the beginning, the combustible Cg mixture coming from the cutter 1, which removes surface defects, is formed with the formation of preheating flame, while the combustible mixture is formed using jets of combustible gas entering through a series of holes 2 and 3 and a small stream of oxygen (Figs. 1 and 2. These flames of the pre-heating flame fall on the surface of the workpiece being 5 m deflected upwards so that they heat the end of the wire to those). 1 the temperature ignites in oxygen. When it is damaged; on the area where the removal of surface defects should take place and which is located on the lerekens side of cutting 1 at a speed V / machined;:: ot e 5: reaches the point located. ahead of horse meat iipoEo.nof; M. BK.G: 01 - ayu mechanism 7 of supplying wire / ci, as a result, heats up :: horsepower 6 plots down and forms a proc1 "The contact with the surface, OinozEe; 8 oxygen with: about a speed higher than.:.: / :: orthosis of the scrubbing jet oxygen. which falls on the heated wire which is in contact with the surface of the workpiece. As a result, a bath 9 of molten metal is formed on the surface of the Workpiece.
    The diameter of the nozzle for supplying additional; -; oh jet 8 is 1-5 cm, which ensures the formation of a bath of molten metal with a width of 5 to 35 cm, respectively. The distance between the point of intersection of the axis of the additional jet of oxygen flowing from the additional nozzle The workable surface of the workpiece and the point A of contact of the workpiece, the end of the wire 6 can vary in the range from 1 to 15 cm and is preferably 5-10 cm. The optimum distance between points A and 8 depends on the angle "t-, at which 8 oxygen upstream ravl dissolved on the working surface. The larger the angle specified, the smaller the distance between these points. The dL angle can vary from 30 to 8Q °, preferably it is 50-60 °. If the angle is 30 °, the distance 1e should be maximum and approximately 15 cm, if the angle is 80 °, the minimum distance is used. equal to 1 cm. In this point A and B should not coincide with each other. Fig. 3 shows the time when the heated end of the wire is in contact with point A, lying slightly in front of the defective area on the surface of the moving pile. The arrow indicates the direction of movement of the workpiece 5 at a speed W of approximately 15 m / min. At the same time, the additional stream 8 of oxygen coming from the nozzle causes ignition of the hot end of the wire which is in contact with the surface of the workpiece. This, in turn, melts the zone surrounding point A. The formation of the bath 9 of the molten metal begins. FIG. 4 shows the same zone as FIG. 3, but after about 0.5 s. As the steel workpiece continues to move in the direction indicated by the arrow, the molten metal bath begins to level out under the influence of the oxygen jet 8 to form a blade-shaped shape. In FIG. 5 shows the same zone as in FIG. 3, but after 1 sec. Zone 9 is a bath of molten metal that is distributed on the moving workpiece 5 with the help of a continuous supply of oxygen stream B. At this time, the wire will be fixed. When the molten bath is distributed to a maximum of 956. The width is approximately 25 cm, the supply of the jet of oxygen 8 from the nozzle is stopped, and the supply of the cleaning jet of oxygen from the cutter 1 is increased to remove surface defects. An oxygen wipe jet 1 maintains the molten metal bath, continuing to form a profile on which surface defects are removed in zone 10. The latter contains molten metal and slag located above the molten steel, which did not remove surface defects and which clearly differs from zone 9 containing a fully molten metal bath. FIG. 6 shows the same view as in FIG. 3, but after about 5 seconds and gives an idea of how the reaction can continue. In zone 11, surface defects were removed. Zone 12 is molten metal, but no surface defects were removed in it, and zone 13 is a mixture of slag and molten metal on the steel surface that is not subject to surface defects, 6 time, shown in FIG. 6, wire elevated, the supply of the oxygen jet 8 is stopped, and with the help of the cutter 1, which removes surface defects, the profile is made across the entire width, at which the surface defects are removed. The width of the profile formed by means of a nozzle that removes surface defects is equal to the width over which the bath of molten metal was distributed using a jet of oxygen 8. A cleansing stream of oxygen to remove surface defects is supplied as long as it is required to perform the removal operation for a given defect. The steps following the ignition of the flame plugs for preheating can be automated and implemented using a series of software devices, relays and solenoid valves, so that the operator signal or other appropriate signal will activate and automatically carry out the sequence of the steps described. A second signal is also required to complete the flaw removal process by turning off or reducing the scavenging oxygen stream to a value that is sufficient only to maintain the preheating flame. In this state, the device is again ready to perform the removal of surface defects. In another method of performing the above steps, the stripping jet of oxygen is supplied, removing surface defects simultaneously with the supply of an additional jet of oxygen, leveling the bath of molten metal. FIG. 7 shows a variant of the device shown in FIG. 1, which is mounted on the crown in order to allow the device to be removed to clean surface defects both in the transverse direction along the entire width of the workpiece, and in the longitudinal direction of the workpiece. blanks. This device can be used to selectively clean the surface of defects randomly located on the surface of the workpiece, the device being installed in line with the damaged area, and the device is provided with its continued movement above the damaged area. Zone 14 is sob. A typical profile on which the removal of surface defects was performed using this device option. In this device, the axis of the additional oxygen jet 8 lies in the plane perpendicular to the surface of the workpiece and passing through a straight parallel to the direction of movement of the workpiece, 8 devices for carrying out the method; depicted in FIG. 8, the axis of the additional jet 8 of oxygen lies in the plane perpendicular to the surface of the workpiece and passing through the straight, perpendicular direction of relative movement of the workpiece. In this device, an additional oxygen jet 8 is directed to point B on the right side of the workpiece 5, as a result of which, on a 58 foot, the melted metal is blended in the direction of the left side of the workpiece. This device allows the molten metal bath formed to be distributed more quickly , as a result of which a wider profile can be formed, on which the removal of surface defects is carried out, as compared with the device shown in FIG. 7, in which a nozzle is used to supply an additional jet B of oxygen having the same dimensions. Line 8 can also be located on the left or at any intermediate point. A combination using two such nozzles for supplying additional jets of oxygen can also be used. The device shown in Fig. 7 is used to form the molten metal emki baths, and the device shown in Fig. 8 is used to distribute vanHO4 (i-molten metal, over the workpiece screen. Fig. 9 shows a series of devices to remove surface defects that have nozzles for performing selective multi-profile removal of surface defects across the entire width of the workpiece in a single pass. A series of cutters 15 for cleaning surface defects, corresponding devices i for wire feed Blocks of nozzles 7 for supplying additional jets and fixed pus carriage 18, which can be moved along the rails 9 The device can be moved along the entire length of the workpiece, resulting in a selective width of surface defects produced at its full width cutting, which is ensured by selectively activating each of the nodes that remove surface defects. Although in the device shown in Fig. 9, the workpiece is stationary and the carriage moves Above the workpiece, it is possible and in some cases it is advisable to provide a fixed position for the device performing stripping of noBepxHocTHbix defects.
    990i
    under which the workpiece is moved at the required speed.
    FIG. 10 shows a front view of a device for removing surface defects, in which 5 cutters are used to remove surface defects as shown in FIG. 9. Each of these cutters contains a series of upper and lower openings 20 and 21 for the supply of combustible gas, which are located above and below the nozzle 22 for supplying oxygen, which performs cleaning of surface defects. Typically, the nozzle 22 has a width of 0.6 cm and a length of 20 cm. The edges of the nozzle holes are partially closed with inserts 23. Typically, these inserts are 3 cm long at the lower edge and have a maximum height of 0 cm and contain an inclined profile constituting an internal The scientific research institute has an angle of about 10. Such inserts 23 are located at each end of each hole 22 for supplying a protective jet of oxygen in order to gradually reduce the oxygen flow in the direction of the edges of each cutter.
    As can be seen from the diagram shown in FIG. It is possible to ensure the start of the stripping process of each defective 30 portion of the workpiece 5 without stopping its movement relative to the cutters 15. The end of the wire 6 can be heated continuously.
    The proposed method provides 35 an increase in the productivity of fiery cleaning of defects on the surface of the metallic blank by eliminating the need to stop the relative movement of the blank. 40
    权利要求:
    Claims (3)
    [1]
    Invention Formula
    1, Method of fire stripping the surface of a metal billet, with
    ten
    795
    where the end of the wire heated to the ignition temperature in oxygen is supplied to the starting point of the jammer, then an oxygen scrubbing jet at an acute angle to the surface to be processed, and the workpiece is moved relative to the jet, characterized in that point on the surface of the workpiece, located at a distance of 1 to 15 cm behind the end of the wire, at the moment of contact of this end of the wire with the surface of the workpiece under There is an additional stream of oxygen at an average speed higher than that of the cleaning jet of oxygen.
    [2]
    2. Method pop. 1, which is also distinguished by the fact that the axis of the additional hydrogen chloride is placed at an angle from 30 to 80 ° to the surface of the workpiece in a plane perpendicular to this surface.
    and passing through a straight line parallel to the direction of relative movement of the workpiece.
    [3]
    3. Method pop, 1, marking and with the fact that the axis of the additional jet is placed at an angle
    from 30 to 80 ° to the surface of the workpiece in the plane perpendicular to this surface, to passing through the straight, perpendicular direction of the relative movement of the workpiece.
    k. Method pop.1, distinguished by the fact that the end of the wire is heated continuously.
    Sources of information taken into account in the examination
    1, Patent of France W 2276239, cl. B 23 K 7/06, 20.12.7,
    2. Japanese patent N- / b-ZEZb, cl. 12 В 5, 03/19/71 (prototype).
    -r-y
    mr
    -r sr - rщ з
    eri g, 2
     /
    / T / 1
    W
    w
    V)
    : s
    e
    ".
    "4l
    .5 t
    8018
    bJ
    about
    about
    about
    about
    about
    ABOUT
    类似技术:
    公开号 | 公开日 | 专利标题
    US4084988A|1978-04-18|Method and apparatus for making instantaneous scarfing cuts
    SU900795A3|1982-01-23|Process for flame cleaning of metal workpiece surface
    US2513425A|1950-07-04|Automatic arc-started thermochemical metal removal apparatus
    US2664368A|1953-12-29|External powder feed scarfing process and apparatus
    SU1153816A3|1985-04-30|Cutter nozzle for selective flame correction of individual defects on metal blank surface
    US3608879A|1971-09-28|Device for trimming flash from metal which has been worked with a machining torch
    US3991985A|1976-11-16|Apparatus for making an instantaneous scarfing start
    CA1091557A|1980-12-16|Method and apparatus for making an instantaneous thermochemical start
    US2125176A|1938-07-26|Apparatus for removing metal from the surfaces of metallic bodies
    US2510210A|1950-06-06|Method of thermochemically cutting metal bodies
    US2125179A|1938-07-26|Method of and apparatus for removing metal from the surfaces of metallic bodies
    US2260322A|1941-10-28|Deseaming and desurfacing apparatus and process
    US2302182A|1942-11-17|Bar cutting machine and process
    US4243436A|1981-01-06|Instantaneous scarfing by means of a pilot puddle
    SU1118281A3|1984-10-07|Method of thermomechanical bright finishing of metal articles
    US3216867A|1965-11-09|Thermochemical scarfing process
    SU849989A3|1981-07-23|Device for metal cleaning by fire
    USRE32511E|1987-09-29|Method and apparatus for making instantaneous scarfing cuts
    EP0043822B1|1983-11-30|Deasiming method and multishaped torch for implementing such method
    US20200384663A1|2020-12-10|Scrap Trimming and Sizing Apparatus and Method
    RU2424094C1|2011-07-20|Method gas contact flash welding of strips with feed of protective gas into welding zone and device to this end
    US4287005A|1981-09-01|Instantaneous scarfing by means of a pilot puddle
    US4120703A|1978-10-17|Method and apparatus for reducing smoke and preventing secondary fins during scarfing
    KR20040102730A|2004-12-08|Device for removing oil on strip in welding machine
    US3515189A|1970-06-02|Method of starting a scarfing pass
    同族专利:
    公开号 | 公开日
    GB1540092A|1979-02-07|
    IN155724B|1985-03-02|
    IT1053299B|1981-08-31|
    AU1020176A|1977-07-21|
    NL177667C|1985-11-01|
    NZ179740A|1978-06-02|
    DK9876A|1976-07-14|
    NO145683C|1982-05-12|
    NL7600263A|1976-07-15|
    LU74160A1|1976-11-11|
    US3966503A|1976-06-29|
    NO151610C|1985-05-08|
    JPS5181763A|1976-07-17|
    BR7600121A|1976-08-31|
    ZA757819B|1976-11-24|
    SE447802B|1986-12-15|
    NO802144L|1976-07-14|
    NO144695C|1981-10-21|
    FR2297110A1|1976-08-06|
    YU41558B|1987-10-31|
    BE837490A|1976-07-12|
    PH13832A|1980-10-07|
    ES444220A1|1977-04-16|
    CS226160B2|1984-03-19|
    HU171064B|1977-10-28|
    NO144695B|1981-07-13|
    FI753734A|1976-07-14|
    FR2297110B1|1982-02-05|
    SE7600221L|1976-07-14|
    CA1033595A|1978-06-27|
    NO151610B|1985-01-28|
    NL177667B|1985-06-03|
    DE2600876B2|1978-08-17|
    ATA12676A|1978-04-15|
    JPH0134714B2|1989-07-20|
    AT347204B|1978-12-11|
    DE2600876A1|1976-07-15|
    NO802129L|1976-07-14|
    DE2600876C3|1984-12-20|
    NO145683B|1982-02-01|
    NO760082L|1976-07-14|
    YU4876A|1982-06-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2205890A|1937-06-11|1940-06-25|Linde Air Prod Co|Method of cutting or flamemachining metal|
    US2309096A|1940-01-27|1943-01-26|Linde Air Prod Co|Method and apparatus for conditioning metal bodies|
    US2513425A|1945-01-24|1950-07-04|Linde Air Prod Co|Automatic arc-started thermochemical metal removal apparatus|
    US2438344A|1945-05-19|1948-03-23|Linde Air Prod Co|Automatic rod feed for metal removal|
    US3216876A|1962-02-06|1965-11-09|Polystructures Inc|Method of continuously making fiber reinforced laminated pipe|
    JPS4610936Y1|1967-02-20|1971-04-16|
    GB1267820A|1968-05-16|1972-03-22|Aga Ab|Method of and apparatus for initiating a gas scarfing process of a metal workpiece|
    JPS49129656A|1973-04-18|1974-12-12|
    DE2418482B2|1973-04-18|1975-04-03|Nippon Steel Corp., Tokio|
    SE373057C|1973-05-21|1977-06-16|Centor Maskin Goteborg Ab|PROCEDURE FOR INITIATING AND MAINTAINING A THERMOCEMICAL PROCESS FOR GAS PLATING THE SURFACE ON A PIECE OF WORK AND DEVICE FOR PERFORMING THE KIT|
    JPS649072A|1987-06-30|1989-01-12|Mazda Motor|Rear wheel steering device for vehicle|
    JPH0814331B2|1987-09-30|1996-02-14|株式会社タツノ・メカトロニクス|2-stage switching type on-off valve|USRE32511E|1976-05-10|1987-09-29|L-Tec Company|Method and apparatus for making instantaneous scarfing cuts|
    US4038108A|1976-05-10|1977-07-26|Union Carbide Corporation|Method and apparatus for making an instantaneous thermochemical start|
    US4139757A|1977-03-14|1979-02-13|Centro-Maskin Goteborg Ab|Method and device for igniting gas planing|
    US4115154A|1977-09-26|1978-09-19|Union Carbide Corporation|Method and apparatus for producing a post-mixed, stabilized scarfing pre-heating flame|
    US4287005A|1979-11-05|1981-09-01|Union Carbide Corporation|Instantaneous scarfing by means of a pilot puddle|
    US4243436A|1979-11-05|1981-01-06|Union Carbide Corporation|Instantaneous scarfing by means of a pilot puddle|
    DE3149477C2|1981-12-14|1987-07-09|Naucno-Issledovatel'skij Institut Metallurgii, Celjabinsk, Su|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US05/540,455|US3966503A|1975-01-13|1975-01-13|Method for making instantaneous scarfing starts|
    [返回顶部]