Metal band heating method

专利摘要:
A process of treating metal strips using a linear electric motor with spaced apart motor elements comprises directing the metal strips into the space between the motor elements and operating the motor to produce a travelling wave and advancing the strip between the motor parts without contact thereof at a velocity greatly reduced with respect to the velocity of the linear electric motor wave so as to produce a slippage between the wave and the strip and to effect the heating of the strip as it is advanced. The apparatus includes a linear electric motor including a first motor unit spaced away from a second motor unit in the form of a linear motor or return bar so as to form a gap therebetween through which the metal strip is advanced. The apparatus includes means for feeding the strip through straightening rolls and cropping shears, S-rollers and coiling and uncoiling reels.
公开号:SU727154A3
申请号:SU762425243
申请日:1976-12-07
公开日:1980-04-05
发明作者:Шпоренберг Вилли；Вагнер Райнгольд
申请人:Зундвигер Айзенхютте Машиненфабрик Гра Унд Ко(Фирма)；Алюминиум Норф Гмбх (Фирма)；
IPC主号:

专利说明:

one
This invention relates to methods for the continuous, non-contact heating of metal tapes during heat treatment.
The known method of heating a metal tape by an electromagnetic traveling field, which is carried out in the known installation 1. However, unintended and uncontrollable heating occurs in this installation, which does not ensure uniform heating of the ribbon at a high transport speed.
The aim of the invention is to ensure uniform heating of the tape across the entire width at high speed of transporting it with an electromagnetic traveling field.
 This is achieved by moving the belt at a speed of 20–60 m / min. The speed of the electromagnetic field is maintained at 60–100 m / s, and when the aluminum tape is heated within 380–580 ° C, the tensile force in it is not exceeding 1 kg / mm
This method is carried out in the installation shown in FIG.
The apparatus comprises a coiler winder 1, a tail tension drum 2, a device for straightening 3, scissors for cutting the ends of the tape 4, S-shaped rollers 5 and 6, a furnace with an electromagnetic running field 7,
scissors 8, tension drum 9 and coiler 10 on which metal tape 11 is wound. A cross-section of the furnace with an electromagnetic running field 7 is shown in FIG. 2
It consists mainly of two blocks 12 and 13 of an electric motor with a linearly moving rotor.
The moving field is created by an electric motor with linearly moving
rotor. An electric motor with a linearly moving rotor can be an asynchronous motor, the package of steel sheets of the stator of which is cut radially and bent to the same surface, i.e. in the form of an inductor comb.
Instead of a rotating floor, as in an asynchronous motor, arises
thus moving field. Electric motors with linearly moving pOvopOM are located with their working surfaces symmetrically to the surface of the tape and thus form a gap
14 to pass the tape.
The maximum width of a metal lerth 3.1 can be equal to w: -this rotor of an inductor comb block of an electric motor. To protect the surface inductor of an electric motor with a linearly moving rotor, rotated to a metal tape. coated with a protective layer.
3 —shaped rollers 5 provide for the transfer of the tape to the slit 4, - and the centering of the tape within the slit occurs due to the action of a moving floor, which is created by an electric motor with a linear motion of the rotor.
With this method, rapid heating is achieved due to the high speeds between the leading and moving field and the metal slowly moving in the same direction: lx: eskim tape. Depending on the throughput of the furnace and the allowable minimum belt tension (VKOpocTb the moving field is 60–100 m / s, while the metal belt moves at a speed of 20–60 m / min. the speed of the moving floor and / or the driving force of the moving floor.
In this way, a fine adjustment of the speed of the metal strip is achieved, which occurs in a known manner by means of drive S-shaped rollers and coilers.
In particular, the rates of heating and movement are controlled depending on the metal billet, the thickness of the billet and the desired heat treatment. For example, the proposed method can also produce thermo-mechanical forks. This is possible because the tape is heated on one side and at the same time is under tension. In addition, heat treatment is possible, at which the heat treatment temperature does not exceed 700 ° C. So, for example, with steel tapes, heat treatment, tempering, etc. are possible, and the Referral method is especially applicable to metal tapes made from non-ferrous metals, such as - Thermo-thermal | 5-flow occurs at low temperatures of 400-650 ° C. Special advantages of the proposed method are achieved with the use of aluminum LENE. In this case, the heat treatment takes place at a temperature of 380-580 ° C, on;
When aluminum is used, the moving field and belt speed agree with each other, that high-speed heating occurs on the single side, and on the other hand, a specific tensile effect in the region of the heated tape lies below the heat-resistance limit of the aluminum tape.
Thus, the tensile effect with aluminum tape in the area of the heated tape should not exceed I c g / mm g
Practice has shown that with aluminum, and 3 particularly with aluminum and manganese alloys, due to fast and above all uniform heating over the entire width of the tape, fine-grained structures and improved strength characteristics (ratio of yield strength to tensile strength) reach
With other metal tapes, it is recommended not to exceed the allowable first loading values in the area of the heated tape in the area of the heated tape. Damage to the surface of the tape does not occur, since inductive forces keep it between two fields moving so that no contact points occur.
On fig.Z it is shown that this method provides uniform and fast heating across the entire width of the tape. In this case, an aluminum tape with a thickness of 2 mm and a width of 200 mm is pulled at a speed of 18 m / min through a moving field, which moves at a speed of 60 m / s.
According to the Width of the tape in three places, the temperature was measured and recorded that uniform heating was ensured over the entire width of the tape. The total heating time at 420s was 13 seconds.
The invention can be applied not only for the purpose of heat treatment, but also for drying, calcining lacquers, and the like.

权利要求:
Claims (1)
[1]
1. USSR author's certificate number 111539, cl. On 21/29/00, 1957.
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同族专利:

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公开号 | 公开日

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FR2334755A1|1977-07-08|

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FR2334755B1|1983-01-28|

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DE2556057B1|1977-06-16|

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US4124415A|1978-11-07|

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CA1081328A|1980-07-08|

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DE2556057C2|1982-04-01|

---

GB1539743A|1979-01-31|

引用文献:

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公开号 | 申请日 | 公开日 | 申请人 | 专利标题

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US2005901A|1932-07-29|1935-06-25|Westinghouse Electric & Mfg Co|Induction sheet heater|

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US2887422A|1950-02-25|1959-05-19|United Eng Foundry Co|Method of continuously heat treating aluminum strip|

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US2748240A|1952-07-29|1956-05-29|Magnethermic Corp|Induction heating systems|

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DE1085979B|1955-01-27|1960-07-28|Magnethermic Corp|Electric induction preheater for metallic workpieces|

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DE1216782B|1963-04-01|1966-05-12|Max Baermann|Device for achieving a state of suspension of goods consisting of electrically conductive, non-ferromagnetic material in the form of tapes, pipes and similarly shaped elongated objects, preferably during the conveying process through a continuous furnace|FR2445085B1|1978-12-22|1981-12-18|Courdille Rene|

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FR2509562B1|1981-07-10|1984-06-29|Cem Comp Electro Mec|

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FR2523395B1|1982-03-12|1984-06-01|Cem Comp Electro Mec|

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FR2616004B1|1987-05-25|1994-08-05|Metalimphy|METHOD AND INSTALLATION FOR PRODUCING PARTS FOR MAGNETIC USE|

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GB8902090D0|1989-01-31|1989-03-22|Metal Box Plc|Electro-magnetic induction heating apparatus|

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DE4013582C1|1990-04-24|1991-07-11|Mannesmann Ag, 4000 Duesseldorf, De|

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EP3006579B1|2014-12-11|2017-06-07|Aleris Aluminum Duffel BVBA|Method of continuously heat-treating 7000-series aluminium alloy sheet material|

法律状态:

优先权:

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申请号 | 申请日 | 专利标题

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DE2556057A|DE2556057C2|1975-12-12|1975-12-12|Method and device for heating metal strips, in particular non-ferrous metal strips|

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