JPH07102435B2 - Operation diagnosing method in manufacturing quenched metal ribbon, manufacturing method and manufacturing apparatus using this method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a quenching metal ribbon (hereinafter simply referred to as a ribbon) such as an amorphous metal ribbon produced by a single roll method, to a cooling roll. Related to the technology of guiding and transporting from the winding device to the winding device, especially by monitoring the tension during the transport of the ribbon and giving an appropriate tension, it prevents slack due to insufficient tension of the ribbon during transport and breakage due to excessive tension. By doing so, the present invention relates to a manufacturing technique that makes it possible to carry out transportation economically and accurately.

[Conventional technology]

In recent years, quenching methods such as single roll method and twin roll method
Development of manufacturing technology for directly processing molten metal (including alloys; the same applies below) to thin ribbons is underway. The first of these direct plate-making technologies is plate-making technology relating to the uniformity of plate thickness and surface properties, but when industrial production is considered, it is equivalent to that for coiling. Establishment of transport and winding technology is essential.

In the case of a crystalline metal ribbon having a plate thickness of 100 μm or more, the plate-making speed is usually 5 m / sec or less due to the restriction of solidification due to heat transfer to the cooling body. In this case, it is possible to wind by transporting with a mesh belt having a clamper and winding with a heat-resistant belt wrapper as proposed in JP-A-61-88904.

However, in the case of the above-mentioned ribbon, the plate thickness is extremely thin as 50 μm or less, and the plate-making speed is usually 20 m / sec or more, so that the technique used for the crystalline metal ribbon cannot be directly applied. Moreover, since the thin strip to be formed changes the material properties depending on the plate making speed, and often loses the mechanical strength remarkably, the plate making speed is also changed when winding or rewinding on the take-up reel. It could not be changed, which made the winding technology more difficult to develop.

Furthermore, the thin strip has a plate thickness of 50 μm or less, and therefore, the tension required for transporting, winding, and winding is very small. It was difficult to wind the belt efficiently.

In JP-A-57-94453 and JP-B-59-34467, the take-up reel is arranged close to the cooling roll to avoid the problem of conveyance. The take-up reel is embedded with a magnet and wound with a thin strip.

This method can be said to be a clever method in which the troublesome conveying technique is made unnecessary by disposing the winding machine in the vicinity of the cooling roll.

However, this method is not always suitable for continuous production because the winder is too close to the chill roll. In addition, it is not a preferable method in consideration of industrial production, because it is impossible to secure a space for installing an inspection device for the plate thickness, holes, etc. and for arranging a tension control device which is most important for winding.

In this respect, JP-A-56-12257, 59-43772, and 59-13
In Japanese Patent No. 8572 and Japanese Patent Application No. 62-290477, etc., the transport technology is solved from the front, on the assumption that the winding machine is arranged at a remote position of the cooling roll. These are all
With the suction blower, it is proposed that a brush roll or a brush / solid roll be used as a pinch roll for capturing a thin strip for transport.

Concerning transportation, winding and winding, the ribbon stripped from the chill roll is not broken and is captured by these pinch rolls, and at the same time the tension required for transportation is applied, and the tension is constantly monitored and controlled. As a result, there is no problem if speed control is performed in an appropriate tension range and winding and winding are performed after the sheet is conveyed without causing meandering and breaking. Therefore, it is important to obtain an appropriate tension value during transportation, winding and winding. For that purpose, it is important that the tension of the pass line is always set to a certain value during the transportation of the thin metal strip so that the transportation of the tension fluctuation is extremely small.

As described above, in order to convey, wind and wind the strip stripped from the chill roll, the tension is increased in order to convey at high speed with a very small tension value during conveyance, winding and winding. It is necessary to monitor accurately with a high response speed.

Conventionally, the tension of a ribbon being conveyed at an arbitrary position on the pass line has been measured. However, with this apparatus and measuring method, it is completely impossible to obtain an output of extremely low tension and an accurate and fast response speed required for carrying, winding and winding a thin strip. Therefore, some kind of ingenuity was required in the method and device for monitoring the tension value during conveyance, winding, and winding of the thin strip.

In order to achieve the purpose of winding and winding, the inventor first
A dancer roll was installed until the ribbon was wound up by the winding device, the metal ribbon was suspended, and the displacement of the dancer roll was fed back to the winding speed to control the winding. By this method, the problems in winding and winding after conveyance could be solved to some extent. Next, in order to transport, wind, and wind more reliably, the tension during transport, the tension during winding,
The ribbon tension was monitored either before or after the dancer roll to monitor the tension during winding. However, occasional breakage of the ribbon and a case where the measured values of the ribbon tension do not always correspond to each other, which made it difficult to diagnose the operating condition.

[Problems to be Solved by the Invention]

In order to solve the above-mentioned drawbacks of the prior art, the present invention implements a method for measuring the tension of a ribbon online, a method for producing a ribbon using this method, and a method for producing the same. It is intended to provide a manufacturing apparatus for doing so.

[Means for Solving the Problems]

In order to solve the above problems, the present invention manufactures a cooling metal ribbon by injecting molten metal through a slit-shaped nozzle on the surface of a rotating cooling roll, and winding wound at a position remote from the cooling roll. The quenched metal strip is continuously wound by a take-up device, and a dancer roll device is provided between the cooling roll and the winding device to suspend the quenched metal strip, and the quenched metal is displaced by the displacement of the dancer roll. In a method for controlling the tension of a ribbon, the tension of the quenched metal ribbon is measured at both positions before and after the dancer roll on the pass line of the quenched metal ribbon to determine the suitability of the operating state. A method for diagnosing an operation in the production of a quenched metal ribbon, a method for producing a ribbon characterized in that the displacement of a dancer roll is controlled online based on the above-mentioned measured values, and a method for implementing the method. For, injection nozzle of the molten metal,
A quenching metal ribbon manufacturing facility equipped with a cooling roll arranged directly under the nozzle and an air knife for peeling the quenching metal ribbon from the cooling roll; a winding device arranged separately from the manufacturing facility; Transporting means for guiding the quenched metal ribbon obtained from the equipment to the winding device; dancer roll device provided in the transporting means; positions of the pass line of the quenched metal ribbon in front of and behind the dancer roll device And a control means for controlling the displacement of the dancer roll online based on the measured value of the tension measuring means. The present invention provides an apparatus for producing a quenched metal ribbon.

[Action]

 Hereinafter, the present invention will be specifically described with reference to the drawings.

FIG. 1 is an explanatory view showing a state of a ribbon pass line according to the present invention, and FIG. 2 is an explanatory view showing an arrangement position of a tension measuring device according to the present invention.

As shown in FIG. 2, the entrance tension measuring device 7 is arranged between the cooling roll 1 and the dancer roll 8 which rotate at high speed, and the exit tension measuring device 9 is arranged between the dancer roll 8 and the winding device 6. Was placed.

Next, using this apparatus, the thin strip 2 produced by cooling and solidifying on the surface of the cooling roll 1 rotating at a high speed is peeled from the cooling roll 1, and then the metal thin film is peeled off by the pinch roll 4 loaded on the transport carriage 3. The experiment of capturing, transporting and winding the strip 2 was repeated in detail. The transport carriage 3 traveled to transport the ribbon 2 and then to the winding device 6.

Next, as shown in FIG. 1, each device sequentially enters the line to form a pass line.

FIG. 3 shows the tension target at the time of transport / winding in the transport / winding device and the measured tensions at the inlet and outlet sides before and after the dancer roll. As shown in this figure, the displacement of the dancer roll is controlled online based on the measured values so that the measured values of each tension measuring device will completely settle to the target values during transportation. Wrap when completed. The ribbon can be wound without breaking. In addition, by keeping the tension constant during winding, the ribbon does not stick and the winding can be carried out as a coil without uneven winding.

It is preferable that each roll such as the dancer roll 8 and the tension measuring devices 7 and 9 are of an air float type.

〔Example〕

Using the devices shown in FIGS. 1 and 2, measuring devices 7, 8
Was an air float type and was subjected to plate making, carrying and winding under the following conditions.

Fe ₈₀ -B ₁₀ -Si ₉ -C ₁ composition (atomic%) of molten alloy at 1300 ℃
Then, it was injected from a slit-shaped nozzle having a width of 100 mm directly above a cooling roll made of a copper alloy which rotates at a high speed (25 m / sec) to produce a thin strip 2 having a plate thickness of 25 μm.

The plate-made thin strip 2 was caught by a pinch roll 4 and conveyed by a conveyance carriage 3. Each line and the tension measuring device were put in the line while the carrier 3 was carrying the ribbon 2, and the line was completed when the ribbon passed in front of the winding device 6. The tension measuring device measured at the time of entering the line to monitor the tension.

The tension of the line is measured, and the dancer roll 8 is displaced online so that the tension of the ribbon is always constant by using this measured value, and the tension of the ribbon enters within the tension set to 4 to 5 kg. After confirming that the ribbon was wound, the thin strip was wound around the winding device 6.

The ribbon was wound on the winding device without causing breakage, and was wound into a coil without causing unevenness such as breakage, loosening and tightening of the ribbon, and the winding was completed.

〔The invention's effect〕

According to the present invention, the ribbon can be guided / conveyed at high speed without breaking, and can be wound without causing unevenness such as loosening / tightening of the ribbon, which is extremely significant as a production technique.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a constitution state of a thin pass line in the present invention, FIG. 2 is an explanatory view showing an arrangement position of a tension measuring device in the present invention, FIG. 3 is a tension target value in the present invention, It is explanatory drawing which shows an example of the time-dependent change of an exit side tension value and an entrance side tension value. 1 ... Cooling roll, 2 ... Cooling metal ribbon 3 ... Conveyor cart, 4 ... Pinch roll, 5 ... Suction blower, 6 ... Winding device, 7 ... Inlet tension measuring device, 8 ... Dancer roll 9: Output side tension measuring device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toru Sato 1 Kawasaki-cho, Chiba-shi, Chiba Inside Kawasaki Steel Co., Ltd. Technical Research Headquarters (56) Reference JP-A-1-254358 (JP, A)

Claims (3)

[Claims] 1. A quenching metal ribbon is produced by injecting a molten metal onto a surface of a rotating cooling roll through a slit-shaped nozzle, and the quenching metal thin film is wound by a winding device arranged at a position remote from the cooling roll. While winding the strip continuously, a dancer roll device is provided between the cooling roll and the winding device to suspend the quenched metal ribbon, and the displacement of the dancer roll controls the tension of the quenched metal ribbon. In the method, the tension of the quenched metal ribbon is measured at both positions before and after the dancer roll on the pass line of the quenched metal ribbon, and the suitability of the operating state is judged. Operation diagnosis method in belt manufacturing. 2. A method of manufacturing a quenched metal ribbon, characterized in that the displacement of the dancer roll is controlled online based on the measured value of tension according to claim 1. 3. A quenching metal ribbon production facility comprising a nozzle for injecting molten metal, a cooling roll arranged immediately below the nozzle, and an air knife for peeling the quenching metal ribbon from the cooling roll; A winding device arranged at a distance; a conveying means for guiding the quenched metal ribbon obtained from the manufacturing facility to the winding device; a dancer roll device provided in the conveying means; Tension measuring means for measuring the tension of the quenched metal ribbon provided at positions before and after the dancer roll device on the pass line; and on-line displacement control of the dancer roll based on the measured value of the tension measuring means. A device for manufacturing a quenched metal ribbon, characterized by comprising: