JPH03216243A - Method for judging operation in manufacture of quenched metal strip, and method and apparatus for manufacture using this method - Google Patents

Abstract

PURPOSE:To introduce and carry a quenched metal strip at a high velocity and to wind the metal strip without loose and excess tight winding by measuring stresses in both positions at front and rear parts of dancer roll in pass line for the quenched metal strip and judging whether the operational condition is suited or not. CONSTITUTION:By setting an inlet side stress measuring instrument 7 at between a cooling roll 1 rotated at a high velocity and the dancer roll 8 and an outlet side stress measuring instrument 9 at between the dancer roll 8 and a winding device 6, the stresses of quenched metal strip 2 are measured. By using these measured values, the dancer roll 8 is displayed in on-line so that the stress of strip 2 always becomes the fixed value, and after confirming that the stress of strip 2 is within the setting stress, the strip 2 is wound to the winding device 6. By this method, the strip 2 is wound to the winding device 6 without developing the breakage and wound as coil-state without developing unevenness of loose and excess tight winding, etc.

Description

[Detailed Description of the Invention] [Industrial Application Field] [The present invention is directed to cooling rapidly cooled metal ribbons (hereinafter simply referred to as ribbons), such as non-quality metal ribbons manufactured by a single roll method, from cooling rolls. This technology involves guiding and transporting the ribbon to the winding device, and in particular monitors the tension of the ribbon during transportation and applies appropriate tension to prevent the ribbon from sagging due to insufficient tension or breaking due to excessive tension during transportation. This relates to manufacturing technology that enables economical and accurate transportation. [Jubei's technology J In recent years, rapid cooling methods such as single roll method and twin roll method have been used to
The development of manufacturing technology that directly processes molten metal (including alloys; the same applies hereinafter) into thin strips is underway. The first of these direct plate manufacturing technologies is the plate making technology that concerns the uniformity of the plate thickness and surface texture, but when considering industrial production, it is equivalent to the technique for winding into a coil shape. It is important to establish transportation and winding technology. In the case of crystalline metal ribbons with a handling thickness of 100 μm or more, the processing speed is usually 5 m/min due to restrictions on solidification due to heat transfer to the cooling body.
It becomes less than sec. In this case, JP-A-6-1-88
Winding can be carried out using a mesh belt equipped with a clamper and winding using a heat-resistant belt wrapper, as proposed in Publication No. 904. However, in the case of the above-mentioned ribbon, the plate thickness is extremely thin (less than 50 μm), and the plate making speed is usually 20 m/sec.
Because of the above, the technology used for crystalline metal ribbons cannot be applied as is. Moreover, the material properties of the thin strip that is made changes depending on the plate-making speed, and the mechanical strength is often significantly lost. This made it even more difficult to develop winding technology. Furthermore, the thickness of thin strips is less than 50 μm, and therefore the tension required during conveyance, winding, and winding is extremely small. It was difficult to wind the obi efficiently. Japanese Patent Publication No. 57-94453 and Japanese Patent Publication No. 59-344
In Japanese Patent No. 67, the take-up reel is placed close to the cooling roll to avoid the problem of conveyance.

The take-up reel has a magnet embedded in it and a thin ribbon wrapped around it. This method can be said to be a clever method that eliminates the need for troublesome conveying techniques by placing the winder close to the cooling roll. However, in this method, the winding machine is too close to the cooling roll, so it is not necessarily suitable for continuous production. This is by no means the preferred method from an industrial production perspective, as it does not allow enough space to place the tension control device, which is the most important element for winding. In this regard, JP-A-56-12257 and JP-A-59-4377
No. 2, No. 59-138572 and patent application No. 62-290
Publications No. 477 and the like tackle head-on solutions for conveyance technology on the premise that a winder is placed at a remote position from the cooling roll. All of these proposals involve using a suction blower and a brush roll or a brush solid roll as a pinch roll to capture the ribbon for conveyance.

Regarding conveyance, winding, and winding, the ribbon peeled off from the cooling rolls is captured by these pinch rolls without being destroyed, and at the same time the tension necessary for conveyance is applied, and the tension is constantly monitored and controlled. There is no problem as long as the winding and winding are carried out with speed control within an appropriate tension range after the belt is conveyed without causing meandering or breakage. For this reason, it is important to obtain appropriate tension values during transportation, wrapping, and winding. To this end, it is important to always set the tension on the pass line to a certain value while transporting the metal ribbon, and to achieve transport with extremely minimal tension fluctuations. As mentioned above, in order to transport, wrap, and wind up the ribbon peeled off from the cooling roll, the tension must be set at a very low tension value and at high speed during transport, winding, and winding. It is necessary to constantly monitor accurately and with high response speed. Conventionally, the tension of the ribbon being conveyed was measured at an arbitrary position along the pass line. However, with this device and measurement method, it is completely impossible to obtain the extremely low tension output and accurate and fast response speed necessary for conveying, wrapping, and winding the ribbon. Therefore, the conveyance, winding, and
Some improvement was needed in the method and equipment for monitoring the tension value during winding. First, in order to achieve the purpose of winding and winding, the present inventor provided a dancer roll to suspend the metal ribbon before winding the ribbon with a winding device, and the displacement of the dancer roll was was fed back to the winding speed to perform winding control. With this method, we were able to solve some of the problems with wrapping and winding after transportation. Next, in order to carry out transport, winding, and winding more reliably, the tension at the time of transport, the tension at winding, and the tension at winding are monitored either before or after the dancer roll. The tension in the ribbon was monitored. However, there were cases in which the occasional ribbon breakage did not necessarily correspond to the measured value of ribbon tension, making it difficult to diagnose the operational status.

[Problem to be solved by the invention J In order to stably wind a ribbon and solve the drawbacks of the prior art described above, the present invention provides an online measurement method for the tension of a ribbon, a method for manufacturing a ribbon using this measurement method, and a method for implementing this manufacturing method. The aim is to provide manufacturing equipment for this purpose. [Means to solve the problem]

In order to solve the above-mentioned problems, the present invention injects molten metal onto the surface of a rotating cooling roll through a slit-shaped nozzle to produce a rapidly cooled metal ribbon, and the winding is placed at a remote position from the cooling roll. The quenched metal ribbon is continuously wound up by the take-up device, and a tancer roll device is provided between the cooling roll and the take-up device to suspend the quenched metal ribbon, and the quenched metal ribbon is rolled up by the displacement of the dancer roll. Depending on the method of controlling the tension of the ribbon, the tension of the quenched metal ribbon at both positions before and after the dancer school on the pass line of the quenched metal ribbon is measured to determine the suitability of the operating condition. A method for diagnosing operations in the production of quenched metal ribbon, a method for manufacturing a ribbon characterized by controlling the displacement of a dancer roll online based on the above-mentioned measured values, and a method for implementing this manufacturing method. Nozzle for injection of molten metal,
A quenched metal ribbon manufacturing facility equipped with a cooling roll disposed directly below the nozzle and an air knife for peeling the quenched metal ribbon from the cooling roll; and a winding device disposed remotely from the manufacturing facility; A conveyance means for guiding the quenched metal ribbon obtained from the equipment to the winding device; A dancer roll device provided on the conveyance means; Positions before and after the dancer roll device of the pass line of the quenched metal ribbon; a tension measuring means for measuring the tension of the quenched metal ribbon provided in the quenching metal ribbon; 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 manufacturing quenched metal ribbon, which is characterized by being equipped with a. [Operation J] Hereinafter, the present invention will be specifically explained using the drawings.

FIG. 1 is an explanatory diagram showing the configuration of the pass line of the ribbon in the present invention, and FIG. 2 is an explanatory diagram showing the arrangement position of the tension measuring device in the present invention. As shown in FIG. 2, an entrance tension measuring device 7 is disposed between a cooling roll l rotating at high speed and a dancer roll 8, and a winding device 6 is placed between the dancer roll 8 and the winding device 6
An outlet tension measuring device 9 was placed between the two. Next, using this device, the thin strip 2 produced by rapid solidification on the surface of the cooling roll 1 rotating at high speed is peeled off from the cooling roll 1, and then the metal thin strip 2 is peeled off from the cooling roll 1 using the pinch roll 4 loaded on the conveyor truck 3. Experiments were repeated in detail to capture, transport, and wrap the band 2. The conveyance cart 3 traveled and conveyed the thin ribbon 2, and conveyed the thin ribbon 2 to the winding device 6. Next, as shown in FIG. 1, each device enters the line one after another to form a pass line. Figure 3 shows the tension target during conveyance and winding in the conveyance and winding device, and the measured tension values on the entrance and exit sides before and after the dancer roll. As shown in this figure, the displacement of the dancer rolls is controlled online based on the measured values so that the measured values of each tension measuring device completely settle to the target values during transportation, and the configuration of the pass line is adjusted. Once completed, wrap it. The ribbon can be wrapped without breaking.

In addition, by keeping the tension constant during winding, the ribbon does not stick and can be wound into a coil with no uneven winding. Each roll such as dancer roll 8 and tension measuring device 7.9
It is preferable to use an air float type. [Example J Using the apparatus shown in FIG. 1 and FIG. 2, measuring device 7.
No. 8 was used as an air float type for board making, conveyance, and winding under the following conditions. After holding the molten alloy with Feao-Bto-Sig-CI composition (atomic %) at 1300°C, it was injected from a 100 mm wide slit-shaped nozzle directly onto a copper alloy cooling roll rotating at high speed (25 m/sec). , a thin strip 2 with a thickness of 25 μm was produced. The thin strip 2 made into a plate was caught by pinch rolls 4 and transported by a transport cart 3. Each roll and a tension measuring device were put into the line while the conveyor truck 3 was transporting the ribbon 2, and the line was completed when the ribbon passed in front of the winding device 6. The tension measuring device measured the tension as soon as it entered the line and monitored the tension. The tension of the line is measured, and using this measurement value, the dancer roll 8 is displaced online so that the tension of the ribbon is always constant, and the tension of the ribbon is within the tension set at 4 to 5 kg. After confirming that the ribbon is
wrapped around.

The thin strip was wound on the winding device without causing any breakage, and the thin strip was wound into a coil shape without causing any unevenness such as breakage, loosening or tightening of the thin strip, and the winding was completed.6 [Effects of the invention] The present invention has great significance as a production technology because it allows the thin ribbon to be guided and conveyed at high speed without breaking, and to be wound without any unevenness such as loosening or tightening.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing the configuration of the pass line of the ribbon in the present invention, FIG. 2 is an explanatory diagram showing the arrangement position of the tension measuring device in the present invention, and FIG. 3 is an explanatory diagram showing the tension target {- , is an explanatory diagram showing an example of changes over time in the exit tension value and the input tension value. ! ...Cooling roll 2...
Rapidly cooled metal ribbon 3--Transportation truck 4--Pinch roll 5--Suction blower 6--Take-up device 7--Inlet side tension measuring device 8--Dancer roll 9
... Output side tension measuring device

Claims (1)

[Claims] 1. A quenched metal ribbon is manufactured by injecting molten metal onto the surface of a rotating cooling roll through a slit-shaped nozzle, and the quenching is carried out by a winding device located remote from the cooling roll. While continuously winding the metal ribbon, a dancer roll device is provided between the cooling roll and the winding device to suspend the quenched metal ribbon, and the tension of the quenched metal ribbon is changed by the displacement of the dancer roll. A method for controlling the quenching, characterized in that the tension of the quenched metal ribbon is measured at both positions before and after the dancer roll on a pass line of the quenched metal ribbon to determine whether the operating state is appropriate. Operation diagnosis method in metal ribbon manufacturing. 2. A method for producing a rapidly solidified metal ribbon, characterized in that the displacement of the dancer roll is controlled online based on the measured value of the tension according to claim 1. 3. Manufacturing equipment for a quenched metal ribbon, which is equipped with a nozzle for injection of molten metal, a cooling roll placed directly below the nozzle, and an air knife for peeling the quenched metal ribbon from the cooling roll; located separately from the manufacturing equipment. a winding device; a conveying means for guiding the quenched metal ribbon obtained from the manufacturing equipment to the winding device; a dancer roll device provided on the conveying means; a pass line of the quenched metal ribbon; Tension measuring means for measuring the tension of the quenched metal ribbons provided at the front and rear positions of the dancer roll device; and a control means for controlling the displacement of the dancer roll online based on the measured values of the tension measuring means. An apparatus for manufacturing rapidly cooled metal ribbon, characterized by comprising: and;