JPS6358664B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a continuous manufacturing method for a thin ribbon plate manufactured by a molten metal quenching method, and particularly to a continuous winding method during manufacturing.

For example, in general, a method for producing rapidly solidified metal thin strips by the molten metal quenching method involves continuously extruding molten metal from a crucible or the like using gas pressure onto the surface of a cooling roll (usually a metal roll) for quenching that rotates at high speed. It is known as a material that is supplied and solidified by ultra-rapid cooling. Both the single-roll method, which uses only one cooling roll, and the twin-roll method, which uses two cooling rolls, are known for this purpose, but at present, the production amount per batch is only a few kg at most. However, a method for continuously manufacturing large quantities of thin strips has not yet been established. One of the obstacles is that once the winding machine has completed winding up to a predetermined capacity, it is extremely difficult to continuously switch to the next reel.
Generally, when manufacturing thin strips by the molten metal quenching method, it is necessary to always maintain the speed of the cooling roll surface at a high speed of 10 to 50 m/s in the case of amorphous metals. destruction due to heating, occurrence of local thermal expansion, or rapid thickening of the plate thickness.On the other hand, the gap between the roll and the nozzle is, for example, 0.01 to 1.0 mm in the case of manufacturing amorphous metal.
Since the value is maintained at an extremely narrow value, damage to the nozzle may occur, resulting in various problems. Therefore, in order to perform continuous winding and change the take-up reel, it is necessary to do so at high speed, and the conventional method of using a high-speed shear and two tension reels is too fast. It's almost impossible. On the other hand, it is also possible to provide a thin strip storage device such as a loop car between the take-up reel and the quench roll, and when changing the reel, temporarily store the thin strip in this device and then temporarily stop or slow down the reel section to switch. Because the method is fast, the storage capacity of thin strips in a loop car becomes enormous, making it impractical, and the molten metal quenching method
Since the thin strip plates produced are usually extremely thin, about 0.01 to 0.05 mm, it is extremely difficult to control the tension of the thin strip plates using a loop car or the like.

The object of the present invention is to advantageously solve the above-mentioned problems and provide an apparatus that can continuously manufacture a large amount of thin strip plates. That is, the present invention uses a carousel-type winder as a winder when spouting molten metal from a nozzle onto a rotating roll to manufacture a thin strip, and at the beginning of winding, one reel is placed in the vicinity of the quenching device. After the start of winding, the rotary housing is rotated and the next reel is positioned close to the quenching device, and when the winding end point of one reel is reached, the roll is rotated rapidly or by instantaneous tension using a gas jet. The thin strip plate is cut at the paddle part, and winding is started continuously on the next reel, and while the next reel is being wound up and the rotating housing is moving, the thin strip plate on the previous reel is re-wound onto other reels. This is a continuous manufacturing method for thin strip plates produced by a molten metal quenching method.

That is, by using a carousel type reel, the present invention always positions the next reel close to the quenching roll when switching between runs, and temporarily lowers the circumferential speed of the cooling roll when winding the thin strip plate being wound onto the current reel. By increasing the speed, the strip is cut and separated from the part where the end is molten metal, or by instantaneous tension by a gas jet, the paddle section cuts the strip and the tip is reliably captured on the next reel.

Hereinafter, the present invention will be explained in detail with reference to embodiments shown in the drawings.

FIG. 1 shows the overall concept of an embodiment of the present invention, in which 1 is a melting furnace for melting molten metal 2;
It is melted by suitable means such as a high frequency coil (not shown).

The molten metal 2 is transferred to the conduit 4 by operating the stopper 3.
The gas is guided to the intermediate storage tank 5 through the nozzle 7 and continuously ejected onto the rotating cooling roll 8 by gas pressure 6 introduced from the outside. The molten metal spouted onto the cooling roll is rapidly solidified on the roll and the thin strip plate 9
becomes. The thin strip plate 9 is peeled off from the cooling roll 8 by an appropriate peeling means such as gas injection using a gas injection pipe 10 as required, and then the thin strip plate 9 is peeled off from the cooling roll 8 by a known tip catching means having a magnet, an adhesive layer, etc. on the surface, and reel A1.
1. 12 in the figure is a carousel type reel used in the present invention, and a rotating housing 1
3 has two or more reels (in the figure, two reels are shown, including reel A11 and reel B14), and reels A and B can rotate on their own axis for winding and unwinding, and are attached to the housing. 13, it can revolve.

Figure 2 shows a situation where the initial winding has been completed and the reel has begun to revolve. However, in the figure, numbers 1 to 7 and 10 that are not directly related to the present invention are omitted. The thin ribbon plate 9 has already been wound considerably on the reel A11 to form a coil 15.

Figure 3 shows the coil payout position for reel A11 (initial winding position for reel B14)
It shows the situation in which it happened. In this case reel B14
acts as an idler, but in some cases another idler roll may be inserted to avoid contact of the thin strip plate with reel B14, or a dancer roll may be provided in the middle to precisely control tension. It is also possible to do so. In this situation, coil 1
5 reaches a predetermined size, the reel A11 is temporarily rotated at a speed faster than the circumferential speed of the cooling roll 8. Then, since the thin strip plate 9 is still in an unsolidified state near the nozzle, it is easily separated by the liquid portion. Instead of increasing the rotation of the reel, an instantaneous tensile force may be applied by applying a gas jet to the thin strip plate 9 at right angles. The new leading end is then wound onto the reel B14 in the same situation as in FIG.

Figure 4 shows a situation where the thin strip plate 9 is now being wound onto the reel B14, while some of the reels A and B have begun to revolve, and the thin strip plate is being rewound from reel A to the unwinding reel C16. It shows. 17 shows a situation where the thin strip plate being unwound is becoming a coil on the reel C16. 18 is reel B14
It is a thin strip plate wrapped around the top. The reel 17 is a normal expansion/contraction reel, and the coil 17 that has been rewound is removed from the reel C17 by known means such as a coil car and sent to the next process. In this example, the case of unwinding is shown, but reels A and B are expansion and contraction type reels, a sleeve is used to wrap a thin strip plate on top of the reels, and the unwinding is performed by a known means such as a coil car at the unwinding position. Of course, it is also effective to directly take out the sleeve wrapped with the thin strip plate and send it to the next process.

This method is extremely advantageous for mass continuous production of thin strips by quenching molten metal, and has great industrial value.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the winding of a thin strip plate in an embodiment of the present invention, and FIGS. 2, 3, and 4 are explanatory diagrams showing the progress of the winding. 1: Melting furnace, 2: Molten metal, 3: High frequency coil, 4: Conduit, 5: Intermediate storage tank, 6: Gas pressure,
7: Nozzle, 8: Cooling roll, 9: Thin strip plate, 1
0: Gas injection pipe, 11: Reel A, 12: Carousel type reel, 13: Rotating housing, 14: Reel B, 15: Coil, 16: Reel C, 17:
Expandable reel, 18: coil.

Claims (1)

[Scope of Claims] 1. When manufacturing a thin ribbon by spouting molten metal from a nozzle onto a rotating roll, a carousel type winder is used as a winder, and at the beginning of winding, one reel is cooled by a rapid cooling device. After the start of winding, the rotating housing is rotated and the next reel is positioned close to the quenching device, and when the winding end point of one reel is reached, the roll is rapidly rotated or the reel is instantly cooled by a gas jet. The thin strip plate is cut at the paddle part by tension, and winding is started continuously on the next reel. During the winding of the next reel and the movement of the rotating housing, the thin strip plate on the previous reel is wound onto other reels. A continuous manufacturing method for thin strips manufactured by a molten metal quenching method, which is characterized by carrying out repairs. 2 Manufactured by the molten metal quenching method described in claim 1, characterized in that rewinding to another reel is omitted by using a reel in which a sleeve is removably fitted on a carousel type winding machine reel. Continuous manufacturing method for thin strip plates.