JPS6012145B2 - Manufacturing method of alloy thin plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a thin metal sheet, in which a thin metal sheet is continuously manufactured from metal in a molten state, and the thin metal sheet is immediately wound up.

Generally, the manufacturing method of continuously supplying molten metal onto the surface of a rotating roll and cooling and solidifying it to create a continuous thin metal sheet is well known, but in recent years, in this manufacturing method, molten metal By appropriately selecting the composition of the metal, its supply amount, the number of rotations of the rolls, etc., it was found that an amorphous phase could be obtained relatively easily, and it was widely applied in the field of manufacturing amorphous metal thin sheets. It is being done.

Further, as a method for winding up the produced metal ribbon, the following methods have been used. In other words, if the manufacturing speed of the thin metal sheet can be easily controlled, the manufacturing of the thin metal sheet may be stopped during winding, or the tip of the thin metal sheet may be securely attached to the winding drum in a low-speed manufacturing state, and then A method that increases the manufacturing speed while winding a thin metal sheet. This method involves pooling manufactured thin metal sheets in a fixed location, pulling out the ends from them during or after manufacturing the thin metal sheet, and winding them up using a winding drum.However, the former method This method is only possible when the properties of the thin metal sheet to be manufactured do not depend much on the manufacturing speed, such as in the rolling process. This method is difficult to apply in processes where it is impossible to
Since there is a time and space distance between the production and winding of the thin metal sheet, it is possible to wind up any thin metal sheet, but it has the following drawbacks. Increase in the number of processes and equipment working area ``As the quantity of thin metal sheets increases, entanglement and knotting of metal sheets will occur, making winding work difficult.Furthermore, high-speed manufacturing is essential. In the case of an amorphous metal sheet, the metal sheet moves at high speed from the time it is peeled off from the cooling roll to the place where it is pooled.
The surrounding gas may cause the thin metal plate to bend unstably, causing deformation or even breakage. Therefore, although such a method can be used for small-scale production of narrow metal sheets, it is extremely difficult to apply when producing metal sheets in large quantities. The present invention reliably fixes the tip of a metal thin strip manufactured at high speed on a winding drum, and makes it possible to simultaneously manufacture and wind up a metal thin sheet without damaging the properties of the subsequent metal thin sheet. It is an object of the present invention to provide a manufacturing method that can be mass-produced and eliminates the drawbacks of the prior art.

A feature of the present invention is that, in order to wind the thin metal sheet at the same time as manufacturing, the winding drum is arranged very close to the thin metal sheet cooling roll. The distance is variable. Furthermore, in order to prevent excessive tension from being applied to the thin metal sheet at the initial stage of winding or loosening of the thin metal sheet, the surface of the roll for cooling the thin metal sheet and a portion of the surface of the winding drum are lightly tightened during winding. It has a structure that can synchronize the circumferential speeds of the thin metal sheets by making contact with them. The present invention will be described in detail below with reference to the drawings.

Figure 1 shows how molten metal is spouted onto a roll rotating at high speed.
1 is a schematic diagram of an apparatus embodying the present invention, which continuously manufactures thin metal sheets and winds the thin metal sheets with adjacent winding drums. Charge and melt the master alloy ■ into the tubular container ■
A gas inlet (■) is provided at the top so that the gas pressure inside the tubular container can be adjusted appropriately.A metal roll (■) is placed directly below the nozzle (■), and the outer peripheral surface is also placed on the side of the metal roll (■). A winding drum ■ in which a permanent magnet of an appropriate shape is embedded is arranged.The distance between the winding drum ■ and the metal roll can be changed by means of a hydraulic cylinder■. When producing a thin metal plate exhibiting ferromagnetism, an apparatus such as that shown in Fig. L is used, and the following operations are performed.First, the desired alloy is placed in a tubular container.
Melt by heating in the container. The metal roll (2) is rotated at a predetermined speed, and the circumferential speed of the winding drum (2) is adjusted to be equal to the circumferential speed of the metal roll (2). Next, the winding drum ■ is moved in the direction of the metal roll ■ by the force of the hydraulic cylinder ■, and a part of their surfaces are brought into contact ~ After confirming that the circumferential speeds of each are the same, the gas is Introducing “
The molten metal ■ in the tubular container ■ is passed through the nozzle ■ with a metal roller.
Le ■Make it squirt on top. When the ejected molten metal turns into a thin metal sheet and wraps around the surface of the winding drum, the hydraulic pump (2) is activated to move the winding drum backward and continue to wind up the thin metal sheet. Figure 2 is a schematic diagram of a device in which gas nozzles are arranged around the winding drum. By ejecting a It is possible to wind up even thin metal sheets with low magnetic flux density, and furthermore, by increasing the flow velocity of the gas ejected from the gas nozzle, it is also possible to wind up non-magnetic thin metal sheets.
In addition, in order to wind up the produced thin metal sheet in an orderly manner without breaking it in these devices, it is necessary that tensile stress is applied to the wound thin metal sheet and that the metal sheet is tightly rolled and kneaded. The tensile stress acting on the thin plate must be less than the breaking stress of the metal thin plate. In order to make this possible, it is preferable to drive the winding drum through a magnetic coupling and to perform winding with low torque. Furthermore, the use of magnetic coupling is advantageous in that it is possible to alleviate and absorb the difference between the circumferential speed of the metal roll and the winding speed, which is assisted as the thin metal sheet becomes thicker.
Table 1 shows various conditions under which metal book plates were manufactured using the equipment shown in Figures 1 and 2. With the exception of Table 1: The winding drum has rare earth cobalt magnets with a saturation magnetic flux density of G and a maximum energy distribution of MG, measuring 1 x 6 legs, arranged at approximately 12 side intervals on the outer surface of the aluminum drum. On the other hand, for the gas nozzles placed outside the winding drum, the distance between the nozzle tip and the winding drum surface is approximately 4.5 cm, and the distance between the gas nozzles is approximately 6 cm, so the gas jet direction is directed toward the winding drum surface. It is arranged so that it is in the tangential direction of .

As described above, the present invention is capable of manufacturing and winding a thin metal sheet produced at high speed by rapidly cooling molten metal without damaging its properties, and contributes to the industrial production of thin metal sheets. It's a big deal.

[Brief explanation of drawings]

1 and 2 are schematic diagrams of an apparatus embodying the invention. 1 figure, 2 figures

Claims (1)

[Claims] 1. Molten metal is continuously spouted from a container equipped with a nozzle at one end onto the surface of a metal cooling roll rotating at high speed through the nozzle, and rapidly solidified on the roll surface to form a continuous metal. In a method in which a thin sheet is manufactured and then immediately wound on a thin metal sheet winding drum disposed close to the roll, the surface of the winding drum and the surface of the metal cooling roll are The parts are rotated in contact with each other, and after the molten metal is spouted out after almost synchronization, and the created thin metal sheet begins to be wound up on the winding roll, the winding drum is separated from the surface of the metal cooling roll. , a method for manufacturing a thin metal sheet, which is characterized in that the thin metal sheet is subsequently wound up. 2. The method according to claim 1, characterized in that the winding drum is driven via a magnetic coupling to wind the thin metal sheet in a manner that constantly applies tensile stress to the thin metal sheet. Production method. 3. A method for manufacturing a thin metal sheet according to claim 1, wherein a plurality of permanent magnets are arranged on the surface of the winding drum to magnetically attract and wind up the thin metal sheet. 4. A method for manufacturing a thin metal sheet according to claim 1, characterized in that a plurality of gas noises are arranged outside the winding drum to suck and wind the thin metal sheet.