JPS59125246A - Producing device for light-gage metallic strip - Google Patents

Abstract

PURPOSE:To prevent the generation of waving and twisting in a light-gage strip peeled from a cooling roll by providing a belt conveyor which cools and transfers the light-gage strip peeled from the cooling roll in proximity to said roll. CONSTITUTION:A belt conveyor 8 for cooling and transferring is provided in proximity to a cooling roll 1 below a molten metal ejecting nozzle 3 of the roll 1. A light-gage strip 4 directly formed from a molten metal 2 is brought into contact with the surface of the roll 1 to certain extent and thereafter the strip is peeled from the surface of the roll 1 by a scraper 5 and is transferred through a chute 10 onto the conveyor 8. The strip 4 is cooled during transfer. Gas, for example, gaseous N2, is injected from gas injecting nozzles 9 and the strip 4 is cooled to a desired temp. by controlling the temp., flow rate, pressure, etc. of the gas or adjusting the length of the belt of the conveyor 8.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for manufacturing a metal ribbon by a molten metal rapid cooling method, and in particular, a belt conveyor for cooling and transport for forcibly secondary cooling a peeled ribbon that is directly solidified from a molten metal. This was designed to improve the quality of the thin strip.

Conventional molten metal quenching methods include the single roll method and the twin roll method, which are particularly used in the production of amorphous metal tapes.
The single roll method is widely used because it is suitable for mass production.

As shown in Figure 1, in the single roll method, a nozzle (3) for spouting molten metal (2) is installed on the surface of a cooling roll (1) that rotates in the direction of the arrow. Molten metal (2
) is squirted onto the surface of the roll (1) to rapidly cool the molten metal (
2) The product is directly solidified into a thin strip and then peeled off from the roll (1) to produce a thin strip.

Cooling rolls vary depending on the type of molten metal, but
Generally, a copper-based or iron-based roll is used, and a slit type nozzle is used.

In recent years, the single roll method has been used to produce materials that are difficult to process, such as Cu.
The production of thin strips of -P alloy, Fe-5i alloy, etc. has been put into practical use, and production in m is currently desired.

For this reason, various improvements were attempted, and thin strip winding + 1 &
Various types of lit b have been proposed.

■1'' Roll material, for example, a Cu-P alloy ribbon, is manufactured using the one-roll method. After avoiding contact with the surface of the roll (1) to an appropriate length, the ribbon (4) is peeled off from the surface of the roll (1) using a scraper (5) or an air jet (6).

However, when the rotational speed of the cooling roll is increased for mass production, there is no suitable winding means, so the ribbon has the drawback of waviness and twisting due to collision with the floor at high temperatures, and is brittle at low temperatures. Since the thickness is 1"1, it is difficult to correct undulations and twists, and there are various problems in post-processing.

On the other hand, in the production of amorphous metal tape, as shown in Figure 3, the ribbon peeled off from the roll (1) is immediately transferred to the roll
) The material is wound onto a bobbin of a winding machine (7) installed in the vicinity of the winding machine (7).

When producing a cup-p alloy ribbon using such a device,
Immediately after leaving the roll, the temperature of the ribbon reaches 500-600°C, so if the ribbon is wound directly onto the bobbin of a winder, there is a risk of adhesion between the layers of the coiled ribbon. Furthermore, if the ribbon is cooled too much, for example at temperatures below 100° C., the ribbon becomes extremely brittle and cannot be wound at high speed.

Therefore, in the production of difficult-to-process materials such as C1-P alloy ribbons, it is desirable to have a device that can cool the material to a desired temperature, preferably in the range of 200 to 400°C, without causing waviness or twisting. There is.

In view of this, as a result of various studies, the present invention has developed an apparatus for manufacturing a metal ribbon that can be wound up without waviness or twisting in the ribbon peeled off from a cooling roll. A device in which a melting/draining spouting nozzle is provided on the surface of the cooling roll, the molten metal spouted from the nozzle is cooled on the roll surface, the molten metal is directly solidified into a thin strip, and this is peeled off from the roll surface. The invention is characterized by the provision of a belt conveyor for cooling and transporting the peeled ribbon.

This will be explained in detail using the drawings.

Figure 4 shows an example of the apparatus of the present invention, in which (1) is a cooling roll rotating in the direction of the arrow, (2) is a molten metal, (3) is a nozzle, (4) is a ribbon, ( 5) is a scraper (8) is a belt conveyor, (9) is a gas injection nozzle,
(7) shows the winder, lit, ll I call (1)
A nozzle (3) for spouting the molten metal (2) is provided on the surface of the roll (1), and the molten metal (2) is spouted from the nozzle (3) onto the surface of the roll (1) to rapidly solidify the molten metal (2). 2) Form the ribbon more directly (4).

Below the molten metal spouting nozzle (3) of the cooling roll (1), a belt conveyor for cooling transfer (
8) directly formed from F, RIj, molten metal (2) (
4) is peeled off from the surface of the roll (1) by the souffle bar (5) after avoiding contact with the rod on the surface of the roll (1), and transferred to the transfer belt conveyor (8) through the chute (1o), during transfer. The thin strip (4) is then passed through a cold film to a temperature of 100 to 400°C.

The apparatus of the present invention has the above configuration, and the speed of the belt of the belt conhair is made equal to the moving speed of the ribbon, since if it is slower than the circumferential speed of the cooling roll, that is, the moving speed of the ribbon, the ribbon will become sagging. Alternatively, the temperature, flow rate, pressure, etc. of the gas may be controlled by injecting gas, such as NZ gas, through the nozzle (9) as shown in the figure onto the ribbon being transferred, or by controlling the length of the conveyor belt. The ribbon (4) may be cooled to a desired temperature by adjusting the temperature.

Air, N2, or other inert gas may be used as the gas to be injected onto the ribbon on the belt conveyor.Using a special inert gas, such as Ar gas, is effective in preventing oxidation of the ribbon. be.

In addition, if a metal mesh is used for the belt of =1 conveyor, and gas injection nozzles are provided above and below bell 1~, and gas is injected from both the upper and lower sides of the thin strip on the belt, cooling and transfer can be carried out more effectively. I can do it.

The ribbon cooled to a desired temperature in this way is then processed by a winder (7) installed at the end of the bell 1 to conveyor (8) as shown in the figure.
), it is possible to prevent adhesion between the layers of the coiled ribbon.

In addition, when winding is not performed, the ribbon is cooled to a temperature of 100 to 200°C on a belt conveyor that cools and transports it to prevent waviness and twisting of the ribbon. It can also be wound onto any bobbin of 30 mm or more.

Examples of the present invention will be described below.

Using the device of the present invention (with the winder removed), which is not shown in FIG.
A ribbon was produced directly from the molten u-P alloy. cup
The alloy was melted, and the molten metal was injected through a nozzle onto the surface of an iron-based cooling roll rotating at a circumferential speed of 15 m 2 /sec, and the molten metal was directly solidified into a thin ribbon. A cooling transfer belt conveyor with a length of 2 g and 1 m using a belt made of iron mesh is placed near the cooling roll below the nozzle, and the belt is transferred to the belt at a speed of 15.1 m/sec, and the material is peeled off from the roll surface with a souffle bar. The ribbon was placed on a bell 1 running through a chute, and NZ gas was injected at 1 kg/c4 from four nozzles provided on the conveyor to cool the ribbon.

As a result, a Cu-p alloy ribbon without waviness or twist was obtained.

After that, it was wound onto a bobbin with a body diameter of 30 mm, but it was extremely easy to rewind it.

Cu-P alloy ribbons were produced several times under the same conditions, and the molten metal temperature,
The temperature of the ribbon at the time of peeling and the temperature of the ribbon at the end of the bell 1 conveyor were measured using a width side thermometer.

As a result, the molten metal temperature was 940℃, and the ribbon temperature at the time of peeling was 5.
The temperature of the ribbon from bell 1 to the end of the conveyor was 180 to 200°C.

For comparison, the molten metal was directly solidified into a thin strip on a cooling roll using the apparatus shown in FIG. 3 under the same conditions, and this was directly wound on a winder.

As a result, the layers of the coiled ribbon adhered to each other, making it impossible to unwind it.

The molten metal temperature at this time was 940℃, and the ribbon temperature at the time of peeling was 5.
The temperature was 50-600°C.

Furthermore, for comparison, a ribbon was produced directly from a molten Cu--P alloy under the same conditions using the apparatus shown in FIG. 2(a).

As a result, the ribbon falls to the floor, which is relatively hot, and the impact causes the ribbon to undulate and twist.
Although rewound was carried out on a bobbin of mm, it was extremely disadvantageous as there were many damaged parts.

In this way, according to the device of the present invention, CLI −, P alloy, 1
': Manufacture of thin strips of difficult-to-process materials such as 6-3i alloy
It is a product that can be enjoyed and has a remarkable industrial effect.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing an example of a conventional single-roll device for manufacturing amorphous metal tape, and Fig. 2 (a) and (b) are illustrations of conventional single-roll devices for manufacturing difficult-to-process thin ribbons, respectively. Figure, 3rd
The figure is an explanatory diagram showing an example of the apparatus of the present invention. 1, cooling roll 2, molten metal 3, molten metal spouting nozzle 4, i9-115, souffle bar 6, air jet 7, winding (8, belt conveyor 9, gas injection nozzle 10, chute (Fig. 1, Fig. 2)) (B) Figure 3 Procedure amendment writing method) % formula % 1. Indication of the case 1982 Patent Application No. 906 2. Name of the invention Apparatus for manufacturing metal thin strip 3. Person making the amendment Relationship with the case Patent application Address: 2-6-1 Marunouchi, Chiyoda-ku, Tokyo Name (529) Furukawa Electric Co., Ltd. 4 Agent address: 16 Kanda Kita Jimono-cho, Chiyoda-ku, Tokyo
101 English Building 3rd floor 5, Date of amendment order: April 6, 1981. The contents of the amendment and the brief explanation of the drawings are corrected as follows. ``Figure 1 is an explanatory diagram showing an example of a conventional one-roll device for manufacturing amorphous metal tape, and Figures 2 (a) and (b) each show a single-roll device for manufacturing thin strips of difficult-to-process materials. Explanatory diagram showing, 3rd
The figure is an explanatory diagram showing one example of the apparatus of the present invention, and FIG. 4 is an explanatory diagram showing another example of the apparatus of the present invention. ”

Claims (1)

[Claims] <1) A nozzle for spouting molten metal is installed on the surface of a rotating cooling roll. [The molten metal spouted from the nozzle is cooled on the roll surface and solidified directly from the molten metal into a thin strip.] An apparatus for manufacturing a metal ribbon, characterized in that the apparatus for peeling the metal ribbon from the surface of the roll is provided with a belt conveyor for cooling and transporting the peeled ribbon in close proximity to a cooling roll. (2) The conveyor belt is made of metal mesh, and gas is injected onto the transfer strip on the conveyor to cool the 1ft.
An apparatus for manufacturing a metal ribbon according to claim 1.