JPH0342155A - Simple roll type device for rapidly cooling molten metal - Google Patents

Abstract

PURPOSE:To stably manufacture an excellent thin strip by moving a nozzle based on detected values of a detecting means of a travel of the nozzle and a detecting means to detect a gap between the nozzle and a cooling roll and bringing the position of the nozzle under control. CONSTITUTION:The measurement of the gap H between the nozzle 2 and the cooling roll 1 is carried out by an optical clearance measuring instrument com posed of a measuring optical projector 21 and a light receiver 22. An elevating/ lowering frame 8 is assembled in parallel crosses as if a tundish 17 provided with a charging nozzle 2 is enclosed and an elevating/lowering mechanism is provided on each of both ring and left sides in the direction of the nozzle width. An amount of offset (m) of the nozzle can be kept under control when a window is made on each of right and left sides in the width direction of the elevating/lowering frame 8 and the bearings 16 of a rotary shaft running in the windows are provided to rive the shaft. Consequently, the angle of rota tion of the nozzle and the amount of the offset, too, can be estimated by the mere measurement of the clearance between the nozzle and the cooling roll, and when these data are taken in and each driving system is kept under control, the nozzle can be moved easily to the target position.

Description

[Detailed Description of the Invention] <Industrial Field of Application> The present invention is capable of producing a plate directly from /8 hot water using a cooling roll! F, for example, quenched F"J'lF+ Amorphous 4 Emperor.

This relates to a single roll type/8 hot water quenching device for manufacturing cold 1 Jil wire.

<One technique from TIFL> A technique of directly making a board by cold hard work; One-shot has become active in recent years, but among these, the single roll method is different from the melt spinning method as shown in Figure 4. There is a melt trunk method as shown in FIG.

In these methods, the gap between the tip of the pouring nozzle and the cold 7J roll, the nozzle rotation angle, the amount of nozzle offset, etc. greatly affect the quality of the plate-making result, so high-precision control is required. . For example, when manufacturing amorphous metal using the melt spinning method, the gap between the nozzle and the cooling roll should be approximately ±10 to 30 μm. 1116 degrees is required.

Similarly, the nozzle rotation angle and nozzle offset ffl
The same level of sophistication is required.

Conventional techniques include, for example, a method for controlling the gap between a nozzle and a cooling roll during preheating and pouring in JP-A-58-132356, JP-A-59-183957, and JP-A-5.
Q optimization of the nozzle rotation angle in Publication No. 3-130205;
There are methods for controlling the gap difference between the i-millimeter nozzle and the cooling roll.

However, in three dimensions! Jl <The actual situation is that no device with sufficient structure and controllability to control the attitude of the nozzle has been disclosed.

<Problems to be Solved by the Invention> 1ii1 As described above, controlling the gap between the nozzle tip and the cooling roll, the nozzle rotation angle, and the nozzle offset amount are the most important issues in the single roll method.

These controls are not limited to presetting during manufacturing setup, but also control the nozzle deformation that occurs during nozzle preheating, pouring, etc.
It must be able to cope with the thermal expansion of the cooling roll.

The present invention has been made in view of the above-mentioned circumstances, and in order to provide an apparatus having a mechanism and controllability that satisfies the above-mentioned requirements.

<Means for Solving the Problems> The present invention provides a method for pouring hot water onto the surface of a rotating cold 7J roll from a nozzle. Episode 8! 1, and in a single roll molten metal quenching device that directly produces metal thin 11F and metal wire, the following (1)
, (2) and (3), the nozzle moving means and its displacement amount detection means, and the following (4): Control the nozzle position n by moving the nozzle using the nozzle moving means of any one or more of (3) based on the detected value by one or more of the detection means of (1) and (4). A single roll type melter characterized by having a control step) Rapid cooling! A7't.

In the above part, the nozzle is parallel to the tangential direction of the upper end of the cooling roll in the molten metal 11 dripping position, and the amount of movement is detected. Means, ■ At both ends of the cooling roll axis of the nozzle, independently, 1> auxiliary means of the nozzle parallel to the direction, and means for detecting the f hyperactive star, ■ The cooling roll axis of the nozzle Independently at both ends of the direction? 8 hot water atrt;
A means for rotating a nozzle that rotates with respect to the direction, and a means for detecting the rotation angle of the nozzle;
Smell, rI7 optical oZ detection between the nozzle and the cold power reel.

Kusaku river No. 412I shows melt spinning puja.

From nozzle 2 to l-[7? Is it easy to use ril with cooling roll 1? 8 Form a hot water bath 1'3 and rapidly solidify to become a light orange. At this time, the positional relationship between the nozzle 2 and the cooling roll 1 is defined by the gap between the nozzle and the cold roll 1, the nozzle offset 1 ri (misalignment with the cold roll axis) m, and the nozzle rotation angle α. be done. Since the nozzle has a width of □, the above-mentioned relationship holds true for the gap 11 and the offset 1 m at two locations on the left and right in the horizontal direction, resulting in a motion regulation with a total of 5 degrees of freedom.

Figure 5 shows the melt drag method. In this case as well, it can be argued that the nozzle positional relationship is exactly the same as in the melt spinning shown in FIG. 4. FIG. 1 is a perspective view of the apparatus according to the present invention.

As a control 1111 of the gap II between the nozzle and the cooling roll, take the pouring nozzle 2 (=f 5 pieces 71' to surround the L star kundish 17) L, -1,, 8 are placed on the J-th 1st
, II label, nozzle sound direction left lf and i'l each ;i
:, I have a child with 1;jl ++1:1.

This 51', 51n Iiii:LFJ<! Force, [-even r1a, so0 N'j, 'Ll force yI.

War J, Jatuki 6a, 6b distributed among the 11 squadrons:
;7. L7. It is composed of a fixed frame 9a on which the pulse generators 5a, . 2 and the cooling roll 1 can be independently controlled in the width direction.

The nozzle offset ff1m is controlled by the lifting frame 8.
This is possible by creating windows on the left and right sides of the cap, providing a rotating shaft bearing 16 that runs through the windows, and driving the rotating shaft bearings 16. A rotating shaft 18 that supports a kundish 17 is provided on a bearing 16 that runs inside the window.

One end of the bearing 16 is connected to the worm screw 15, and the worm jack 14a is driven by the travel motor 12a. Also, this movement is performed by the pulse generator +3a
The opposite side in the 0 width direction measured by a1 has a completely similar drive system, each moves independently, and can control the offset amount m and the offset difference in the width direction. All of these drive systems are mounted on the frame 8.

The nozzle rotation angle α can be controlled by rotating the tundish rotation shaft 18 attached to the travel bearing 16 with a rotation motor 19. The amount of drive is measured by the pulse generator 20. This drive system is entirely mounted on a rotating shaft bearing 16.

The measurement of the gap tr between the nozzle and the cooling roll is performed by an optical gap 31 measurement meter consisting of a measuring optical system projector 21 and a light receiver 22.

The measuring light beam 1123 emitted from the optical system projector 21 for measuring J and lt is selected by passing through the gap formed between the tip of the nozzle 2 and the cooling roll 1, and the light beam entering the light receiver 22 is used to connect the nozzle and The gap H with the cooling roll can be accurately measured. This device is arranged symmetrically in the nozzle width direction.

In the movement of the apparatus configured as described above, the relationship shown in FIG. 2 is established.

The lip 2a of the nozzle when the radius of rotation between the axis of rotation 18 of the tandem z17 and the tip of the nozzle 2 is l, and the bottom surface of the tip of the nozzle 2 and the tangent to the top of the cooling roll 1 are parallel to each other.
A straight line connecting the center of the nozzle with the rotation axis 18 and the nozzle lip 2
The angle formed by the straight line connecting the rotation axis 18 of a and the cooling roll axis is β, and the distance between the center of the nozzle 2 and the straight line connecting the rotation axis of the nozzle 2 and the cooling roll axis is the offset amount m.
, distance is H, nozzle lip thickness (1/2 of nozzle J7
) is t. When the nozzle is rotated by the nozzle rotation angle α from such a position n, the gap H between the nozzle and the cooling roll is the difference between the 1 hyperactivity ii H at the center of the nozzle lip 2a and the amount of movement II due to the rotation of the nozzle lip 2a. and initial gap 11. is the sum of

This relationship is expressed by the following equation.

tl = II + -11z + If.

= 12 (cos7? -cos lαtB)t
sin l a l -i-1rz where β= 5i
n-' From this equation, the relationship between the nozzle rotation angle α, the relationship between the nozzle and the cooling roll tIλ1, and the offset fftm is calculated as shown in Fig. 3.
Samurai I, change the nozzle @ rotation angle α to J! When LJ8, left t1
The target song is a masterpiece of artistic skill.1. Ru. The parallelism between the skin surface of the nozzle lip and the cooling roll 1 can be determined by having the poles at the positions a, FF, and α-0. The gap H0 at this time is also known.

Moreover, when the offset 1m is mho, the ■ line is not left-right symmetrical, but becomes dIIgg tilted to one side.

The offset ltm is calculated from the maximum of this slope.

In this way, according to the device Ja structure of the present invention, it is possible to determine the rotation angle and offset amount of the nozzle by simply measuring the gap between the nozzle and the cooling roll, and this data can be taken in to control each drive system. By doing so, it becomes possible to easily move the nozzle to the target position. In addition, all of these can be measured and controlled without contact, making it possible to control not only precenting during setup before pouring, but also during preheating of the nozzle and tundish, and during pouring, to avoid deformation of the nozzle or roll due to heat. It is also possible to respond online.

<Length example> Mel 1~・By spinning method, component Fe “3-5
When producing amorphous alloy peeled 1) with i=78-13-ri (wt%) under the following conditions, the peripheral speed of the cooling roll is -17 m/sec.

Nozzle width = 100m.

Exit steel temperature -1310°C.

Nozzle preheat temperature -1000'C.

Measure the gap between the nozzle and the cooling roll during nozzle preheating,
It was found that the nozzle was in the position indicated by the circle in Figure 3. That is, the nozzle rotation angle is -12 degrees, the gap between the nozzle and the cooling roll is -40 μm from the reference gap, and the amount of offset =
3 + n + a, so the target value is set to the nozzle summary control device as follows: Nozzle rotation angle = 0° Gap between nozzle and cooling roll -
As a result of driving with an offset Fft of 0 μm and an offset of Fft=Omll, it was possible to return to the origin shown in FIG.

As a result of starting pouring under these conditions, there was no paddle break and the surface had the target thickness of 20 plI! ? 1: A thin leaf in good condition could be obtained.

Furthermore, as a result of continued manufacturing, it was possible to stably maintain the origin shown in FIG. 3 despite disturbances caused by nozzle deformation and the crown of the cooling roll.

As a comparative example, under similar manufacturing conditions, the third
It was centered at the origin/marked position in the figure, but if the nozzle posture control device is not used, one nozzle and the cooling roll will be moved to the open position 20scc after the start of pouring, and at that time Due to the thinness of that part, holes began to appear in the zip.

<Effects of the Invention> By using the apparatus according to the present invention, it is possible to control the gap between the nozzle and the cooling roll, the nozzle rotation angle, and the nozzle offset m to a high degree, and to stably produce good FHiF. becomes possible.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a single-roll type molten metal quenching device according to the present invention, Figure S2 is an explanatory diagram showing the positional relationship of the nozzle, cooling roll, etc., and Fig. 3 is the positional relationship of the nozzle, cooling roll, etc. Figure 4 is a schematic explanatory diagram of the melt spinning method.
(2'l is a schematic diagram of the melt-drag method. 1... Cooling roll, 2... Nozzle, 2a... Nozzle ribbon, 3... Easy battle ring , 4...Motor for raising and lowering the tandem dish, 5...Pulse gear for raising and lowering the tandem dish FJBt1jtll, 6...Worm jack for raising and lowering the tan dish, 7.
・・Warm jack for raising and lowering the tan-dish, 8...
Frame for lifting and lowering the tundish, 9... Fixed frame, 10... Tundish lifting guide, II... Tundish lifting guide, 12... Morph for running the tundish, 13... Pulse generator for measuring the distance traveled by the tundish, 14... Kundinongyu running plum, - Mujanoki,
15... Umemusukuru 16 for tandem running
. . . Rotation axis of rotation of the cylinder 17 . . . Rotation shaft of the cylinder 19 . . Motor for rotating the cylinder 20 . . . Pulse for rotation angle meter of the cylinder Generator, 21... Optical system projector for metering, 22... Optical system receiver for measurement, 23... Light beam for measurement, 24... Assist point at nozzle rotation angle α, H. ... Gap between the nozzle and the cooling roll, Il, ... II when the nozzle rotation angle is 0, ++, ... Increase in the gap when the nozzle rotation angle turns α, 11□ ... Nozzle Amount of movement of the nozzle lip when the rotation angle is α rotation, In... Nozzle offset ■, α... Nozzle rotation angle, L... Nozzle lip; 7, Me7... Offset, 1 - angle, 2... Nozzle times, 1 child. Patent issued 1. Q Person Jll Saitama Steel Co., Ltd. Figure 3 Figure 4

Claims (1)

[Scope of Claims] A single-roll molten metal quenching device for directly manufacturing metal ribbons and metal wires by injecting molten metal from a pouring nozzle onto the surface of a rotating cooling roll, comprising the following (1), (2), and ( It has a nozzle moving means and a means for detecting the amount of movement thereof as described in 3), and a device for detecting the gap between the nozzle and the cooling roll as described in the following (4), and (1) and (2).
), (3), and (4) based on the detected value by any one or more of the detection means, (1), (2), and (3).
1. A single-roll molten metal quenching apparatus, comprising a control means for controlling the nozzle position by moving the nozzle using any one or more of the nozzle moving means. (1) At both ends of the nozzle in the axial direction of the cooling roll, independently move means for moving the nozzle parallel to the tangential direction of the upper end of the cooling roll at the molten metal injection position and means for detecting the amount of movement; (2) the axis of the cooling roll for the nozzle; (3) At both ends of the nozzle in the axial direction of the cooling roll, independently moving the nozzle parallel to the molten metal injection direction and detecting the amount of movement; (3) At both ends of the nozzle in the cooling roll axial direction, independently (4) An optical means for detecting a gap between the nozzle and the cooling roll at both ends of the nozzle in the axial direction of the cooling roll.