JPS6159824B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a quenched metal ribbon manufacturing device, and in particular, a single roll and a ribbon take-up reel that control flight direction, pasting length, flow angle control, and scattering prevention guides. This invention relates to a quenched metal ribbon manufacturing device that is installed between and continuously winds the ribbon.

BACKGROUND ART There is a known apparatus for producing a metal ribbon by jetting molten metal from a nozzle onto the cooling surface of a rotating roll (single roll or twin rolls) to rapidly cool and solidify it. Simply flying the rapidly cooled and solidified ribbon from the cooling surface poses no problem in the case of short items, but when manufacturing long items, the ribbon becomes wavy, making it difficult to produce a ribbon with good uniform surface properties. It is difficult to do so, and it is easy to bend and accumulate on the floor, causing damage. In order to correct these shortcomings, there are conventional devices that continuously wind the ribbon onto a reel (for example, Japanese Patent Application Laid-Open No.
No. 114526).

This prior art relates to a quenched metal ribbon manufacturing apparatus using a twin roll method, and is not suitable for an apparatus using a single roll method. Furthermore, in this prior art, the ribbon is forcibly introduced onto the reel and wound, so the apparatus is large and the control device is complex and diverse. Therefore, there is a problem in that flexibility is lacking when manufacturing conditions such as the thickness and width of the ribbon are changed.

This invention was made by focusing on the problems of the prior art, and it combines flight direction control, pasting length control, flow angle control, and scattering prevention guides with a single roll and a thin strip take-up reel. The aim is to solve the above problems by installing it between the

The present invention will be explained below based on the drawings.

FIG. 1 is an explanatory longitudinal cross-sectional view showing one embodiment of the present invention.

1 is a roll, and a nozzle 2 that spouts molten metal
It is located close to the lower end of the. The longitudinal centerline of the roll 1 is disposed offset from the center of the nozzle 2 in the counter-rotational direction. The roll 1 rapidly cools and solidifies the molten metal ejected from the nozzle 2 on its outer circumferential cooling surface to form a ribbon, and causes the ribbon to fly from the cooling surface. A roll 1 with a diameter of 200 mm is used.

Reference numeral 3 denotes a flight direction control guide, which is disposed close to the cooling surface of the roll 1 in the ribbon flight direction and controls the flight of the ribbon from the cooling surface of the roll 1 in a fixed direction. That is, by controlling the initial state, that is, the tip end of the ribbon, the transition time from the initial state to the steady state is simultaneously shortened, and the transition from the initial state to the steady state is smoothly performed. The initial state here refers to the state immediately after the molten metal is ejected from the roll 1 of the ribbon.
refers to an unstable state in which there is little adhesion to the cooling surface.
Steady state is a state in which a certain period of time (approximately 0.07 seconds) has passed after ejection from nozzle 2, the ribbon is sufficiently cooled and solidified on the cooling surface of roll 1, and is stably flying from the cooling surface of roll 1. say. FIG. 2 shows the flying state of the ribbon by a single roll 1, where A shows the initial state and B shows the steady state.

Figure 3 shows the relationship between the length of the ribbon attached to the cooling surface of the roll 1 and the width and thickness of the ribbon in each state.In the initial state A, the length of attachment depends on the width and thickness of the ribbon. However, in steady state B, the sticking length changes depending on the width and thickness of the ribbon. Therefore, the steady state changes depending on the width and thickness of the ribbon, and the flight angle of the ribbon roll 1 from the cooling surface also changes.
can be directed in a fixed direction from the cooling surface. The flight direction control guide 3 is located on the right side of the nozzle 2.
It is installed approximately 30 mm away from the cooling surface so as to cover the cooling surface of the roll 1 of ~200 mm.

Reference numeral 4 denotes a pasting length control guide, one end of which is in contact with the cooling surface of the roll 1 on the side of the flight direction control guide 3 and above the lower end of the flight direction control guide 3, and is attached to the cooling surface of the roll 1 of the ribbon. Control length. The wider the ribbon and the thinner the thickness, the more
Although the length of attachment becomes longer, by forcibly peeling off the ribbon from the cooling surface of the roll 1, the ribbon flies in a fixed direction from the cooling surface of the roll 1. When the flight direction control guide 3 is in a steady state at a position above one end of the pasting length control guide 4, the pasting length control guide 4 is in a steady state at a position below one end of the pasting length control guide 4. In this case, the flying direction of the thin strip is made constant. One end of the pasting length control guide 4 is in contact with the cooling surface of the roll 1 200 mm in front of the nozzle 2. The pasting length control guide 4 is curved, and the other end protrudes outside the flight direction control guide 3. By using the flight direction control guide 3 and the pasting length control guide 4, it is possible to eliminate differences in the flight direction of the ribbon depending on the width and thickness of the ribbon. The sizes of the flight direction control guide 3 and the pasting length control guide 4 are controlled depending on the width and thickness of the ribbon.

5 is a flow angle control guide, one end of which is connected to the other end of the pasting length control guide 4, and controls the flow angle of the ribbon to the ribbon take-up reel 6. The flow angle control guide 5 is inclined so that the ribbon, especially its tip, enters the ribbon take-up reel 6 under its own weight, and the inclination is such that the ribbon enters the ribbon take-up reel 6 and The ribbon is set to enter within the angular range of the second quadrant of the ribbon take-up reel 6 so as to be captured and wound up by the ribbon take-up reel 6. This is because when entering the first quadrant, the ribbon may slip and cannot be captured, and when entering the third quadrant, the ribbon may break. The results of investigating the approach angle θ of the ribbon to the ribbon take-up reel 6 and whether or not it can be taken up are shown in the fourth table.
As shown in the figure, the approach angle θ that can be wound varies depending on the width of the ribbon, and winding is possible in the range of 30° < θ < 90° (optimally 50° < θ < 60°). . As the width of the ribbon becomes wider, there is less margin for the approach angle θ. The reason why winding is not possible on the low angle side is because the ribbon slips on the ribbon take-up reel 6, and the reason why winding is not possible on the high angle side is because the ribbon is cut by the ribbon take-up reel 6. . This cutting is caused by twisting of the ribbon. In FIG. 4, the range surrounded by the dashed line and the dotted line is the range that can be wound.

7 is a scattering prevention guide, one end of which is connected to the other end of the flow angle control guide 5 so that the approach angle θ of the ribbon to the ribbon take-up reel 6 is approximately 50°; , a thin strip take-up reel 6 to prevent the thin strip from scattering from the thin strip take-up reel 6.
It surrounds most of the area. If there is no scattering prevention guide 7, the end of the ribbon will be swung around and scattered, and as a result, the vicinity of the end of the ribbon may hit a known device and the vicinity of the end of the ribbon may be cut. The scattering prevention guide 7 is set at a distance of about 60 mm from the ribbon take-up reel 6 and covers 80% of the circumference of the ribbon take-up reel 6.

As the ribbon take-up reel 6, one having a skeleton structure as shown in FIG. 5 is used. Approximately 30m/sec
In order to capture the tip of the thin strip that flies out from the downward angle control guide 5 at high speed, it is impossible to use magnets or adhesive tape, and the best method is to use the entanglement (centrifugal force) of the tip of the thin strip itself. In order to increase the probability of capture, it is best to use a skeleton structure with a wide capture range and a simple structure. In terms of capturing the tip of the thin strip, it is better to have a wide capture range, that is, one with a large diameter, but in terms of winding it up after capture, the number of windings should be increased to increase the self-binding force of the thin strips. The smaller diameter is better. The reel diameter of the ribbon take-up reel 6 is determined in consideration of both factors.

The speed of the ribbon take-up reel 6 is set to be approximately equal to the speed of the roll 1 (0 to ±5%). The circumferential speed of the ribbon take-up reel 6 υ ₁ is the circumferential speed of the roll 1 υ ₂
As a result of investigating the winding situation by changing υ ₁
If it is ±5% or less with respect to υ ₂ , winding is possible, and the optimal value is 0 to +2%. An aluminum disk 2 with a diameter of 220 mm is used as the thin strip take-up reel 6.
A plate and six round brass rods are used.

By using each of the above guides, the ribbon can be continuously wound onto the ribbon take-up reel 6,
The wound ribbon has uniformity in width, thickness, surface properties, and Curie point characteristics over its entire length, except for about 1 m at the tip.

As explained above, this invention provides flight direction control, attachment length control, flow angle control, and scattering prevention guides by installing them between a single roll and a ribbon take-up reel. With a single roll, the ribbon can be continuously wound with extremely simple equipment, and the advantage is that flexibility can be achieved even when manufacturing conditions change.

[Brief explanation of the drawing]

FIG. 1 is an explanatory longitudinal cross-sectional view showing one embodiment of the present invention, FIG. 2 is a view showing the flying state of the ribbon from the cooling surface of the roll in the production of rapidly cooled metal ribbon using a single roll, and FIG. A diagram showing the relationship between the attachment length of the cooling surface of the roll and the width and thickness of the ribbon in the initial stable state of the ribbon. Figure 4 shows the relationship between the width of the ribbon and the angle of approach to the ribbon take-up reel. FIG. 5 is a perspective view of the ribbon take-up reel. 1... Roll, 2... Nozzle, 3... Flight direction control guide, 4... Pasting length control guide, 5...
Flow angle control guide, 6... Thin strip take-up reel, 7
...Scatter prevention guide.

Claims (1)

[Scope of Claims] 1. A quenched metal ribbon manufacturing apparatus having a means for continuously winding up a molten metal ribbon formed by jetting molten metal from a nozzle onto the cooling surface of a single rotating roll, quenching and solidifying the molten metal. a flight direction control guide disposed near the cooling surface of the roll in the flight direction of the ribbon for controlling the flight of the ribbon from the cooling surface of the roll in a fixed direction; a pasting length control guide whose one end contacts the cooling surface of the roll above the lower end of the flight direction control guide and controlling the length of the ribbon to be pasted to the cooling surface of the roll; a flow angle control guide having one end connected to the ribbon take-up reel and controlling the flow angle of the ribbon to the ribbon take-up reel; A quenched metal ribbon manufacturing apparatus characterized by comprising a scattering prevention guide that surrounds a large portion of the ribbon at regular intervals and prevents the ribbon from scattering from the ribbon take-up reel. 2. The quenched metal ribbon manufacturing apparatus according to claim 1, wherein the peripheral speed of the ribbon take-up reel is set within a range of ±5% compared to the peripheral speed of the roll. 3. Quenched metal ribbon production according to claim 1 or 2, wherein the flow angle control guide is installed so that the ribbon flows down within the angular range of the second quadrant of the ribbon take-up reel. Device. 4. The quenched metal ribbon manufacturing apparatus according to any one of claims 1 to 3, wherein the ribbon take-up reel has a skeleton structure.