JPS60204647A - Flake-form metal chip, manufacture and facilities - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides flaky metal chips that can be kneaded into the surface layer of a concrete floor, etc., to improve the wear resistance of the surface layer, and a method for manufacturing the same. and an apparatus for producing the same, in particular, to be able to produce large quantities of flaky metal chips whose size is relatively small (for example, diameter 3.0IN11 or less) by a method with a cylindrical structure and by an apparatus having a cylindrical structure. .゛ [Prior art and its problems] In general, the concrete floors of concrete buildings, etc., have a relatively low hardness and are soft. Wear also occurs when items rub against each other. Therefore, in the recent concrete floor construction method, the hardness of the surface layer is increased by kneading or scattering metal particles into the surface layer, which improves the wear resistance etc. of the concrete floor surface. In addition to improving the quality of the floor, it also prevents cracks from occurring on the floor.

Conventionally, metal particles used for concrete reinforcement, etc., have been used to remove cuts caused by lathe machining, etc.
5) was used, as well as shavings obtained when shaping the tips of nails. Therefore, not only is the manufacturing efficiency of the metal particles poor, but also their shapes are often non-uniform, making it difficult to uniformly mix them into concrete. Moreover, since the conventional metal particles mentioned above had many sharply pointed parts, the sharply angled parts could protrude into the concrete surface layer, posing a problem from the viewpoint of safety after construction. .

[Purpose of the invention]

This invention was made by paying attention to the conventional problem, and it is possible to continuously produce flaky metal chips without sharp edges by a simple method and with a device of a simple structure. The aim is to make it possible to manufacture large quantities.

[Structure of the invention]

Therefore, as shown in FIG.
A bowl-shaped protrusion 10 provided on the outer periphery of the rotating drum 1 is inserted into the molten metal 2 housed inside, and the tip 10a of the protrusion 10 is
A first combined invention provides a method for manufacturing a flaky metal chip in which the molten metal 2 adhering to the melting tank 6 is at least partially solidified and then peeled off from the protrusion 10a. A rotary ram 1 having a bowl-shaped protrusion 10 on its outer periphery, on which the molten metal 2 is attached to the tip 1 (ha), and at least a part of the molten metal 2 attached to the protrusion IO are solidified. A second 4M joint invention provides an apparatus for manufacturing a chip-shaped fully bent chip, which is equipped with a peeling means 3 or 4 for peeling the chip from the protrusion 10 after the chip is peeled off.

[Relationship with other known technologies]

However, there is a possibility that the present invention may be viewed as being too close to the invention in terms of the creation of technical ideas. There is a method of forming particles and an apparatus thereof.The method of forming flake particles includes (a) rotating a heat extraction disk having a tapered serrated edge; (b) a surface of the molten material; The I? rations on the edge of the disk are entered into each serration I: a; Nidoku v7
(1′,) releasing the particles from the serrations; cooling in the surrounding atmosphere; Therefore, as described in detail in the following examples, the technical idea is different from the present invention.

〔Example〕

The present invention will be explained below based on illustrated embodiments.

1 to 6121 are diagrams showing an embodiment of the present invention.

First, to explain the structure, numeral 11 shown in FIG. 1 is a disk-shaped rotating drum, and the outer circumference G of this rotating drum 1 has a radius as shown in enlarged form in FIGS. 2 to 5. A large number of protrusions 10 protruding outward in the direction are provided in the circumferential direction, and the protrusions 1
In this embodiment, the sets of 0 are formed in two rows, that is, two strips. The protrusion 10 has a tip tOa of the bowl-shaped protrusion 10 (
It has a shape similar to KJ R62, and from now on G1110
Molten metal 2 is attached to the bowl-shaped tip of a. Such a rotating ram 1 is made of, for example, pure copper or a copper alloy (for example, 0.2% Z
r-Cu+0.9%Cr-Cu, etc.), which absorbs heat from the molten metal 2 adhering to the tip 1 (la) of the protrusion 10 and solidifies it. Make progress early.

Reference numeral 3, not shown in FIG. 1, is a drive device for rotating the rotary drum 1 at high speed, and is composed of, for example, an electric motor, a transmission, etc., and is connected to the rotation shaft of the rotary drum 1. . This drive device 3 constitutes an example of a peeling means for peeling off the molten metal 2 that has been placed on the projection 10 from the projection 10 by centrifugal force.

Therefore, rotation 1: The rotation speed of ram l is set at the outer periphery of LJ.
After at least a portion of the molten metal 2 attached to the protrusion 10 is solidified, the molten metal 2 is transferred to the tip 10 of the protrusion 10 by the centrifugal force caused by the rotation 1-ram 1.
Set the speed at which it can be scattered from a.

Furthermore, the rotation 1-ram 1 is controlled by a lifting device (not shown).
It is configured to be able to move up and down in the downward direction 7, and when it is not in operation, it is located above the molten metal 2, and when it is in operation, it is lowered and the tip 10a of the protrusion 10 at the F end is inserted into the molten metal 2. Let them do it. The molten metal 2 is stored in a melting tank 6 of a melting device 5 disposed below the rotating drum l. These metal particles can be manufactured using various metals such as cast steel, common steel, stainless steel, aluminum alloy, lead, and the like.

The melting device 5 consists of a melting tank 6 made of a refractory material such as graphite or alumina, a structural material, etc., and a heating element 7 installed so as to be wound around the melting tank 6. By heating the melting tank 6 with the heating element 7, the molten metal 2 in the melting tank 6 is always maintained at a predetermined temperature.

In addition, numeral 4 not shown in FIG. 1 is a wiper (not shown in other specific examples) of the 11th stage of E1, and the molten metal 2 attached to the tip +Oa of the protrusion 10 is not peeled off even by the centrifugal force. The metal tip 20 that is still attached to the cough tip 10a is wiped away to remove it. Furthermore, reference numeral 8 in the figure is a leveling block for adjusting the height of the molten metal 2 (7) liquid level, and is made of a fireproof material such as brick, and is adjusted to a level corresponding to the production amount of metal chips 20. By moving the liquid level, the liquid level is always maintained at a predetermined height. 9 is a heating device for heating the molten metal 2 in the lower part of the rotary drum 1 and the part into which it is inserted, and suppresses cooling of the molten metal R2 by the surrounding atmosphere.

Next, the effect will be explained.

First, the molten metal 2 is stored in the melting tank 6 of the melting device 5.

For example, a /8 molten metal 2 such as stainless steel melted in a melting furnace (not shown) is stored in a melting tank 6, and this melting tank 6 is heated by a heating element 7 to keep the molten metal 2 at a constant temperature. Keep warm.

At the same time, the heating device 9 is used to reduce the surface temperature of the molten metal 2 in order to prevent the air caught in the rotating drum 1 and blown onto the surface of the molten metal 2 from causing a drop in the temperature of the molten metal 2. Try to keep it at 1n1 temperature. The temperature adjustment of the molten metal 2 is automatically controlled by a temperature adjustment device (not shown).

From this state, the drive device 3 is rotated to rotate the rotary tram 1 at high speed. Then, operate the lifting device.
The rotary tram 1 is lowered -1, and the tip 10a of the protrusion 10 on the lower side of the rotary tram 1 is inserted into the molten metal 2. As a result, some of the molten metal 2 lands on the tip 10a of the projection 1o in the state shown in FIG. 5, and as a result, a certain amount of molten metal 2 corresponding to the insertion amount is pulled up by the tip 10a. It is rotated integrally with each protrusion 10.

Then, the droplet 2a of the molten metal 2 that landed on the tip 10a
Heat is removed by the rotating drum 1, which has a high thermal conductivity, or in addition to this, heat is removed by the surrounding atmosphere, and solidification begins. When a portion of the droplet 2a begins to solidify in this way, the droplet 2a is blown off by the centrifugal force caused by the rotation of the rotating drum 1, peeled off from the tip 10a, and scattered into the atmosphere.

Since at least a portion of the flying droplet 2a is solidified when the tip portion 10a is peeled off, the droplet 2a is sufficiently cooled and solidified by the surrounding atmosphere without changing its shape much. As a result, a substantially circular square metal chip 20 having a vertical cross-sectional shape with one side protruding and the other side recessed is obtained as shown in FIG. 5.6.

Further, the metal chip 20 that is not removed from the tip 10a by the centrifugal force is wiped away by the wiper 4 and peeled off from the tip 10a. Therefore, by using the wiper 4 in addition to the centrifugal force generated by the drive device 3, the metal chips 20 can be reliably peeled off from the rotating drum 1.

Next, an experimental example of the present invention will be explained.

Table 1 shows the material and dimensions of the rotary drum A1 used in this experiment. The results of this experiment are shown in Table 2.

In this experiment, a circular metal chip 20 having a diameter of 1.0 to 2.0 mm as shown in FIG. Got chips. The dimension of the thickest part of these metal chips 20 is 0.19 to 0.27
1111I, and the weight per metal chip is 4J.
: I, O ~ 1.5 mg. The production amount per unit time was 8 kg.

Table 1 Table 2 As is clear from these experimental results, according to the present invention, a J1-shaped metal chip 20 having a bowl shape or a shape close to it can be directly produced from molten metal 2 using an extremely simple device.
could be produced continuously and in large quantities.

The flaky metal chips 20 manufactured in this way are used as reinforcing materials for floors, etc., by being mixed or sprinkled on the surface layer of concrete floors, etc., for example, on concrete floors, buildings, etc. In addition to improving the abrasion resistance of the surface, the strength of the process itself is increased to prevent cracking. Moreover, since the metal chip 20 obtained by the present invention has a substantially circular shape on the '+z plane and does not have any sharply protruding parts, there is a risk that acutely protrusions may be exposed on the surface of the concrete 1, floor, etc. Therefore, it is possible to construct highly safe concrete buildings. In particular, by manufacturing the metal tip 20 from stainless steel, the metal tip 20
In this case, a great effect can be obtained on the floors and passageways of buildings that require aesthetic appearance and are especially humid, such as refrigerator-freezers and food warehouses.

In this example, the droplets 2a of the molten metal 2 are scattered in the atmosphere and cooled by the atmosphere. It goes without saying that a configuration in which the /8 drops 2a are cooled may also be used. Further, the number of protrusions 1O provided on the outer periphery of the rotating drum 1 and the number of protrusions per protrusion are not limited to those in these embodiments, and may be set as appropriate as necessary. Furthermore, a large number of hemispherical protrusions may be provided on the outer periphery of the rotating drum l, and these may be used as the protrusions 10.

〔Effect of the invention〕

As explained above, in this invention, the molten metal is deposited on the tip of the bowl-shaped protrusion provided on the outer periphery of the rotating drum.
After at least a portion of this molten metal solidifies, the metal chip is peeled off from the protrusion. Therefore, a large number of flaky metal knobs having a vertical cross-sectional shape with one side protruding and the other side being recessed can be manufactured continuously by an extremely simple method. In addition, the device has an extremely simple structure, consisting of a rotating drum with protrusions on which molten metal is deposited, and a drive device that rotates this rotating drum, so the device itself can be manufactured at low cost. It is possible to provide an economical J1-shaped metal bending chip manufacturing apparatus without taking much time for installation.

[Brief explanation of drawings]

FIG. 1 is a diagram showing one embodiment of the present invention; FIG. 2 is a front view showing the main parts of a rotating drum according to the present invention; FIG. -IIIIIIJi
4 is a view in the direction of the ■ arrow in FIG. 2, and FIG.
The explanatory diagram, FIG. 6, does not show the flaky metal chip according to the present invention. 1 is a perspective view. 1... Rotating tram, 2... Molten metal,
2a.../8 drops, 3... Drive device (9
1 group 1 means), 4... Manoipa (ffll Tachibana 11 means), 5... Melting 1 device, 6...
・Melting tank, 7...Heating element, 8...Reherburosoku, 9...Additional:'J・Device, 10...
...Protrusion, 10 a...Tip, 20...
Metal Particle Special Applicant Applicant 11 Moku Yakin Kogyo Co., Ltd. Agent Patent Attorney Tetsuya Mori Agent Patent Attorney Yoshiaki Naito Attorney Patent Attorney Shimizu Authorized Agent Patent Attorney Hide Bekinaga Figure 1 Figure 2 Figure 4

Claims (1)

[Scope of Claims] (1) A flaky metal chip having a vertical cross-sectional shape with one side protruding and the other side recessed. (2) The flaky metal chip according to claim 1, which has a substantially circular planar shape. (3) Rotating J.
A bowl-shaped protrusion provided on the outer periphery of the metal is inserted, and the molten metal deposited on the tip of the protrusion is at least partially solidified, and then peeled off from the protrusion. A method of manufacturing a shape-shaped chip. f41 /'a The molten metal contained in the melting tank, the rotating l' ram with the molten metal at the tip (with a bowl-shaped protrusion on the outer periphery to which the molten metal is attached), and the molten metal placed on the protrusion. An apparatus for producing a flaky metal chip, comprising: a peeling means for peeling off at least a portion of the molten metal from the protrusion after solidification. (5) The apparatus for producing flaky metal chips as set forth in claim 4, wherein the peeling means 811 is a drive device that rotates the rotary drum and peels the chips by its centrifugal force. (6) The flaky metal chip manufacturing apparatus according to claim 4, wherein the peeling means is a wiper that wipes the outer periphery of the rotating drum.