JP3597236B2 - Fluidized bed furnace wire passage device for wire heat treatment - Google Patents

Description

[0001]
[Industrial applications]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluidized bed furnace for heat treatment of a wire, which is used in a fluidized bed furnace for heat treatment of a wire in which a plurality of wires are aligned and continuously run in a furnace to heat treat the wire.
[0002]
[Prior art]
Steel cords, wire ropes, and the like are manufactured by applying wire drawing and heat treatment to a wire rod such as carbon steel. The heat treatment includes a step of heating the wire to perform a soaking process, and then cooling and maintaining the wire at a low temperature to obtain a pearlite structure. A fluidized bed furnace is used for the cooling. In a fluidized-bed furnace, a plurality of wires unwound from a reel are wound up by a winding device, so that a plurality of wires are aligned in the furnace from a furnace inlet to a furnace outlet and continuously run.
[0003]
The fluidized bed furnace is used not only for such a cooling process but also for a heat treatment for heating a plurality of metal wires.
[0004]
[Problems to be solved by the invention]
By the way, the wire is expected to be broken in the process of passing through the inside of the fluidized bed furnace. For example, when one of a plurality of wires is cut, it is necessary to newly pass through the furnace.
[0005]
If the upper part of the fluidized bed furnace can be opened, the upper part is opened and the wiring is performed during the wiring processing.
[0006]
However, by opening the upper part of the fluidized bed furnace, it is necessary to cope with the high temperature environment in the furnace, and there is a possibility that the temperature in the furnace may fluctuate and the heat treatment may be inadequate.
[0007]
On the other hand, in the case of a closed type in which the upper part of the fluidized bed furnace is not opened, the wire to be passed is joined to the cut wire and other adjacent wire by welding or the like, and the other wire is moved from the furnace inlet to the furnace outlet. By passing the wire through the furnace, the wire to be passed can be guided from the furnace inlet to the furnace outlet, and the connection can be released to enable a new wire. According to this closed type, it is not necessary to cope with the high temperature environment in the furnace, and an appropriate heat treatment is secured without the temperature in the furnace fluctuating.
[0008]
However, when a newly passed wire is guided, the wire may be tangled with another wire to cause disconnection. In particular, when the wire is unwound by an arm-rotating type, since the wire travels while rotating, it is more likely that the wire will come into contact with another wire and become entangled.
[0009]
Also, when the wire diameter is small, the tension applied to the wire when passing the wire to be passed and the other wire to which the wire is joined into the furnace may exceed the allowable strength of the wire. In such a case, there is a possibility that the wire may be broken when the wire is connected.
[0010]
In view of the above facts, the present invention facilitates the passage of a new line in a furnace of a fluidized bed furnace and prevents disconnection during the passage, and in particular, a closed type fluidized bed. An object of the present invention is to provide a fluidized bed furnace wire passage apparatus for heat treatment of a wire rod which is effective in a furnace.
[0011]
[Means for Solving the Problems]
In order to solve the above problems, a fluidized bed furnace wire passage apparatus for heat treatment of a wire rod according to the invention according to claim 1,
Used in a fluidized bed furnace for heat treatment of wires that heats the wires by continuously aligning multiple wires in the furnace containing the fluidized material and continuously running from the furnace inlet to the furnace outlet. In the fluidized bed furnace wire passage device for heat treatment of wire rods,
A tubular body that is elongated in the furnace from the furnace inlet side to the furnace outlet side outside the travel region of the wire and is disposed in the furnace, and both ends in the longitudinal direction are open to the outside of the furnace,
The tubular body is formed to be longer than the length in the longitudinal direction, and the tip can be inserted into the tubular body from the open end of the tubular body to the open other end of the tubular body. A guiding rod for guiding the tubular body from the open end to the open other end,
With
In the tubular body, on the peripheral surface of the tubular body, the width is larger than the diameter of the wire rod and smaller than the diameter of the guide rod, and a slit hole communicating the tubular body and the tubular body running area is formed from one open end of the tubular body to another. It is characterized by being formed continuously over the end.
[0012]
In the fluidized bed furnace passage apparatus for heat treating a wire rod according to the second aspect of the present invention, in the configuration of the first aspect, a through hole that allows a fluid to pass therethrough is formed in a peripheral surface of the tubular body. I do.
[0013]
According to a third aspect of the present invention, there is provided a fluidized bed furnace for heat treatment of a wire rod according to the second aspect, further comprising a nozzle provided in the furnace and for injecting gas into a passage hole of the tubular body. It is characterized by.
[0014]
[Action]
According to the above configuration, a plurality of wires are aligned and continuously run in the furnace of the fluidized bed furnace to perform heat treatment on the wires.
[0015]
In the case where the wire is cut in the course of traveling in the furnace, a new wire is required.
[0016]
For this purpose, first, a wire to be passed is fastened to the tip of the guide rod, the tip of the guide rod is inserted into the tubular body from one open end of the tubular body, and the tubular body is opened through the tubular body. Take out of the furnace from the other end. The wire is removed from the tip of the guide rod that has come out of the furnace, the wire is taken out of the tubular body through the slit hole, and moved to a predetermined position in the travel region of the wire. This completes the route.
[0017]
The slit hole has a width smaller than the diameter of the guide rod and larger than the diameter of the wire. Therefore, the guide rod does not deviate from the tubular body in a direction perpendicular to the longitudinal direction of the tubular body upon insertion into the tubular body, while the wire rod may exit the tubular body in a direction perpendicular to the longitudinal direction of the tubular body. it can.
[0018]
This eliminates the connection with other wires such as joining the wire to be connected to another wire, and when performing a new wire in the fluidized bed furnace, facilitates the wire, and It is possible to prevent disconnection at the time of passage.
[0019]
In particular, it is not necessary to deal with the high temperature environment in the fluidized bed furnace when passing wires, and it is effective in a closed type fluidized bed furnace where appropriate heat treatment is ensured without the temperature in the fluidized bed furnace fluctuating. It is a target.
[0020]
According to the configuration of the second aspect, the fluid material passes through the passage hole, so that the fluid material entering the tubular body can easily go out of the tubular body, the fluid material does not accumulate in the tubular body, and the fluid material is guided by the guide rod. There is no hindrance to the insertion into the tubular body.
.
[0021]
According to the configuration of the third aspect, the gas is ejected from the nozzle to the passage hole, and the accumulation of the fluid material in the tubular body is effectively prevented.
[0022]
【Example】
An embodiment of a fluidized bed furnace wire passage apparatus for heat treatment of a wire rod according to the present invention will be described with reference to FIGS.
[0023]
The fluidized bed furnace 10 shown in FIG. 1 is used for cooling during the heat treatment in the manufacturing process of the wire 18 such as a steel cord or a wire rope. This fluidized bed furnace contains a fluidized material 12 in a furnace, and has a furnace inlet 14 formed at one end of the fluidized bed furnace 10 and a furnace outlet 16 formed at the other end. Each of the furnace inlet 14 and the furnace outlet 16 has a rectangular hole shape elongated in the horizontal direction, and a plurality of wires (six wires are shown in FIG. 1) 18 are unreeled from a reel (not shown). Similarly, by being taken up by a take-up device (not shown), a predetermined interval is provided along the longitudinal direction of the furnace inlet 14 and the furnace outlet 16, the furnace is drawn from the furnace inlet 14 to the furnace outlet 16 in the furnace, and is continuously driven. It has become so.
[0024]
A tubular body 20 is arranged in the furnace. The tubular body 20 is formed to be long from the furnace inlet 14 to the furnace outlet 16 and has a rectangular shape when viewed from the longitudinal direction. Both ends in the longitudinal direction of the tubular body 20 are located at one end in the longitudinal direction of the furnace inlet 14 and the furnace outlet 16 facing each other, and are open to the outside of the furnace. The tubular body 20 is disposed outside the traveling area 22 of the wire 18.
[0025]
As shown in FIG. 3, the guide rod 24 can be inserted into the inside of the tubular body 20 from one open end (furnace inlet side end) to the other open end (furnace outlet side end) of the tubular body 20. . The guide rod 24 has a cylindrical shape and is longer than the longitudinal dimension of the tubular body 20.
[0026]
On a surface (peripheral surface) along the longitudinal direction of the tubular body 20, a slit hole 26 (see FIG. 2) opened toward the traveling region 22 of the wire 18 is formed. It is formed continuously over both ends.
[0027]
The width w of the slit hole 26 is made larger than the diameter of the wire 18 and smaller than the diameter of the guide rod 24.
[0028]
In addition, as the fluid material 12, for example, zircon sand (a natural product having Zr as a main component) can be used. By circulating gas in the fluidized-bed furnace 10 with a device (not shown), the fluidized material 12 is agitated in the furnace, and in this agitated state, the fluidized material comes into contact with the wire 18 and heat is transferred to the wire 18. The fluid material 12 is, for example, in a granular form of about 0.2 mm.
[0029]
According to the above-described configuration, the plurality of wires 18 are aligned and continuously run through the furnace of the fluidized bed furnace 10 to perform the heat treatment on the wires 18.
[0030]
In the case where the wire 18 is cut in the process of traveling in the furnace (not limited to the disconnection), a new wire is required.
[0031]
This new line is made as follows.
First, the end of the wire 18 to be passed through is fixed to the tip of the guide rod 24. This can be easily realized, for example, by forming a locking hole 28 at the tip of the guide rod 24 and inserting and locking the wire 18 to be passed through the locking hole 28. The fastening of the wire 18 can be performed by other means such as joining by welding or the like if it can be removed.
[0032]
Next, the tip of the guide rod 24 to which the wire 18 to be passed is fixed is inserted into the tubular body 20 from the furnace inlet side end of the tubular body 20 (inserted in the direction of the arrow IN), and the leading end is inserted. The insertion of the guide rod 24 is continued until it passes through the end of the tubular body 20 on the furnace outlet side. Thereby, the wire 18 is guided from the furnace inlet side end to the furnace outlet side end in the tubular body 20 (see FIG. 4).
[0033]
After the tip of the guide rod 24 comes out of the furnace outlet side end, the wire 20 is removed from the tip, and the wire 20 goes out of the tubular body 20 through the slit hole 26 and moves to a predetermined position in the traveling area 22.
[0034]
This completes the route.
Since the slit hole 26 is smaller than the diameter of the guide rod 24 and larger than the diameter of the wire 18, the guide rod 24 is inserted into the tubular body 20 in a direction perpendicular to the longitudinal direction of the tubular body 20. The wire 18 can exit the tubular body 20 in a direction perpendicular to the longitudinal direction of the tubular body 20 without departing from the inside.
[0035]
This eliminates the involvement of other wires such as joining a wire to be passed to another wire, and facilitates the passage of a new wire in the furnace of the fluidized bed furnace 10, and In addition, it is possible to prevent the disconnection during the connection.
[0036]
In particular, it is effective for a closed fluidized-bed furnace in which it is not necessary to deal with a high-temperature environment in the furnace when a wire is passed, and a proper heat treatment is ensured without the temperature in the furnace fluctuating.
[0037]
In addition, as shown in FIG. 3, it is possible to form a plurality of passage holes 30 on the peripheral surface of the tubular body 20. According to the passage hole 30, since the fluid material 12 passes through the passage hole 30, the fluid material 12 entering the tubular body 20 can easily go out of the tubular body 20 (by the presence of the slit holes 26 in the tubular body 20). The fluid material 12 enters the tubular body 20 through the slit hole 26. When the guide rod 24 is inserted into the tubular body 20, the fluid material 12 entering the tubular body 20 does not hinder the insertion. Needs to go out of the tubular body 20.), The fluid material 12 does not accumulate in the tubular body 20, and the fluid material 12 does not hinder the insertion of the guide rod 24 into the tubular body 20. The passage hole 30 can be formed on any of the lower surface, the upper surface, and the left and right side surfaces of the peripheral surface of the tubular body 20, whereby the fluid material 12 entering the tubular body 20 can be formed outside the tubular body 20. Although it is easier to get out, it may be formed on any one of the peripheral surfaces, for example, without forming on all the surfaces.
[0038]
As shown in FIG. 4, a tubular nozzle 33 is disposed below the tubular body 20 along the longitudinal direction of the tubular body 20, and is formed on the lower surface of the tubular body 20 on the peripheral surface of the nozzle 33. A plurality of passing holes 30 facing each of the passing holes 30 or a single slit-shaped passing hole 30 integrally facing each of them including each of the passing holes 30 formed on the lower surface of the tubular body 20. In addition to the provision, a guide 34 can be provided below the tubular body 20. The guide 34 is formed in a C shape toward the nozzle 33, and guides the gas ejected from the nozzle hole 32 of the nozzle 33 toward the passage hole 30 on the lower surface of the tubular body 20.
[0039]
According to this, gas is ejected from the nozzle hole 32 of the nozzle 33 and is supplied into the tubular body 20 through the passage hole 30 on the lower surface of the tubular body 20, and the fluid material 12 is supplied to another surface such as the upper surface of the tubular body 20. It is pushed out of the tubular body 20 through the through hole 30 formed in the peripheral surface, and is effectively prevented from accumulating in the tubular body 20.
[0040]
In addition, even if the nozzle is not provided in the longitudinal direction of the annular body 20, by disposing the nozzle on the outlet side and the inlet side of the fluidized-bed furnace 10, the nozzle is provided on the entrance side where the fluid 12 is hard to flow (as described above) The fluidized material 12 is agitated by circulating gas in the furnace by means of a device not shown, but the agitated state is weak at the entrance and exit of the fluidized-bed furnace. can do.
[0041]
Note that the present invention is not limited to the above embodiment, and various modifications are possible. For example, in the above-described embodiment, the fluidized bed furnace used for cooling in the heat treatment of the wire rod has been described. However, the heat treatment is not limited to the cooling treatment, and a heating treatment is also possible.
[0042]
Further, the position and shape of the tubular body in the furnace, the shape of the guide rod, the shape of the passage holes, the number thereof, the number of wires, and the like are not limited to those in the above embodiment.
[0043]
Further, in the above embodiment, the guide rod 24 has its tip inserted from the furnace inlet side to the furnace outlet side. Conversely, the guide rod 24 is inserted such that the tip is inserted from the furnace outlet side to the furnace inlet side. Is also good.
[0044]
【The invention's effect】
As described above, according to the fluidized bed furnace passage device for heat treatment of a wire rod according to the present invention, when a new passage is performed in the fluidized bed furnace, the passage is facilitated, and at the time of passage. An excellent effect that prevents disconnection and is particularly effective in a closed type fluidized bed furnace can be achieved.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view showing a fluidized bed furnace for heat treatment of a wire to which a wire passing device according to the present invention is applied.
FIG. 2 is a cross-sectional view of a fluidized bed furnace for heat treatment of a wire to which the wire passing device according to the present invention is applied, as viewed from a longitudinal direction of a tubular body.
FIG. 3 is a perspective view showing a tubular body and a guide rod, respectively.
FIG. 4 is a cross-sectional view showing a state in which a guide rod is inserted into the tubular body, viewed from a longitudinal direction of the tubular body.
[Explanation of symbols]
Reference Signs List 10 Fluidized bed furnace for heat treatment 12 Fluid material 14 Furnace inlet 16 Furnace outlet 18 Wire rod 20 Tubular body 24 Guide rod 26 Slit hole 30 Passage hole 33 Nozzle

Claims (3)

Used in a fluidized bed furnace for heat treatment of wires that heats the wires by continuously aligning multiple wires in the furnace containing the fluidized material and continuously running from the furnace inlet to the furnace outlet. In the fluidized bed furnace wire passage device for heat treatment of wire rods,
A tubular body that is elongated in the furnace from the furnace inlet side to the furnace outlet side outside the travel region of the wire and is disposed in the furnace, and both ends in the longitudinal direction are open to the outside of the furnace,
The tubular body is formed to be longer than the length in the longitudinal direction, and the tip can be inserted into the tubular body from the open end of the tubular body to the open other end of the tubular body. A guiding rod for guiding the tubular body from the open end to the open other end,
With
In the tubular body, on the peripheral surface of the tubular body, the width is larger than the diameter of the wire rod and smaller than the diameter of the guide rod, and a slit hole communicating the tubular body and the tubular body running area is formed from one open end of the tubular body to another. A fluidized bed furnace passage device for heat treatment of a wire rod, which is formed continuously over the end. The fluidized-bed furnace passage device for heat-treating a wire according to claim 1, wherein a passage hole through which the fluid is allowed to pass is formed in a peripheral surface of the tubular body. The fluidized bed furnace passage apparatus for heat treatment of a wire rod according to claim 2, further comprising a nozzle provided in the furnace and configured to eject a gas into a passage hole of the tubular body.

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