JP2016160497A - Heat treatment method for amorphous soft magnetic alloy and heat treatment device for amorphous soft magnetic alloy - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat treatment method for an amorphous soft magnetic alloy capable of subjecting an amorphous soft magnetic material to heat treatment at a stable heat treatment temperature without breaking the same.SOLUTION: Provided is a heat treatment method for an amorphous soft magnetic alloy comprising: a step (a) where a guide part of guiding the belt-like object to be heat-treated into a fluid for heat treatment is contacted with the fluid held to a prescribed temperature, and the fluid is held to a temperature at which the object to be heat-treated is subjected to heat treatment; a step (b) where a belt-like amorphous soft magnetic alloy and a belt-like reinforcing part are connected in the length direction of the belt to form the above object to be heat-treated; a step (c) where, in the object to be heat-treated, only the reinforcing part is immersed into the fluid, and the upper face of the reinforcing part is contacted with the part in the fluid in the guide part; and a step (d) where, with the part in the fluid in the guide part as a guide, while pulling up the reinforcing part from the fluid, the amorphous soft magnetic alloy is immersed into the fluid, and at least a part of the amorphous soft magnetic alloy is crystallized by heat conduction from the fluid.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an amorphous soft magnetic alloy heat treatment method and an amorphous soft magnetic alloy heat treatment apparatus.

  The soft magnetic powder used for the dust core is a band-shaped amorphous soft magnetic material made of an alloy melted using a single roll method or the like, and the amorphous soft magnetic material is pulverized into a powder form. There is.

  On the other hand, when a powder magnetic core is manufactured using an amorphous soft magnetic material as it is in an amorphous state, if the powder is heated in the shape of a powder magnetic core, the alloy temperature is increased due to heat generated by the phase transformation. As a result, the crystal characteristics become coarser and impurities are generated, which may deteriorate the magnetic properties.

  Therefore, Patent Document 1 proposes a structure in which at least a part of an amorphous soft magnetic material is crystallized.

JP 2008-294411 A

  Here, in order to crystallize the amorphous soft magnetic material, it is necessary to heat treat the amorphous soft magnetic material.

  However, the band-shaped amorphous soft magnetic material is very brittle especially after crystallization, and thus has a problem that it is easily broken during heat treatment. This point was particularly remarkable when heating the band-shaped amorphous soft magnetic material in the heated liquid.

  In order to prevent breakage, there is also a method in which a strip-like amorphous soft magnetic material is wound around a draw roll and a take-up roll and immersed in a liquid previously held at a heat treatment temperature via a guide roller that determines a conveyance path. is there. However, in this method, when the amorphous soft magnetic material is immersed, the temperature of the liquid changes due to the temperature difference between the temperature of the guide roller before immersion and the temperature of the guide roller after immersion. There was a problem that the heat treatment temperature was not stable.

  The present invention is for solving the above-mentioned problems. That is, an object of the present invention is to provide a heat treatment method for an amorphous soft magnetic alloy capable of performing heat treatment at a stable heat treatment temperature without breaking the amorphous soft magnetic material.

  In order to solve the above-described problems, the first aspect of the present invention is as follows: (a) a guide portion that guides a strip-shaped object to be heat-treated into a fluid for heat treatment is brought into contact with the fluid held at a predetermined temperature. The fluid is held at a temperature at which the object to be heat treated is heat treated, and (b) a band-shaped amorphous soft magnetic alloy and a band-shaped reinforcing portion are connected in the length direction of the band to form the object to be heat-treated. (C) Of the material to be heat treated, only the reinforcing part is immersed in the fluid, the upper part of the reinforcing part is brought into contact with a part of the guide part that is in the fluid, and (d) of the guide part. The amorphous soft magnetic alloy is immersed in the fluid while lifting the reinforcing portion from the fluid using a portion in the fluid as a guide, and at least the amorphous soft magnetic alloy is heated by heat transfer from the fluid. Heat treatment of an amorphous soft magnetic alloy having a portion to crystallize It is a method.

  According to a second aspect of the present invention, there is provided a container for holding a fluid for heat-treating a band-shaped amorphous soft magnetic alloy, and at least a part of the fluid in the state where the fluid is held in the container. Is a heat treatment apparatus for an amorphous soft magnetic alloy having a guide portion that is provided at a position where the amorphous soft magnetic alloy is in contact and guides the amorphous soft magnetic alloy into a heat treatment fluid.

  ADVANTAGE OF THE INVENTION According to this invention, the heat processing method of the amorphous soft magnetic alloy which can heat-process at the stable heat processing temperature, without breaking an amorphous soft magnetic material can be provided.

It is a figure which shows the heat processing apparatus 1 which concerns on embodiment of this invention. It is a flowchart which shows the heat processing method of the amorphous soft magnetic alloy using the heat processing apparatus 1 which concerns on embodiment of this invention. It is a figure which shows the heat processing method of the amorphous soft magnetic alloy using the heat processing apparatus 1 which concerns on embodiment of this invention. It is a figure which shows the heat processing method of the amorphous soft magnetic alloy using the heat processing apparatus 1 which concerns on embodiment of this invention. It is a figure which shows the heat processing method of the amorphous soft magnetic alloy using the heat processing apparatus 1 which concerns on embodiment of this invention. It is a figure which shows the heat processing method of the amorphous soft magnetic alloy using the heat processing apparatus 1 which concerns on embodiment of this invention. It is a figure which shows the heat processing method of the amorphous soft magnetic alloy using the heat processing apparatus 1 which concerns on embodiment of this invention. It is a figure which shows the heat processing method of the amorphous soft magnetic alloy using the heat processing apparatus 1 which concerns on embodiment of this invention. It is a figure which shows the heat processing method of the amorphous soft magnetic alloy using the heat processing apparatus 1 which concerns on embodiment of this invention. It is a figure which shows the heat processing method of the amorphous soft magnetic alloy using the heat processing apparatus 51 which concerns on a comparative example. It is a figure which shows the heat processing method of the amorphous soft magnetic alloy using the heat processing apparatus 51 which concerns on a comparative example. It is a figure which shows the heat processing method of the amorphous soft magnetic alloy using the heat processing apparatus 51 which concerns on a comparative example. It is a graph which shows the fluctuation | variation with the time of the temperature in the salt bath during the heat processing in an Example and a comparative example.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  First, the configuration of the heat treatment apparatus 1 according to the present embodiment will be described with reference to FIG.

  Here, as the heat treatment apparatus 1, an apparatus for crystallizing a band-like amorphous soft magnetic alloy by heat treatment is illustrated. In the following description, “crystallization” refers to depositing nanocrystals, and when the amorphous soft magnetic alloy is an Fe-based soft magnetic alloy, it refers to depositing nanocrystals such as an α-iron phase.

  As shown in FIG. 1, the heat treatment apparatus 1 includes a container 22 that holds a fluid 21 that heat-treats a band-shaped amorphous soft magnetic alloy, and a fluid 21 in a state where the fluid 21 is held in the container 22. And a guide roller 13 serving as a guide portion for guiding the amorphous soft magnetic alloy into the fluid 21.

  The heat treatment apparatus 1 has a heater 23 for heating the fluid 21 around the container 22.

  The heat treatment apparatus 1 also winds the amorphous soft magnetic alloy after the heat treatment, a winding roll 16 as a winding portion, and an auxiliary for interposing the amorphous soft magnetic alloy in cooperation with the winding roll 16 It has a roller 17. Here, the auxiliary roller 17 is provided above the winding roll 16. Here, “provided above” means that one member is provided at a higher position in the vertical direction, and the same applies to the following description. For example, in FIG. 1, the direction represented by the arrow A means a vertically upward direction, and therefore, the direction higher than the direction A is “upward”. Conversely, the lower one in the direction of A is “downward”.

  Further, in the following definition, the direction of A is “upward”, and the direction of B, which is the opposite direction in parallel with A, is “downward”.

  The heat treatment apparatus 1 further includes a downstream roller 14 provided between the guide roller 13 and the take-up roll 16 above the container 22, more precisely above the liquid level 41 of the fluid 21, and a downstream roller. 14 and an up-and-down roller 15 provided between the take-up roll 16 and movable up and down so as to straddle a conveying path 31 that is a surface connecting the downstream roller 14 and the upper end of the take-up roll 16. Here, the vertical movement indicates movement in the directions of A and B in FIG. The elevating roller 15 is movable between a lower limit position 15a and an upper limit position 15b by using a driving device (not shown).

  Further, the heat treatment apparatus 1 includes a drawing roll 11 as a drawing portion for drawing out the amorphous soft magnetic alloy, and a position above the container 22, more precisely above the liquid level 41 of the fluid 21, and the drawing roll 11 and the guide. An upstream roller 12 is provided between the rollers 13.

In FIG. 1, the transport path 31 of the band-shaped amorphous soft magnetic alloy during the heat treatment is indicated by a dotted line. That is, although details will be described later, after the amorphous soft magnetic alloy is drawn from the pulling roll 11, the upstream roller 12 and the lower surface of the amorphous soft magnetic alloy, that is, the lower surface in the vertical direction are in contact with each other. The guide roller 13 and the upper surface of the amorphous soft magnetic alloy, that is, the upper surface in the vertical direction are in contact with each other, and the downstream roller 14 and the lower surface of the amorphous soft magnetic alloy are in contact with each other. The paper is wound around the take-up roll 16 while being sandwiched between the take-up roll 16 and the auxiliary roller 17. In this process, at least a part of the surface of the amorphous soft magnetic alloy comes into contact with the fluid 21, so that the amorphous soft magnetic alloy is heat-treated by heat transfer from the fluid 21, and the amorphous soft magnetic alloy At least a portion is crystallized.
The above is the description of the configuration of the heat treatment apparatus 1.

  Next, a heat treatment method using the heat treatment apparatus 1 will be described with reference to FIGS.

  In the heat treatment method described below, each procedure may be performed by an operator, or may be performed automatically using a robot or the like having a control unit.

  In the state before the heat treatment, the elevating roller 15 is assumed to be at the lower limit position 15a.

  First, the control unit of the operator or the robot heats and holds the fluid 21 using the heater 23 with the fluid 21 in the container 22 in contact with the guide roller 13 (S1 in FIG. 2). The holding temperature at this time is a temperature at which the amorphous soft magnetic alloy 32 shown in FIG.

  The fluid 21 is not particularly limited as long as it can be heat treated without reacting with the amorphous soft magnetic alloy 32 and is a fluid at the heat treatment temperature. For example, the fluid 21 may be a molten metal such as Sn or a nitrate-based molten salt.

  Next, the worker or the robot attaches the strip-shaped amorphous soft magnetic alloy 32 around the pulling roll 11 (S2 in FIG. 2).

  Here, the amorphous soft magnetic alloy 32 includes, for example, an Fe-based material, but is not limited thereto.

  Next, an operator or a robot prepares a belt-shaped reinforcing portion 33 as shown in FIG. 3, and includes an end portion in the length direction of the reinforcing portion 33 and an end portion in the length direction of the amorphous soft magnetic alloy 32. Are joined in the length direction of the band (S3 in FIG. 2). Here, the joined portion shown in FIG.

  The material constituting the reinforcing portion 33 has a certain amount of specific heat, protects the end of the amorphous soft magnetic alloy 32, is chemically stable when immersed in the fluid 21, and is immersed in the fluid 21. The material is not particularly limited as long as the material has a mechanical strength that does not break due to the tension generated by winding.

  Further, as the material of the reinforcing portion 33, a material having a numerical value close to the specific heat, thermal conductivity, and linear expansion coefficient of the amorphous soft magnetic alloy 32 is preferable.

  An example of a material that satisfies the above conditions is nickel when the amorphous soft magnetic alloy 32 is an Fe-based soft magnetic alloy.

  The shape and dimensions of the reinforcing portion 33 are preferably a band-like shape having dimensions close to the width and thickness of the amorphous soft magnetic alloy 32.

  Furthermore, the joining method of the amorphous soft magnetic alloy 32 and the reinforcing portion 33 includes, for example, welding. However, the joining method is not limited to welding as long as the joining portion 34 is not broken by a tension generated by winding described later. .

  In addition, what joined the amorphous soft magnetic alloy 32 and the reinforcement part 33 is called the to-be-processed object 35 (refer FIG. 3) here.

  Next, as shown in FIG. 3, the worker or the robot arranges the object to be heat treated 35 along the transport path 31, and immerses only the reinforcing portion 33 in the fluid 21 (S4 in FIG. 2).

  That is, only the reinforcing portion 33 of the material to be heat treated 35 is immersed in the fluid 21, and the upper surface of the reinforcing portion 33 is brought into contact with the portion of the guide roller 13 that is in the fluid 21. Further, the open end of the reinforcing portion 33 in the length direction is wound around the winding roll 16 via the downstream roller 14.

  Next, the worker or robot starts heat treatment of the amorphous soft magnetic alloy 32 as shown in FIG. 4 (S5 in FIG. 2).

  Specifically, the operator or the robot drives the take-up roll 16 to convey the object to be heat-treated 35 along the conveyance path 31 in the direction C in FIG. 4, and the portion of the guide roller 13 in the fluid 21. The reinforcing part 33 is lifted from the fluid 21 using the above as a guide.

  At this time, since the amorphous soft magnetic alloy 32 is connected to the reinforcing portion 33, the amorphous soft magnetic alloy 32 is drawn from the pulling roll 11, and the upstream roller 12 and the lower surface of the amorphous soft magnetic alloy 32 are in contact with each other as shown in FIG. So as to be in contact with a portion of the guide roller 13 in the fluid 21.

  In this state, at least a part of the amorphous soft magnetic alloy 32 is crystallized by heat transfer from the fluid 21.

  The amorphous soft magnetic alloy 32 is heat-treated for a time corresponding to the rotational speed of the take-up roll 16, and the heat treatment is completed by being lifted from the fluid 21 as shown in FIG.

  Here, the operator or the control unit confirms the position of the joining portion 34 in the conveyance path 31 and determines whether or not it is in contact with the downstream roller 14 or just before contact. Alternatively, the process proceeds to S7 immediately before contact, and the heat treatment is continued otherwise (S6 in FIG. 2).

  When the joining portion 34 is in contact with the downstream roller 14 or immediately before contact, the lifting roller 15 is driven upward as shown in FIG. The contact time and the contact area between the joint 34 and the downstream roller 14 are reduced as compared with the case where the lift is not lifted (S7 in FIG. 2). Here, the lifting roller 15 is lifted to the upper limit position 15b.

  Next, the operator or the robot checks the position of the joining portion 34 in the transport path 31 and determines whether the joining portion 34 has passed through the downstream roller 14 or no longer in contact with the downstream roller 14. When it passes, it progresses to S9 (S8 of FIG. 2), and when the junction part 34 has not passed the downstream roller 14, the determination of S8 is continued until it passes.

  When the joining portion 34 passes the downstream roller 14, the elevating roller 15 is lowered in the direction of B in FIG. 7 so that the lower portion 15a is not in contact with the workpiece 35 below the workpiece 35. (S9 in FIG. 2).

  As described above, the contact time and the contact area between the joining portion 34 and the downstream roller 14 are reduced by using the lifting roller 15, and ideally, the joining portion 34 and the downstream roller 14 are not contacted or point-contacted. As a result, it is possible to prevent bending stress from being applied to the joint portion 34 and to prevent the amorphous soft magnetic alloy 32 embrittled by crystallization by heat treatment from breaking at the joint portion 34 as a starting point.

Thereafter, the amorphous soft magnetic alloy is pulled up from the fluid 21, and the reinforcing portion 33 is wound around the take-up roll 16 while sandwiching the amorphous soft magnetic alloy 32 between the take-up roll 16 and the auxiliary roller 17, as shown in FIG. Then, the amorphous soft magnetic alloy 32 is wound up as shown in FIG. In this way, by winding the object to be heat-treated 35 between the winding roll 16 and the auxiliary roller 17, the bending stress generated at the joint portion 34 is reduced as compared with the case of winding using only the winding roll 16. It is possible to prevent the amorphous soft magnetic alloy 32 from breaking at the joint 34 during winding.
The above is the description of the heat treatment method using the heat treatment apparatus 1.

  Thus, according to the present embodiment, when the amorphous soft magnetic alloy 32 is heat-treated, the amorphous soft magnetic alloy 32 is connected to the reinforcing portion 33, and the reinforcing portion 33 is connected to the fluid 21 using the guide roller 13 as a guide. Then, the amorphous soft magnetic alloy 32 is immersed in the fluid 21 by performing the heat treatment.

  Therefore, heat treatment can be performed at a stable heat treatment temperature without breaking the amorphous soft magnetic alloy 32.

  Hereinafter, based on an Example, this invention is demonstrated concretely.

(Example)
Attempts were made to crystallize the amorphous soft magnetic alloy 32 by heat treatment using the heat treatment apparatus 1. The specific procedure is as follows.

First, industrial iron, Fe-B, Fe-P, and electrolytic copper were weighed as raw materials for the amorphous soft magnetic alloy 32, and the raw materials were melted by high frequency melting and alloyed. Next, the melted alloy is rapidly cooled using a single roll quenching method to form a band-shaped amorphous soft magnetic alloy 32 having a width of 40 mm, a thickness of 25 μm, and a composition formula of Fe _84.3 B ₆ P ₉ Cu _0.7 at%. A Fe-based soft magnetic alloy ribbon was produced. When the manufactured Fe-based soft magnetic alloy band was measured by X-ray diffraction, it was confirmed to be an amorphous single phase. In the following description, the X-ray diffraction method is abbreviated as XRD.

  Next, the Fe-based soft magnetic alloy ribbon was cut in the length direction with a width of 30 mm by a cutter to obtain a Fe-based soft magnetic alloy ribbon before heat treatment.

  Next, as the heat treatment apparatus 1, an apparatus shown in FIG.

  Next, a raw material of nitric acid-based molten salt was put into the container 22 of the heat treatment apparatus 1, and the raw material was heated and melted with a heater 23 to form a molten salt, which was used as the fluid 21. The temperature of the molten salt was kept at 440 ° C.

  Next, the Fe-based soft magnetic alloy ribbon that had been cut to a width of 30 mm and before heat treatment was wound around a paper tube having the same width, and the paper tube was attached to the rotating shaft of the drawing roll 11.

  Next, a nickel band having a width of 30 mm and a thickness of 20 μm was prepared as the reinforcing portion 33, and one end of the nickel band and one end of the outermost periphery of the Fe-based soft magnetic alloy ribbon before heat treatment were joined by welding.

  Next, the other end of the nickel band was fixed to the take-up roll 16 with a tape and placed on the transport path 31 shown in FIG. Although a part of the conveyance path 31 also contains molten salt, only the nickel band is disposed there, so that the joining portion 34 is located between the upstream roller 12 and the liquid surface 41 of the molten salt. Arranged. From this state, a motor (not shown) attached to the rotating shaft of the take-up roll 16 is rotated to take up the nickel band and draw in the Fe-based soft magnetic alloy ribbon before heat treatment and immerse it in the molten salt for heat treatment. Started.

  At this time, the rotation speed of the motor was adjusted so that the time during which the Fe-based soft magnetic alloy ribbon was immersed in the molten salt, that is, the heat treatment time was 4 seconds. After the start of the heat treatment, when the joining portion 34 comes out of the molten salt and moves to a position before the downstream roller 14, the lifting roller 15 is raised so that the joining portion 34 does not come into contact with the downstream roller 14. . After the joining portion 34 passed the downstream roller 14, the lifting roller 15 was lowered so that the joining portion 34 did not come into contact with the lifting roller 15. Thereafter, the joining portion 34 moved to the take-up roll 16 and was taken up by the take-up roll 16 while being sandwiched between the auxiliary rollers 17. By this heat treatment method, the Fe-based soft magnetic alloy ribbon was not broken after the heat treatment at the joint 34. This is presumably because the bending stress generated at the joint 34 can be suppressed to 0 or small. After the joint 34, the heat-treated Fe-based soft magnetic alloy ribbon was sequentially wound by the take-up roll 16 through the downstream roller 14, but after the heat treatment, the Fe-based soft magnetic alloy ribbon was broken. No continuous heat treatment was possible. When the XRD pattern by XRD was examined for the ribbon thus heat-treated, a peak derived from the α-Fe crystal was confirmed, and it was confirmed that the desired heat treatment and accompanying crystallization were achieved.

(Comparative example)
Next, using the heat treatment apparatus 51 shown in FIGS. 10 to 12 as a comparative example, the same Fe-based soft magnetic alloy ribbon as in the example was heat treated at the same heat treatment temperature and heat treatment time using the same molten salt.

  As shown in FIG. 10, the heat treatment apparatus 51 of the comparative example has no auxiliary roller 17 and lift roller 15 and the guide roller 13 is not in the fluid 21 before the heat treatment, compared to the heat treatment apparatus 1 of the embodiment. Different. In FIG. 10, the elements having the same functions as those in FIG.

  Using this heat treatment apparatus 51, heat treatment was performed on the Fe-based soft magnetic alloy ribbon in the following procedure.

  First, as shown in FIG. 10, an Fe-based soft magnetic alloy ribbon is attached to the drawing roll 11 as a strip-shaped amorphous soft magnetic alloy 32, and then one end of the Fe-based soft magnetic alloy ribbon is attached to the take-up roll 16. The lower surface of the Fe-based soft magnetic alloy ribbon was brought into contact with the upstream roller 12 and the downstream roller 14. In this state, in the Fe-based soft magnetic alloy ribbon, a portion between the upstream roller 12 and the downstream roller 14 has an upper guide roller 13 and a lower fluid 21, and the guide roller 13, Neither the Fe-based soft magnetic alloy ribbon nor the fluid 21 are in contact with each other. Further, as apparent from this configuration, the reinforcing portion 33 was not used in the comparative example.

  Next, as shown in FIG. 11 from the state shown in FIG. 10, the guide roller 13 is moved in the direction of B in FIG. 11 and immersed in the molten salt together with the Fe-based soft magnetic alloy ribbon, as shown in FIG. While winding the Fe-based soft magnetic alloy ribbon using the winding roll 16, the Fe-based soft magnetic alloy ribbon was heat-treated.

  Other conditions were the same as in the example.

  FIG. 13 shows the variation with time of the temperature of the fluid 21 during the heat treatment in Examples and Comparative Examples. The temperature of the fluid 21 was measured in the vicinity of the upstream roller 12 in both the examples and the comparative examples.

  As is clear from FIG. 13, in the example, the temperature variation of the fluid 21 during the heat treatment from the start of the heat treatment was 1 ° C. or less.

  On the other hand, in the comparative example, the temperature of the fluid 21 greatly decreased immediately after the start of the heat treatment, and the temperature decreased to about 12 ° C. 5 minutes after the start. Thereafter, the temperature gradually increased, but did not return to the temperature just before the heat treatment even after 1 hour.

  From the above results, it was found that heat treatment was possible at a stable heat treatment temperature without breaking the amorphous soft magnetic material in the examples.

  As mentioned above, although this invention was demonstrated based on embodiment, these embodiment is for demonstrating invention only with an example. Therefore, these embodiments do not mean that the applicant limits the scope of the present invention to these. It is natural for those skilled in the art to come up with various modifications and improvements based on the above description. Therefore, the modified examples and improved examples are also within the scope of the present invention.

1: Heat treatment device 11: Drawer roll 12: Upstream roller 13: Guide roller 14: Downstream roller 15: Lift roller 15a: Lower limit position 15b: Upper limit position 16: Winding roll 17: Auxiliary roller 21: Fluid 22: Container 23 : Heater 31: Conveyance path 32: Amorphous soft magnetic alloy 33: Reinforcement part 34: Joining part 35: Material to be heat-treated 41: Liquid surface 51: Heat treatment apparatus

Claims (10)

(A) A guide portion that guides a strip-shaped heat-treated material into a heat-treating fluid is brought into contact with the fluid held at a predetermined temperature, and the fluid is held at a temperature at which the heat-treated material is heat-treated,
(B) A band-shaped amorphous soft magnetic alloy and a band-shaped reinforcing portion are joined in the length direction of the band to form the object to be heat-treated,
(C) Of the material to be heat treated, only the reinforcing part is immersed in the fluid, and the upper surface of the reinforcing part is brought into contact with a part of the guide part that is in the fluid,
(D) immersing the amorphous soft magnetic alloy in the fluid while lifting the reinforcing portion from the fluid using a portion of the guide portion in the fluid as a guide, and at least the heat transfer from the fluid Crystallizing a part of the amorphous soft magnetic alloy;
A method for heat treatment of an amorphous soft magnetic alloy having   The heat treatment method for an amorphous soft magnetic alloy according to claim 1, wherein the guide portion is a roller. (E) The amorphous soft magnetic alloy after the heat treatment is lifted from the fluid, and the amorphous soft magnetic alloy is wound around the winding portion while the amorphous soft magnetic alloy is sandwiched between the winding portion and an auxiliary roller. take,
The method for heat-treating an amorphous soft magnetic alloy according to claim 1 or 2, wherein: The winding part (e) is above the liquid level of the fluid and while the lower surface side of the object to be heat-treated is brought into contact with a downstream roller provided between the guide part and the winding part. The amorphous soft magnetic alloy is wound on
In addition, the elevating roller provided between the downstream roller and the take-up portion is subjected to the heat treatment before the joining portion of the amorphous soft magnetic alloy and the reinforcing portion comes into contact with the downstream roller. Arranged at a position below and not in contact with the object to be heat-treated,
When the joining part of the amorphous soft magnetic alloy and the reinforcing part comes into contact with the downstream roller, the reinforcing part is lifted, and the contact time between the joining part and the downstream roller as compared with the case where it is not lifted, and Reduce the contact area,
The elevating roller is returned to a position below the object to be heat-treated and not in contact with the object to be heat-treated after the joining portion has passed the downstream roller,
A method for heat-treating an amorphous soft magnetic alloy according to claim 3.   In (c), the material to be heat-treated is disposed above the fluid level and from the open end side in the length direction of the reinforcing portion while being in contact with the upstream roller between the drawing portion and the guide portion. The heat treatment method for an amorphous soft magnetic alloy according to claim 1, wherein the amorphous soft magnetic alloy is immersed in the fluid and brought into contact with a portion of the guide portion in the fluid. A container for holding a fluid for heat-treating the band-shaped amorphous soft magnetic alloy;
A guide portion provided in the container at a position where at least a part of the fluid comes into contact with the fluid in a state where the fluid is held in the container, and guides the amorphous soft magnetic alloy into the fluid for heat treatment; ,
A heat treatment apparatus for an amorphous soft magnetic alloy having:   The amorphous soft magnetic alloy heat treatment apparatus according to claim 6, wherein the guide portion is a roller. A winding portion for winding the amorphous soft magnetic alloy after the heat treatment;
An auxiliary roller that sandwiches the winding portion and the amorphous soft magnetic alloy;
The heat treatment apparatus for an amorphous soft magnetic alloy according to claim 6 or 7, wherein: A downstream roller provided above the container and between the guide part and the winding part;
An elevating roller provided between the downstream roller and the winding unit, and capable of vertically moving so as to straddle a surface connecting the downstream roller and the upper end of the winding unit;
The amorphous soft magnetic alloy heat treatment apparatus according to claim 8. A drawer portion for drawing out the amorphous soft magnetic alloy;
The heat treatment apparatus for an amorphous soft magnetic alloy according to any one of claims 6 to 9, further comprising an upstream roller provided above the container and between the drawer portion and the guide portion.

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