阅读说明：本技术 软磁合金铁芯热处理装置及方法 (Soft magnetic alloy iron core heat treatment device and method ) 是由 唐林冲 于 2019-12-19 设计创作，主要内容包括：本发明提出一种软磁合金铁芯热处理装置及方法,软磁合金铁芯热处理装置中包括底部设有开口的加热箱、设置在开口的正下方的炉胆、用于安放炉胆的平衡托架、控制平衡托架上下移动的升降机构、用于放置缠绕有导体的铁芯的托板、缠绕在铁芯上的导体,利用软磁合金铁芯热处理装置按照升温、保温、升温、保温、降温、施加磁场且降温、降温的步骤对铁芯进行热处理。本发明所述的软磁合金铁芯热处理装置及方法具有进出料过程稳定、确保热处理和施加磁场的效果的优点。(The invention provides a soft magnetic alloy iron core heat treatment device and a method, wherein the soft magnetic alloy iron core heat treatment device comprises a heating box with an opening at the bottom, a furnace pipe arranged right below the opening, a balance bracket for placing the furnace pipe, a lifting mechanism for controlling the balance bracket to move up and down, a supporting plate for placing an iron core wound with a conductor, and a conductor wound on the iron core. The device and the method for heat treatment of the soft magnetic alloy iron core have the advantages of stable feeding and discharging process and ensuring the effects of heat treatment and magnetic field application.)

1. The utility model provides a soft magnetic alloy iron core heat treatment device, a serial communication port, be equipped with the open-ended heating cabinet including the bottom, the stove courage, a balance bracket for laying the stove courage, the elevating system that control balance bracket reciprocated, a layer board for placing the iron core that the winding has the conductor, the conductor of winding on the iron core, the stove courage sets up under the open-ended, the bottom of stove courage is equipped with the second opening, the layer board corresponds the stove courage setting, the iron core sets up under the second open-ended, the iron core can pass in balance bracket and the second opening gets into the stove courage, be equipped with first connecting hole on the balance bracket, it sets up the second connecting hole to correspond first connecting hole on the layer board, the conductor passes the layer board and.

2. A soft magnetic alloy iron core heat treatment apparatus according to claim 1, wherein said supporting plate is provided with a wire groove, a wire is provided in the wire groove to be connected to the conductor, and then the wire is extended out of the supporting plate along the wire groove to be connected to a power supply.

3. A heat-treating apparatus for a soft magnetic alloy iron core according to claim 2, wherein said conductor comprises a wire winding wound around the iron core, and lead wires connected to both ends of the wire winding, the lead wires being connected to the lead wires.

4. A heat treatment apparatus for a soft magnetic alloy iron core according to claim 3, wherein said conductor is a wire winding made of copper, and the number of turns of the wire winding on the iron core is 5 to 3000.

5. A heat treatment method using the heat treatment apparatus for a soft magnetic alloy iron core according to any one of claims 1 to 4, characterized by comprising the steps of:

the iron core wound with the conductor enters a heating box from bottom to top;

the temperature in the heating box is raised to 280-450 ℃, and the temperature is kept for 40-50 min;

the temperature of the heating cavity is raised to 500-520 ℃, and the temperature is kept for 25-90 min;

when the temperature in the heating cavity is reduced to 480 ℃, the conductor is connected with a power supply, and a magnetic field is applied to the iron core through the conductor;

the conductor cuts off the power supply when the temperature is reduced to 420 ℃;

and removing the iron core from the heating cavity to the cooling chamber to be cooled to room temperature.

6. The method of claim 5, wherein the method of feeding the conductor-wound core into the heating chamber from the bottom up is:

placing the iron core wound with the wire winding on a supporting plate, connecting the wire winding with a lead through a lead, and placing the supporting plate right below the second opening;

the lifting mechanism drives the balance bracket to descend, so that the bottom surface of the balance bracket is in contact with the upper surface of the supporting plate, the iron core penetrates into the furnace pipe, the lifting mechanism stops running, and the balance bracket and the supporting plate are connected and fixed through screws to form a sealed furnace pipe;

the lifting mechanism controls the balance bracket to drive the sealed furnace pipe and the iron core in the sealed furnace pipe to rise and penetrate through the opening to enter the heating box until the upper surface of the balance bracket is contacted with the bottom surface of the heating box, and the lifting mechanism stops running.

7. The method of claim 5, wherein the nitrogen content in the cooling chamber is 98% or more.

8. The method of claim 5, wherein the temperature in the heating chamber is reduced at a rate of 3-5 ℃/min after the conductor is energized.

Technical Field

The invention relates to the field of heat treatment of soft magnetic alloy iron cores, in particular to a heat treatment device and a heat treatment method for a soft magnetic alloy iron core.

Background

The quality and advantages of the electromagnetic properties, consistency, and corresponding operating properties of the iron core are related to the quality of the raw materials of the iron core, the composition of the raw materials, and the manufacturing process, as well as the treatment process of the iron core and the related devices for performing the heat treatment process. When the conventional iron core heat treatment method works, an iron core is fed into a furnace from top to bottom through electric lifting, but the position of the iron core is changed due to the fact that the iron core is easy to shake in the process, a conductor for applying a magnetic field on the iron core is likely to be in contact with the conductor, the situation of short circuit occurs, the effect of applying the magnetic field cannot be guaranteed, meanwhile, the iron core is added into a furnace pipe through the method, the gravity of the iron core can be directly applied to the furnace pipe, and the service life of the furnace pipe is influenced by the pressure of the furnace pipe.

Disclosure of Invention

The object of the present invention is to provide a method for heat treatment of a soft magnetic alloy iron core that solves one or more of the above-mentioned problems of the prior art.

The invention provides a soft magnetic alloy iron core heat treatment device which comprises a heating box, a furnace, a balance bracket, a lifting mechanism, a supporting plate and a conductor, wherein the bottom of the heating box is provided with an opening, the balance bracket is used for placing the furnace, the lifting mechanism is used for controlling the balance bracket to move up and down, the supporting plate is used for placing an iron core wound with the conductor, and the conductor is wound on the iron core.

In some embodiments, the tray is provided with a wire groove, a wire is arranged in the wire groove and connected with the conductor, and then the wire extends out of the tray along the wire groove and is connected with a power supply.

In some embodiments, the conductor includes a wire winding wound around the core, and leads connected to both ends of the wire winding, the leads being connected to the wire.

In some embodiments, the conductor is a wire winding made of copper, and the number of turns of the wire winding on the iron core is 5-3000.

The heat treatment method by using the soft magnetic alloy iron core heat treatment device comprises the following steps:

the iron core wound with the conductor enters a heating box from bottom to top;

the temperature in the heating box is raised to 280-450 ℃, and the temperature is kept for 40-50 min;

the temperature of the heating cavity is raised to 500-520 ℃, and the temperature is kept for 25-90 min;

when the temperature in the heating cavity is reduced to 480 ℃, the conductor is connected with a power supply, and a magnetic field is applied to the iron core through the conductor;

the conductor cuts off the power supply when the temperature is reduced to 420 ℃;

and removing the iron core from the heating cavity to the cooling chamber to be cooled to room temperature.

In some embodiments, the method for feeding the iron core wound with the conductor into the heating box from the bottom up is as follows:

placing the iron core wound with the wire winding on a supporting plate, connecting the wire winding with a lead through a lead, and placing the supporting plate right below the second opening;

the lifting mechanism drives the balance bracket to descend, so that the bottom surface of the balance bracket is in contact with the upper surface of the supporting plate, the iron core penetrates into the furnace pipe, the lifting mechanism stops running, and the balance bracket and the supporting plate are connected and fixed through screws to form a sealed furnace pipe;

the lifting mechanism controls the balance bracket to drive the sealed furnace pipe and the iron core in the sealed furnace pipe to rise and penetrate through the opening to enter the heating box until the upper surface of the balance bracket is contacted with the bottom surface of the heating box, and the lifting mechanism stops running.

In certain embodiments, the nitrogen content within the cooling chamber is greater than or equal to 98%.

In certain embodiments, the temperature within the heating chamber after the conductor is powered down is decreased at a rate of 3-5 ℃/min.

The heat treatment device and the heat treatment method for the soft magnetic alloy iron core have the advantages that:

1. the iron core is placed from bottom to top, so that the feeding process of the iron core is more stable, and the effects of heat treatment and magnetic field application are further ensured;

2. the bell-type heating device has reasonable structure, forms a bell-type furnace with a heating component fixed above and an iron core moving up and down below, and saves 20-30% of energy compared with the traditional iron core heat treatment method;

3. the furnace feeding mode from bottom to top is adopted, the lifting process of the iron core is more stable, manual complicated operation is effectively saved, the iron core is prevented from being directly pressed on the furnace pipe, and the service life of the furnace pipe is prolonged by 50%;

4. the iron core treated by the soft magnetic alloy iron core heat treatment method has stable and reliable performance and sufficient magnetic field.

Drawings

FIG. 1 is a schematic view showing the construction of a heat treatment apparatus for a soft magnetic alloy iron core according to an embodiment of the present invention;

FIG. 2 is a schematic sectional view showing a heat treatment apparatus for a soft magnetic alloy iron core according to an embodiment of the present invention.

Detailed Description

As shown in fig. 1 and 2, the present invention provides a soft magnetic alloy iron core heat treatment apparatus, which comprises a main body frame 1, a heating box 2 with an opening at the bottom, a furnace 3 arranged corresponding to the heating box 2, a square balance bracket 6 for placing the furnace 3, a lifting mechanism for controlling the balance bracket 6 to move up and down, a supporting plate 9 for placing an iron core 7, and a conductor, wherein the conductor comprises a wire winding made of 5-3000 turns of copper wound on the iron core 7, and lead wires connected with two ends of the wire winding, the main body frame 1 is provided with four columns 501, two tracks, two first connecting seats 401 and two second connecting seats 404 corresponding to the first connecting seats 401, the heating box 2 is connected with the main body frame 1, the heating box 2 comprises a heating cavity 203, a heating assembly 202, a heat preservation and insulation layer 201, and a heating box outer shell, the heating cavity 203 is communicated with the opening, a heating component 202 is distributed on the outer side surface of the cavity wall of the heating cavity 203, a heat preservation and insulation layer 201 made of aluminum silicate heat preservation cotton is arranged between the cavity wall of the heating cavity 203 and the heating box outer shell body and avoids the heating component, the heating component 202 is composed of a plurality of heating resistance wires, the furnace pipe 3 is arranged under the opening, a second opening is arranged at the bottom of the furnace pipe 3, a third opening is arranged on the balance bracket 6 corresponding to the second opening and communicated with the second opening, the supporting plate 9 is arranged corresponding to the furnace pipe 3, a heat insulation box body 8 is arranged on the supporting plate 9, a through hole is reserved on the heat insulation box body 8 for a lead to pass through, a lead groove is arranged on the supporting plate 9, a lead is arranged in the lead groove and connected with the lead, then the lead extends out of the supporting plate 9 along the lead groove and is connected with a power supply, an iron core 7 is arranged on the heat insulation box body 8, a, the supporting plate 9 is placed on the trolley 10, the bottom of the trolley 10 is provided with a roller, the bottom of the roller is embedded in a track, the roller can move back and forth along the track, the balance bracket 6 is provided with a first connecting hole 601, the supporting plate 9 is provided with a second connecting hole 901 corresponding to the first connecting hole, the balance bracket 6 and the supporting plate 9 can pass through the first connecting hole 601 and the second connecting hole 901 by screws to form connection, the furnace pipe 3 adopts high temperature resistant stainless steel 3100, the lifting mechanism comprises two screw rod control components and four auxiliary sliding blocks 502, the screw rod control components are respectively arranged on two opposite sides of the balance bracket 6, each screw rod control component comprises a power transmission component, a screw rod 402 and a sliding block 403, the upper end and the lower end of the screw rod 402 are respectively embedded into the first connecting seat 401 and the second connecting seat 404, the sliding block 403 is sleeved on the lower end of the screw rod 402 and is connected with the, each power transmission assembly comprises a motor 407, a first corner gear 405 and a second corner gear 406, the first corner gear 405 is sleeved on the screw rod 402, the second corner gear 406 is sleeved on an output shaft of the motor 407, the first corner gear 405 is meshed with the second corner gear 406, the motor 407 drives the screw rod 402 to rotate through the first corner gear 405 and the second corner gear 406, the screw rod 402 rotates to drive the sliding block 403, the balance bracket 6 and the like to move up and down under the action of threads, the four corners of the movable balance bracket 6 are respectively provided with an auxiliary sliding block 502, one side of each auxiliary sliding block 502 is sleeved on the upright column 501, each auxiliary sliding block 502 moves up and down along the upright column 501 along with the balance bracket 6, the smoothness of the movable balance bracket 6 during up and down movement is effectively enhanced through the arrangement of the auxiliary sliding blocks 502, wherein the motor 407 is a bidirectional motor.

The heat treatment method by using the soft magnetic alloy iron core heat treatment device comprises the following steps:

step 1, placing an iron core 7 wound with a wire winding on a heat insulation box body 8, connecting the wire winding with a lead through a lead, then placing a supporting plate 9 supporting the iron core 7 and the heat insulation box body 8 on a trolley 10, pushing the trolley 10 to convey the iron core 7 to the position right below a third opening along a track, and entering step 2;

step 2, the lifting mechanism drives the balance bracket 6 to descend, so that the bottom surface of the balance bracket 6 is in contact with the upper surface of the supporting plate 9, the iron core 7 penetrates through the third opening and the second opening to enter the furnace pipe 3, the lifting mechanism stops running, the balance bracket 6 and the supporting plate 9 are connected and fixed through screws to form a sealed furnace pipe, and the step 3 is carried out;

step 3, the lifting mechanism controls the balance bracket 6 to drive the sealed furnace pipe and the iron core in the sealed furnace pipe to rise, the iron core penetrates through the opening to enter the heating cavity 203 until the upper surface of the balance bracket 6 is contacted with the bottom surface of the heating box 2, and the lifting mechanism stops running;

step 4, the heating assembly 202 is powered on to start heating while the steps 1 to 3 are carried out, the temperature in the heating cavity 203 is raised to 280-450 ℃, the temperature is kept unchanged for 40-50min after the operation of the step 3 is finished, and then the step 5 is carried out;

step 5, heating is continued through the heating assembly 202, the temperature of the heating cavity 203 is raised to 500-520 ℃, the temperature is kept for 25-90min, and then the step 5 is carried out;

step 6, stopping heating by the heating assembly 202, starting to reduce the temperature in the heating cavity 203, switching on a power supply by a lead when the temperature is reduced to 480 ℃, applying a magnetic field to the iron core 7 through a wire winding, and entering step 7;

step 7, electrifying the heating assembly 202, controlling the temperature in the heating cavity 203 to decrease at the rate of 3-5 ℃/min, disconnecting the wire from the power supply when the temperature in the heating cavity 203 decreases to 420 ℃, and entering step 8;

step 8, controlling the balance bracket 6 to descend through the lifting mechanism, enabling the bottom surface of the balance bracket 6 to be in contact with the trolley 10, stopping running of the lifting mechanism, dismounting the screw, controlling the balance bracket 6 to ascend through the lifting mechanism, enabling the iron core 7 to completely withdraw from the furnace pipe 3, stopping running of the lifting mechanism, and entering step 9;

and 9, pushing the iron core 7 subjected to heat treatment into a cooling chamber with the nitrogen content more than or equal to 98% by using a trolley 10, and cooling to room temperature.

Wherein the iron core 7 is a soft magnetic alloy iron core.

The foregoing is only a preferred form of the invention and it should be noted that several similar variations and modifications could be made by one skilled in the art without departing from the inventive concept and these should also be considered within the scope of the invention.