A nanocrystalline master alloy heat treatment apparatus

Abstract

The application relates to the technical field of heat treatment, in particular to a nanocrystalline master alloy heat treatment equipment, wherein the inner bottom end of a heat treatment furnace is connected with a hollow frame, second conduits are communicated at the bottom end four-corner positions of the hollow frame, each fixed pipe is connected with a spiral flow guide vane, a first chamber is arranged in a supporting table, and a plurality of micropores are arranged at the upper end of the first chamber. The gas in the fixed pipe is guided by the spiral flow guide vane, so that the gas released from the upper end of the fixed pipe forms a vortex flow, the vortex flow drives the gas at the four-corner positions in the heat treatment furnace to move upwards, thereby avoiding the slow flow speed of the gas at the four-corner positions and the bottom end region of the furnace wall in the heat treatment furnace, eliminating the formation of a low-speed area, and simultaneously, the gas released from the micropores performs air flushing on the nanocrystalline master alloy thin strips, the circulating flow effect of the gas between the nanocrystalline master alloy thin strips on the supporting table is improved, and the heat treatment effect on the nanocrystalline master alloy thin strips is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat treatment, in particular to a nanocrystalline master alloy heat treatment equipment. BACKGROUND

[0002] The nanocrystalline master alloy is an alloy mainly composed of iron and a small amount of Cu, Nb, Si, B and other elements. After the amorphous material is formed by the rapid solidification process, the microcrystals with a diameter of 10-20 nm are dispersedly distributed on the amorphous matrix by heat treatment. The nanocrystalline master alloy has excellent magnetic properties, good corrosion resistance and magnetic stability, and is an ideal low-cost high-performance soft magnetic material.

[0003] In the nanocrystalline master alloy processing process, heat treatment is an important process of nanocrystalline master alloy processing. Heat treatment can eliminate the internal stress of amorphous soft magnetic material, thereby reducing the coercive force, making the material more easily magnetized and demagnetized, and thus improving the soft magnetic properties. When heat treatment is performed, the nanocrystalline master alloy thin strip is placed on the support table in the heat treatment furnace, vacuum is extracted, and inert gas is introduced for heating and temperature rising. In order to improve the heat treatment effect, gas circulation in the treatment furnace is performed. However, during the gas circulation flow process, the flow rate of the four corner positions and the bottom end region of the furnace wall is too low, which leads to uneven distribution of the circulating gas in the furnace, which may cause residual oxygen, and thus cause oxidation of the nanocrystalline master alloy thin strip, thereby reducing the heat treatment effect of the nanocrystalline master alloy thin strip. At the same time, when the support table supports the nanocrystalline master alloy thin strip, the hot gas flow effect between the nanocrystalline master alloy thin strips is poor, which reduces the heat treatment effect of the nanocrystalline master alloy thin strip. SUMMARY

[0004] The purpose of the present application is to solve the problem of the prior art that the flow rate of the four corner positions and the bottom end region of the furnace wall is too low, which leads to uneven distribution of the circulating gas in the furnace, and the hot gas flow effect between the nanocrystalline master alloy thin strips is poor, which reduces the heat treatment effect of the nanocrystalline master alloy thin strip. A nanocrystalline master alloy heat treatment equipment is provided.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0006] Design a heat treatment device for nanocrystalline master alloys, including a heat treatment furnace. Electric heaters are connected to both sides of the interior of the heat treatment furnace. A support platform is connected to the bottom of the interior of the heat treatment furnace. A dispersion box is fixedly connected to the bottom of the heat treatment furnace, and the bottom of the dispersion box is connected to a second connecting pipe. A hollow frame is connected to the bottom of the interior of the heat treatment furnace. Second conduits are connected to the four corners of the bottom of the hollow frame. One end of each second conduit extends outside the heat treatment furnace and connects to the dispersion box. Fixed pipes are connected to the four corners of the upper end of the hollow frame. Spiral guide vanes are connected inside each fixed pipe. A first chamber is formed inside the support platform. Several micropores are formed at the upper end of the first chamber. The upper end of the dispersion box is connected to the first chamber through a third conduit.

[0007] Preferably, the upper end of the hollow frame is connected to a plurality of first gas outlets that are inclined toward the support platform, and the upper end of the hollow frame is connected to a plurality of second gas outlets that are inclined toward the inner wall of the heat treatment furnace, with the plurality of second gas outlets and the plurality of first gas outlets being alternately arranged.

[0008] Preferably, the second connecting pipe is connected to the first connecting pipe by an anti-pollution mechanism. The anti-pollution mechanism includes a shell, which is connected to a heat treatment furnace. The upper end of the shell is connected to the first connecting pipe, and the bottom end of one side of the shell is connected to the second connecting pipe. Several electrode plates for dust removal are connected inside the shell, and a slag discharge port is opened at the bottom end of the shell. A collection bottle is connected to the slag discharge port.

[0009] Preferably, a perforated baffle is fixedly connected inside the housing, and a first filter screen is fixedly connected inside the housing, the first filter screen being located between the perforated baffle and the electrode plate.

[0010] Preferably, the upper end of the housing is connected to a separation mechanism for enhancing dust collection efficiency. The separation mechanism includes a magnetically coupled linear motor, which is fixedly connected to the housing. The output end of the magnetically coupled linear motor extends into the housing and is fixedly connected to a movable frame. Several scrapers are evenly spaced along the length direction on the movable frame, and the scrapers are in contact with corresponding electrode plates.

[0011] Preferably, a second fan is fixedly connected to the upper end of the housing, and the outlet end of the second fan is connected to a third connecting pipe. A second chamber is opened inside the movable frame, and the upper end of the second chamber is connected to a movable pipe. One end of the movable pipe extends to the outside of the housing and is sealed and inserted into the third connecting pipe. A third chamber is opened inside each scraper, and each third chamber is connected to the second chamber. A plurality of through holes are evenly spaced along the length direction at the upper end of each scraper, and one end of each through hole is connected to the corresponding third chamber.

[0012] Preferably, the outlet end of the second fan is connected to a fourth connecting pipe, one end of the fourth connecting pipe is connected to a cylinder, a plurality of second filter screens are connected at equal intervals along the length direction inside the cylinder, the bottom end of the cylinder is connected to a fifth connecting pipe, and one end of the fifth connecting pipe is connected to the bottom end of one side of the housing.

[0013] The heat treatment equipment for nanocrystalline master alloys proposed in this invention has the following advantages:

[0014] By guiding the gas inside the fixed tube through the spiral guide vanes, the gas released from the upper end of the fixed tube forms a vortex flow. The vortex flow drives the gas at the four corners of the heat treatment furnace to move upward, thereby avoiding the gas flow velocity being too slow in the four corners and the bottom of the furnace wall, eliminating the formation of low-speed zones. At the same time, the gas released from the micropores impacts the nanocrystalline master alloy strips, preventing them from contacting each other and improving the gas circulation effect between the nanocrystalline master alloy strips on the support platform, thus improving the heat treatment effect on the nanocrystalline master alloy strips. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a heat treatment device for nanocrystalline master alloys proposed in this invention. Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the structure of a heat treatment device for nanocrystalline master alloys proposed in this invention. Figure 2 ;

[0017] Figure 3 This is a schematic diagram of the connection between the heat treatment furnace and the support platform in a heat treatment equipment for nanocrystalline master alloys proposed in this invention.

[0018] Figure 4 This is a schematic diagram of the connection between the dispersion box and the second connecting pipe in a heat treatment device for nanocrystalline master alloys proposed in this invention;

[0019] Figure 5 This is a schematic diagram of the connection between the first connecting pipe and the anti-pollution mechanism in a heat treatment device for nanocrystalline master alloys proposed in this invention;

[0020] Figure 6 This is a schematic diagram of the connection between the second connecting pipe and the anti-pollution mechanism in a nanocrystalline master alloy heat treatment device proposed in this invention;

[0021] Figure 7 This is a schematic diagram of the connection between the anti-pollution mechanism and the separation mechanism in a heat treatment device for nanocrystalline master alloys proposed in this invention;

[0022] Figure 8This is a schematic diagram of the connection between the shell and the separation mechanism in a heat treatment device for nanocrystalline master alloys proposed in this invention.

[0023] In the diagram: 1. Heat treatment furnace; 2. Sealed door; 3. Inlet pipe; 4. Exhaust pipe; 5. Electric heater; 6. Support platform; 7. First fan; 8. First connecting pipe; 9. Dispersion box; 10. Second connecting pipe; 11. Hollow frame; 12. First outlet; 13. Second outlet; 14. Fixed pipe; 15. Spiral guide vane; 16. First chamber; 17. Micropores; 18. Suction hopper; 19. Anti-pollution mechanism; 20. Separation mechanism; 191. Shell; 192. Electrode plate; 193. Slag discharge port; 194. Collection bottle; 195. First filter screen; 196. Perforated baffle; 201. Magnetic coupling linear motor; 202. Movable frame; 203. Scraper; 204. Second fan; 205. Third connecting pipe; 206. Movable pipe; 207. Through hole; 208. Fourth connecting pipe; 209. Cylinder; 2010. Second filter screen; 2011. Fifth connecting pipe. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] Example 1: Refer to Figures 1-4A heat treatment device for nanocrystalline master alloys includes a heat treatment furnace 1, a sealing door 2 rotatably connected to the heat treatment furnace 1, an air inlet pipe 3 connected to one side of the heat treatment furnace 1, an exhaust pipe 4 connected to one side of the heat treatment furnace 1, electric heaters 5 connected to both sides of the interior of the heat treatment furnace 1, a support platform 6 connected to the bottom of the interior of the heat treatment furnace 1, a first fan 7 fixedly connected to the upper end of the heat treatment furnace 1, the inlet end of the first fan 7 extending into the heat treatment furnace 1 through a first conduit and connected to an air suction hopper 18, the outlet end of the first fan 7 connected to a first connecting pipe 8, one end of the first connecting pipe 8 connected to a second connecting pipe 10, a dispersion box 9 fixedly connected to the bottom of the heat treatment furnace 1, the bottom end of the dispersion box 9 connected to the second connecting pipe 10, and a middle... The hollow frame 11 has several first air outlets 12 that are inclined toward the support platform 6 at its upper end. The hollow frame 11 also has several second air outlets 13 that are inclined toward the inner wall of the heat treatment furnace 1 at its upper end. The second air outlets 13 and the first air outlets 12 are alternately arranged. The bottom four corners of the hollow frame 11 are connected to second conduits. One end of each second conduit extends to the outside of the heat treatment furnace 1 and connects to the dispersion box 9. The top four corners of the hollow frame 11 are connected to fixed pipes 14. Each fixed pipe 14 is connected to a spiral guide vane 15. The support platform 6 has a first chamber 16. The upper end of the first chamber 16 has several micropores 17. The upper end of the dispersion box 9 is connected to the first chamber 16 through a third conduit.

[0026] Working principle:

[0027] Rotate the sealing door 2 to open the heat treatment furnace 1, place the nanocrystalline master alloy strip on the support platform 6, and then rotate the sealing door 2 to seal the heat treatment furnace 1. The air extraction mechanism extracts the air from the heat treatment furnace 1 through the air extraction pipe 4, so that the heat treatment furnace 1 forms a vacuum state. Inert gas is introduced into the heat treatment furnace 1 through the air inlet pipe 3. After the electric heater 5 is started, the interior of the heat treatment furnace 1 is heated and the temperature is raised. After the internal temperature is raised, the nanocrystalline master alloy strip on the support platform 6 is heat treated.

[0028] At the same time, after the first fan 7 starts, it draws gas from the heat treatment furnace 1 through the suction hopper 18. The gas drawn in passes through the first connecting pipe 8 and the second connecting pipe 10 in sequence and enters the dispersion box 9. The gas in the dispersion box 9 is introduced into the hollow frame 11 through different second conduits. The gas in the hollow frame 11 is released from the first gas outlet 12, the second gas outlet 13, and the fixed pipe 14. The released gas flows upward and finally re-enters the circulation through the suction hopper 18. The gas circulates in the heat treatment furnace 1.

[0029] A portion of the gas inside the hollow frame 11 is released from several first gas outlets 12 inclined toward the support platform 6. The gas released from the first gas outlets 12 pushes the gas in the middle area of ​​the heat treatment furnace 1 upward. A portion of the gas inside the hollow frame 11 is released from several second gas outlets 13 inclined toward the inner wall of the heat treatment furnace 1. The gas released from the second gas outlets 13 pushes the gas at the inner wall of the heat treatment furnace 1 upward. A portion of the gas inside the hollow frame 11 is released from several fixed pipes 14. The gas in the fixed pipes 14 is guided by the spiral guide vanes 15, so that the gas released from the upper end of the fixed pipes 14 forms a vortex flow. The vortex flow drives the gas at the four corners of the heat treatment furnace 1 upward, thereby avoiding the gas flow speed at the four corners and the bottom of the furnace wall of the heat treatment furnace 1 being too slow, eliminating the formation of low-speed zones, ensuring uniform gas distribution in the furnace, preventing local oxidation, and improving the heat treatment effect of the nanocrystalline master alloy thin strip.

[0030] Simultaneously, a portion of the gas in the dispersion box 9 is introduced into the first chamber 16 through the third conduit. The gas in the first chamber 16 is released from different micropores 17. The gas released from the micropores 17 impacts the nanocrystalline master alloy strip, and the released gas pushes the nanocrystalline master alloy strip, forming an isolation gas film between the nanocrystalline master alloy strip and the support platform 6, preventing the nanocrystalline master alloy strips from contacting each other. After the gas is released from the micropores 17, it drives the gas between the nanocrystalline master alloy strips on the support platform 6 to flow upward, improving the circulation effect of the gas between the nanocrystalline master alloy strips on the support platform 6, thereby improving the heat treatment effect of the nanocrystalline master alloy strip.

[0031] Example 2: Gas in the dispersion box 9 is introduced into the hollow frame 11 through different second conduits. Gas in the hollow frame 11 is released from the first gas outlet 12, the second gas outlet 13, and the fixed pipe 14. The released gas moves upward and enters the suction hopper 18. The gas circulates in the heat treatment furnace 1. Metal vapor and dust in the circulating gas gradually accumulate. The dust contaminates the surface of the nanocrystalline master alloy thin strip, thereby reducing the quality of the nanocrystalline master alloy thin strip after heat treatment. (Refer to...) Figures 5-6 As another preferred embodiment of the present invention, the difference from embodiment 1 is that an anti-pollution mechanism 19 is connected between the second connecting pipe 10 and the first connecting pipe 8. The anti-pollution mechanism 19 includes a housing 191, which is connected to the heat treatment furnace 1. The upper end of the housing 191 is connected to the first connecting pipe 8, and the bottom end of one side of the housing 191 is connected to the second connecting pipe 10. Several electrode plates 192 for dust removal are connected inside the housing 191. A slag discharge port 193 is opened at the bottom end of the housing 191, and a collection bottle 194 is connected to the slag discharge port 193. A perforated baffle 196 is fixedly connected inside the housing 191, and a first filter screen 195 is fixedly connected inside the housing 191. The first filter screen 195 is located between the perforated baffle 196 and the electrode plates 192.

[0032] Working principle:

[0033] The gas in the first connecting pipe 8 is introduced into the upper part of the interior of the housing 191. The gas in the upper part of the interior of the housing 191 passes through the perforated baffle 196, which disperses the gas. The dispersed gas comes into contact with the first filter screen 195, which performs preliminary filtration of the gas. Then the gas passes through the electrode plate 192. After the electrode plate 192 is energized, it performs electrostatic dust removal. The perforated baffle 196 disperses the gas, thereby improving the electrostatic dust removal effect of the electrode plate 192 on the gas.

[0034] After electrostatic dust removal, the gas is introduced into the second connecting pipe 10. Part of the dust absorbed by the electrode plate 192 adheres to the electrode plate 192, while the other part falls into the bottom of the housing 191. The dust enters the collection bottle 194 through the slag discharge port 193. The dust in the circulating gas is removed by the first filter screen 195 and the electrode plate 192 in turn, thereby preventing the dust from sticking to the surface of the nanocrystalline master alloy thin strip and thus preventing pollution of the nanocrystalline master alloy thin strip, thereby improving the heat treatment effect of the nanocrystalline master alloy thin strip.

[0035] Example 3: When electrode plate 192 is energized for electrostatic dust removal, metal vapor in the circulating gas condenses and deposits on its discharge electrode, forming an insulating layer. This insulating layer inhibits corona discharge, thereby reducing the dust removal efficiency of electrode plate 192. (Refer to...) Figures 7-8As another preferred embodiment of the present invention, the difference from embodiment 2 is that a separation mechanism 20 for enhancing dust collection efficiency is connected to the upper end of the housing 191. The separation mechanism 20 includes a magnetically coupled linear motor 201, which is fixedly connected to the housing 191. The output end of the magnetically coupled linear motor 201 extends into the housing 191 and is fixedly connected to a movable frame 202. A plurality of scrapers 203 are evenly spaced along the length direction on the movable frame 202, and the scrapers 203 contact the corresponding electrode plates 192. A second fan 204 is fixedly connected to the upper end of the housing 191. The outlet end of the second fan 204 is connected to a third connecting pipe 205. A second chamber is opened inside the movable frame 202. The upper end is connected to a movable pipe 206, one end of which extends to the outside of the housing 191 and is sealed and inserted into a third connecting pipe 205. Each scraper 203 has a third chamber, and each third chamber is connected to a second chamber. The upper end of each scraper 203 has several through holes 207 evenly spaced along the length direction. One end of each through hole 207 is connected to the corresponding third chamber. The outlet end of the second fan 204 is connected to a fourth connecting pipe 208. One end of the fourth connecting pipe 208 is connected to a cylinder 209. Several second filter screens 2010 are evenly spaced along the length direction inside the cylinder 209. The bottom end of the cylinder 209 is connected to a fifth connecting pipe 2011, and one end of the fifth connecting pipe 2011 is connected to the bottom end of one side of the housing 191.

[0036] Work process:

[0037] During the gas circulation process, after the magnetic coupling linear motor 201 is started, it drives the movable frame 202 to move back and forth in the vertical direction. The movable frame 202 drives several scrapers 203 to move. The scrapers 203 scrape and clean the discharge electrodes of the electrode plate 192, keeping the surface of the discharge electrodes of the electrode plate 192 clean and preventing dust from accumulating and forming an insulating layer, so as not to affect the electrostatic dust removal effect of the electrode plate 192.

[0038] Simultaneously, the second fan 204 is powered on and starts. The second fan 204 draws gas from the movable pipe 206 through the third connecting pipe 205. The movable pipe 206 draws gas from the second chamber, and the second chamber draws gas from the third chamber. Several through holes 207 connect to the third chamber, thereby generating suction on the through holes 207. The suction draws in the particles scraped off by the scraper 203. The particles pass through the through holes 207, the third chamber, the second chamber, the movable pipe 206, and the third connecting pipe 205 in sequence and enter the second fan 204. The second fan 204 guides the drawn particulate gas through the fourth connecting pipe 208. Inside the cylinder 209, several second filters 2010 filter the particles in the gas. The filtered gas is then reintroduced into the housing 191 through the fifth connecting pipe 2011. When the scraper 203 cleans the discharge electrodes of the electrode plate 192, several through holes 207 adsorb and collect the particles scraped off by the scraper 203, preventing the scraped particles from entering the heat treatment furnace 1 with the circulating gas. This improves the electrostatic dust removal effect of the electrode plate 192. Furthermore, the second filters 2010 filter the particles in the gas, and the filtered gas is reintroduced into the housing 191, preventing heat waste.

[0039] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A nanocrystalline master alloy heat treatment device, comprising a heat treatment furnace (1), both sides of the interior of the heat treatment furnace (1) are connected with an electric heater (5), the bottom end of the interior of the heat treatment furnace (1) is connected with a support table (6), characterized in that, Wherein: The bottom end of the heat treatment furnace (1) is fixedly connected with a dispersion box (9), the bottom end of the dispersion box (9) is communicated with a second connecting pipe (10), the inside bottom end of the heat treatment furnace (1) is connected with a hollow frame (11), the bottom end of the hollow frame (11) is communicated with a second conduit at each of the four corner positions, one end of each of the second conduits extends to the outside of the heat treatment furnace (1) and is communicated with the dispersion box (9), the upper end of the hollow frame (11) is communicated with a fixed pipe (14) at each of the four corner positions, a spiral guide vane (15) is connected in each of the fixed pipes (14), a first cavity (16) is formed in the support table (6), a plurality of micropores (17) are formed in the upper end of the first cavity (16), and the upper end of the dispersion box (9) is communicated with the first cavity (16) through a third conduit.

2. The nanocrystalline master alloy heat treatment apparatus of claim 1, wherein, The upper end of the hollow frame (11) is communicated with a plurality of first gas outlet heads (12) which are arranged obliquely towards the support table (6), and the upper end of the hollow frame (11) is communicated with a plurality of second gas outlet heads (13) which are arranged obliquely towards the inner wall of the heat treatment furnace (1), and the plurality of second gas outlet heads (13) and the plurality of first gas outlet heads (12) are arranged alternately.

3. The nanocrystalline master alloy heat treatment apparatus of claim 1, wherein, The second connecting pipe (10) and the first connecting pipe (8) are communicated with an anti-pollution mechanism (19), the anti-pollution mechanism (19) comprises a shell (191), the shell (191) is connected with the heat treatment furnace (1), the upper end of the shell (191) is communicated with the first connecting pipe (8), the bottom end of one side of the shell (191) is communicated with the second connecting pipe (10), a plurality of electrode plates (192) for dust removal are connected in the shell (191), a slag discharge port (193) is formed in the bottom end of the shell (191), and a collection bottle (194) is connected to the slag discharge port (193).

4. The nanocrystalline master alloy heat treatment apparatus of claim 3, wherein, A perforated baffle (196) is fixedly connected in the shell (191), and a first filter screen (195) is fixedly connected in the shell (191) and located between the perforated baffle (196) and the electrode plates (192).

5. The nanocrystalline master alloy heat treatment apparatus of claim 4, wherein, The upper end of the shell (191) is connected with a separation mechanism (20) for enhancing the dust capture efficiency, the separation mechanism (20) comprises a magnetic coupling linear motor (201), the magnetic coupling linear motor (201) is fixedly connected to the shell (191), the output end of the magnetic coupling linear motor (201) extends into the shell (191) and is fixedly connected with a movable frame (202), a plurality of scrapers (203) are connected at equal intervals along the length direction of the movable frame (202), and the plurality of scrapers (203) are in contact with the corresponding electrode plates (192).

6. The nanocrystalline master alloy heat treatment apparatus of claim 5, wherein, The upper end of the shell (191) is fixedly connected with a second fan (204), the outlet end of the second fan (204) is communicated with a third connecting pipe (205), the movable frame (202) is provided with a second chamber, the upper end of the second chamber is communicated with a movable pipe (206), one end of the movable pipe (206) extends out of the shell (191) and is sealingly connected with the third connecting pipe (205), each scraper (203) is provided with a third chamber, each third chamber is communicated with the second chamber, the upper end of each scraper (203) is provided with a plurality of through holes (207) at equal intervals along the length direction, and one end of each through hole (207) is communicated with the corresponding third chamber.

7. The nanocrystalline master alloy heat treatment apparatus of claim 6, wherein, The outlet end of the second fan (204) is communicated with a fourth connecting pipe (208), one end of the fourth connecting pipe (208) is communicated with a cylinder (209), a plurality of second filter screens (2010) are connected at equal intervals along the length direction in the cylinder (209), the bottom end of the cylinder (209) is communicated with a fifth connecting pipe (2011), and one end of the fifth connecting pipe (2011) is communicated with one side bottom end of the shell (191).

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