Heat treatment equipment for nanocrystalline master alloy

Abstract

The invention relates to the technical field of heat treatment, in particular to nanocrystalline master alloy heat treatment equipment which is characterized in that a hollow frame is connected to the bottom end of the interior of a heat treatment furnace, second guide pipes communicate with the four corners of the bottom end of the hollow frame, a spiral flow guide blade is connected into each fixed pipe, and a first cavity is formed in a supporting table; and a plurality of micropores are formed in the upper end of the first chamber. Gas in the fixed pipe is guided by the spiral flow guide blades, so that the gas released from the upper end of the fixed pipe becomes vortex flow, and the formed vortex flow drives the gas at four corners in the heat treatment furnace to move upwards, so that the situation that the gas at the four corners in the heat treatment furnace and the bottom end area of the furnace wall flows too slow is avoided; and the formation of a low-speed area is eliminated, meanwhile, gas released from the micropores carries out gas impact on the nanocrystalline master alloy thin strips, and the circular flow effect of gas between the nanocrystalline master alloy thin strips on the supporting table is improved, so that 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] The utility model designs a kind of nanocrystalline master alloy heat treatment equipment, including heat treatment furnace, the inside both sides of heat treatment furnace are connected with electric heater, the inside bottom end of heat treatment furnace is connected with support table, the bottom end of heat treatment furnace is fixedly connected with dispersion box, the bottom end of dispersion box is communicated second connecting pipe, the inside bottom end of heat treatment furnace is connected with hollow frame, the bottom end of hollow frame is communicated with second conduit in four corner positions, one end of each second conduit extends to heat treatment furnace outside and is communicated with dispersion box, the upper end of hollow frame is communicated with fixed pipe in four corner positions, spiral guide vane is connected in each fixed pipe, first cavity is opened in support table, a plurality of micropores are opened in the upper end of first cavity, the upper end of dispersion box is communicated with first cavity by third conduit.

[0007] Preferably, the upper end of the hollow frame is communicated with a plurality of first gas outlets inclined towards the support table, and the upper end of the hollow frame is communicated with a plurality of second gas outlets inclined towards the inner wall of the heat treatment furnace, and the plurality of second gas outlets are alternately arranged with the plurality of first gas outlets.

[0008] Preferably, the second connecting pipe is communicated with the first connecting pipe through a pollution prevention mechanism, the pollution prevention mechanism includes a shell connected to the heat treatment furnace, the upper end of the shell is communicated with the first connecting pipe, the bottom end of one side of the shell is communicated with the second connecting pipe, a plurality of electrode plates for dust removal are connected in the shell, a slag discharge port is opened in the bottom end of the shell, and a collection bottle is connected to the slag discharge port.

[0009] Preferably, a perforated baffle is fixedly connected in the shell, and a first filter screen is fixedly connected in the shell, and the first filter screen is located between the perforated baffle and the electrode plates.

[0010] Preferably, a separation mechanism for enhancing dust capture efficiency is connected to the upper end of the shell, the separation mechanism includes a magnetic coupling linear motor, the magnetic coupling linear motor is fixedly connected to the shell, the output end of the magnetic coupling linear motor extends into the shell and is fixedly connected with a movable frame, a plurality of scrapers are equidistantly connected along the length direction on the movable frame, and the plurality of scrapers are in contact with the corresponding electrode plates.

[0011] Preferably, a second fan is fixedly connected to the upper end of the shell, the outlet end of the second fan is communicated with a third connecting pipe, a second cavity is opened in the movable frame, the upper end of the second cavity is communicated with a movable pipe, one end of the movable pipe extends out of the shell and is sealingly inserted into the third connecting pipe, a third cavity is opened in each scraper, each third cavity is communicated with the second cavity, and a plurality of through holes are equidistantly opened in the upper end of each scraper along the length direction, and one end of each through hole is communicated with the corresponding third cavity.

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

[0013] The nanocrystalline master alloy heat treatment equipment has the beneficial effects that:

[0014] The gas in the fixed pipe is guided by the spiral 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 upward, thereby avoiding the slow flow speed of the gas at the four corner positions and the bottom end of the furnace wall in the heat treatment furnace, eliminating the formation of a low-speed area, and the gas released from the micropores performs air flushing on the nanocrystalline master alloy thin strips, avoids mutual contact between the nanocrystalline master alloy thin strips, improves the circulating flow effect of the gas between the nanocrystalline master alloy thin strips on the support table, and thereby improves the heat treatment effect on the nanocrystalline master alloy thin strips. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The structure of the nanocrystalline master alloy heat treatment equipment is shown in the figure Figure 1 ;

[0016] Figure 2 The structure of the nanocrystalline master alloy heat treatment equipment is shown in the figure Figure 2 ;

[0017] Figure 3 The structure of the nanocrystalline master alloy heat treatment equipment is shown in the figure

[0018] Figure 4 The structure of the nanocrystalline master alloy heat treatment equipment is shown in the figure

[0019] Figure 5 The structure of the nanocrystalline master alloy heat treatment equipment is shown in the figure

[0020] Figure 6 The structure of the nanocrystalline master alloy heat treatment equipment is shown in the figure

[0021] Figure 7 The structure of the nanocrystalline master alloy heat treatment equipment is shown in the figure

[0022] Figure 8A structure diagram of connection between a shell and a separation mechanism in a nanocrystalline master alloy heat treatment equipment is provided.

[0023] In the figure: 1, heat treatment furnace; 2, sealing door; 3, air inlet pipe; 4, air outlet pipe; 5, electric heater; 6, support table; 7, first fan; 8, first connecting pipe; 9, dispersion box; 10, second connecting pipe; 11, hollow frame; 12, first air outlet head; 13, second air outlet head; 14, fixed pipe; 15, spiral guide vane; 16, first cavity; 17, micropore; 18, air 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 DESCRIPTION

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

[0025] Embodiment 1: Reference Figures 1-4The utility model relates to a kind of nanocrystalline master alloy heat treatment equipment, including heat treatment furnace 1, sealing door 2 is rotatably connected on heat treatment furnace 1, the side of heat treatment furnace 1 is communicated with air inlet pipe 3, the side of heat treatment furnace 1 is communicated with air outlet pipe 4, the inside both sides of heat treatment furnace 1 are connected with electric heater 5, the inside bottom end of heat treatment furnace 1 is connected with support table 6, the upper end of heat treatment furnace 1 is fixedly connected with first fan 7, the inlet end of first fan 7 extends to heat treatment furnace 1 by first conduit, and is communicated with suction hopper 18, the outlet end of first fan 7 is communicated with first connecting pipe 8, one end of first connecting pipe 8 is communicated with second connecting pipe 10, the bottom end of heat treatment furnace 1 is fixedly connected with dispersion box 9, the bottom end of dispersion box 9 is communicated with second connecting pipe 10, the inside bottom end of heat treatment furnace 1 is connected with hollow frame 11, the upper end of hollow frame 11 is communicated with a plurality of first gas outlet head 12, which are arranged obliquely towards support table 6, the upper end of hollow frame 11 is communicated with a plurality of second gas outlet head 13, which are arranged obliquely towards the inner wall of heat treatment furnace 1, a plurality of second gas outlet head 13 and a plurality of first gas outlet head 12 are arranged alternately, the bottom end of hollow frame 11 is communicated with second conduit at four corner positions, one end of each second conduit extends to outside heat treatment furnace 1, and is communicated with dispersion box 9, the upper end of hollow frame 11 is communicated with fixed tube 14 at four corner positions, and spiral flow guide vane 15 is connected in each fixed tube 14, first cavity 16 is formed in support table 6, a plurality of micropores 17 are formed in the upper end of first cavity 16, and the upper end of dispersion box 9 is communicated with first cavity 16 by third conduit.

[0026] Working principle:

[0027] Rotating sealing door 2 opens heat treatment furnace 1, and nanocrystalline master alloy ribbon is placed on support table 6, and then rotating sealing door 2 seals heat treatment furnace 1, and air in heat treatment furnace 1 is extracted by air extraction mechanism through air outlet pipe 4, so that vacuum state is formed in heat treatment furnace 1, inert gas is introduced into heat treatment furnace 1 through air inlet pipe 3, and heat treatment furnace 1 is heated and warmed up after electric heater 5 is started, and nanocrystalline master alloy ribbon on support table 6 is heat treated after internal warming.

[0028] Meanwhile, first fan 7 is started to suck gas in heat treatment furnace 1 through suction hopper 18, and the sucked gas passes through first connecting pipe 8, second connecting pipe 10 into dispersion box 9 in sequence, gas in dispersion box 9 is introduced into hollow frame 11 from different second conduits, and gas in hollow frame 11 is released from first gas outlet head 12, second gas outlet head 13 and fixed tube 14, and the released gas flows upward, and finally reenters circulation through suction hopper 18, and gas circulates in heat treatment furnace 1.

[0029] The gas in the hollow frame 11 is released from the first gas outlet head 12 which is inclined to the support table 6, and the gas released from the first gas outlet head 12 pushes the gas in the middle region of the heat treatment furnace 1 to move upward. The gas in the hollow frame 11 is released from the second gas outlet head 13 which is inclined to the inner wall of the heat treatment furnace 1, and the gas released from the second gas outlet head 13 pushes the gas at the inner wall of the heat treatment furnace 1 to move upward. The gas in the hollow frame 11 is released from the fixed pipe 14, and the gas in the fixed pipe 14 is guided by the spiral flow guide blade 15, so that the gas released from the upper end of the fixed pipe 14 forms a vortex flow. The vortex flow drives the gas at the four corners of the heat treatment furnace 1 to move upward, thereby avoiding the slow flow of the gas at the four corners of the heat treatment furnace 1 and the bottom end of the furnace wall, eliminating the formation of low-speed zones, ensuring uniform distribution of the gas in the furnace, preventing local oxidation, and improving the heat treatment effect of the nanocrystalline master alloy thin strip.

[0030] Meanwhile, a part 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 the different micro-holes 17, the gas released from the micro-holes 17 performs air flushing on the nanocrystalline master alloy thin strip, and the released gas pushes the nanocrystalline master alloy thin strip to form an isolation gas film between the nanocrystalline master alloy thin strip and the support table 6, thereby avoiding the mutual contact between the nanocrystalline master alloy thin strips. After the gas is released from the micro-holes 17, the gas between the nanocrystalline master alloy thin strips on the support table 6 flows upward, improving the circulating flow effect of the gas between the nanocrystalline master alloy thin strips on the support table 6, and thereby improving the heat treatment effect on the nanocrystalline master alloy thin strip.

[0031] In the embodiment 2, 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 head 12, the second gas outlet head 13, and the fixed pipe 14, and the released gas moves upward and then enters the gas suction hopper 18. The gas circulates in the heat treatment furnace 1, and the metal vapor and dust in the circulating gas gradually accumulate, thereby polluting the surface of the nanocrystalline master alloy thin strip and reducing the quality of the nanocrystalline master alloy thin strip after heat treatment. Referring to Figures 5-6 As another preferred embodiment of the present application, the difference between the embodiment 1 and the embodiment 2 is that the anti-pollution mechanism 19 is communicated between the second connecting pipe 10 and the first connecting pipe 8. The anti-pollution mechanism 19 comprises a shell 191 which is connected to the heat treatment furnace 1, the upper end of the shell 191 is communicated with the first connecting pipe 8, one side of the bottom end 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 arranged at the bottom end of the shell 191, a collection bottle 194 is connected to the slag discharge port 193, 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.

[0032] Working principle:

[0033] The gas in the first connecting pipe 8 is introduced into the upper end of the inner part of the shell 191, and the gas at the upper end of the inner part of the shell 191 passes through the perforated baffle 196, which disperses the gas. The dispersed gas contacts the first filter screen 195, which preliminarily filters the gas. Subsequently, the gas passes through the electrode plate 192, which performs electrostatic dust removal after being electrified. The perforated baffle 196 disperses the gas, thereby improving the electrostatic dust removal effect of the electrode plate 192 on the gas.

[0034] The gas after electrostatic dust removal is introduced into the second connecting pipe 10. The dust absorbed by the electrode plate 192 is partially attached to the electrode plate 192 and the other part falls into the bottom end of the shell 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 sequence, thereby avoiding the adhesion of the dust to the surface of the nanocrystalline master alloy thin strip and further avoiding the pollution of the nanocrystalline master alloy thin strip, and improving the heat treatment effect of the nanocrystalline master alloy thin strip.

[0035] In example 3, when the electrode plate 192 is electrified to perform electrostatic dust removal, the metal vapor in the circulating gas is condensed and deposited on the discharge electrode to form an insulating layer. The insulating layer inhibits corona discharge, thereby reducing the dust removal efficiency of the electrode plate 192. Figures 7-8As another preferred embodiment of the present application, the difference from the embodiment 2 is that 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 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 to the movable frame 202 at equal intervals along the length direction, the plurality of scrapers 203 are in contact with the corresponding electrode plates 192, 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, a second cavity is formed in the movable frame 202, the upper end of the second cavity is communicated with a movable pipe 206, one end of the movable pipe 206 extends out of the shell 191 and is sealingly inserted into the third connecting pipe 205, a third cavity is formed in each of the scrapers 203, each of the third cavities is communicated with the second cavity, a plurality of through holes 207 are formed in the upper end of each of the scrapers 203 at equal intervals along the length direction, one end of each of the through holes 207 is communicated with the corresponding third cavity, 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 to the cylinder 209 at equal intervals along the length direction, the bottom end of the cylinder 209 is communicated with a fifth connecting pipe 2011, one end of the fifth connecting pipe 2011 is communicated to the bottom end of one side of the shell 191.

[0036] Working process:

[0037] During the gas circulation flow process, the magnetic coupling linear motor 201 is started to drive the movable frame 202 to move reciprocally in the vertical direction, the movable frame 202 drives the plurality of scrapers 203 to move, the scrapers 203 clean the discharge electrodes of the electrode plates 192, keep the surface of the discharge electrodes of the electrode plates 192 clean, avoid the dust accumulation to form an insulating layer, so as not to affect the electrostatic dust removal effect of the electrode plates 192;

[0038] Meanwhile, the second fan 204 is powered on and starts, the second fan 204 sucks the gas in the movable pipe 206 through the third connecting pipe 205, the movable pipe 206 sucks the gas in the second chamber, the second chamber sucks the gas in the third chamber, and the plurality of through holes 207 are communicated with the third chamber, so that the suction force is generated on the through holes 207, the generated suction force sucks the particles scraped by the scraper 203, and 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 sucked particle gas into the cylinder 209 through the fourth connecting pipe 208, the plurality of second filter screens 2010 filter the particles in the gas, and the filtered gas is guided into the shell 191 again through the fifth connecting pipe 2011, when the scraper 203 scrapes the discharge electrode of the electrode plate 192, the plurality of through holes 207 adsorb and collect the particles scraped by the scraper 203, so that the particles scraped by the scraper 203 do not enter the heat treatment furnace 1 along with the circulating gas, the electrostatic dust removal effect of the electrode plate 192 is improved, and the particles in the gas are filtered by the second filter screen 2010, so that the filtered gas is guided into the shell 191 again, and heat waste is avoided.

[0039] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A heat treatment device for nanocrystalline master alloys, comprising a heat treatment furnace (1), wherein electric heaters (5) are connected to both sides of the interior of the heat treatment furnace (1), and a support platform (6) is connected to the bottom of the interior of the heat treatment furnace (1), characterized in that, in: The bottom end of the heat treatment furnace (1) is fixedly connected to a dispersion box (9), the bottom end of the dispersion box (9) is connected to a second connecting pipe (10), the bottom end of the heat treatment furnace (1) is connected to a hollow frame (11), the bottom four corners of the hollow frame (11) are connected to a second conduit, 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 a fixed pipe (14), each fixed pipe (14) is connected to a spiral guide vane (15), the support platform (6) is provided with a first chamber (16), the top end of the first chamber (16) is provided with several micro holes (17), the top end of the dispersion box (9) is connected to the first chamber (16) through a third conduit.

2. The heat treatment equipment for nanocrystalline master alloys according to claim 1, characterized in that, The upper end of the hollow frame (11) is connected to a number of first gas outlets (12) that are inclined toward the support platform (6), and the upper end of the hollow frame (11) is connected to a number of second gas outlets (13) that are inclined toward the inner wall of the heat treatment furnace (1). The number of second gas outlets (13) and the number of first gas outlets (12) are alternately arranged.

3. The heat treatment equipment for nanocrystalline master alloys according to claim 1, characterized in that, A pollution prevention mechanism (19) is connected between the second connecting pipe (10) and the first connecting pipe (8). The pollution prevention mechanism (19) includes a shell (191), which is connected to the heat treatment furnace (1). The upper end of the shell (191) is connected to the first connecting pipe (8), and the bottom end of one side of the shell (191) is connected to the second connecting pipe (10). Several electrode plates (192) for dust removal are connected inside the shell (191). A slag discharge port (193) is opened at the bottom end of the shell (191), and a collection bottle (194) is connected to the slag discharge port (193).

4. The heat treatment equipment for nanocrystalline master alloys according to claim 3, characterized in that, 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 plate (192).

5. The heat treatment equipment for nanocrystalline master alloys according to claim 4, characterized in that, The upper end of the housing (191) is connected to a separation mechanism (20) for enhancing dust collection efficiency. 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). Several scrapers (203) are connected at equal intervals along the length direction on the movable frame (202), and several scrapers (203) are in contact with corresponding electrode plates (192).

6. The heat treatment equipment for nanocrystalline master alloys according to claim 5, characterized in that, The upper end of the housing (191) is fixedly connected to a second fan (204), and the outlet end of the second fan (204) is connected to a third connecting pipe (205). The movable frame (202) has a second chamber, and the upper end of the second chamber is connected to a movable pipe (206). One end of the movable pipe (206) extends to the outside of the housing (191) and is sealed and inserted into the third connecting pipe (205). Each scraper (203) has a third chamber, and each third chamber is connected to the second chamber. The upper end of each scraper (203) has several through holes (207) evenly spaced along the length direction, and one end of each through hole (207) is connected to the corresponding third chamber.

7. The heat treatment equipment for nanocrystalline master alloys according to claim 6, characterized in that, 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), a plurality of second filter screens (2010) are connected at equal intervals 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).

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