CN112008088A - Gas atomization powder making control method and device and gas atomization powder making system - Google Patents
Gas atomization powder making control method and device and gas atomization powder making system Download PDFInfo
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- CN112008088A CN112008088A CN201910466849.0A CN201910466849A CN112008088A CN 112008088 A CN112008088 A CN 112008088A CN 201910466849 A CN201910466849 A CN 201910466849A CN 112008088 A CN112008088 A CN 112008088A
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- 239000000843 powder Substances 0.000 title claims abstract description 83
- 238000009689 gas atomisation Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000003723 Smelting Methods 0.000 claims abstract description 68
- 239000007788 liquid Substances 0.000 claims abstract description 43
- 238000002844 melting Methods 0.000 claims description 25
- 230000008018 melting Effects 0.000 claims description 25
- 238000010298 pulverizing process Methods 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000000155 melt Substances 0.000 claims description 4
- 238000000889 atomisation Methods 0.000 claims description 3
- 238000000195 production control method Methods 0.000 claims 3
- 238000002360 preparation method Methods 0.000 abstract description 40
- 230000001276 controlling effect Effects 0.000 description 7
- 230000033228 biological regulation Effects 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000013077 target material Substances 0.000 description 4
- 238000012387 aerosolization Methods 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000001755 magnetron sputter deposition Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/0888—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid casting construction of the melt process, apparatus, intermediate reservoir, e.g. tundish, devices for temperature control
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- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The invention discloses a gas atomization powder preparation control method, a gas atomization powder preparation control device and a gas atomization powder preparation system, wherein the method comprises the following steps: acquiring a pressure difference value between a smelting chamber and an atomizing chamber of gas atomization powder making equipment; if the pressure difference value does not meet the preset pressure difference threshold value, generating a pressure difference adjusting control signal; adjusting the liquid level height of a tundish of the smelting chamber to a preset height according to the pressure difference adjusting control signal; and adjusting the content of the gas in the smelting chamber according to the pressure difference adjusting control signal until the pressure difference value meets a preset pressure difference threshold value. According to the gas atomization powder preparation control method, when the pressure difference value does not meet the preset pressure difference threshold value, the liquid level height of the tundish of the smelting chamber is adjusted to the preset height, the constant flow rate of the molten liquid at the liquid outlet of the flow guide pipe is ensured, then the content of the gas in the smelting chamber is adjusted until the pressure difference value meets the preset pressure difference threshold value, the pressure difference value between the smelting chamber and the atomizing chamber is automatically adjusted, the powder preparation quality in the pressure difference adjusting process is ensured, the powder preparation efficiency is improved, and the powder preparation cost is reduced.
Description
Technical Field
The invention relates to the technical field of target material preparation, in particular to a gas atomization powder preparation control method and device and a gas atomization powder preparation system.
Background
In the conventional thin-film solar cell chip, a functional film layer such as a window layer, an absorption layer and the like is usually formed on a substrate by adopting a magnetron sputtering method, and a target material is a sputtering source in magnetron sputtering. The target material adopted in the preparation of the thin-film solar cell chip generally comprises a back lining pipe and an alloy powder coating coated on the outer peripheral surface of the back lining pipe, the preparation of the alloy powder used by the target material generally comprises three steps of smelting, atomizing and screening, wherein the control of a gas atomization process and related process parameters is crucial during gas atomization powder preparation, particularly the pressure difference between a smelting chamber and an atomizing chamber is directly related to the quality of the powder prepared by gas atomization. The pressure intensity of the smelting chamber is continuously reduced along with the continuous reduction of the molten liquid in the smelting chamber in the gas atomization powder preparation process, so that the pressure difference between the smelting chamber and the atomizing chamber is reduced, the pressure difference is reduced, the molten liquid speed flowing into the atomizing chamber from a flow guide pipe of the smelting chamber is influenced, and the atomization quality is influenced. Currently, workers are required to manually adjust the pressure difference between the smelting chamber and the atomizing chamber to maintain the pressure difference between the two chambers constant, but the adjustment mode causes the powder preparation efficiency to be low.
Disclosure of Invention
In order to solve the technical problems, embodiments of the present invention provide a gas atomization powder making control method, device and gas atomization powder making system, which solve the problem of low powder preparation efficiency caused by manual adjustment of a pressure difference between a melting chamber and an atomization chamber by a worker in the prior art.
In one aspect, an embodiment of the present invention provides a gas atomization powder making control method, applied to gas atomization powder making equipment, including:
acquiring a pressure difference value between a smelting chamber and an atomizing chamber of gas atomization powder making equipment;
if the pressure difference value does not meet a preset pressure difference threshold value, generating a pressure difference adjusting control signal;
adjusting the liquid level height of a tundish of the smelting chamber to a preset height according to the differential pressure adjusting control signal;
and adjusting the content of the gas in the smelting chamber according to the pressure difference adjusting control signal until the pressure difference value meets the preset pressure difference threshold value.
On the other hand, the embodiment of the invention also provides a gas atomization powder preparation control device, which comprises:
the acquisition module is used for acquiring a pressure difference value between a smelting chamber and an atomizing chamber of the gas atomization powder making equipment;
the judgment processing module is used for judging whether the differential pressure value meets a preset differential pressure threshold value or not and generating a differential pressure adjustment control signal when the differential pressure value does not meet the preset differential pressure threshold value;
the first adjusting module is used for adjusting the liquid level height of a tundish of the smelting chamber to a preset height according to the pressure difference adjusting control signal;
and the second adjusting module is used for adjusting the content of the gas in the smelting chamber according to the pressure difference adjusting control signal until the pressure difference value meets the preset pressure difference threshold value.
In another aspect, an embodiment of the present invention further provides an atomized gas pulverizing system, including an atomized gas pulverizing apparatus and the atomized gas pulverizing control device disposed on the atomized gas pulverizing apparatus.
The gas atomization powder making control method of the embodiment of the invention firstly obtains the pressure difference value between the smelting chamber and the atomizing chamber of the gas atomization powder making device, compares the pressure difference value with the preset pressure difference threshold value to determine whether the current pressure difference value meets the preset pressure difference threshold value, generates a pressure difference adjusting signal when the comparison result shows that the pressure difference value does not meet the preset pressure difference threshold value, firstly adjusts the liquid level height of a tundish of the smelting chamber to the preset height to ensure that the flow rate of molten liquid at a liquid outlet of a flow guide pipe is kept constant, and then adjusts the content of gas in the smelting chamber until the pressure difference value meets the preset pressure difference threshold value. The gas atomization powder preparation control method provided by the embodiment of the invention adopts double regulation, realizes automatic regulation of the pressure difference value between the smelting chamber and the atomizing chamber, ensures the powder preparation quality in the pressure difference regulation process, improves the powder preparation efficiency and reduces the powder preparation cost.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a schematic flow diagram of some embodiments of a method of controlling aerosolization milling in accordance with the present disclosure;
FIG. 2 is a schematic flow chart of some embodiments of step S10 of the method for controlling atomized powder according to the present invention;
FIG. 3 is a schematic flow chart of some embodiments of step S30 of the method for controlling atomized powder according to the present invention;
FIG. 4 is a block diagram of some embodiments of the aerosolization milling control apparatus of the present disclosure;
fig. 5 is a schematic structural diagram of some embodiments of the aerosol pulverizing control device of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
Referring to fig. 1, a flow diagram of some embodiments of a method for controlling atomized powder according to an embodiment of the present invention is shown. The method for controlling atomized powder production in this embodiment is applied to the atomized powder production equipment 200, as shown in fig. 5, and includes:
step S10: acquiring a pressure difference value between the smelting chamber 30 and the atomizing chamber 20 of the gas atomization powder making device 200;
it should be noted that, in this step, a pressure detector or a differential pressure gauge may be used to detect a pressure difference value between the melting chamber 30 and the atomizing chamber 20 of the gas atomization powder making apparatus 200, which is not specifically limited herein.
Step S20: if the pressure difference value does not meet the preset pressure difference threshold value, generating a pressure difference adjusting control signal;
in this step, the detected pressure difference value between the melting chamber 30 and the atomizing chamber 20 is compared with a preset pressure difference threshold value, so that whether the current pressure difference is appropriate, that is, whether the process requirement of powder preparation is met can be determined.
It should be noted that, in the embodiment, the preset pressure difference threshold is determined according to the process requirement of preparing the powder by aerosolization, and may be a pressure difference value with a better yield of the prepared powder, which is not specifically limited herein.
Step S30: adjusting the liquid level height of a tundish 33 of the smelting chamber 30 to a preset height according to the pressure difference adjusting control signal;
in this step, when the differential pressure value does not satisfy the preset differential pressure threshold value, the liquid level height of the tundish of the smelting chamber is adjusted to the preset height according to the differential pressure adjusting signal to adjust the liquid outlet pressure of the flow guide pipe 21 below the tundish 33, so that the flow rate of the molten liquid at the liquid outlet is kept constant, and the quality of the prepared powder is not affected.
Step S40: and adjusting the content of the gas in the smelting chamber 30 according to the pressure difference adjusting control signal until the pressure difference value meets a preset pressure difference threshold value.
In the step, the gas content in the smelting chamber 30 can be changed by charging or discharging gas into or from the smelting chamber 30, so that the pressure in the smelting chamber 30 is changed, and finally, the pressure difference value between the smelting chamber 30 and the atomizing chamber 20 is adjusted until the preset pressure difference threshold value is met.
The gas atomization powder making control method of the embodiment of the invention firstly obtains the pressure difference value between the smelting chamber and the atomizing chamber of the gas atomization powder making device, compares the pressure difference value with the preset pressure difference threshold value to determine whether the current pressure difference value meets the preset pressure difference threshold value, generates a pressure difference adjusting signal when the comparison result shows that the pressure difference value does not meet the preset pressure difference threshold value, firstly adjusts the liquid level height of a tundish of the smelting chamber to the preset height to ensure that the flow rate of molten liquid at a liquid outlet of a flow guide pipe is kept constant, and then adjusts the content of gas in the smelting chamber until the pressure difference value meets the preset pressure difference threshold value. The gas atomization powder preparation control method provided by the embodiment of the invention adopts double regulation, realizes automatic regulation of the pressure difference value between the smelting chamber and the atomizing chamber, ensures the powder preparation quality in the pressure difference regulation process, improves the powder preparation efficiency and reduces the powder preparation cost.
Optionally, the preset pressure difference threshold in this embodiment is 0.01 Mpa.
In some embodiments, as shown in fig. 2 and 5, the step S10 of obtaining the pressure difference value between the melting chamber 30 and the atomizing chamber 20 of the gas atomization pulverizing apparatus includes:
step S11: detecting the pressure in the smelting chamber 30 to obtain a first pressure value;
step S12: detecting the pressure in the atomizing chamber 20 to obtain a second pressure value;
step S13: and calculating the pressure difference value between the smelting chamber 30 and the atomizing chamber 20 according to the first pressure value and the second pressure value.
In this embodiment, pressure sensors may be used to sense pressures in the melting chamber and the atomizing chamber, since the atomizing chamber is communicated with the outside atmosphere and a default pressure is a fixed value in the prior art, and the actual pressure in the atomizing chamber is not strictly equal to the fixed value, the obtained pressure difference value is not accurate, and in this embodiment, pressures in the melting chamber and the atomizing chamber are respectively detected in real time to determine the pressure difference value, so that the detected pressure difference value is more accurate, and thus, whether the pressure difference value meets a preset pressure difference threshold value can be accurately determined, and further, accurate control is performed to ensure the quality of powder preparation.
In some embodiments, as shown in fig. 3 and 5, the step S30 of adjusting the liquid level height of the tundish of the smelting chamber 30 to the preset height according to the differential pressure adjustment control signal includes:
s31: adjusting the inclination angle of the inclined furnace 34 of the melting chamber 30 to change the outflow speed of the molten metal in the inclined furnace 34;
it should be noted that the inclination angle of the inclined furnace 34 in this embodiment is an included angle a between the axis of the inclined furnace 34 and the vertical direction, and the inclination angle a in this embodiment may be any value of (0,90), which is determined according to actual situations, and is not specifically limited herein.
S32: detecting the liquid level height of the tundish 33 in real time;
it should be noted that, in this embodiment, the liquid level in the tundish may be measured by a liquid level sensor, for example: an ultrasonic sensor, an infrared sensor or a laser sensor, but other distance measuring sensors may also be used, and are not limited in this regard.
S33: if the liquid level height of the tundish 33 satisfies the preset height, the tilt furnace 34 is retracted to restore the tilt furnace 34 to the initial tilt angle.
In this step, after the liquid level height of the tundish is adjusted to a preset height, the inclination angle of the inclined furnace is adjusted back to the initial inclination angle, and the initial inclination angle is the inclination angle when the differential pressure value meets the preset differential pressure threshold value, so that the phenomenon that the molten liquid in the tundish overflows and blocks a flow guide pipe or the solution is too little to influence the powder preparation is avoided.
It should be noted that, in this embodiment, the determination of the preset height is determined comprehensively according to the relationship between the differential pressure value and the preset differential pressure threshold, the gas content adjustment speed in the melting chamber, and the flow rate of the liquid outlet of the flow guide pipe, and is not limited specifically here.
In this embodiment, when the pressure difference value between the detected melting chamber and the atomizing chamber does not satisfy the preset pressure difference threshold value, the quality of powder preparation is not influenced by the fast and direct mode of guaranteeing the melt flow rate of the liquid outlet of the flow guide pipe by adjusting the melt height of the tundish, and a guarantee is provided for subsequent pressure difference adjustment.
In some embodiments, as shown in fig. 3 and 5, the step S31 of adjusting the tilting angle of the tilting furnace 34 of the melting chamber to change the outflow speed of the melt in the tilting furnace 34 includes:
s311: starting a tilting motor 35 of the tilting furnace;
s312: the tilting motor 35 is controlled to rotate forward or backward to adjust the tilting angle of the tilting furnace 34.
The tilting motor that can direct control tilting furnace below moves in this embodiment and rotates in order to drive the tilting furnace, realizes the inclination adjustment of tilting furnace, realizes the quick accurate control of the inclination of tilting furnace.
In some embodiments, the step S40 of adjusting the content of gas in the smelting chamber 30 according to the differential pressure adjustment control signal until the differential pressure value satisfies the preset differential pressure threshold includes:
adjusting the air inlet amount of an air inlet 32 of the smelting chamber 30;
and/or adjusting the gas output quantity of a gas outlet 31 of the smelting chamber 30.
In the embodiment, the content of gas in the smelting chamber can be changed by adjusting the gas quantity of the gas inlet or the gas outlet of the smelting chamber, so that the pressure difference value between the smelting chamber and the atomizing chamber meets the preset pressure difference threshold value, and the method is simple and convenient.
Optionally, the present embodiment may also assist in adjusting the pressure difference between the melting chamber 30 and the atomizing chamber 20 by adjusting the gas content in the atomizing chamber 20.
Optionally, in the method for controlling powder production by gas atomization of this embodiment, when the pressure difference value is smaller than the preset pressure difference threshold, the negative pressure difference adjustment control signal is generated to control the liquid level height of the tundish 33 of the melting chamber 30 to rise to the first preset height h1 and the content of the gas in the melting chamber 30 to increase until the pressure difference value meets the preset pressure difference threshold.
Optionally, in the method for controlling powder production by gas atomization of this embodiment, when the differential pressure value is smaller than the preset differential pressure threshold, a positive differential pressure adjustment control signal is generated to control the liquid level height of the tundish 33 of the melting chamber 30 to decrease to the second preset height h2 and the content of gas in the melting chamber 30 to decrease until the differential pressure value meets the preset differential pressure threshold.
It should be noted that, as shown in fig. 5, in the present embodiment, when the differential pressure value satisfies the preset differential pressure threshold, the liquid level in the tundish is maintained at h0, where h0 may be 2/3 of the height h of the tundish; when the differential pressure value is lower than a preset differential pressure threshold value, the liquid level height in the tundish is increased to h1, wherein h1> h0 and h1< (3/4) > h; when the pressure difference value is higher than the preset pressure difference threshold value, the liquid level height in the tundish is reduced to h2, wherein h2< h0 and h2> (1/2) × h. h1 and h2 are determined according to actual powder preparation conditions and are not particularly limited.
On the other hand, as shown in fig. 4 and 5, an embodiment of the present invention further provides an atomized powder making control apparatus 100, including:
the acquiring module 10 is used for acquiring a pressure difference value between the smelting chamber 30 and the atomizing chamber 20 of the gas atomization powder making device 200;
it should be noted that in this embodiment, a pressure detector or a differential pressure gauge may be used to obtain a differential pressure value between the melting chamber and the atomizing chamber of the gas atomization powder making apparatus 200.
The judgment processing module 11 is configured to judge whether the differential pressure value satisfies a preset differential pressure threshold, and generate a differential pressure adjustment control signal when the differential pressure value does not satisfy the preset differential pressure threshold;
it should be noted that, in this embodiment, the determination processing module 11 may be a programmable logic controller, and certainly may also be another type of controller, which is not illustrated herein.
The first adjusting module 12 is used for adjusting the liquid level height of the tundish of the smelting chamber 30 to a preset height according to the pressure difference adjusting control signal;
and the second adjusting module 13 is used for adjusting the content of the gas in the smelting chamber 30 according to the pressure difference adjusting control signal until the pressure difference value meets a preset pressure difference threshold value.
In this embodiment, the judgment processing module 11 determines whether the preset differential pressure threshold is met according to the differential pressure value obtained by the obtaining module 10, and when the differential pressure value does not meet the preset differential pressure threshold, sends a differential pressure adjustment signal to the first adjustment module 12 and the second adjustment module 13 to control the first adjustment module 12 to adjust the outflow speed of the molten liquid in the inclined furnace, and controls the second adjustment module 13 to adjust the gas outlet amount of the gas outlet 31 or the gas inlet amount of the gas inlet 32 of the melting chamber 30, so as to achieve automatic adjustment of the differential pressure value between the melting chamber 30 and the atomizing chamber 20, ensure the powder preparation quality in the differential pressure adjustment process, improve the powder preparation efficiency, and reduce the powder preparation cost.
Alternatively, as shown in fig. 5, the second adjusting module 13 of the present embodiment includes a first adjusting valve unit 131, the first adjusting valve unit 131 is disposed at the gas outlet 31 of the melting chamber 30, and the first adjusting valve unit 131 can adjust the opening degree according to the differential pressure adjusting control signal to increase or decrease the gas outlet amount of the gas outlet 31;
and/or, the second adjusting module 13 comprises a second adjusting valve unit 132, the second adjusting valve unit 132 is arranged at the air inlet 32 of the smelting chamber 30, and the second adjusting valve unit 132 can adjust the opening degree according to the pressure difference adjusting control signal so as to increase or decrease the air inlet amount of the air inlet 32.
It should be noted that the first regulating valve unit 131 and the second regulating valve unit 132 of the present embodiment may be an electromagnetic regulating valve, a pneumatic regulating valve or an electric regulating valve, as long as the gas outlet amount of the gas outlet 31 and the gas inlet amount of the gas inlet 32 of the melting chamber 30 can be adjusted, and are not particularly limited herein.
The gas atomization powder preparation control device 100 of the embodiment can rapidly adjust the gas content in the melting chamber 30 and further adjust the pressure in the melting chamber 30 by setting the adjusting valves on the gas outlet 31 and the gas inlet 32 of the melting chamber 30, for example: when it is necessary to increase the gas content and thus the pressure, the amount of the exhaust gas from the gas outlet 31 may be decreased by the opening degree of the first regulator valve unit 31, while the amount of the intake gas from the gas inlet 32 may be increased by the opening degree of the second regulator valve unit 32.
In another aspect, as shown in fig. 5, an embodiment of the present invention further provides an atomized powder making system, which includes an atomized powder making apparatus 200 and the atomized powder making control apparatus 100 of the above embodiment disposed on the atomized powder making apparatus 200.
The gas atomization powder preparation system of the embodiment of the invention realizes automatic adjustment of the pressure difference value between the smelting chamber 30 and the atomizing chamber 20 by arranging the gas atomization powder preparation control device 100 on the gas atomization powder preparation equipment 200, ensures the powder preparation quality in the pressure difference adjustment process, improves the powder preparation efficiency and reduces the powder preparation cost.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A gas atomization powder manufacturing control method is applied to gas atomization powder manufacturing equipment and is characterized by comprising the following steps:
acquiring a pressure difference value between a smelting chamber and an atomizing chamber of the gas atomization powder making equipment;
if the pressure difference value does not meet a preset pressure difference threshold value, generating a pressure difference adjusting control signal;
adjusting the liquid level height of a tundish of the smelting chamber to a preset height according to the differential pressure adjusting control signal;
and adjusting the content of the gas in the smelting chamber according to the pressure difference adjusting control signal until the pressure difference value meets the preset pressure difference threshold value.
2. The method of claim 1, wherein the step of obtaining a pressure differential value between a melting chamber and an atomizing chamber of the atomized powder production device comprises:
detecting the pressure in the smelting chamber to obtain a first pressure value;
detecting the pressure in the atomization to obtain a second pressure value;
and calculating to obtain a pressure difference value between the smelting chamber and the atomizing chamber according to the first pressure value and the second pressure value.
3. The gas atomization pulverizing control method of claim 1, wherein the step of adjusting the liquid level height of the tundish of the smelting chamber to a preset height according to the differential pressure adjusting control signal comprises:
adjusting the inclination angle of an inclined furnace of the smelting chamber to change the outflow speed of the molten liquid in the inclined furnace;
detecting the liquid level height of the tundish in real time;
and if the liquid level height of the tundish meets the preset height, the inclined furnace is retracted to restore the inclined furnace to the initial inclined angle.
4. The method of claim 3, wherein the step of adjusting the tilt angle of the tilting furnace of the melting chamber to change the outflow rate of the melt from the tilting furnace comprises:
starting a tilting motor of the tilting furnace;
and controlling the tilting motor to rotate forwards or backwards to adjust the tilting angle of the tilting furnace.
5. The gas atomization powder production control method of claim 1, wherein the step of adjusting the content of the gas in the smelting chamber according to the pressure difference adjusting control signal until the pressure difference value meets a preset pressure difference threshold comprises:
adjusting the air inflow of an air inlet of the smelting chamber;
and/or adjusting the gas output of a gas outlet of the smelting chamber.
6. The gas atomization powder production control method of any one of claims 1 to 5, wherein when the pressure difference value is smaller than the preset pressure difference threshold value, a negative pressure difference adjustment control signal is generated to control the liquid level height of a tundish of the smelting chamber to rise to a first preset height and control the content of gas in the smelting chamber to increase until the pressure difference value meets the preset pressure difference threshold value.
7. The gas atomization powder production control method of claim 6, wherein when the pressure difference value is smaller than the preset pressure difference threshold value, a positive pressure difference adjustment control signal is generated to control the liquid level height of a tundish of the smelting chamber to drop to a second preset height and control the content of gas in the smelting chamber to decrease until the pressure difference value meets the preset pressure difference threshold value.
8. The utility model provides a gas atomization powder process controlling means which characterized in that includes:
the acquisition module is used for acquiring a pressure difference value between a smelting chamber and an atomizing chamber of the gas atomization powder making equipment;
the judgment processing module is used for judging whether the differential pressure value meets a preset differential pressure threshold value or not and generating a differential pressure adjustment control signal when the differential pressure value does not meet the preset differential pressure threshold value;
the first adjusting module is used for adjusting the liquid level height of a tundish of the smelting chamber to a preset height according to the pressure difference adjusting control signal;
and the second adjusting module is used for adjusting the content of the gas in the smelting chamber according to the pressure difference adjusting control signal until the pressure difference value meets the preset pressure difference threshold value.
9. The gas atomization pulverizing control device of claim 8, wherein the second adjusting module comprises a first adjusting valve unit, the first adjusting valve unit is arranged at an air outlet of the smelting chamber, and the first adjusting valve unit can adjust the opening degree according to the pressure difference adjusting control signal to increase or decrease the air outlet amount of the air outlet;
and/or the second adjusting module comprises a second adjusting valve unit, the second adjusting valve unit is arranged at the air inlet of the smelting chamber, and the second adjusting valve unit can adjust the opening degree according to the pressure difference adjusting control signal so as to increase or decrease the air inflow of the air inlet.
10. An atomized gas pulverizing system, comprising atomized gas pulverizing equipment and the atomized gas pulverizing control device of any one of claims 8 to 9 arranged on the atomized gas pulverizing equipment.
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