Aluminum alloy smelting and casting integrated equipment control method

Abstract

The invention discloses an integrated equipment control method for aluminum alloy smelting and casting, which relates to the technical field of aluminum alloy smelting and solves the problem that it is difficult to detect the refining effect with low precision. The invention accurately calculates the amount of inert gas based on the molten liquid capacity and the empirical coefficient, and accurately adds the inert gas within the preset refining cycle, and at the same time, with a stirring speed of 20r / min-30r / min, the discharge of the gas in the molten liquid is effectively promoted; a unique laser rangefinder sensor detection and concave surface verification and evaluation system can efficiently and accurately determine whether the refining is completed; compared with the traditional method of judging by experience, this innovative method greatly improves the stability and reliability of the refining quality; when the refining does not meet the standard, the amount of inert gas to be added is reconfirmed based on accurate calculation, the refining process is further optimized, and it is ensured that the molten liquid quality meets the high standard requirements.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum alloy smelting, and in particular to a method for controlling integrated equipment for aluminum alloy smelting and casting. Background Art

[0002] Aluminum alloy smelting and casting is a process of melting aluminum alloy raw materials into liquid alloy and then casting them into specific molds for forming. It is widely used in industrial production. Raw materials such as aluminum alloy scrap, pure aluminum ingots, alloy additives, etc. are strictly inspected to ensure that their purity and composition meet production requirements. At the same time, the inside of the furnace is cleaned, and the furnace lining, heating elements, etc. are checked to see if they are intact. Smelting tools such as stirring rods, slag ladles, and thermometers are prepared to ensure that the tools are clean and dry. Raw materials are added to the furnace in a certain order and proportion. Generally, pure aluminum ingots are added first, and alloy elements and scraps are added after they are melted. The heating system is started to heat the materials in the furnace to a melting temperature of 650-750℃ at a suitable heating rate (such as 3-10℃ / min, adjusted according to the furnace and the amount of materials). During this period, the melt is stirred mechanically or by gas to fully dissolve and mix the alloy elements, improve the uniformity of the melt, and accelerate heat transfer.

[0003] In the past, the determination of the amount of inert gas mainly relied on the subjective experience of operators, and lacked a scientific and accurate calculation method. This resulted in either insufficient inert gas addition, which could not effectively remove harmful gases such as hydrogen in the melt, making it easy for castings to produce defects such as pores and looseness during subsequent processing and use, seriously affecting product quality; or excessive addition, resulting in waste of resources and increased production costs. At the same time, excessive inert gas residues may also have a negative impact on certain properties of aluminum alloys; Difficulty in detecting refining effects: Traditional refining effect detection methods are limited, mainly relying on manual observation of the surface state of the melt or simple chemical analysis, which are neither accurate nor timely; for example, manual observation is difficult to determine the residual gas and impurities in the melt, and chemical analysis is time-consuming and cannot provide real-time feedback during the refining process, which is not conducive to timely adjustment of refining process parameters. In addition, there is insufficient research on the relationship between the surface morphology and quality of the melt after refining, and it is impossible to accurately determine whether the refining is completed through effective detection methods, which is prone to misjudgment, affecting the continuity of production and the stability of product quality. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a control method for integrated aluminum alloy smelting and casting equipment, which solves the problem that the detection of refining effect is difficult and has low precision.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A method for controlling integrated equipment for aluminum alloy smelting and casting, comprising the following steps:

[0006] Step 1: Add raw materials into the furnace in a preset order and proportion. First add pure aluminum ingots, and then add alloy elements and waste after they are melted. Control the heating system of the furnace. The processing steps are:

[0007] Heating the material in the furnace to a predetermined melting temperature at a preset heating rate;

[0008] During the smelting stage, the mechanical stirring device is controlled to stir the melt at a preset rate to fully dissolve and mix the alloy elements in the furnace;

[0009] Step 2: based on the confirmed overall capacity of the melt to be refined, the total amount of inert gas to be refined is confirmed, and after the refining cycle is completed, a laser range finder is used to obtain a concave surface on the melt surface, and the concave surface is verified with a preset reference surface to assess whether the refining is completed. If completed, subsequent operations are performed; if not completed, the amount of inert gas to be added is confirmed;

[0010] Preferably, in step 2, the specific method of obtaining the concave surface on the surface of the molten metal is:

[0011] According to the confirmed total volume R of the melt to be refined, the total amount Q of the inert gas to be refined is determined by: R×C1=Q, where C1 is a preset fixed coefficient factor;

[0012] According to the confirmed total amount of inert gas Q, the inert gas is gradually added to the melt to be refined within a preset refining cycle, and the amount added per unit time = Q ÷ refining cycle, and during the inert gas addition process, the mechanical stirring device is controlled to stir the melt, and the stirring rate is a preset value;

[0013] At the end of the refining cycle, a laser ranging sensor installed on the top of the furnace is used to extract the image of the outer surface of the melt, confirm the point distance of each point inside the outer surface of the melt, and construct a set of horizontal base surfaces based on the location of the laser ranging sensor. Then, based on the confirmed point distance, a concave surface belonging to the outer surface of the melt is generated.

[0014] Preferably, in step 2, the specific method for assessing whether the refining is completed is:

[0015] Verify the confirmed concave surface with the preset reference surface: lock the point with the longest distance from the point in the concave surface and record it as the feature point, and the reference surface is the preset base surface, and there is a pre-calibrated center point in the reference surface, overlap the feature point with the center point, and the concave surface has an associated horizontal base surface. In the overlap process, the horizontal base surface is parallel to the upper circle of the reference surface, and several overlap processes are performed. In each overlap process, the concave surface is rotated by an angle, and the rotation direction is clockwise, with the vertical line between the feature point and the horizontal base surface as the central axis for rotation. When the rotation is repeated, stop the rotation, and each rotation angle corresponds to a set of overlap processes;

[0016] The generated several overlapping processes are compared by bands: the vertical connection line between the internal characteristic points of the concave surface and the horizontal base surface is used as the characteristic connection line, and a set of rotating base surfaces is generated according to the characteristic connection line. The rotating base surface rotates in real time. Every time it rotates by a set of angles, the two bands in the concave surface and the reference surface that completely overlap with the rotating base surface are recorded as comparison bands, and the overlapping curve segments of the two comparison bands are confirmed, and the overlapping proportions of the two comparison bands are locked: the line length of the overlapping curve segment is calibrated as L1, and the line lengths of the two comparison bands are calibrated as B1 and B2 respectively, using: L1÷B1=Z1 and L1÷B2=Z2, and then Z1 and Z2 are averaged to confirm the overlapping proportions of the two comparison bands. Every time the rotating base surface rotates by a set of angles, a set of overlapping proportions is confirmed. When the rotating base surface rotates to overlap, the confirmation of the overlapping proportions is stopped, and the several groups of overlapping proportions associated with this overlapping process are averaged to confirm the process characteristics;

[0017] Then confirm the process characteristics associated with different overlapping processes in turn and mark them as Tz i , where i represents different overlapping processes, and several groups of process characteristics Tz are identified i Does it exist: Tz i If the overlap process ≥Y1 exists, it means that the refining is completed and the subsequent casting process is executed. If it does not exist, it means that the refining is not completed and the amount of inert gas to be added is confirmed, where Y1 is the preset value.

[0018] Preferably, in step 2, the specific method for confirming the amount of inert gas to be added is:

[0019] Based on different process characteristics Tz associated with several different overlapping processes i , select the maximum value Tz i max, using (Y1-Tz i max)÷Y1=QB lock missing ratio QB;

[0020] Based on the total amount of inert gas Q confirmed this time, the amount of inert gas to be added DJ is confirmed using: Q×QB=DJ. According to the amount added per unit time, the refining cycle is extended, and a total amount of inert gas DJ is added again for refining to complete the refining process.

[0021] Step 3: The refined molten metal is transported to the mold cavity, and the molten metal is filled into the mold through the die casting according to the preset pressure data to obtain a molded part, and the molded part is proofread with the preset standard part model, and the preset pressure data is adjusted based on the proofreading result. The specific sub-steps are:

[0022] Use machine vision equipment to confirm the area of ​​the die-casting surface of the molded part, calibrate the confirmed area parameter as M1, and then confirm the die-casting surface area of ​​the standard part model based on the preset standard part model and calibrate it as Mb. If M1=Mb, it means that the molded part is correctly proofread and its preset pressure data belongs to normal die-casting data, and no adjustment is required;

[0023] If M1≠Mb, then confirm the numerical values ​​of M1 and Mb. If M1>Mb, then reduce one unit pressure value in the next stage of die-casting process, and its unit pressure value is the preset value. If M1<Mb, then increase one unit pressure value in the next stage of die-casting process, and record the difference between its die-casting surface area and M1 in the next stage, and its difference = die-casting surface area in the next stage - M1;

[0024] And confirm the area difference between M1 and Mb, the area difference = |M1-Mb|, and use: area difference ÷ difference = pressure value to be adjusted. According to the confirmed pressure value to be adjusted, directly adjust the pressure data; if the pressure value to be adjusted is greater than 0, adjust it upwards, if the pressure value to be adjusted is less than 0, adjust it downwards.

[0025] The present invention provides a method for controlling integrated aluminum alloy smelting and casting equipment. Compared with the prior art, it has the following beneficial effects:

[0026] The present invention accurately calculates the amount of inert gas based on the melt capacity and the empirical coefficient, and accurately adds it within the preset refining cycle. At the same time, the stirring speed of 20r / min-30r / min is used to effectively promote the discharge of gas in the melt; the unique laser range sensor detection and concave surface verification and evaluation system can efficiently and accurately determine whether the refining is completed; compared with the traditional empirical judgment method, this innovative method greatly improves the stability and reliability of the refining quality; when the refining does not meet the standard, the amount of inert gas to be added is reconfirmed based on accurate calculations, and the refining process is further optimized to ensure that the melt quality meets high standards.

[0027] By using machine vision equipment to accurately measure the die-casting surface area of ​​molded parts and compare it with the standard part model, the quality of molded parts can be judged quickly and accurately. When there is a deviation in the area, the pressure data is adjusted according to rigorous calculation logic to achieve real-time optimization of the die-casting process. This mechanism can effectively reduce the scrap rate and improve the consistency of product quality. At the same time, it reduces mold loss caused by improper pressure, extends the service life of the mold, further reduces production costs, and enhances the competitiveness of products in the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the process of the present invention;

[0029] Figure 2 It is a schematic diagram for determining the pressure value to be adjusted in the present invention. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1 The present application provides a method for controlling an integrated aluminum alloy smelting and casting equipment, comprising the following steps:

[0032] Step 1: Add raw materials into the furnace in a preset order and proportion. First, add pure aluminum ingots. After they are melted, add alloy elements and waste. Control the heating system of the furnace to fully dissolve and mix the alloy elements in the furnace to obtain a molten liquid to be refined. The control process steps are as follows:

[0033] The material in the furnace is heated to a predetermined melting temperature at a preset heating rate, which is generally between 650°C and 750°C, and the heating rate is generally about 10°C / min;

[0034] During the smelting stage, the mechanical stirring equipment is controlled to stir the melt at a preset rate to fully dissolve and mix the alloy elements, improve the uniformity of the melt, and also help accelerate heat transfer and shorten the smelting time. The stirring speed is generally set between 50r / min-200r / min;

[0035] Step 2: based on the confirmed overall capacity of the melt to be refined, the total amount of inert gas to be refined is confirmed, and after the refining cycle is completed, a laser range finder is used to obtain a concave surface on the melt surface, and the concave surface is verified with a preset reference surface to assess whether the refining is completed. If completed, subsequent operations are performed; if not completed, the amount of inert gas to be added is confirmed to complete the refining process;

[0036] Among them, the specific methods for assessing whether refining is completed are:

[0037] According to the confirmed total volume R of the melt to be refined, the total amount Q of the inert gas to be refined is determined by: R×C1=Q, where C1 is a preset fixed coefficient factor, and its specific value is determined by the operator based on experience;

[0038] According to the confirmed total amount of inert gas Q, the inert gas is gradually added to the melt to be refined within the preset refining cycle. The amount added per unit time = Q ÷ refining cycle. During the inert gas addition process, the mechanical stirring device is controlled to stir the melt. The stirring rate is a preset value, generally 20r / min-30r / min. Argon is generally selected as the inert gas.

[0039] At the end of the refining cycle, a laser distance sensor installed on the top of the furnace is used to extract the image of the outer surface of the melt, confirm the point distance of each point inside the outer surface of the melt, and construct a set of horizontal base surfaces according to the location of the laser distance sensor. Then, based on the confirmed point distance, a concave surface belonging to the outer surface of the melt is generated. The laser distance sensor is provided with a heat shield outside to isolate the high temperature of the furnace. When the laser beam irradiates the surface of the melt, it will be reflected back and received by the sensor. The sensor calculates the distance to the surface of the melt according to the propagation time and speed of the laser. By measuring at different positions, the contour of the melt surface can be drawn, thereby determining the specific area and depth of the middle depression. This method has high accuracy and can obtain the shape information of the melt surface in real time.

[0040] Verify the confirmed concave surface with the preset reference surface: lock the point with the longest distance from the point in the concave surface and record it as a feature point, and the reference surface is a preset base surface, which is prepared by relevant personnel in advance based on experience. When the corresponding molten liquid in the furnace is melted, the parameters associated with each smelting process are consistent. Therefore, in each smelting process, the concave surface of the corresponding molten liquid can be confirmed, so that the reference surface can be confirmed in advance, and there is a pre-calibrated center point in the reference surface. The feature point is overlapped with the center point, and the concave surface has an associated horizontal base surface. In the overlap process, the horizontal base surface is parallel to the upper circle of the reference surface. Perform several overlap processes, and the concave surface is rotated by an angle in each overlap process. The rotation direction is clockwise, that is, the vertical line between the feature point and the horizontal base surface is used as the central axis for rotation. When the rotation is repeated, the rotation stops, and each rotation angle corresponds to a set of overlap processes.

[0041] The band comparison is performed on several generated overlapping processes: the vertical connection line between the internal characteristic points of the concave surface and the horizontal base surface is used as the characteristic connection line, and a set of rotation base surfaces is generated according to the characteristic connection line. The rotation base surface rotates in real time. Every time a set of angles are rotated, the two bands in the concave surface and the reference surface that completely overlap with the rotation base surface are recorded as comparison bands (that is, there are partial waveform segments located on the same vertical horizontal base surface in the two surfaces. In order to conduct a comprehensive analysis of the overlap degree of the two surfaces in this overlap process, it is necessary to analyze the waveform segments located on the same vertical horizontal plane in turn, and evaluate the specific overlap of the corresponding overlap process based on the actual analysis results. The overlap situation is used to evaluate the relevant effect of this refining), confirm the overlap curve segments of the two groups of comparison bands, and lock the overlap ratio of the two groups of comparison bands: mark the line length of the overlap curve segment as L1, and mark the line lengths of the two groups of comparison bands as B1 and B2 respectively, using: L1÷B1=Z1 and L1÷B2=Z2, and then average Z1 and Z2 to confirm the overlap ratio of the two groups of comparison bands. Each time the rotation base rotates a group of angles, a group of overlap ratios is confirmed. When the rotation base rotates to overlap, stop confirming the overlap ratio, average the overlap ratios of several groups associated in this overlap process, and confirm the process characteristics;

[0042] Then confirm the process characteristics associated with different overlapping processes in turn and mark them as Tz i , where i represents different overlapping processes, and several groups of process characteristics Tz are identified i Does it exist: Tz i ≥Y1 overlap process, if there is, it means that the current refining is completed, and the subsequent casting process is executed; if not, it means that the refining is not completed, and the amount of inert gas to be added is reconfirmed, where Y1 is a preset value, and its specific value is determined by the operator based on experience;

[0043] Specifically, the refining process is to remove the gas inside the melt. After the gas is removed, the overall viscosity of the corresponding melt will change. Then, after the stirring action of the corresponding stirrer, a concave surface will appear on the upper end of the corresponding melt. The rotation speed of the stirrer is a fixed value. Then, the concave surface generated at the upper end of the melt after refining should be the same. Based on the corresponding laser sensor, the corresponding concave surface of the melt can be locked. The concave surface generated after actual refining is compared with the set reference surface to identify the standard state of the concave surface. Therefore, in the comparison process, it is necessary to confirm the curved segments on the same horizontal plane in the concave surface for verification and evaluate their overlap. The sequential processing process is adopted. First, the concave surface overlap is performed, and then the band overlap check on the same horizontal plane is performed to confirm whether the refining is completed.

[0044] The specific method for reconfirming the amount of inert gas to be added is:

[0045] Based on different process characteristics Tz associated with several different overlapping processes i , select the maximum value Tz i max, using (Y1-Tz i max)÷Y1=QB lock missing ratio QB;

[0046] Based on the total amount of inert gas Q confirmed this time, the amount of inert gas to be added DJ is confirmed using: Q×QB=DJ. According to the amount added per unit time, the refining cycle is extended, and a total amount of inert gas DJ is added again for refining to complete the refining process. If the refining does not meet the standard, it means that the inert gas is not enough. Therefore, it is necessary to add inert gas for the second time according to the specific addition characteristics within the refining cycle to improve the accuracy of the refining process.

[0047] Step 3: The refined molten metal is transported to the mold cavity, and the molten metal is filled into the mold through the die casting according to the preset pressure data to obtain a molded part, and the molded part is proofread with the preset standard part model, and the preset pressure data is adjusted based on the proofreading result, wherein the specific sub-steps of the adjustment are:

[0048] Combination Figure 2 , use machine vision equipment to confirm the area of ​​the die-casting surface of the molded part (the die-casting surface is the molded surface being die-cast), calibrate the confirmed area parameter as M1, and then based on the preset standard part model, confirm the die-casting surface area of ​​this standard part model and calibrate it as Mb. If M1=Mb, it means that the molded part is correctly proofread, and its preset pressure data belongs to normal die-casting data, and no adjustment is required;

[0049] If M1≠Mb, confirm the numerical values ​​of M1 and Mb. If M1>Mb, reduce a unit pressure value in the next stage of die-casting process. The unit pressure value is a preset value, generally 1Mpa. If M1<Mb, increase a unit pressure value in the next stage of die-casting process. Record the difference between the die-casting surface area and M1 in the next stage. The difference = the die-casting surface area in the next stage - M1.

[0050] And confirm the area difference between M1 and Mb, the area difference = |M1-Mb|, and adopt: area difference ÷ difference = pressure value to be adjusted. According to the confirmed pressure value to be adjusted, directly adjust the pressure data. If the pressure value to be adjusted is greater than 0, adjust it upwards; if the pressure value to be adjusted is less than 0, adjust it downwards;

[0051] Specifically, when the pressure data is increased, the die-casting surface area of ​​the next stage must be increased compared with the area of ​​the previous stage, so the confirmed difference is a positive value. Based on the confirmed area difference and the confirmed difference, the pressure data that needs to be adjusted can be locked. The pressure data is also a positive value, so it can be directly increased.

[0052] When the pressure data decreases, the die-casting surface area of ​​the next stage must be lower than that of the previous stage, so the confirmed difference is a negative value. Based on the confirmed area difference and the confirmed difference, the pressure data that needs to be adjusted can be locked. Therefore, if the pressure data is a negative value, it can be directly decreased.

[0053] Some of the data in the above formulas are numerically calculated by removing their dimensions. Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0054] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. Aluminum alloy smelting and casting integrated equipment control method, characterized in that: The following steps are involved: Step 1: Add the raw materials into the furnace in a preset order and proportion, add the pure aluminum ingot first, add the alloy elements and waste materials after it is melted, control the heating system of the furnace, heat the materials in the furnace to a predetermined melting temperature at a preset heating rate, and fully dissolve and mix the alloy elements in the furnace. In the smelting stage, control the mechanical stirring equipment to stir the molten liquid at a preset rate, so that the alloy elements in the furnace are fully dissolved and mixed to obtain the molten liquid to be refined; Step 2: based on the confirmed overall capacity of the melt to be refined, the total amount of inert gas to be refined is confirmed, and after the refining cycle is completed, a laser range finder is used to obtain a concave surface on the melt surface, and the concave surface is verified with a preset reference surface to assess whether the refining is completed. If completed, subsequent operations are performed; if not completed, the amount of inert gas to be added is confirmed; Step three: convey the refined molten metal into the mold cavity, fill the mold with the molten metal through die casting according to the preset pressure data to obtain a molded part, calibrate the molded part with the preset standard part model, and adjust the preset pressure data based on the calibration result.

2. The aluminum alloy melting and casting integrated equipment control method according to claim 1, characterized in that: In the step 2, the specific method of obtaining the concave surface of the melt surface is: According to the confirmed total volume R of the melt to be refined, the total amount Q of the inert gas to be refined is determined by: R×C1=Q, where C1 is a preset fixed coefficient factor; According to the confirmed total amount of inert gas Q, the inert gas is gradually added to the melt to be refined within a preset refining cycle, and the amount added per unit time = Q ÷ refining cycle, and during the inert gas addition process, the mechanical stirring device is controlled to stir the melt, and the stirring rate is a preset value; At the end of the refining cycle, a laser ranging sensor installed on the top of the furnace is used to extract the image of the outer surface of the melt, confirm the point distance of each point inside the outer surface of the melt, and construct a set of horizontal base surfaces based on the location of the laser ranging sensor. Then, based on the confirmed point distance, a concave surface belonging to the outer surface of the melt is generated.

3. The aluminum alloy smelting and casting integrated equipment control method according to claim 2, characterized in that: In step 2, the specific method for evaluating whether the refining is completed is: Verify the confirmed concave surface with the preset reference surface: lock the point with the longest distance from the point in the concave surface and record it as the feature point. There is a pre-calibrated center point in the reference surface. Overlap the feature point with the center point. The concave surface has an associated horizontal base surface. During the overlap process, the horizontal base surface is parallel to the upper circle of the reference surface. Perform several overlap processes. In each overlap process, the concave surface rotates an angle in a clockwise direction. Rotate with the vertical line between the feature point and the horizontal base surface as the central axis. Stop rotating when a repeated process occurs. Each rotation angle corresponds to a set of overlap processes. The generated several overlapping processes are compared by bands: the vertical connection line between the internal characteristic points of the concave surface and the horizontal base surface is used as the characteristic connection line, and a set of rotating base surfaces is generated according to the characteristic connection line. The rotating base surface rotates in real time. Every time it rotates by a set of angles, the two bands in the concave surface and the reference surface that completely overlap with the rotating base surface are recorded as comparison bands, and the overlapping curve segments of the two comparison bands are confirmed, and the overlapping proportions of the two comparison bands are locked: the line length of the overlapping curve segment is calibrated as L1, and the line lengths of the two comparison bands are calibrated as B1 and B2 respectively, using: L1÷B1=Z1 and L1÷B2=Z2, and then Z1 and Z2 are averaged to confirm the overlapping proportions of the two comparison bands. Every time the rotating base surface rotates by a set of angles, a set of overlapping proportions is confirmed. When the rotating base surface rotates to overlap, the confirmation of the overlapping proportions is stopped, and the several groups of overlapping proportions associated with this overlapping process are averaged to confirm the process characteristics; Then confirm the process characteristics associated with different overlapping processes in turn and mark them as Tz i , where i represents different overlapping processes, and several groups of process characteristics Tz are identified i Does it exist: Tz i If there is an overlapping process ≥Y1, it means that the refining is completed and the subsequent casting process is executed, where Y1 is the preset value.

4. The aluminum alloy smelting and casting integrated equipment control method according to claim 3, characterized in that: Several groups of process characteristics Tz i If Tz does not exist i If the overlap process is ≥Y1, it means that the refining is not completed and the amount of inert gas to be added should be confirmed.

5. The aluminum alloy smelting and casting integrated equipment control method according to claim 4, characterized in that: In step 2, the specific method for confirming the amount of inert gas to be added is: Based on different process characteristics Tz associated with several different overlapping processes i , select the maximum value Tz i max, using (Y1-Tz i max)÷Y1=QB lock missing ratio QB; Based on the total amount of inert gas Q confirmed this time, the amount of inert gas to be added DJ is confirmed using: Q×QB=DJ. According to the amount added per unit time, the refining cycle is extended, and a total amount of inert gas DJ is added again for refining to complete the refining process.

6. The aluminum alloy melting and casting integrated equipment control method according to claim 1, characterized in that: In step 3, the specific sub-steps for adjusting the preset pressure data are: Use machine vision equipment to confirm the area of ​​the die-casting surface of the molded part, calibrate the confirmed area parameter as M1, and then confirm the die-casting surface area of ​​the standard part model based on the preset standard part model and calibrate it as Mb. If M1=Mb, it means that the molded part is correctly proofread and its preset pressure data belongs to normal die-casting data, and no adjustment is required; If M1≠Mb, then confirm the numerical values ​​of M1 and Mb. If M1>Mb, then reduce one unit pressure value in the next stage of die-casting process, and its unit pressure value is the preset value. If M1<Mb, then increase one unit pressure value in the next stage of die-casting process, and record the difference between its die-casting surface area and M1 in the next stage, and its difference = die-casting surface area in the next stage - M1; And confirm the area difference between M1 and Mb, the area difference = |M1-Mb|, and use: area difference ÷ difference = pressure value to be adjusted. According to the confirmed pressure value to be adjusted, directly adjust the pressure data.

7. The aluminum alloy smelting and casting integrated equipment control method according to claim 6, characterized in that: If the pressure value to be adjusted is greater than 0, adjust it upwards; if the pressure value to be adjusted is less than 0, adjust it downwards.

Images