TWI462790B - Mold surface control system for metal casting process and its control method - Google Patents
Mold surface control system for metal casting process and its control method Download PDFInfo
- Publication number
- TWI462790B TWI462790B TW097136238A TW97136238A TWI462790B TW I462790 B TWI462790 B TW I462790B TW 097136238 A TW097136238 A TW 097136238A TW 97136238 A TW97136238 A TW 97136238A TW I462790 B TWI462790 B TW I462790B
- Authority
- TW
- Taiwan
- Prior art keywords
- value
- mold
- liquid level
- liquid
- controller
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 101
- 238000005058 metal casting Methods 0.000 title claims description 26
- 239000007788 liquid Substances 0.000 claims description 157
- 238000000465 moulding Methods 0.000 claims description 42
- 238000005266 casting Methods 0.000 claims description 29
- 238000009749 continuous casting Methods 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 230000001276 controlling effect Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 32
- 239000010959 steel Substances 0.000 description 32
- 238000007654 immersion Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000047 product Substances 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 210000001161 mammalian embryo Anatomy 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000009172 bursting Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000002257 embryonic structure Anatomy 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005422 blasting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 235000014347 soups Nutrition 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
Landscapes
- Continuous Casting (AREA)
Description
本發明係有關於一種液面控制系統及其控制方法，詳言之，係關於一種金屬鑄造製程之模液面控制系統及其控制方法。The present invention relates to a liquid level control system and a control method thereof, and more particularly to a mold liquid level control system for a metal casting process and a control method thereof.
圖1顯示習知鋼胚連鑄製程之示意圖；圖2顯示習知浸入式鑄嘴之示意圖。配合參考圖1及圖2，在習知技術中，係將高溫的熔融鋼液11集中於一盛鋼桶12之中，再經由一鋼液分配器13及複數個浸入式鑄嘴14，同時導引至數個預設尺寸的鑄模15中，通過一鑄道16並經過冷卻、矯直製成一鋼條17，再以一焰切裝置18切割該鋼條17以獲得特定尺寸的鋼胚171。經由不斷的更換該盛鋼桶12以補充鋼液11，則該製程即可達到連續鑄造鋼胚之目的。Figure 1 shows a schematic view of a conventional steel preform continuous casting process; Figure 2 shows a schematic view of a conventional immersion casting nozzle. Referring to FIG. 1 and FIG. 2, in the prior art, the molten molten steel 11 of high temperature is concentrated in a steel ladle 12, and then through a molten steel distributor 13 and a plurality of immersion casting nozzles 14, simultaneously Guided to a plurality of molds 15 of predetermined size, a steel strip 17 is formed by a casting pass 16 and cooled, straightened, and the steel strip 17 is cut by a flame cutting device 18 to obtain a steel preform of a specific size. 171. By continuously replacing the ladle 12 to supplement the molten steel 11, the process can achieve the purpose of continuously casting the steel.
該浸入式鑄嘴14具有一滑動閥門141、一上固定板142及一下固定板143，藉由調整該滑動閥門141與該上固定板142及該下固定板143之相對位置，即可控制該浸入式鑄嘴14之開度大小，以控制由該鋼液分配器13流入該鑄模14之該鋼液11流量，進而控制維持在該鑄模15內之該鋼液11總量。The immersion nozzle 14 has a sliding valve 141, an upper fixing plate 142 and a lower fixing plate 143. By adjusting the relative position of the sliding valve 141 and the upper fixing plate 142 and the lower fixing plate 143, the sliding nozzle 141 can be controlled. The opening degree of the immersion nozzle 14 controls the flow rate of the molten steel 11 flowing into the mold 14 from the molten steel distributor 13, thereby controlling the total amount of the molten steel 11 held in the mold 15.
在習知鋼胚連鑄製程中，若在該鑄模15內之該鋼液11總量越穩定，則該鋼液11可保持在一設定之液位；反之，若在該鑄模15內之該鋼液11總量不穩定，上下振盪之該鋼液11會造成捲渣等鋼胚品質缺陷，嚴重時則會因液位過高造 成該鋼液11溢出該鑄模15，或液位過低使得尚未凝固的鋼液11由該鑄模15下洩出，兩者均會造成爆湯，並造成設備毀損。In the conventional steel preform continuous casting process, if the total amount of the molten steel 11 in the mold 15 is more stable, the molten steel 11 can be maintained at a set liquid level; otherwise, if the molten steel is in the mold 15 11 The total amount is unstable. The molten steel 11 that oscillates up and down will cause defects in the quality of the steel slag and other steel embryos. In severe cases, the liquid level will be too high. The molten steel 11 overflows the mold 15, or the liquid level is too low, so that the molten steel 11 which has not been solidified is discharged from the mold 15, both of which cause bursting of the soup and cause damage to the equipment.
習知之模液面控制方法係經由一個液位感測器(圖未示出)去偵測在該鑄模15內鋼液11之一實際液位，並根據該實際液位與預先設定之一目標液位之誤差，以一習知線性之模液面控制器(例如：PID控制器)調整該浸入式鑄嘴14之該滑動閥門141之開度，以控制流入該鑄模15之該鋼液11流量，而達成控制模液面之功效。The conventional mold level control method detects a real liquid level of the molten steel 11 in the mold 15 via a liquid level sensor (not shown), and according to the actual liquid level and a predetermined target In the error of the liquid level, the opening degree of the sliding valve 141 of the immersion nozzle 14 is adjusted by a conventional linear liquid level controller (for example, a PID controller) to control the molten steel flowing into the mold 15 Flow, and achieve the effect of controlling the mold surface.
由於習知線性控制器之控制性能有限，當機電設備產生劣化，或是澆鑄速度等製程參數產生變化時，就會干擾整個鋼胚連鑄製程之穩定性及模液面的控制精確度，因此生產線的機電維護人員必需花費較多人力維持設備在最佳的生產狀態，否則會生產出品質不良的鋼胚。然而，設備之劣化是無法避免的，經常更換設備會造成生產成本的提高。再者，操作人員必須根據不同產品調整製程參數，而習知線性控制器僅使用一組固定的控制器參數，因此無法滿足生產線所需高精度與高穩定性的要求。Due to the limited control performance of the conventional linear controller, when the electromechanical equipment is deteriorated, or the process parameters such as the casting speed are changed, the stability of the entire steel preform continuous casting process and the control accuracy of the molding liquid surface are disturbed. The electromechanical maintenance personnel of the production line must spend more manpower to maintain the equipment in the best production state, otherwise it will produce poor quality steel embryos. However, deterioration of equipment is unavoidable, and frequent replacement of equipment causes an increase in production costs. Furthermore, the operator must adjust the process parameters according to different products, and the conventional linear controller uses only a fixed set of controller parameters, so it cannot meet the high precision and high stability requirements of the production line.
因此，有必要提供一創新且富有進步性之金屬鑄造製程之模液面控制系統及其控制方法，以解決上述問題。Therefore, it is necessary to provide an innovative and progressive metal casting process mold level control system and its control method to solve the above problems.
本發明提供一種金屬鑄造製程之模液面控制方法，其中該模液係經一閥門裝置進入至少一鑄模中，該模液面控制方法包括：(a)設定一目標液位值；(b)取得該模液面之一 實際液位值、該閥門裝置之一實際開度值及至少一製程參數；(c)根據該目標液位值及該實際液位值計算一液位誤差值，且根據該液位誤差值及該製程參數產生一控制器參數及計算一補償增益值；(d)根據該液位誤差值、該實際開度值及該控制器參數計算一目標開度值；(e)根據該目標開度值及該補償增益值計算一補償目標開度值；及(f)根據該補償目標開度值及該實際開度值調控該閥門裝置之操作開度。The invention provides a mold surface control method for a metal casting process, wherein the mold liquid is introduced into at least one mold through a valve device, and the mold level control method comprises: (a) setting a target liquid level value; (b) Obtain one of the mold levels The actual liquid level value, the actual opening value of the valve device and the at least one process parameter; (c) calculating a liquid level error value according to the target liquid level value and the actual liquid level value, and according to the liquid level error value and The process parameter generates a controller parameter and calculates a compensation gain value; (d) calculates a target opening value according to the liquid level error value, the actual opening value and the controller parameter; (e) according to the target opening degree And a value of the compensation gain value for calculating a compensation target opening degree; and (f) adjusting an operation opening degree of the valve device according to the compensation target opening degree value and the actual opening degree value.
本發明另提供一種金屬鑄造製程之模液面控制系統，其中該模液係經一閥門裝置進入至少一鑄模中，該模液面控制系統包括：一液位感測器、一開度感測器、至少一製程參數擷取單元、一控制演算模組、一模液面控制器、一運算單元、一伺服控制器及一開度控制器。該液位感測器用以取得該鑄模中之模液之一實際液位值。該開度感測器用以取得該閥門裝置之一實際開度值。該製程參數擷取單元用以取得至少一製程參數。該控制演算模組根據一設定之目標液位值及該實際液位值計算一液位誤差值，且根據該液位誤差值及該製程參數產生一控制器參數及計算一補償增益值。該模液面控制器根據該液位誤差值、該控制器參數及該實際開度值計算一目標開度值。該運算單元根據該目標開度值、該補償增益值及該實際開度值，以產生一伺服控制參數。該伺服控制器根據該伺服控制參數而作動。該開度控制器連接該伺服控制器，該伺服控制器驅動該開度控制器，以調控該閥門裝置之操作開度。The invention further provides a mold surface control system for a metal casting process, wherein the mold liquid is introduced into at least one mold through a valve device, the mold level control system comprises: a liquid level sensor, an opening sensing , at least one process parameter extraction unit, a control calculation module, a mold liquid level controller, an arithmetic unit, a servo controller and an opening controller. The liquid level sensor is used to obtain an actual liquid level value of one of the molding liquids in the mold. The opening sensor is used to obtain an actual opening value of one of the valve devices. The process parameter extraction unit is configured to obtain at least one process parameter. The control calculation module calculates a liquid level error value according to a set target liquid level value and the actual liquid level value, and generates a controller parameter and calculates a compensation gain value according to the liquid level error value and the process parameter. The mold level controller calculates a target opening value based on the liquid level error value, the controller parameter, and the actual opening value. The operation unit generates a servo control parameter according to the target opening degree value, the compensation gain value and the actual opening degree value. The servo controller operates in accordance with the servo control parameters. The opening controller is coupled to the servo controller, and the servo controller drives the opening controller to regulate an operating opening of the valve device.
本發明之金屬鑄造製程之模液面控制系統及其控制方法，其可自動根據金屬鑄造製程中之環境因素改變及設備狀況變化(該目標液位值、該實際液位值及該製程參數)，以即時調控該閥門裝置之操作開度，以精準地調控該模液之該實際液位並有效地維持液位穩定性。The mold liquid surface control system and the control method thereof for the metal casting process of the invention can automatically change according to environmental factors in the metal casting process and the condition of the equipment (the target liquid level value, the actual liquid level value and the process parameter) In order to instantly control the operating opening of the valve device, the actual liquid level of the molding liquid can be precisely adjusted and the liquid level stability can be effectively maintained.
另外，本發明之金屬鑄造製程之模液面控制系統及其控制方法所達成之模液面控制精確度遠高於傳統或線性控制器所達成之模液面控制精確度。因此，本發明之金屬鑄造製程之模液面控制系統及其控制方法可防止因液位上下振盪而發生爆湯等意外，並且可有效地提升金屬鑄造製程之穩定性，以及提升產品之品質及品級。In addition, the mold surface control system of the metal casting process of the present invention and the control method thereof achieve a mold surface control accuracy much higher than that of a conventional mold controller. Therefore, the mold surface control system and the control method thereof for the metal casting process of the present invention can prevent accidents such as bursting due to fluctuation of the liquid level, and can effectively improve the stability of the metal casting process and improve the quality of the product and grade.
再者，本發明之金屬鑄造製程之模液面控制系統及其控制方法，可有效地降低機電維護人員經常性更換設備的頻率以及生產成本。Furthermore, the mold surface control system and the control method thereof for the metal casting process of the invention can effectively reduce the frequency and production cost of the frequent replacement of the equipment by the electromechanical maintenance personnel.
圖3顯示本發明金屬鑄造製程之模液面控制系統之方塊示意圖。該模液面控制系統2可依製程之需求，選擇性地應用於一鋼胚製程、鋁胚製程、合金製程或連鑄製程。圖4顯示一連鑄機之示意圖。該連鑄機3包括至少一鑄模31、一模液分配單元32、一閥門裝置33及一盛液單元34，該模液分配單元32設置於該閥門裝置33與該盛液單元34之間，該閥門裝置33連接該鑄模31，模液35由該盛液單元34經該模液分配單元32及該閥門裝置33進入該鑄模31。在本實施例中，該閥門裝置33係為一浸入式鑄嘴，該浸入式鑄嘴具 有一滑動閥門機構、一上固定板及一下固定板。該浸入式鑄嘴之結構已於先前技術中敘述(圖2)，在此不再加以贅述。Figure 3 is a block diagram showing the mold level control system of the metal casting process of the present invention. The mold level control system 2 can be selectively applied to a steel blank process, an aluminum blank process, an alloy process or a continuous casting process according to the requirements of the process. Figure 4 shows a schematic view of a continuous casting machine. The continuous casting machine 3 includes at least one mold 31, a molding liquid distribution unit 32, a valve device 33 and a liquid receiving unit 34. The molding liquid distribution unit 32 is disposed between the valve device 33 and the liquid holding unit 34. The valve device 33 is connected to the mold 31, and the molding liquid 35 enters the mold 31 from the liquid receiving unit 34 via the molding liquid dispensing unit 32 and the valve device 33. In the embodiment, the valve device 33 is an immersion nozzle, and the immersion nozzle has There is a sliding valve mechanism, an upper fixing plate and a lower fixing plate. The structure of the immersion nozzle has been described in the prior art (Fig. 2) and will not be described again.
配合參考圖3及圖4，該模液面控制系統2包括：一液位感測器21、一開度感測器22、至少一製程參數擷取單元23、一控制演算模組24、一模液面控制器25、一運算單元26、一伺服控制器27及一開度控制器28。該液位感測器21用以取得該鑄模31中之模液35之一實際液位值。該開度感測器22用以取得該閥門裝置33之一實際開度值。Referring to FIG. 3 and FIG. 4, the mold level control system 2 includes: a liquid level sensor 21, an opening degree sensor 22, at least one process parameter extraction unit 23, a control calculation module 24, and a The mold level controller 25, an arithmetic unit 26, a servo controller 27, and an opening degree controller 28. The liquid level sensor 21 is used to obtain an actual liquid level value of one of the molding liquids 35 in the mold 31. The opening sensor 22 is configured to obtain an actual opening value of the valve device 33.
該製程參數擷取單元23用以取得至少一製程參數。較佳地，該製程參數包括模液之重量值、鑄模之尺寸、模液澆鑄速度、模液黏滯係數及金屬種類至少其中之一。該製程參數擷取單元23可包括一重量感測器、一鑄模尺寸量測單元、一模液澆鑄速度感測器及一模液黏滯係數偵測器至少其中之一。在本實施例中，該製程參數擷取單元23包括一重量感測器231及一模液澆鑄速度感測器232，用以分別取得模液35之重量值及模液澆鑄速度，但僅係以該等製程參數為例說明，並不為限定該等製程參數。其中，該模液澆鑄速度係可經由模液35冷卻固化後通過該連鑄機3之軸輪速度測得，但不限定利用軸輪速度測得該模液澆鑄速度。The process parameter capturing unit 23 is configured to obtain at least one process parameter. Preferably, the process parameters include at least one of a weight value of the molding liquid, a size of the mold, a molding liquid casting speed, a mold viscosity coefficient, and a metal type. The process parameter capturing unit 23 may include at least one of a weight sensor, a mold size measuring unit, a molding liquid casting speed sensor, and a molding liquid viscosity coefficient detector. In the embodiment, the process parameter extraction unit 23 includes a weight sensor 231 and a molding liquid casting speed sensor 232 for respectively obtaining the weight value of the molding liquid 35 and the molding liquid casting speed, but only Taking these process parameters as an example, it is not intended to limit the process parameters. Wherein, the molding liquid casting speed can be measured by the shaft wheel speed of the continuous casting machine 3 after being cooled and solidified by the molding liquid 35, but the molding liquid casting speed is not limited by the shaft wheel speed.
該控制演算模組24接受一設定之目標液位值(可由一操作人員設定)、該實際液位值及該製程參數，根據該目標液位值及該實際液位值計算一液位誤差值，且根據該液位誤差值及該製程參數產生一控制器參數及計算一補償增益 值。在本實施例中，該控制演算模組24係包括一第一加法器241及一控制演算單元242。該第一加法器241根據該目標液位值及該實際液位值，以計算該液位誤差值。該控制演算單元242根據該液位誤差值及該製程參數產生該控制器參數及計算該補償增益值。The control calculation module 24 accepts a set target liquid level value (which can be set by an operator), the actual liquid level value and the process parameter, and calculates a liquid level error value according to the target liquid level value and the actual liquid level value. And generating a controller parameter and calculating a compensation gain according to the liquid level error value and the process parameter value. In the embodiment, the control calculation module 24 includes a first adder 241 and a control calculation unit 242. The first adder 241 calculates the liquid level error value based on the target liquid level value and the actual liquid level value. The control calculation unit 242 generates the controller parameter and calculates the compensation gain value according to the liquid level error value and the process parameter.
該模液面控制器25根據該液位誤差值、該控制器參數及該實際開度值計算一目標開度值。該運算單元26根據該目標開度值、該補償增益值及該實際開度值，以產生一伺服控制參數。在本實施例中，該運算單元26係包括一乘法器261及一第二加法器262，該乘法器261根據該目標開度值及該補償增益值，計算一補償目標開度值，該第二加法器262根據該補償目標開度值及該實際開度值，以計算該伺服控制參數。The mold level controller 25 calculates a target opening value based on the liquid level error value, the controller parameter, and the actual opening value. The operation unit 26 generates a servo control parameter according to the target opening degree value, the compensation gain value and the actual opening degree value. In the embodiment, the operation unit 26 includes a multiplier 261 and a second adder 262. The multiplier 261 calculates a compensation target opening value according to the target opening value and the compensation gain value. The two adder 262 calculates the servo control parameter based on the compensation target opening value and the actual opening value.
該伺服控制器27根據該伺服控制參數而作動，該開度控制器28連接該伺服控制器27，該伺服控制器27驅動該開度控制器28，以調控該閥門裝置33之操作開度。較佳地，該開度控制器28係為一壓力缸裝置，例如：油壓缸裝置或氣壓缸裝置。在本實施例中，該伺服控制器27根據該伺服控制參數而作動，以驅動該開度控制器28，再由該開度控制器28調控該浸入式鑄嘴之滑動閥門機構之移動方向，以調控該閥門裝置33之該操作開度，以精準地控制該鑄模31中該模液35之該實際液位。The servo controller 27 is actuated according to the servo control parameter, and the opening controller 28 is coupled to the servo controller 27, and the servo controller 27 drives the opening controller 28 to regulate the operating opening of the valve device 33. Preferably, the opening controller 28 is a cylinder device such as a hydraulic cylinder device or a pneumatic cylinder device. In this embodiment, the servo controller 27 is actuated according to the servo control parameter to drive the opening degree controller 28, and the opening degree controller 28 regulates the moving direction of the sliding valve mechanism of the immersed casting nozzle. The operating opening of the valve device 33 is adjusted to precisely control the actual liquid level of the molding liquid 35 in the mold 31.
圖5顯示本發明金屬鑄造製程之模液面控制方法之流程圖。其中，該控制方法係可應用於一鋼胚製程、鋁胚製 程、合金製程或連鑄製程。配合參考圖3至圖5，首先，參考步驟S51，設定一目標液位值。其中，該目標液位值係可根據鑄造金屬產品所需之規格而設定。Figure 5 is a flow chart showing the method of controlling the liquid level of the metal casting process of the present invention. Among them, the control method can be applied to a steel embryo process, aluminum embryo system Process, alloy process or continuous casting process. Referring to FIG. 3 to FIG. 5, first, with reference to step S51, a target liquid level value is set. Among them, the target liquid level value can be set according to the specifications required for the cast metal product.
參考步驟S52，取得該鑄模31中之該模液面之一實際液位值、該閥門裝置33之一實際開度值及至少一製程參數。其中，該製程參數包括模液之重量值、鑄模之尺寸、模液澆鑄速度、模液黏滯係數及金屬種類至少其中之一。在本實施例中，其係利用該液位感測器21取得該實際液位值；利用該開度感測器22取得該實際開度值；利用該重量感測器231取得該模液35之重量值；及利用該模液澆鑄速度感測器232取得該模液澆鑄速度。其中，在步驟S52中係取得該模液分配單元32之該模液35之重量值，而該模液澆鑄速度係經由模液35冷卻固化後通過連鑄機3之軸輪速度測得。Referring to step S52, an actual liquid level value of the mold liquid level in the mold 31, an actual opening degree value of the valve device 33, and at least one process parameter are obtained. Wherein, the process parameters include at least one of a weight value of the molding liquid, a size of the mold, a molding liquid casting speed, a mold viscosity coefficient, and a metal type. In the embodiment, the liquid level sensor 21 is used to obtain the actual liquid level value; the opening degree sensor 22 is used to obtain the actual opening value; and the mold sensor 231 is used to obtain the molding liquid 35. The weight value; and the mold casting speed sensor 232 is used to obtain the molding liquid casting speed. In the step S52, the weight value of the molding liquid 35 of the molding liquid distribution unit 32 is obtained, and the molding liquid casting speed is measured by the shaft speed of the continuous casting machine 3 after being cooled and solidified by the molding liquid 35.
另外，該模液黏滯係數係可利用一模液黏滯係數偵測器取得，以及，於鑄造製程進行前，係可利用一鑄模尺寸量測單元取得該鑄模尺寸，且金屬種類係可根據鑄造金屬產品之材質預先得知。In addition, the mold viscosity coefficient can be obtained by using a mold liquid viscosity coefficient detector, and before the casting process, the mold size can be obtained by using a mold size measuring unit, and the metal type can be The material of the cast metal product is known in advance.
參考步驟S53，根據該目標液位值及該實際液位值計算一液位誤差值，且根據該液位誤差值及該製程參數產生一控制器參數及計算一補償增益值。在本實施例中，係利用該第一加法器241根據該目標液位值及該實際液位值，以計算該液位誤差值。較佳地，在步驟S53中係同時根據該液位誤差值、模液之重量值、鑄模之尺寸、模液澆鑄速 度、模液黏滯係數及金屬種類，以產生該控制器參數及計算該補償增益值。其中，在該模液面控制方法中，考慮之參數越多，即可更精準地控制該鑄模31中之該模液35之該實際液位。Referring to step S53, a liquid level error value is calculated according to the target liquid level value and the actual liquid level value, and a controller parameter is generated according to the liquid level error value and the process parameter, and a compensation gain value is calculated. In this embodiment, the first adder 241 is used to calculate the liquid level error value according to the target liquid level value and the actual liquid level value. Preferably, in step S53, the liquid level error value, the weight value of the molding liquid, the size of the mold, and the molding liquid casting speed are simultaneously determined. Degree, mold viscosity coefficient and metal type to generate the controller parameters and calculate the compensation gain value. Among them, in the mold level control method, the more the parameters are considered, the more precise control of the actual liquid level of the mold liquid 35 in the mold 31 can be achieved.
參考步驟S54，根據該液位誤差值、該實際開度值及該控制器參數計算一目標開度值。參考步驟S55，根據該目標開度值及該補償增益值計算一補償目標開度值。參考步驟S56，根據該補償目標開度值及該實際開度值調控該閥門裝置33之操作開度。在本實施例中，係利用該開度控制器28調控該操作開度，其中，該伺服控制器27係根據該伺服控制參數而作動，以驅動該開度控制器28，再由該開度控制器28調控該閥門裝置33之該滑動閥門機構之移動方向，以調控該閥門裝置33之該操作開度，以精準地控制該鑄模31中之該模液35之該實際液位。Referring to step S54, a target opening degree value is calculated according to the liquid level error value, the actual opening degree value, and the controller parameter. Referring to step S55, a compensation target opening degree value is calculated according to the target opening degree value and the compensation gain value. Referring to step S56, the operating opening degree of the valve device 33 is adjusted according to the compensation target opening degree value and the actual opening degree value. In the embodiment, the opening degree controller 28 is used to adjust the operation opening degree, wherein the servo controller 27 is actuated according to the servo control parameter to drive the opening degree controller 28, and then the opening degree is The controller 28 regulates the moving direction of the sliding valve mechanism of the valve device 33 to regulate the operating opening of the valve device 33 to precisely control the actual liquid level of the molding liquid 35 in the mold 31.
本發明之金屬鑄造製程之模液面控制系統2及其控制方法，其可自動根據金屬鑄造製程中之環境因素改變及設備狀況變化(該目標液位值、該實際液位值及該製程參數)，以即時調控該閥門裝置33之操作開度，以精準地調控該鑄模31中之該模液35之該實際液位並有效地維持液位穩定性。The mold surface control system 2 and the control method thereof for the metal casting process of the invention can automatically change according to environmental factors in the metal casting process and the condition of the equipment (the target liquid level value, the actual liquid level value and the process parameter) In order to instantly adjust the operating opening of the valve device 33, the actual liquid level of the molding liquid 35 in the mold 31 is precisely adjusted and the liquid level stability is effectively maintained.
另外，本發明之金屬鑄造製程之模液面控制系統2及其控制方法所達成之模液面控制精確度遠高於傳統或線性控制器所達成之模液面控制精確度。因此，本發明之金屬鑄造製程之模液面控制系統2及其控制方法可防止因液位上 下振盪而發生爆湯等意外，並且可有效地提升金屬鑄造製程之穩定性，以及提升產品之品質及品級。In addition, the mold surface control system 2 of the metal casting process of the present invention and the control method thereof achieve a mold liquid level control accuracy much higher than that of a conventional liquid crystal control. Therefore, the mold surface control system 2 of the metal casting process of the present invention and the control method thereof can be prevented from being on the liquid level Under the oscillating, accidents such as blasting occur, and the stability of the metal casting process can be effectively improved, and the quality and grade of the product can be improved.
再者，本發明之金屬鑄造製程之模液面控制系統2及其控制方法，可有效地降低機電維護人員經常性更換設備的頻率以及生產成本。Furthermore, the mold surface control system 2 and the control method thereof for the metal casting process of the present invention can effectively reduce the frequency and production cost of the frequent replacement of equipment by the electromechanical maintenance personnel.
上述實施例僅為說明本發明之原理及其功效，並非限制本發明。因此習於此技術之人士對上述實施例進行修改及變化仍不脫本發明之精神。本發明之權利範圍應如後述之申請專利範圍所列。The above embodiments are merely illustrative of the principles and effects of the invention and are not intended to limit the invention. Therefore, those skilled in the art can make modifications and changes to the above embodiments without departing from the spirit of the invention. The scope of the invention should be as set forth in the appended claims.
2‧‧‧本發明之金屬鑄造製程之模液面控制系統2‧‧‧Model liquid level control system for metal casting process of the present invention
3‧‧‧連鑄機3‧‧‧Continuous casting machine
11‧‧‧鋼液11‧‧‧Steel
12‧‧‧盛鋼桶12‧‧‧Steel drum
13‧‧‧鋼液分配器13‧‧‧Steel Liquid Dispenser
14‧‧‧浸入式鑄嘴14‧‧‧Immersion nozzle
15‧‧‧鑄模15‧‧‧Molding
16‧‧‧鑄道16‧‧‧ casting road
17‧‧‧鋼條17‧‧‧Steel bars
18‧‧‧焰切裝置18‧‧‧Flame cutting device
21‧‧‧液位感測器21‧‧‧ Liquid level sensor
22‧‧‧開度感測器22‧‧‧Opening sensor
23‧‧‧製程參數擷取單元23‧‧‧Process parameter acquisition unit
24‧‧‧控制演算模組24‧‧‧Control calculus module
25‧‧‧模液面控制器25‧‧‧Mold level controller
26‧‧‧運算單元26‧‧‧ arithmetic unit
27‧‧‧伺服控制器27‧‧‧Servo Controller
28‧‧‧開度控制器28‧‧‧ opening controller
31‧‧‧鑄模31‧‧‧ mould
32‧‧‧模液分配單元32‧‧‧Mold fluid distribution unit
33‧‧‧閥門裝置33‧‧‧Valve device
34‧‧‧盛液單元34‧‧‧ Liquid unit
35‧‧‧模液35‧‧‧Mold fluid
141‧‧‧滑動閥門141‧‧‧Sliding valve
142‧‧‧上固定板142‧‧‧Upper fixing plate
143‧‧‧下固定板143‧‧‧ fixed plate
171‧‧‧鋼胚171‧‧‧ steel embryo
231‧‧‧重量感測器231‧‧‧ Weight Sensor
232‧‧‧模液澆鑄速度感測器232‧‧‧Mold fluid casting speed sensor
241‧‧‧第一加法器241‧‧‧First Adder
242‧‧‧控制演算單元242‧‧‧Control calculation unit
261‧‧‧乘法器261‧‧‧Multiplier
262‧‧‧第二加法器262‧‧‧second adder
圖1顯示習知鋼胚連鑄製程之示意圖；圖2顯示習知浸入式鑄嘴之示意圖；圖3顯示本發明金屬鑄造製程之模液面控制系統之方塊示意圖；圖4顯示一連鑄機之示意圖；及圖5顯示本發明金屬鑄造製程之模液面控制方法之流程圖。1 shows a schematic view of a conventional steelmaking continuous casting process; FIG. 2 shows a schematic view of a conventional immersion casting nozzle; FIG. 3 shows a block diagram of a molding liquid level control system of the metal casting process of the present invention; and FIG. 4 shows a schematic view of a continuous casting machine. And Figure 5 shows a flow chart of the mold level control method of the metal casting process of the present invention.
2‧‧‧本發明之金屬鑄造製程之模液面控制系統2‧‧‧Model liquid level control system for metal casting process of the present invention
21‧‧‧液位感測器21‧‧‧ Liquid level sensor
22‧‧‧開度感測器22‧‧‧Opening sensor
23‧‧‧製程參數擷取單元23‧‧‧Process parameter acquisition unit
24‧‧‧控制演算模組24‧‧‧Control calculus module
25‧‧‧模液面控制器25‧‧‧Mold level controller
26‧‧‧運算單元26‧‧‧ arithmetic unit
27‧‧‧伺服控制器27‧‧‧Servo Controller
28‧‧‧開度控制器28‧‧‧ opening controller
231‧‧‧重量感測器231‧‧‧ Weight Sensor
232‧‧‧模液澆鑄速度感測器232‧‧‧Mold fluid casting speed sensor
241‧‧‧第一加法器241‧‧‧First Adder
242‧‧‧控制演算單元242‧‧‧Control calculation unit
261‧‧‧乘法器261‧‧‧Multiplier
262‧‧‧第二加法器262‧‧‧second adder
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW097136238A TWI462790B (en) | 2008-09-19 | 2008-09-19 | Mold surface control system for metal casting process and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW097136238A TWI462790B (en) | 2008-09-19 | 2008-09-19 | Mold surface control system for metal casting process and its control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201012570A TW201012570A (en) | 2010-04-01 |
| TWI462790B true TWI462790B (en) | 2014-12-01 |
Family
ID=44829050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW097136238A TWI462790B (en) | 2008-09-19 | 2008-09-19 | Mold surface control system for metal casting process and its control method |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI462790B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI868704B (en) * | 2023-05-23 | 2025-01-01 | 中國鋼鐵股份有限公司 | System and method for detecting liquid level fluctuation in mold |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI552816B (en) * | 2014-05-15 | 2016-10-11 | 中國鋼鐵股份有限公司 | Active liquid level control system and control method thereof |
| JP6794268B2 (en) * | 2017-01-05 | 2020-12-02 | 黒崎播磨株式会社 | Sliding nozzle |
| TWI743686B (en) * | 2019-02-19 | 2021-10-21 | 日商Ｊｆｅ鋼鐵股份有限公司 | Control method of continuous casting machine, control device of continuous casting machine, and manufacturing method of cast piece |
| US11890671B2 (en) | 2019-02-19 | 2024-02-06 | Jfe Steel Corporation | Control method for continuous casting machine, control device for continuous casting machine, and manufacturing method for casting |
| TWI699706B (en) * | 2019-12-05 | 2020-07-21 | 中國鋼鐵股份有限公司 | Method for detecting liquid level turbulence of surface image |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57159252A (en) * | 1981-03-27 | 1982-10-01 | Sumitomo Metal Ind Ltd | Controlling method for molten metal level of continuous casting mold |
| JPS5838648A (en) * | 1981-08-28 | 1983-03-07 | Kawasaki Steel Corp | Adding method for oxygen to molten steel during continuous casting |
| JPS5933062A (en) * | 1982-08-19 | 1984-02-22 | Daido Steel Co Ltd | Automatic control method for liquid level of molten steel in the mold in continuous casting |
| US4597048A (en) * | 1983-09-07 | 1986-06-24 | United States Steel Corporation | Digital flow regulation of liquid-level control for a continuous casting mold |
| US4625787A (en) * | 1985-01-22 | 1986-12-02 | National Steel Corporation | Method and apparatus for controlling the level of liquid metal in a continuous casting mold |
| JPS63192545A (en) * | 1987-02-03 | 1988-08-09 | Nkk Corp | Continuous casting mold level control device |
| JPH0811994A (en) * | 1994-07-01 | 1996-01-16 | Mitsubishi Cable Ind Ltd | Apparatus for casting viscous fluid by constant amount |
-
2008
- 2008-09-19 TW TW097136238A patent/TWI462790B/en not_active IP Right Cessation
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57159252A (en) * | 1981-03-27 | 1982-10-01 | Sumitomo Metal Ind Ltd | Controlling method for molten metal level of continuous casting mold |
| JPS5838648A (en) * | 1981-08-28 | 1983-03-07 | Kawasaki Steel Corp | Adding method for oxygen to molten steel during continuous casting |
| JPS5933062A (en) * | 1982-08-19 | 1984-02-22 | Daido Steel Co Ltd | Automatic control method for liquid level of molten steel in the mold in continuous casting |
| US4597048A (en) * | 1983-09-07 | 1986-06-24 | United States Steel Corporation | Digital flow regulation of liquid-level control for a continuous casting mold |
| US4625787A (en) * | 1985-01-22 | 1986-12-02 | National Steel Corporation | Method and apparatus for controlling the level of liquid metal in a continuous casting mold |
| JPS63192545A (en) * | 1987-02-03 | 1988-08-09 | Nkk Corp | Continuous casting mold level control device |
| JPH0811994A (en) * | 1994-07-01 | 1996-01-16 | Mitsubishi Cable Ind Ltd | Apparatus for casting viscous fluid by constant amount |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI868704B (en) * | 2023-05-23 | 2025-01-01 | 中國鋼鐵股份有限公司 | System and method for detecting liquid level fluctuation in mold |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201012570A (en) | 2010-04-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI462790B (en) | Mold surface control system for metal casting process and its control method | |
| CN103998161B (en) | Slab in continuous casting solidify completion status method of estimation and continuous casing | |
| JPS5924901B2 (en) | How to control the cooling efficiency of assembled molds in continuous casting | |
| CN112423911B (en) | Control device and method for continuous casting, and recording medium | |
| US4580614A (en) | Cooling apparatus for horizontal continuous casting of metals and alloys, particularly steels | |
| CN101687252B (en) | Submerged-entry nozzle centring device | |
| CN110062672B (en) | Method and apparatus for conditioning a continuous casting facility | |
| CN102029368A (en) | A method for on-line detection of solid-liquid phase fraction and solidification end in the secondary cooling zone of continuous casting slab | |
| CN1205259A (en) | metal strip casting | |
| US20150000859A1 (en) | Method of and apparatus for controlling molten metal surface in mold of continuous-casting machine and continuous-casting machine including the apparatus | |
| JPH02200362A (en) | Method for predicting and restraining nozzle clogging in continuous casting apparatus | |
| CN105195701A (en) | Method and device for measuring molten steel flow field distribution during continuous casting steel ladle pouring | |
| US8020605B2 (en) | Continuous steel slab caster and methods using same | |
| KR100957949B1 (en) | Continuous casting method by calculating tundish molten steel level | |
| CN205200520U (en) | Automatic the gating system of rising pouring formula casting machine | |
| US20080179036A1 (en) | Continuous steel slab caster and methods using same | |
| KR20090056055A (en) | Slab temperature control device and method in continuous casting process | |
| JP6528756B2 (en) | Hot water level control device and hot water level control method | |
| JPH02220751A (en) | Casting control device and control method for continuous casting machine | |
| RU77810U1 (en) | METAL LEVEL CONTROL SYSTEM IN THE CRYSTALIZER | |
| JP2016215236A (en) | Breakout prediction method, breakout prevention method, solidified shell thickness measurement method, breakout prediction device and breakout prevention device in continuous casting | |
| CN202779679U (en) | Pouring device and pouring ladle | |
| JP6160578B2 (en) | Method for determining surface cracks in continuous cast pieces | |
| CN102497944A (en) | Method and device for casting metal melt in a continuous casting machine | |
| JP2004276050A (en) | How to start continuous casting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Annulment or lapse of patent due to non-payment of fees |