TWI763572B

TWI763572B - Method and system for rolling a steel slab having a wedge shape

Info

Publication number: TWI763572B
Application number: TW110128310A
Authority: TW
Inventors: 余青峰; 葉彥良; 程紹桓; 李昆遠; 林筵進
Original assignee: 中國鋼鐵股份有限公司
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2022-05-01
Also published as: TW202306663A

Abstract

A method and a system for rolling a steel slab having a wedge shape are provided. The system includes a vertical roller, a steel slab width measuring device and a rolling control system. The rolling control system is configured to perform the method for rolling the steel slab having a wedge shape. The method includes: obtaining a steel slab shape data; determining if the steel slab is in a bad wedge shape; determining if a difference between a rolled target value and a slab width value is greater than a threshold value; modifying the rolled target value when the steel slab is in the bad wedge shape and the difference between the rolled target value and the slab width value is not greater than the threshold value, in which the rolled target value is smaller than the width value of the steel slab, and a difference therebetween is greater than the threshold value; and performing an edge rolling process by using grooved rolls of the vertical roller in accordance with the .

Description

楔形鋼胚之軋延方法與軋延系統Rolling method and rolling system of wedge-shaped billets

本發明是有關於一種楔形鋼胚之軋延方法與軋延系統。 The present invention relates to a rolling method and rolling system for wedge-shaped steel billets.

熱軋係以扁鋼胚為原料，先以高溫加熱軟化，再藉由粗軋機以及精軋機軋延成鋼帶。然後，再經過噴水冷卻後，以盤捲形式產出。然扁鋼胚形貌雖為對稱長方體，但若因為煉鋼連鑄過程中受冷卻或設備影響，而產生形狀變異(楔形)，則可能使得後續軋延中心偏移，導致撞擊和/或毀損熱軋設備的風險。 The hot rolling system uses flat steel billets as raw materials, which are first heated and softened at high temperature, and then rolled into steel strips by rough rolling mills and finishing mills. Then, after cooling by spraying water, it is produced in the form of coils. Although the shape of the flat steel billet is a symmetrical cuboid, if the shape variation (wedge) occurs due to cooling or equipment during the steelmaking and continuous casting process, the subsequent rolling center may be offset, resulting in impact and/or damage. Risk of hot rolling equipment.

為了解決上述問題，本發明之實施例提出一種楔形鋼胚之軋延方法與軋延系統，其可減少因軋延中心偏移而導致撞擊和/或毀損熱軋設備的風險。 In order to solve the above problems, embodiments of the present invention provide a rolling method and rolling system for wedge-shaped billets, which can reduce the risk of impacting and/or damaging hot rolling equipment due to the offset of rolling center.

根據本發明之一實施例，上述楔形鋼胚之軋延方法包含：獲得一鋼胚外形資料，其中此鋼胚外形資料包含鋼胚寬度值；根據鋼胚外形資料來判斷鋼胚是否屬於楔形不良；當鋼胚是屬於楔形不良時，判斷鋼胚之一滾軋後目標寬度值與鋼胚寬度值之差值是否大於大於一裁減量閥值；當鋼胚之滾軋後目標寬度值與鋼胚寬度值之差值未大於裁減量閥值時，修改滾軋後目標寬度值，其中修改後之滾軋後目標寬度值小於鋼胚寬度值，且修改後之滾軋後目標寬度值與鋼胚寬度值之差值大於裁減量閥值；以及根據修改後之滾軋後目標寬度值來對鋼胚進行一裁邊製程，其中此裁邊製程採用槽形裁邊輥。 According to an embodiment of the present invention, the method for rolling a wedge-shaped steel billet includes: obtaining a shape data of a steel billet, wherein the shape data of the steel billet includes steel The width value of the steel billet; according to the shape data of the steel billet, it is judged whether the steel billet belongs to the bad wedge shape; when the billet belongs to the bad wedge shape, it is judged whether the difference between the target width value after rolling and the steel billet width value is greater than one Threshold value of cutting amount; when the difference between the target width value after rolling of the billet and the width value of the billet is not greater than the cutting amount threshold, modify the target width value after rolling, and the target width after rolling after modification is less than The width value of the steel billet, and the difference between the modified target width value after rolling and the steel billet width value is greater than the cutting amount threshold; and according to the modified target width value after rolling, a trimming process is performed on the steel billet, Among them, this trimming process adopts grooved trimming rollers.

在一些實施例中，上述之楔形鋼胚之軋延方法更包含利用一邊導器來對裁邊後之鋼胚進行一側邊矯正製程，其中此側邊矯正製程係對裁邊後之鋼胚施加夾持壓力。 In some embodiments, the above-mentioned rolling method of wedge-shaped steel billet further includes using a side guide to perform a side edge correction process on the edge-cut steel billet, wherein the side edge correction process is on the edge-cut steel billet. Apply clamping pressure.

在一些實施例中，夾持壓力大於4.5噸。 In some embodiments, the clamping pressure is greater than 4.5 tons.

在一些實施例中，上述之楔形鋼胚之軋延方法更包含：對該鋼胚進行一水平軋延製程。 In some embodiments, the rolling method for the wedge-shaped steel billet further comprises: performing a horizontal rolling process on the steel billet.

在一些實施例中，前述之水平軋延製程包含：根據水平軋輥之一軋輥長度以及前述之鋼胚外形資料來計算一軋輥水平傾斜量；以及根據該軋輥水平傾斜量來調整一水平軋輥之傾斜量，以利用該水平軋輥來對該鋼胚進行軋延。 In some embodiments, the aforementioned horizontal rolling process includes: calculating a horizontal inclination amount of a roll according to a roll length of a horizontal roll and the aforementioned steel billet profile data; and adjusting the inclination of a horizontal roll according to the horizontal inclination amount of the roll amount to roll the billet with the horizontal rolls.

根據本發明之一實施例，上述楔形鋼胚之軋延系統包含：垂直軋機、鋼胚寬度量測裝置以及軋延控制系統。垂直軋機包含槽形裁邊輥。軋延控制系統用以：鋼胚外形資料，其中此鋼胚外形資料包含鋼胚寬度值；根據鋼胚外形資料來判斷鋼胚是否屬於楔形不良；當鋼胚是屬於楔形不良時，判斷鋼胚之一滾軋後目標寬度值與鋼胚寬度值之差值是否一裁減量閥值；當鋼胚之滾軋後目標寬度值與鋼胚寬度值之差值未大於裁減量閥值時，修改滾軋後目標寬度值，其中修改後之滾軋後目標寬度值小於鋼胚寬度值，且修改後之滾軋後目標寬度值與鋼胚寬度值之差值大於裁減量閥值；以及根據修改後之滾軋後目標寬度值來對鋼胚進行一裁邊製程，並利用鋼胚寬度量測裝置來量測鋼胚之寬度，其中此裁邊製程採用槽形裁邊輥。 According to an embodiment of the present invention, the rolling system for the wedge-shaped billet includes: a vertical rolling mill, a billet width measuring device, and a rolling control system. Vertical mills contain grooved trimming rolls. The rolling control system is used for: the shape data of the steel billet, wherein the shape data of the steel billet includes the width value of the steel billet; The shape data is used to judge whether the steel billet is wedge-shaped bad; when the steel billet is wedge-shaped bad, it is judged whether the difference between the target width value after rolling and the steel billet width value is a reduction threshold; When the difference between the target width value after rolling and the width value of the billet is not greater than the cutting amount threshold, modify the target width value after rolling, wherein the target width value after rolling is less than the billet width value, and the modified The difference between the target width value after rolling and the width value of the steel billet is greater than the cutting amount threshold; and according to the modified target width value after rolling rolling, a trimming process is performed on the billet, and a billet width measuring device is used to measure the width of the billet. Measure the width of the steel billet, in which this trimming process uses a grooved trimming roller.

在一些實施例中，前述之楔形鋼胚之軋延系統更包含一邊導器，用以對裁邊後之該鋼胚進行一側邊矯正製程，其中該側邊矯正製程係對裁邊後之該鋼胚施加一夾持壓力。 In some embodiments, the aforementioned wedge-shaped steel billet rolling system further includes a side guide for performing a side edge correction process on the steel billet after edge trimming, wherein the side edge correction process is a side edge correction process for the edge trimming process. The billet applies a clamping pressure.

在一些實施例中，前述之楔形鋼胚之軋延系統更包含一水平軋機，其中前述之軋延控制系統更用以：控制水平軋機來對鋼胚進行一水平軋延製程。 In some embodiments, the aforementioned wedge-shaped steel billet rolling system further includes a horizontal rolling mill, wherein the aforementioned rolling control system is further configured to: control the horizontal rolling mill to perform a horizontal rolling process on the steel billet.

在一些實施例中，水平軋延製程包含：根據水平軋輥之一軋輥長度以及鋼胚外形資料來計算一軋輥水平傾斜量；以及根據軋輥水平傾斜量來調整水平軋機之一水平軋輥之傾斜量，以利用水平軋輥來對鋼胚進行軋延。 In some embodiments, the horizontal rolling process includes: calculating a horizontal inclination amount of a roll according to the roll length of one of the horizontal rolls and the profile data of the steel billet; and adjusting the inclination amount of a horizontal roll of the horizontal rolling mill according to the horizontal inclination amount of the roll, The steel billet is rolled with horizontal rolls.

為讓本發明的上述特徵和優點能更明顯易懂，下文特舉實施例，並配合所附圖式作詳細說明如下。 In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, the following embodiments are given and described in detail with the accompanying drawings as follows.

100:楔形鋼胚之軋延系統 100: Rolling system for wedge-shaped billets

110:軋延產線 110: Rolling line

112:第一軋機站 112: The first rolling mill station

112a:垂直軋機 112a: Vertical Mill

112b:水平軋機 112b: Horizontal Mill

112c:鋼胚寬度量測裝置 112c: Steel billet width measuring device

114:第二軋機站 114: Second Mill Station

114a:垂直軋機 114a: Vertical Mill

114b:水平軋機 114b: Horizontal Mill

114c:鋼胚寬度量測裝置 114c: Steel billet width measuring device

116:輸送裝置 116: Conveyor

118:鋼胚寬度量測裝置 118: Steel billet width measuring device

120:軋延控制系統 120: Rolling control system

210:槽形裁邊輥 210: Grooved edge trimming roller

212:溝槽部 212: groove part

220:鋼胚 220: Steel Billet

222:側彎鋼胚部分 222: Side bending billet part

300:楔形鋼胚之軋延方法 300: Rolling method of wedge-shaped billets

310~350:步驟 310~350: Steps

410:水平軋輥 410: Horizontal roll

510:邊導器 510: Edge guide

dS1:傾斜量 dS1: Slope amount

H1、H2:高度 H1, H2: height

W:鋼胚寬度 W: steel billet width

△t:高度差 △t: height difference

圖1係繪示根據本發明實施例之楔形鋼胚之軋延系統。 FIG. 1 illustrates a rolling system for a wedge-shaped billet according to an embodiment of the present invention.

圖2係繪示根據本發明實施例之槽形裁邊輥對鋼胚滾軋的示意圖。 FIG. 2 is a schematic diagram illustrating the rolling of a billet by a groove-shaped trimming roller according to an embodiment of the present invention.

圖3係繪示根據本發明實施例之楔形鋼胚之軋延方法的流程示意圖。 FIG. 3 is a schematic flowchart illustrating a rolling method of a wedge-shaped steel billet according to an embodiment of the present invention.

圖4係繪示根據本發明實施例之水平軋輥與鋼胚示意圖。 4 is a schematic diagram illustrating a horizontal roll and a steel billet according to an embodiment of the present invention.

圖5係繪示根據本發明實施例之邊導器的示意圖。 5 is a schematic diagram illustrating an edge guide according to an embodiment of the present invention.

下文是以實施方式配合附圖作詳細說明，但所提供的實施方式並非用以限制本發明所涵蓋的範圍，而結構運作的描述非用以限制其執行的順序，任何由元件重新組合的結構，所產生具有均等功效的裝置，皆為本發明所涵蓋的範圍。此外，圖式僅以說明為目的，並未依照原尺寸作圖。 The following is a detailed description of the embodiments in conjunction with the accompanying drawings, but the provided embodiments are not intended to limit the scope of the present invention, and the description of the structure operation is not intended to limit the order of its execution. Any structure that is recombined by elements , the resulting devices with equal efficacy are all within the scope of the present invention. In addition, the drawings are for illustrative purposes only and are not drawn in full scale.

關於本文中所使用之『第一』、『第二』、...等，並非特別指次序或順位的意思，其僅為了區別以相同技術用語描述的元件或操作。 The terms "first", "second", .

請參照圖1，其係繪示根據本發明實施例之楔形鋼胚之軋延系統100，其包含軋延產線110以及軋延控制系統120。軋延產線110係用以接收鋼胚，並將其軋延成鋼帶。軋延控制系統120係電性連接至軋延產線110，以控制軋延產線110的生產過程。例如，在本實施例中，軋延產線110包含第一軋機站112、第二軋機站114、輸送裝置116以及鋼胚寬度量測裝置118，而軋延控制系統120係用以控制第一軋機站112、第二軋機站114、輸送裝置116的操作來對輸送裝置116上的鋼胚(未繪示)進行軋延。在一實施例中，楔形鋼胚之軋延系統100可接收煉鋼廠所提供的鋼胚外形資料。煉鋼廠可使用，例如中華民國專利號第1251661號之技術來獲得鋼胚的外形資料。 Please refer to FIG. 1 , which illustrates a rolling system 100 for wedge-shaped billets according to an embodiment of the present invention, which includes a rolling production line 110 and a rolling control system 120 . Rolling line 110 is used to receive billets and roll them into strips. The rolling control system 120 is electrically connected to the rolling line 110 to control The production process of the rolling extension line 110 . For example, in this embodiment, the rolling production line 110 includes a first rolling mill station 112, a second rolling mill station 114, a conveying device 116 and a billet width measuring device 118, and the rolling control system 120 is used to control the first rolling mill station 112. The operation of the mill station 112 , the second mill station 114 , and the conveying device 116 is to roll the billets (not shown) on the conveying device 116 . In one embodiment, the wedge-shaped billet rolling system 100 can receive billet profile data provided by a steel mill. Steel mills can use, for example, the technology of ROC Patent No. 1251661 to obtain the shape data of the steel billet.

第一軋機站112包含垂直軋機112a、水平軋機112b以及鋼胚寬度量測裝置112c。垂直軋機112a包含直立式的槽形裁邊輥，用以對鋼胚進行裁邊製程。裁邊製程係透過直立式的槽形裁邊輥來對鋼胚的側邊進行滾軋，以調整鋼胚的寬度，如圖2所示。在圖2中，槽形裁邊輥210的溝槽部212係對準鋼胚220的側邊，並對鋼胚的側邊進行滾軋，以達到鋼胚寬度裁減的目的。水平軋機112b係用以對鋼胚進行水平軋延製程，以將鋼胚軋延成帶狀，並控制鋼胚的厚度。鋼胚寬度量測裝置112c係用以量測經過垂直軋機112a與水平軋機112b滾軋後的鋼胚寬度/偏移值，並將其傳送至軋延控制系統120。其中，鋼胚偏移值代表鋼胚在軋延後鋼胚中心偏移的程度。 The first rolling mill station 112 includes a vertical rolling mill 112a, a horizontal rolling mill 112b, and a billet width measuring device 112c. The vertical rolling mill 112a includes vertical groove-shaped trimming rollers for trimming the steel billets. In the trimming process, the side of the steel blank is rolled through a vertical groove-shaped trimming roller to adjust the width of the steel blank, as shown in Figure 2. In FIG. 2 , the groove portion 212 of the groove-shaped trimming roller 210 is aligned with the side edge of the steel blank 220, and the side edge of the steel blank is rolled to achieve the purpose of cutting the width of the steel blank. The horizontal rolling mill 112b is used to perform a horizontal rolling process on the steel billet, so as to roll the steel billet into a strip shape and control the thickness of the steel billet. The billet width measuring device 112c is used to measure the billet width/offset value after rolling by the vertical rolling mill 112a and the horizontal rolling mill 112b, and transmit it to the rolling control system 120. Among them, the offset value of the billet represents the degree of offset of the center of the billet after rolling.

在進行滾軋時，第一軋機站112可對鋼胚進行多次滾軋，而鋼胚寬度量測裝置112c可相應地量測滾軋後鋼胚的寬度/偏移值。例如，鋼胚可往復多次通過第一軋機站112來進行多次滾軋。在本實施例中，鋼胚會往復通過第一軋機站112五次，但本發明之實施例並不受限於此。 During rolling, the first rolling mill station 112 can roll the steel billet multiple times, and the billet width measuring device 112c can measure the width/offset value of the billet after rolling accordingly. For example, the billet may be rolled back and forth through the first rolling mill station 112 multiple times. In this embodiment, the steel billet will reciprocate through The first mill station 112 is five times, but embodiments of the present invention are not so limited.

第二軋機站114包含垂直軋機114a、水平軋機114b以及鋼胚寬度量測裝置114c。垂直軋機114a包含直立式的槽形裁邊輥，用以對鋼胚進行裁邊製程。裁邊製程係透過直立式的槽形裁邊輥來對鋼胚的側邊進行滾軋，以調整鋼胚的寬度。水平軋機114b係用以對鋼胚進行水平軋延製程，以控制鋼胚的厚度。鋼胚寬度量測裝置114c係類似於鋼胚寬度量測裝置112c，用以量測經過垂直軋機114a與水平軋機114b滾軋後的鋼胚寬度/偏移值，以得到對應的鋼胚外形資料，並將其傳送至軋延控制系統120。 The second rolling mill station 114 includes a vertical rolling mill 114a, a horizontal rolling mill 114b, and a billet width measuring device 114c. The vertical rolling mill 114a includes vertical groove-shaped trimming rollers for trimming the steel billets. In the trimming process, the side of the steel blank is rolled through a vertical groove-shaped trimming roller to adjust the width of the steel blank. The horizontal rolling mill 114b is used to perform a horizontal rolling process on the steel billet to control the thickness of the steel billet. The billet width measuring device 114c is similar to the billet width measuring device 112c, and is used to measure the billet width/offset value after rolling by the vertical rolling mill 114a and the horizontal rolling mill 114b, so as to obtain the corresponding billet shape data , and send it to the rolling control system 120 .

在進行滾軋時，第二軋機站114可對鋼胚進行多次滾軋，而鋼胚寬度量測裝置114c可相應地量測滾軋後鋼胚的寬度/偏移值。例如，鋼胚可往復多次通過第二軋機站112來進行多次滾軋。在本實施例中，鋼胚會往復通過第二軋機站114三次，但本發明之實施例並不受限於此。 During rolling, the second rolling mill station 114 can roll the steel billet multiple times, and the billet width measuring device 114c can measure the width/offset value of the billet after rolling accordingly. For example, the billet may be rolled back and forth through the second rolling mill station 112 multiple times. In this embodiment, the steel billet will reciprocate through the second rolling mill station 114 three times, but embodiments of the present invention are not limited thereto.

在一些實施例中，第一軋機站112可適用於粗軋製程，第二軋機站114也適用於粗軋製程，但本發明之實施例並不受限於此。 In some embodiments, the first rolling mill station 112 may be suitable for the rough rolling process, and the second rolling mill station 114 may also be suitable for the rough rolling process, but embodiments of the present invention are not limited thereto.

另外，在第一軋機站112之前，可再設置鋼胚寬度量測裝置118，以於鋼胚進入第一軋機站112之前先量測鋼胚之鋼胚寬度/偏移值。鋼胚寬度量測裝置118之功能係類似於鋼胚寬度量測裝置112c，故不在此贅述。 In addition, before the first rolling mill station 112 , a steel billet width measuring device 118 may be further installed to measure the billet width/offset value of the steel billet before the steel billet enters the first rolling mill station 112 . The function of the billet width measuring device 118 is similar to that of the billet width measuring device 112c, so it is not repeated here.

請參照圖3，其係繪示根據本發明實施例之楔形鋼胚之軋延方法300的流程示意圖，其中軋延方法300係適用於上述軋延系統100之軋延控制系統120。在軋延方法300中，首先進行步驟310，以獲得煉鋼廠所提供之一鋼胚外形資料。如之前所述，煉鋼廠可使用例如中華民國專利號第I251661號之技術來獲得鋼胚的外形資料。 Please refer to FIG. 3 , which illustrates a wedge-shaped steel according to an embodiment of the present invention A schematic flowchart of the rolling method 300 of the green sheet, wherein the rolling method 300 is suitable for the rolling control system 120 of the rolling system 100 described above. In the rolling method 300, step 310 is first performed to obtain a steel billet profile data provided by a steel mill. As mentioned earlier, steel mills can use techniques such as ROC Patent No. I251661 to obtain profile data for steel billets.

然後，進行步驟320，以根據鋼胚外形資料來判斷鋼胚是否屬於楔形不良。在本實施例中，當鋼胚寬度方向兩側厚度不等高時，便會判斷鋼胚屬於楔形不良的狀況。當判斷出鋼胚屬於楔形不良時，進行步驟330，以判斷預設之滾軋後目標寬度值與前述之鋼胚寬度值之差值是否大於一裁減量閥值，例如30公厘(mm)。當預設之滾軋後目標寬度值與前述之鋼胚寬度值之差值未大於30公厘時，進行步驟340，以修改滾軋後目標寬度值。此修改後之滾軋後目標寬度值小於前述之鋼胚寬度值，且差值大於30公厘。接著，進行步驟350，以根據修改後之滾軋後目標寬度值來對鋼胚進行裁邊製程。在本發明之實施例中，可透過有限元素模型分析來對鋼胚進行分析，以根據實際需求來獲得合適的裁減量閥值。 Then, go to step 320 to determine whether the steel blank is wedge-shaped defect according to the shape data of the steel blank. In this embodiment, when the thicknesses of the two sides in the width direction of the steel blank are unequal, it is determined that the steel blank is in a bad wedge shape. When it is determined that the billet is wedge-shaped, step 330 is performed to determine whether the difference between the preset target width value after rolling and the aforementioned billet width value is greater than a cut-off threshold, such as 30 millimeters (mm) . When the difference between the preset target width value after rolling and the aforementioned steel billet width value is not greater than 30 mm, step 340 is performed to modify the target width value after rolling. The modified target width value after rolling is smaller than the aforementioned steel billet width value, and the difference is greater than 30 mm. Next, step 350 is performed to perform a trimming process on the steel billet according to the modified target width value after rolling. In the embodiment of the present invention, the steel billet can be analyzed through finite element model analysis, so as to obtain an appropriate cut-off threshold value according to actual requirements.

具體而言，若第一軋機站112原本的滾軋後目標寬度值為1280公厘，目前的鋼胚寬度值為1300公厘，則步驟340會去修改滾軋後目標寬度值為，例如1250公厘，使得修改後的滾軋後目標寬度值與目前的鋼胚寬度值之差值(即50公厘)大於30公厘。接著，步驟350會控制第一軋機站112之垂直軋機112a來以1250公厘為滾軋後目標寬度值進行裁邊製程。具體而言，本實施例將原本對應至訂單需求為1280公厘的產品轉換成對應至訂單需求為1250公厘的產品，以符合產品的尺寸需求。 Specifically, if the original target width after rolling of the first rolling mill 112 is 1280 mm, and the current steel billet width is 1300 mm, step 340 will modify the target width after rolling, for example, 1250 mm, so that the difference between the revised target width value after rolling and the current steel billet width value (ie, 50 mm) is greater than 30 mm. Next, step 350 controls the vertical rolling mill 112a of the first rolling mill station 112 to roll at 1250 mm After the target width value, the trimming process is performed. Specifically, in this embodiment, a product originally corresponding to an order requirement of 1280 mm is converted into a product corresponding to an order requirement of 1250 mm, so as to meet the size requirement of the product.

由上述說明可知，在本發明之實施例中，當檢測到鋼胚具有楔形不良的狀況時，改變滾軋後目標寬度值，加大預設的裁減量，使裁減量大於裁減量閥值(例如30公厘)，如此即可利用垂直軋機之槽形裁邊輥來消除楔形鋼胚的厚度差異。 It can be seen from the above description that in the embodiment of the present invention, when it is detected that the steel billet has a bad wedge shape, the target width value after rolling is changed, and the preset cutting amount is increased, so that the cutting amount is greater than the cutting amount threshold ( For example, 30 mm), so that the thickness difference of the wedge-shaped billet can be eliminated by using the groove-shaped trimming roll of the vertical rolling mill.

在本發明之一些實施例中，上述之楔形鋼胚之軋延方法300可再調整水平軋機112b之水平軋輥的角度，使其具有一傾斜量(傾斜趨勢與鋼胚相同)，再利用水平軋機112b之水平軋輥來對鋼胚進行滾軋，以減少鋼胚側彎，避免鋼胚無法進入下一個製程。 In some embodiments of the present invention, the above-mentioned wedge-shaped billet rolling method 300 can readjust the angle of the horizontal rolls of the horizontal rolling mill 112b to have an inclination amount (the inclination trend is the same as that of the billet), and then use the horizontal rolling mill The horizontal roll of 112b is used to roll the steel billet to reduce the side bending of the steel billet and prevent the steel billet from being unable to enter the next process.

請參照圖4，其係繪示根據本發明實施例之水平軋輥410與鋼胚220示意圖。如圖4所示，水平軋機112b之水平軋輥410具有傾斜量dS1，鋼胚220的兩側高度分別為H1和H2，高度差為△t。傾斜量ds1則可根據下式(1)計算而得：

Please refer to FIG. 4 , which is a schematic diagram of a horizontal roller 410 and a steel blank 220 according to an embodiment of the present invention. As shown in FIG. 4 , the horizontal roll 410 of the horizontal rolling mill 112b has an inclination amount dS1, the heights of the two sides of the billet 220 are H1 and H2, respectively, and the height difference is Δt. The inclination amount ds1 can be calculated according to the following formula (1):

其中b=0.3；a=0.6；Lc為水平軋輥之長度；W為鋼胚寬度；EqWedge為等效楔形量，其可根據下式(2)計算而得：EqWedge=(dH＊dW)/W (2) where b=0.3; a=0.6; Lc is the length of the horizontal roll; W is the width of the steel billet; EqWedge is the equivalent wedge, which can be calculated according to the following formula (2): EqWedge=(dH*dW)/W (2)

其中dH為一顯著下斜區段之厚度減少量；dW為顯著下斜區段之寬度。值得說明的是，雖然本案圖4所繪示之鋼胚220的上表面具有固定之斜率，但本案圖4僅用以方便說明。實際上鋼胚220之上表面會具有斜率不同的區段，而其中斜率較大的區段為顯著下斜區段。 where dH is the thickness reduction of a significant downslope section; dW is The width of the significant downslope segment. It should be noted that although the upper surface of the steel blank 220 shown in FIG. 4 of the present pattern has a fixed slope, FIG. 4 of the present pattern is only used for convenience of description. In fact, the upper surface of the steel billet 220 has sections with different slopes, and the section with a larger slope is a significantly downward sloped section.

在本發明之一些實施例中，軋延產線110可更包含邊導器510，如圖5所示。邊導器510係設置於第一軋機站112與第二軋機站114之間，以對經過第一軋機站112滾軋後的鋼胚220進行側邊矯正製程，其係藉由施以側向作用力，使側彎鋼胚部分222的截面產生扭矩，造成截面應力分布差異，使水平軋延後之側彎程度改善。在本實施例中，邊導器之夾持壓力係大於4.5噸，但本發明之實施例並不受限於此。 In some embodiments of the present invention, the rolling line 110 may further include an edge guide 510 , as shown in FIG. 5 . The edge guide 510 is arranged between the first rolling mill station 112 and the second rolling mill station 114 to perform a side correction process for the steel billet 220 after rolling through the first rolling mill station 112. The acting force generates torque on the section of the side-bending steel billet portion 222, resulting in a difference in the stress distribution of the section, and improving the side-bending degree after horizontal rolling. In this embodiment, the clamping pressure of the side guide is greater than 4.5 tons, but the embodiment of the present invention is not limited to this.

雖然本發明已以實施例揭露如上，然其並非用以限定本發明，任何所屬技術領域中具有通常知識者，在不脫離本發明的精神和範圍內，當可作些許的更動與潤飾，故本發明的保護範圍當視後附的申請專利範圍所界定者為準。 Although the present invention has been disclosed above by the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be determined by the scope of the appended patent application.

300:楔形鋼胚之軋延方法 300: Rolling method of wedge-shaped billets

310~350:步驟 310~350: Steps

Claims

一種楔形鋼胚之軋延方法，包含：獲得一鋼胚外形資料，其中該鋼胚外形資料包含一鋼胚寬度值；根據該鋼胚外形資料來判斷該鋼胚是否屬於楔形不良，其中當該鋼胚外形資料顯示該鋼胚之一寬度方向的兩側厚度不等高時，即判斷該鋼胚屬於楔形不良；當該鋼胚是屬於楔形不良時，判斷該鋼胚之一滾軋後目標寬度值與該鋼胚寬度值之差值是否大於一裁減量閥值；當該鋼胚之該滾軋後目標寬度值與該鋼胚寬度值之差值未大於該裁減量閥值時，修改該滾軋後目標寬度值，其中修改後之該滾軋後目標寬度值小於該鋼胚寬度值，且修改後之該滾軋後目標寬度值與該鋼胚寬度值之差值大於該裁減量閥值；以及根據修改後之該滾軋後目標寬度值來對該鋼胚進行一裁邊製程，其中該裁邊製程採用槽形裁邊輥。 A rolling method for a wedge-shaped steel billet, comprising: obtaining a shape data of a steel billet, wherein the shape data of the steel billet includes a width value of the steel billet; according to the shape data of the steel billet, judging whether the steel billet is a wedge-shaped defect, wherein when the steel billet shape data is poor When the profile data of the steel billet shows that the thicknesses on both sides of one of the steel billets in the width direction are unequal, it is judged that the billet is wedge-shaped bad; Whether the difference between the width value and the steel blank width value is greater than a cutting amount threshold; when the difference between the steel blank's target width value after rolling and the steel blank width value is not greater than the cutting amount threshold value, modify the the target width value after rolling, wherein the target width value after rolling after modification is smaller than the width value of steel billet, and the difference between the target width value after rolling rolling after modification and the width value of steel billet is greater than the cutting amount and performing a trimming process on the steel billet according to the modified target width value after rolling, wherein the trimming process adopts a groove-shaped trimming roller.

如請求項1所述之楔形鋼胚之軋延方法，更包含利用一邊導器來對裁邊後之該鋼胚進行一側邊矯正製程，其中該側邊矯正製程係對裁邊後之該鋼胚施加一夾持壓力。 The rolling method for a wedge-shaped steel billet as claimed in claim 1, further comprising using a side guide to perform a side edge correction process on the steel billet after edge trimming, wherein the side edge correction process is for the side edge correction process after edge trimming. The billet applies a clamping pressure.

如請求項2所述之楔形鋼胚之軋延方法，其中該夾持壓力大於4.5噸。 The rolling method for a wedge-shaped steel billet as claimed in claim 2, wherein the clamping pressure is greater than 4.5 tons.

如請求項1所述之楔形鋼胚之軋延方法，更包含：對該鋼胚進行一水平軋延製程。 The rolling method for a wedge-shaped steel billet as claimed in claim 1 further comprises: performing a horizontal rolling process on the steel billet.

如請求項4所述之楔形鋼胚之軋延方法，其中該水平軋延製程包含：根據該水平軋輥之一軋輥長度以及該鋼胚外形資料來計算一軋輥水平傾斜量；以及根據該軋輥水平傾斜量來調整一水平軋輥之傾斜量，以利用該水平軋輥來對該鋼胚進行軋延。 The rolling method for a wedge-shaped billet as claimed in claim 4, wherein the horizontal rolling process comprises: calculating a roll horizontal inclination amount according to a roll length of the horizontal roll and the profile data of the billet; and according to the roll level The inclination amount of a horizontal roll is adjusted to use the horizontal roll to roll the steel billet.

一種楔形鋼胚之軋延系統，包含：一垂直軋機，其中該垂直軋機包含槽形裁邊輥；一鋼胚寬度量測裝置；以及一軋延控制系統，用以：獲得一鋼胚外形資料，其中該鋼胚外形資料包含一鋼胚寬度值；根據該鋼胚外形資料來判斷該鋼胚是否屬於楔形不良，其中當該鋼胚外形資料顯示該鋼胚之一寬度方向的兩側厚度不等高時，即判斷該鋼胚屬於楔形不良；當該鋼胚是屬於楔形不良時，判斷該鋼胚之一滾軋後目標寬度值與該鋼胚寬度值之差值是否大於一裁減量閥值；當該鋼胚之該滾軋後目標寬度值與該鋼胚寬度值之差值未大於該裁減量閥值時，修改該滾軋後目標寬度值，其中修改後之該滾軋後目標寬度值小於該鋼胚寬度值，且修改後之該滾軋後目標寬度值與該鋼胚寬度值之差值大於該裁減量閥值；以及根據修改後之該滾軋後目標寬度值來利用該垂直軋機對該鋼胚進行一裁邊製程，並利用該鋼胚寬度量測裝置來量測該鋼胚之寬度，其中該裁邊製程採用槽形裁邊輥。 A rolling system for wedge-shaped steel billets, comprising: a vertical rolling mill, wherein the vertical rolling mill includes groove-shaped trimming rolls; a billet width measuring device; and a rolling control system for: obtaining a billet shape data , wherein the shape data of the steel billet includes a width value of the steel billet; according to the shape data of the steel billet, it is judged whether the steel billet is a wedge-shaped defect. When the height is equal, it is judged that the steel billet is wedge-shaped bad; when the steel billet is wedge-shaped bad, it is judged whether the difference between the target width value after rolling of one of the steel billets and the steel billet width value is greater than a reduction valve value; the difference between the target width value of the billet after rolling and the billet width value When the value is not greater than the cutting amount threshold, modify the target width value after rolling, wherein the target width value after rolling after modification is less than the width value of the billet, and the target width value after rolling after modification is the same as the target width value after rolling. The difference between the steel billet width values is greater than the cutting amount threshold; and according to the modified target width value after rolling, the vertical rolling mill is used to perform a trimming process on the steel billet, and the steel billet width measuring device is used To measure the width of the steel blank, the edge trimming process adopts a grooved edge trimming roller.

如請求項6所述之楔形鋼胚之軋延系統，更包含：一邊導器，用以對裁邊後之該鋼胚進行一側邊矯正製程，其中該側邊矯正製程係對裁邊後之該鋼胚施加一夾持壓力。 The rolling system for the wedge-shaped steel billet as claimed in claim 6, further comprising: a side guide for performing a side edge correction process on the steel billet after edge trimming, wherein the side edge correction process is for the edge trimming process. A clamping pressure is applied to the steel blank.

如請求項7所述之楔形鋼胚之軋延系統，其中該夾持壓力大於4.5噸。 The rolling system for wedge-shaped steel billets as claimed in claim 7, wherein the clamping pressure is greater than 4.5 tons.

如請求項6所述之楔形鋼胚之軋延系統，更包含一水平軋機，其中該軋延控制系統，更用以：控制該水平軋機來對該鋼胚進行一水平軋延製程。 The rolling system for wedge-shaped steel billets as claimed in claim 6 further comprises a horizontal rolling mill, wherein the rolling control system is further used for: controlling the horizontal rolling mill to perform a horizontal rolling process on the steel billets.

如請求項9所述之楔形鋼胚之軋延系統，其中該水平軋延製程包含：根據該水平軋輥之一軋輥長度以及該鋼胚外形資料來計算一軋輥水平傾斜量；以及根據該軋輥水平傾斜量來調整該水平軋機之一水平軋輥之傾斜量，以利用該水平軋輥來對該鋼胚進行軋延。 The rolling system for wedge-shaped billets as claimed in claim 9, wherein the horizontal rolling process comprises: Calculate the horizontal inclination of a roll according to the length of one of the horizontal rolls and the shape data of the steel billet; and adjust the inclination of a horizontal roll of the horizontal rolling mill according to the horizontal inclination of the roll, so as to use the horizontal roll to Steel billets are rolled.