WO2016155603A1 - 具有纵向不同厚度的板材的轧制方法 - Google Patents
具有纵向不同厚度的板材的轧制方法 Download PDFInfo
- Publication number
- WO2016155603A1 WO2016155603A1 PCT/CN2016/077628 CN2016077628W WO2016155603A1 WO 2016155603 A1 WO2016155603 A1 WO 2016155603A1 CN 2016077628 W CN2016077628 W CN 2016077628W WO 2016155603 A1 WO2016155603 A1 WO 2016155603A1
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- WIPO (PCT)
- Prior art keywords
- rolling
- thickness
- segments
- length
- equal
- Prior art date
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 99
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000007704 transition Effects 0.000 claims abstract description 20
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 238000004364 calculation method Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 3
- 230000008719 thickening Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 229910000861 Mg alloy Inorganic materials 0.000 description 4
- 238000012356 Product development Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 239000003562 lightweight material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/30—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
- B21B37/24—Automatic variation of thickness according to a predetermined programme
- B21B37/26—Automatic variation of thickness according to a predetermined programme for obtaining one strip having successive lengths of different constant thickness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2265/00—Forming parameters
- B21B2265/12—Rolling load or rolling pressure; roll force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2271/00—Mill stand parameters
- B21B2271/02—Roll gap, screw-down position, draft position
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/04—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring thickness, width, diameter or other transverse dimensions of the product
Definitions
- the present invention relates to sheet metal rolling technology, and more particularly to a rolling method for sheet materials having longitudinally different thicknesses.
- the rolling technology for producing variable thickness is called flexible rolling technology and is derived from a project funded by the German Research Fund (DFG) in 1997. Mubea, which was originally involved in the project, is currently the main supplier of thickened boards on the market.
- the core of flexible rolling technology is to change the thickness of the outlet by changing the roll gap (see Figure 1).
- the object of the present invention is to propose a rolling method for a sheet material having different thicknesses in the longitudinal direction, which eliminates the subsequent straightening and shearing processes of the industrial roll-to-roll thickness rolling, and can be conveniently and quickly in the product development stage. Sheets with different set thicknesses in the longitudinal direction are provided.
- variable thickness plate (VRB) having different thicknesses in the longitudinal direction obtained by rolling generally has the shape shown in FIG.
- the present invention proposes a unequal thickness rolling process on a conventional single-piece rolling mill, which is intended to roll a single sheet of sheet material having different thicknesses in the longitudinal direction in a simple and flexible manner.
- a rolling method of a sheet material having longitudinally different thicknesses of the present invention comprising the steps of:
- Thickness H>max(h 1 ,h 2 ,...,h N ), unit, mm;
- the length of the required raw material is L0+L, unit, mm; wherein L0 is the length of the clamp and the balance of the roll inlet;
- P i is the set rolling force of the i-th equal thickness section, kN;
- R the working roll radius, mm
- ⁇ s0 — is the initial yield stress of the strip, kN/mm 2 ;
- ⁇ the coefficient of friction between the work roll and the rolled piece, 0.02 to 0.12;
- T-rolling temperature °C
- V r — is the rack speed, m / min
- C H — is the Young's modulus of the rolled piece, Mpa;
- G i the set roll gap of the i-th equal thickness section, mm;
- L i , T i the i-th equal thickness segment, the length of the transition, mm;
- the widening is ignored, and the equal thickness segments and the starting and ending points of the transition segment are marked on the raw materials.
- the corresponding lengths of the equal thickness segments and the transition segments are calculated as follows:
- a single-piece reciprocating test mill can be used to prepare a single qualified thickened plate material by several rolling optimization data. In this way, it is not necessary to prepare raw materials for the coil, which saves the raw materials; it also does not need to study the complicated control method of rolling thick rolling, which saves debugging time. It is especially suitable for providing debugging materials for the initial stage of product development.
- Figure 1 is a schematic view of flexible rolling.
- FIG. 2 is a schematic view showing the thickness profile of the longitudinal period variable thickness sheet of the present invention.
- Figure 3 is a schematic view of the production of unequal thick plates in a single-piece rolling mill.
- Figure 4 is a schematic view showing the shape of unequal thickness samples.
- the present invention performs unequal thickness rolling on a conventional single-piece rolling mill to produce unequal-thickness sheets as shown in Fig. 4, 10 is a rolling mill, 20 is a clamp, and 30 is a sheet. Specifically, the production is as follows:
- Thickness H>max(h 1 , h 2 , h 3 , h 4 , h 5 ), mm;
- the length of the required raw material is L0 + L (mm).
- the thickness of the thick section of the rolled piece is determined by the roll gap G i or the rolling force P i , and the length of the equal thickness section and the transition section is determined by the rolling time t i .
- the actual rolling effect is related to the rolling speed. Therefore, the rolling speed is set first during rolling so that the rolling can be carried out at a constant speed V r .
- the rolling speed must meet:
- control set value of rolling is the roll gap, rolling force and rolling time of each equal thickness section, the change of sheet strength and the fluctuation of sheet rolling speed during actual rolling.
- the shape of the rolled piece often does not match the set shape. Therefore, it is necessary to adjust the set value according to the shape of the rolled piece after rolling.
- the simpler method is:
- the present invention can be implemented on a single-piece reciprocating mill simply by making certain improvements to the control system. It can be promoted in the field of variable thickness plate research. With the increasing emphasis on car lightweighting, this technology will have the same broad prospects as VRB.
- the process of the invention can also be used in the production of another lightweight material, magnesium alloy. Temperature and rolling speed are critical factors in the rolling process of magnesium alloy strips. The use of this technique in a single-plate hot rolling mill ensures that the different reductions of the strip can be achieved with exactly the same boundary conditions. This is very important for studying the properties of magnesium alloy strips.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Metal Rolling (AREA)
Abstract
Description
Claims (1)
- 具有纵向不同厚度的板材的轧制方法,其特征是,包括如下步骤:1)设定样件的等厚段段数N、各等厚段的厚度h1,h2,…,hN,各等厚段长度L1,L2,…,LN以及各等厚段之间的过渡段长度T1,T2,…,TN-1,N个等厚段有N-1个过渡段;上述厚度、长度单位均为mm;2)原料选择厚度:H>max(h1,h2,…,hN),单位,mm;长度:因此,所需原料的长度为L0+L,单位,mm;其中,L0为夹钳长度与轧辊入口余量;3)对每段的轧制力、辊缝以及轧制时间设定①轧制力计算:式中,Pi—为第i个等厚段的设定轧制力,kN;H、hi—分别为轧件的入口、第i个等厚段出口厚度,mm;b—为轧件宽度,mm;R—为工作辊半径,mm;σs0—为带材的初始屈服应力,kN/mm2;μ—工作辊与轧件之间的摩擦系数,0.02~0.12;tb、tf—夹钳施加在轧件上的后、前张力,MPa;T—轧制温度,℃;Vr—为机架速度,m/min;CH—为轧件的杨氏模量,Mpa;②辊缝根据轧机的弹跳方程进行计算:其中,Gi—第i个等厚段的设定辊缝,mm;Pi—为第i个等厚段的设定轧制力,kN;M—机架刚度,kN/mm,机架固有参数,在轧制开始之前进行测定;③轧制时间计算:其中,Li、Ti—第i个等厚段、过渡的长度,mm;Vr—轧制速度,mm/s;4)轧制准备根据样件要求的形状,按照体积不变的原理,忽略宽展,在原料上标记各等厚段及过渡段起止点,各等厚段及过渡段相应的长度计算如下:5)轧制按照步骤3)计算的设定值,进行轧制;6)优化轧制参数测量轧制后轧件各等厚段的厚度与长度及过渡段的长度,将测得的各等厚段的厚度与设定的样件厚度进行比较,进而对步骤3)设定的每段轧制力Pi、辊缝Gi进行修正;将测得的长度与步骤4)所做标记位置进行比较,进而对步骤3)设定的每段轧制时间进行修正;用同尺寸原料,重复步骤4)、5),并再次修正,经过2~3次试轧,可以轧制出符合样件要求的轧件。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020177030356A KR102028502B1 (ko) | 2015-03-30 | 2016-03-29 | 세로방향에서 상이한 두께를 가진 판재의 압연방법 |
JP2017550505A JP2018509301A (ja) | 2015-03-30 | 2016-03-29 | 縦方向の厚さが異なる板材の圧延方法 |
EP16771358.5A EP3278889A4 (en) | 2015-03-30 | 2016-03-29 | Rolling method for boards with different longitudinal thicknesses |
US15/561,043 US10610914B2 (en) | 2015-03-30 | 2016-03-29 | Rolling method for boards with different longitudinal thicknesses |
Applications Claiming Priority (2)
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CN201510141809.0 | 2015-03-30 | ||
CN201510141809.0A CN104741377B (zh) | 2015-03-30 | 2015-03-30 | 具有纵向不同厚度的板材的轧制方法 |
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WO2016155603A1 true WO2016155603A1 (zh) | 2016-10-06 |
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PCT/CN2016/077628 WO2016155603A1 (zh) | 2015-03-30 | 2016-03-29 | 具有纵向不同厚度的板材的轧制方法 |
Country Status (6)
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US (1) | US10610914B2 (zh) |
EP (1) | EP3278889A4 (zh) |
JP (1) | JP2018509301A (zh) |
KR (1) | KR102028502B1 (zh) |
CN (1) | CN104741377B (zh) |
WO (1) | WO2016155603A1 (zh) |
Families Citing this family (11)
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CN104741377B (zh) * | 2015-03-30 | 2017-01-04 | 宝山钢铁股份有限公司 | 具有纵向不同厚度的板材的轧制方法 |
HUE063023T2 (hu) | 2016-12-30 | 2023-12-28 | Outokumpu Oy | Eljárás és berendezés fémszalagok rugalmas hengerlésére |
CN108284130A (zh) * | 2017-01-09 | 2018-07-17 | 宝山钢铁股份有限公司 | 一种冷轧变厚度板材的轧制方法 |
CN108906893B (zh) * | 2018-08-03 | 2020-05-05 | 中铝瑞闽股份有限公司 | 一种提高铝热精轧穿带成功率的轧制方法 |
CN109108732B (zh) * | 2018-08-09 | 2020-05-08 | 上海宝钢包装钢带有限公司 | 变厚板的自动激光定位装置及其定位方法 |
WO2020035107A1 (de) * | 2018-08-16 | 2020-02-20 | Bilstein Gmbh & Co. Kg | Verfahren und anlage zur herstellung von bandabschnitten aus blech sowie bandausschnitt aus blechbandmaterial |
DE102019215265A1 (de) * | 2018-12-06 | 2020-06-10 | Sms Group Gmbh | Verfahren zum Betreiben eines Walzgerüstes zum Stufenwalzen |
CN110328232A (zh) * | 2019-05-29 | 2019-10-15 | 邯郸钢铁集团有限责任公司 | 一种利用过程控制轧制楔形钢板的方法 |
CN111680433B (zh) * | 2020-04-29 | 2023-02-21 | 中国第一汽车股份有限公司 | 一种板材厚度的赋值方法、装置、设备及存储介质 |
CN113751502B (zh) * | 2021-08-05 | 2023-06-20 | 包头钢铁(集团)有限责任公司 | 一种同一冷轧钢带轧制不同厚度的方法 |
CN113830180B (zh) * | 2021-10-26 | 2023-02-28 | 岚图汽车科技有限公司 | 一种汽车变断面顶盖横梁结构及汽车车身 |
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- 2015-03-30 CN CN201510141809.0A patent/CN104741377B/zh active Active
-
2016
- 2016-03-29 WO PCT/CN2016/077628 patent/WO2016155603A1/zh active Application Filing
- 2016-03-29 US US15/561,043 patent/US10610914B2/en active Active
- 2016-03-29 JP JP2017550505A patent/JP2018509301A/ja active Pending
- 2016-03-29 EP EP16771358.5A patent/EP3278889A4/en not_active Ceased
- 2016-03-29 KR KR1020177030356A patent/KR102028502B1/ko active IP Right Grant
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Also Published As
Publication number | Publication date |
---|---|
US10610914B2 (en) | 2020-04-07 |
KR20170130516A (ko) | 2017-11-28 |
JP2018509301A (ja) | 2018-04-05 |
CN104741377B (zh) | 2017-01-04 |
EP3278889A1 (en) | 2018-02-07 |
US20180071803A1 (en) | 2018-03-15 |
CN104741377A (zh) | 2015-07-01 |
KR102028502B1 (ko) | 2019-10-04 |
EP3278889A4 (en) | 2018-12-19 |
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