EP3325186A1 - Anlage und verfahren zum beseitigen von planheitsfehlern eines metallischen flachprodukts - Google Patents
Anlage und verfahren zum beseitigen von planheitsfehlern eines metallischen flachproduktsInfo
- Publication number
- EP3325186A1 EP3325186A1 EP16741297.2A EP16741297A EP3325186A1 EP 3325186 A1 EP3325186 A1 EP 3325186A1 EP 16741297 A EP16741297 A EP 16741297A EP 3325186 A1 EP3325186 A1 EP 3325186A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- straightening
- flat product
- rollers
- plant
- flatness
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000002184 metal Substances 0.000 title abstract description 8
- 238000005452 bending Methods 0.000 claims description 35
- 230000007547 defect Effects 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 241000196324 Embryophyta Species 0.000 description 23
- 238000001514 detection method Methods 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 241000208202 Linaceae Species 0.000 description 2
- 235000004431 Linum usitatissimum Nutrition 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers
Definitions
- the invention relates to a system for eliminating flatness errors of a metallic flat product, in particular a sheet or a strip, comprising a plurality of straightening rollers arranged on opposite sides of the flat product. Furthermore, the invention relates to a method for eliminating
- Flatness errors of a metallic flat product are deviations of the large surfaces of the flat product from an ideal, in particular flat, target surface.
- the flatness errors can occur, for example, in the form of waves or bulges.
- the flatness of a flat product is an essential quality feature of the flat product.
- Material structure of a flat product which arise primarily by a rolling process and / or a heat treatment of the flat product. It is known to either roll straightening machines or bending presses for eliminating
- a roller leveling machine comprises a plurality of straightening rollers arranged on opposite sides of the flat product to be treated, to center and
- Roller straightening machine operates lengthwise and primarily corrects uniaxial flatness errors in the direction of passage of the flat product through the Roller straightener. In the transverse direction this is only a limited
- WO 2013/135688 A1 discloses a continuous working device for straightening metal strip.
- the device comprises several
- Each straightening roller can be side by side in the transverse direction
- An object of the invention is to make the removal of flatness errors of a metallic flat product, in particular a sheet or a strip, more flexible and simpler and thus more cost-effective.
- a plant according to the invention for eliminating flatness defects of a metallic flat product, in particular a sheet or a strip comprises a plurality of straightening rolls arranged on opposite sides of the flat product, wherein at least two on opposite sides of the Having flat product arranged cooperating straightening rollers each having at least three axially adjacent to each other, individually engageable part rollers.
- a discontinuous bending presses are carried out according to the invention in which the individual partial rolls can be used as press heads in order to be able to correct multiaxial flatness defects of the flat product.
- the sub-rollers with the system according to the invention in particular continuous, combined straightening and bending presses are performed during a single pass of the slab through the system.
- Press heads also act in the transverse direction and at the same time take over a conventional directional function by a superimposed employment. In these three different modes of operation of the system according to the invention act
- both the force that can be generated with the respective sub-roll and a tilt position of the respective sub-roll relative to the longitudinal center axis of the respective leveling roll can be set.
- the respective sub-roller can be controlled like a press tool of a bending press in order to correct local, in particular multiaxial, flatness errors of the flat product. Straightening and bending can be done by means of a single
- inventive plant to be performed.
- this is two separate systems are required, namely one for straightening and one for bending presses. Consequently, conventionally, either in a batch operation of a bending press machine in a plurality of axes is bent or uniaxially directed in a continuous operation of a straightening system.
- at least two different types of plant must be maintained, both of which are not always fully utilized. This leads to high investment costs for the two systems and correspondingly high operating costs.
- only a single system according to the invention must be maintained, which is accompanied by a significant reduction of investment costs and operating costs.
- the system according to the invention may also comprise three or more straightening rollers each having at least three axially adjacently arranged, individually engageable part rollers.
- a straightening roller may also have four or more axially adjacent to each other, individually engageable part rollers.
- the sub-rollers of each straightening roller can be actively adjusted in each case via at least one own adjusting unit.
- the Anstellein units are for this purpose individually, in particular individually designed to be controllable. With such a positioning unit, the respective sub-roller can in particular also be inclined relative to the longitudinal central axis of the respective straightening roller. This can be a combination of force and
- Position control can be used.
- the pitching rollers of a straightening roller associated with adjusting units can be made jointly via a common Anstellech, which in particular with respect
- At least one adjusting unit comprises at least one mechanical, electromechanical, pneumatic or hydraulic actuator.
- at least one adjusting unit may comprise a combination of at least two of these actuator variants.
- at least the adjusting units associated with the axially outer part rollers of one of the two straightening rollers each have at least one pivoting unit with which the respective part roller can be adjusted passively inclined to the longitudinal axis of this straightening roller. In this way, the inclination position of the respective outer part roller can be passively adapted to the bending line set with the cooperating, actively engageable part roller on the opposite side of the flat product, without the need for an active control. This will be the
- the pivoting unit can enable pivoting of the respective sub-roller about an axis extending in the direction of passage of the flat product.
- the pivot unit can enable pivoting of the respective sub-roller about an axis extending transversely to the direction of passage.
- the pivoting unit may be designed such that upon a pivoting of the respective sub-roller a restoring force is generated by it, with which the sub-roller can be acted upon with force in the direction of its non-pivoted position.
- At least one adjusting unit has at least one wedge-lifting unit.
- the wedge-lifting unit comprises two wedges with wedge surfaces arranged opposite one another, which can be guided past one another, by means of whose relative movements the employment of the sub-roller takes place.
- a further advantageous embodiment provides that at least one sub-roller at at least one axial end portion with a
- Outer diameter reduction can be made, for example, by tangentially grinding a circumferential radius at the end portion of the sub-roll.
- the cooperating, the partial rollers having straightening rollers are offset with respect to a direction of passage of the flat product through the system or not offset from each other.
- the cooperating, the partial rolls having straightening rollers may be arranged with respect to the passage direction of the flat product by the system between conventional continuous straightening rollers.
- the system comprises at least one signal technically connectable with the Anstellein whatsoever control and / or control electronics, which is set up to control the Anstellein whatsoever depending on the quality and position of the flatness of the flat product such that the plant optionally a directing, a bending press or a combined straightening and bending presses is feasible.
- the respective quality and position of the flatness errors can be determined in advance. This can be done as part of an automated data logging or manual
- the control and / or regulating electronics can select the respective mode of operation of the system taking into account information or specifications as well as evaluation criteria on the respective type of error. The selection can alternatively be made by the operating personnel.
- the sub-rollers of a straightening roller are synchronized and act as a continuous straightening roller.
- the straightening mode improves the flatness of the flat product only in the uniaxial direction, as in a conventional roller straightening machine.
- the straightening rolls comprising the partial rolls are isolated in accordance with a conventional bending press, thereby correcting local, multi-axial flatness flatness defects.
- the straightening rollers having the partial rollers and the conventional straightening rollers work simultaneously to eliminate the flatness error of the flat product. If it requires the quality of the local flatness error of the flat product, during a first pass of the flax product through the plant the mode of operation "bending presses" are selected. Subsequently, or after largely eliminating this local flatness error can during another
- Hiring units can be done using a guideline model.
- the system comprises at least one signal-technically connectable to the control and / or regulating electronics detection device for
- feed-forward control Via the outlet-side detection of the quality and position of the flatness error of the flat product treated with the system, any necessary consequential stitches can be provided with a modified setup (feed-backward control).
- a method according to the invention for eliminating flatness errors of a metallic flat product, in particular a sheet or a strip, using a straightening system is optionally with the straightening system Straightening, a bending press or a combined straightening and bending presses performed.
- FIG. 1 shows a schematic representation of an exemplary embodiment of a system according to the invention in a first system state
- Figure 2 is a schematic representation of the system shown in Figure 1 in a further state of the system;
- Figure 3 is a schematic representation of another embodiment of a system according to the invention.
- Figure 4 is a schematic representation of another embodiment of a system according to the invention.
- Figure 5 is a schematic representation of another embodiment of a system according to the invention.
- Figure 6 a schematic representation of a part roll of another
- FIG. 7 shows a schematic representation of an exemplary embodiment of a method according to the invention
- FIG. 8 shows a schematic detail of an embodiment of a
- FIGs 1 and 2 show schematically possible convex or concave
- the plant 1 comprises several on opposite sides of the
- the sub-rollers 5 and 6 of each straightening roller 3 and 4 are each at least one own Anstelltechnik 7 according to the
- Double Arrows 8 active adjustable.
- the adjusting units 7 for adjusting the partial rollers 6 are shown.
- At least one adjusting unit 7 may have at least one mechanical, electromechanical, pneumatic or hydraulic actuator, not shown.
- the sub-rollers 6 are shown as a solid line in a state in which the actuators do not work.
- Sub-roll 5 or 6 may be provided on at least one axial end portion with an outer diameter reduction, not shown.
- the sub-rollers 5 and 6 having straightening rollers 3 and 4 may be with respect to a passage direction x of the flat product 2 offset by the system 1 or not offset from each other.
- Anstellein units 7 each have a pivoting unit 9, with which the respective sub-roller 6, as shown in Figure 1, passively inclined to the longitudinal central axis 10 of the straightening roller 4 is adjustable.
- Each pivoting unit 7 comprises a rocker 1 1, which is pivotally mounted about a parallel to the passage direction x of the flat product 2 through the system 1 aligned axis 12.
- each pivoting unit 7 comprises two compression springs 13, which each generate a restoring force upon pivoting of the rocker 1 1 from the position shown, with which the rocker 1 1 is acted upon in the direction of the position shown with force.
- the adjusting units 7 assigned to the axially outer sub-rollers 6 each have a wedge-lifting unit 14 with two wedges 15 and 16, through which
- the adjusting units 7 are jointly employable via a common adjusting unit 17, which has a wedge-lifting system formed by the wedges 18 and 19.
- the system 1 comprises a signaling technology with the Anstellein inch 7 connectable, not shown, control and / or control electronics, which is set up, the
- Planarity error of the metallic flat product 2 to control such that with the Appendix 1 either straightening, bending presses or a combined straightening and bending presses is feasible.
- the system 1 may further include at least one signal technically connectable to the control and / or regulating electronics, not shown detecting means for detecting a quality and position of the flatness of the treated with the system 1 or treated with the system 1 metallic
- the plant 1 comprises a plurality of straightening rolls 3, 4 and 20 arranged on opposite sides of the flat product.
- At least one adjusting unit comprises at least one mechanical, electromechanical, pneumatic or hydraulic actuator. At least the adjusting units associated with the axially outer part rollers of one of the two straightening rollers 3 and 4 can each have at least one pivot unit, not shown, with which the respective part roller is passively inclined to the longitudinal center axis 10 of this straightening roller 3 and 4, respectively. At least one adjusting unit may have at least one wedge lifting unit, not shown. At least one sub-roll may be attached to at least one axial end portion with a not shown
- the cooperating, the partial rolls having straightening rolls 3 and 4 are offset with respect to a passage direction x of the flat product through the system 1 to each other.
- the other straightening rollers 20 are
- the system 1 includes a signal technically connectable with the Anstellein inch, not shown control and / or regulating electronics, which is set up, the
- the system 1 may further include at least one signal technically connectable to the control and / or regulating electronics, not shown detecting means for detecting a quality and position of the flatness of the treated with the system 1 or treated with the system 1 metallic
- FIG. 4 shows a schematic representation of another embodiment of an inventive system 1 for eliminating flatness errors of a metallic flat product, not shown, in particular a sheet or a belt.
- This Appendix 1 differs from the embodiment shown in Figure 3, that four straightening rollers 3 and 4 are present, each having at least three axially adjacent to each other, individually engageable, not shown sub-rollers, and that these straightening rollers 3 and 4 one through the Straightening rollers 20 formed conventional roller straightening unit with respect to the passage direction x of the metallic flat product through the system 1 upstream or downstream.
- the system 1 corresponds to the embodiment shown in Figure 3, which is why here to avoid
- FIG 5 shows a schematic representation of another embodiment of an inventive system 1 for eliminating flatness errors of a metallic flat product, not shown, in particular a sheet or a belt.
- This Appendix 1 differs from the embodiment shown in Figure 4 that only two cooperating
- Straightening rollers 3 and 4 are present, each having at least three axially adjacent to each other, individually engageable, not shown sub-rollers and with respect to the direction of passage x of the metallic flat product through the system 1 the straightening rollers 20 upstream or downstream, and that the
- FIG. 1 shows a schematic representation of a part roller 5 and 6 of a further embodiment of an inventive system for eliminating flatness errors of a metallic flat product, not shown, in particular a sheet or a belt.
- the sub-roller 5 or 6 can be used in one of the systems shown in Figures 1 to 5.
- Sub-roller 5 and 6 is at both axial end portions each with a
- Outer diameter reduction 21 provided in the form of a radius to
- Figure 7 shows a schematic representation of an embodiment of an inventive method for eliminating flatness errors of a metallic flat product, not shown, in particular a sheet or a belt, using a straightening system, not shown, with the optional straightening, a bending presses or a combined straightening and bending presses can be carried out.
- the straightening system can be designed in accordance with one of the exemplary embodiments shown in FIGS. 1 to 6.
- step 100 data is added to the flatness of the straightening plant
- step 200 it is determined whether a bending press is required to eliminate flatness defects of the metallic flat product.
- information 300 in the form of specifications or evaluation criteria of flatness errors is taken into account, in particular whether they are edge waves, center waves, bowls or the like. This information 300 may consist of tables,
- step 400 the operating mode "straightening" is initiated, in which a single-axis Aligning the metallic flat product by means of the straightening system takes place.
- a bending press (+) is required, then in step 500 the required amount of deformation is calculated.
- step 600 it is determined in step 600 whether the quality of the flatness error is such that the flatness errors can be corrected in a single pass of the metallic flat product by the straightening system or not. If, in step 600, the flatness errors can be corrected in a single pass of the metallic flat product by the straightener (+), then in step 700 the mode "combined straightening and
- the straightening rolls having the part rolls for correcting multi-axial flatness defects for example, bowls
- the continuous straightening rolls without partial rolls for correcting waves are used
- step 600 If, in step 600, the flatness errors do not occur in a single pass of the metallic flat product through the
- step 900 it is determined whether further treatment of the metallic
- FIG. 8 shows a schematic detail of an embodiment of a control concept for a system according to the invention for eliminating flatness errors of a metallic flat product, not shown, in particular a sheet or a belt, given operation of the system.
- step 1 10 an inlet-side detection of flatness errors of the metallic flat product takes place.
- the step 1 10 may be 210 data from a Hot rolling mill, a visual inspection or measurements of the flatness of the metallic flat product to be supplied.
- step 310
- the flatness data becomes a step 410 of a
- the data from step 410 is provided to a plant controller and / or controller 510 to set a plant setup.
- the plant control and / or - regulation 510 then generates control signals 610 for controlling the
- Adjustment units of straightening rollers 3, 4 or 20 of the system are adjusted.
- step 710 an outflow-side detection of flatness errors of the metallic flat product can take place.
- the resulting measurements 810 are subjected to a flatness error analysis in step 910.
- the position of the respective flatness error in the width direction and length direction of the metallic flat product and the depth of the respective flatness error are determined.
- step 920 at least one correction value is determined, which is supplied to the plant control and / or regulation 510.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015213788.0A DE102015213788A1 (de) | 2015-07-22 | 2015-07-22 | Anlage und Verfahren zum Beseitigen von Planheitsfehlern eines metallischen Flachprodukts |
PCT/EP2016/067142 WO2017013099A1 (de) | 2015-07-22 | 2016-07-19 | Anlage und verfahren zum beseitigen von planheitsfehlern eines metallischen flachprodukts |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3325186A1 true EP3325186A1 (de) | 2018-05-30 |
EP3325186B1 EP3325186B1 (de) | 2019-04-17 |
Family
ID=56497759
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16741297.2A Active EP3325186B1 (de) | 2015-07-22 | 2016-07-19 | Anlage und verfahren zum beseitigen von planheitsfehlern eines metallischen flachprodukts |
Country Status (8)
Country | Link |
---|---|
US (1) | US11179759B2 (de) |
EP (1) | EP3325186B1 (de) |
JP (1) | JP6694502B2 (de) |
KR (1) | KR102094764B1 (de) |
CN (1) | CN107921501B (de) |
DE (1) | DE102015213788A1 (de) |
RU (1) | RU2703743C2 (de) |
WO (1) | WO2017013099A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020508880A (ja) | 2017-03-13 | 2020-03-26 | エス・エム・エス・グループ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | ローラー矯正機械を作動するための方法、および、ローラー矯正機械 |
CN113500113B (zh) * | 2021-07-29 | 2022-12-27 | 山东龙口三元铝材有限公司 | 铝卷材裁切收卷一体机 |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
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US1762292A (en) * | 1925-05-06 | 1930-06-10 | Morgan Construction Co | Rolling-mill housing and bearing construction |
US2254461A (en) * | 1938-11-17 | 1941-09-02 | Mckay Machine Co | Roller leveler |
DE1097241B (de) * | 1953-11-09 | 1961-01-12 | Hollmann Werke G M B H | Presse zum Biegen und Richten |
GB914020A (en) * | 1960-10-18 | 1962-12-28 | Head Wrightson & Co Ltd | Roller leveller straightening machines for metal plates, sheet or strip |
DE2344613C3 (de) | 1973-09-05 | 1979-10-25 | Th. Kieserling & Albrecht, 5650 Solingen | Zwei-Walzen-Richtmaschine für Rundmaterial wie Stangen und Rohre |
SU528984A1 (ru) | 1975-04-21 | 1976-09-25 | Старо-Краматорский Ордена Трудового Красного Знамени Машиностроительный Завод Им.Орджоникидзе | Правильный валок косовалковой машины |
DE2747331C2 (de) * | 1977-10-21 | 1982-07-22 | SMS Schloemann-Siemag AG, 4000 Düsseldorf | Vorrichtung zum Verstellen von Stützrollen |
JPS6195721A (ja) * | 1984-10-17 | 1986-05-14 | Mitsubishi Heavy Ind Ltd | ロ−ラレベラ |
CN86206021U (zh) | 1986-08-21 | 1987-11-07 | 大连第二建筑工程公司 | 钢模板校形机构 |
DE4308744A1 (de) | 1993-03-19 | 1994-09-22 | Schloemann Siemag Ag | Richtmaschine, insbesondere zum Richten von Blechen und Bändern |
JPH09225531A (ja) * | 1996-02-21 | 1997-09-02 | Kawasaki Steel Corp | 厚鋼板のローラレベラ |
CN1193836C (zh) * | 2001-10-19 | 2005-03-23 | 中国第二重型机械集团公司 | 板带材变辊距矫直机 |
CN1212205C (zh) * | 2003-09-04 | 2005-07-27 | 张先荣 | 增加辊式矫正机矫正能力的方法 |
JP2005254268A (ja) * | 2004-03-10 | 2005-09-22 | Jfe Steel Kk | 幅反り矯正機 |
DE102007006810B3 (de) | 2007-02-07 | 2008-10-02 | Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh | Vorrichtung zum Planieren von Metallbändern |
JP2010042423A (ja) * | 2008-08-11 | 2010-02-25 | Ntn Corp | バックアップロール装置 |
US9221088B2 (en) * | 2009-04-21 | 2015-12-29 | Fairmont Technologies, Llc | Stretch roll forming |
PL2475473T3 (pl) | 2009-09-09 | 2013-05-31 | Siemens Vai Metals Tech Sas | Prostownica z wieloma walcami |
WO2011092754A1 (ja) * | 2010-01-29 | 2011-08-04 | スチールプランテック株式会社 | ローラレベラ |
DE102012204074A1 (de) * | 2012-03-15 | 2013-09-19 | Sms Siemag Ag | Vorrichtung zum Richten von Metallband |
CN102909240B (zh) * | 2012-10-26 | 2015-04-15 | 南京新立讯电器有限责任公司 | 一种校平机 |
JP2015029992A (ja) * | 2013-07-31 | 2015-02-16 | Jfeスチール株式会社 | ローラーレベラによる鋼板の矯正方法及びローラーレベラ |
JP5954303B2 (ja) * | 2013-12-11 | 2016-07-20 | 住友電装株式会社 | 電線矯正装置 |
CN104384243A (zh) | 2014-09-30 | 2015-03-04 | 巢湖广丰金属制品有限公司 | 一种带钢表面缺陷局部整形设备 |
-
2015
- 2015-07-22 DE DE102015213788.0A patent/DE102015213788A1/de not_active Withdrawn
-
2016
- 2016-07-19 US US15/740,966 patent/US11179759B2/en active Active
- 2016-07-19 CN CN201680042947.6A patent/CN107921501B/zh active Active
- 2016-07-19 KR KR1020187000690A patent/KR102094764B1/ko active IP Right Grant
- 2016-07-19 WO PCT/EP2016/067142 patent/WO2017013099A1/de active Application Filing
- 2016-07-19 EP EP16741297.2A patent/EP3325186B1/de active Active
- 2016-07-19 JP JP2018502769A patent/JP6694502B2/ja active Active
- 2016-07-19 RU RU2017142734A patent/RU2703743C2/ru active
Also Published As
Publication number | Publication date |
---|---|
RU2017142734A3 (de) | 2019-08-22 |
KR102094764B1 (ko) | 2020-03-31 |
US20180185897A1 (en) | 2018-07-05 |
RU2703743C2 (ru) | 2019-10-22 |
CN107921501B (zh) | 2020-10-20 |
EP3325186B1 (de) | 2019-04-17 |
WO2017013099A1 (de) | 2017-01-26 |
JP6694502B2 (ja) | 2020-05-13 |
US11179759B2 (en) | 2021-11-23 |
DE102015213788A1 (de) | 2017-01-26 |
CN107921501A (zh) | 2018-04-17 |
RU2017142734A (ru) | 2019-08-22 |
KR20180048562A (ko) | 2018-05-10 |
JP2018527188A (ja) | 2018-09-20 |
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