EP4415898A1 - Ringwalzwerk und verfahren zum betreiben eines solchen - Google Patents
Ringwalzwerk und verfahren zum betreiben eines solchenInfo
- Publication number
- EP4415898A1 EP4415898A1 EP22808970.2A EP22808970A EP4415898A1 EP 4415898 A1 EP4415898 A1 EP 4415898A1 EP 22808970 A EP22808970 A EP 22808970A EP 4415898 A1 EP4415898 A1 EP 4415898A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- axial
- rolling
- ring
- rolling stock
- rolling mill
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H8/00—Rolling metal of indefinite length in repetitive shapes specially designed for the manufacture of particular objects, e.g. checkered sheets
- B21H8/02—Rolls of special shape
Definitions
- the invention relates to a ring rolling mill comprising a machine table for receiving the rolling stock and an axial stand which carries at least one axial roll, preferably two axial rolls, for rolling the end faces of the rolling stock. Furthermore, the invention relates to a method for operating such a ring rolling mill.
- a ring rolling mill of this type is known from US Pat. No. 2,307,191 A and is shown in FIG. 1 (once in a side view and once in a plan view).
- the ring rolling mill 1 has a machine table 2 on which the rolling stock 3 is placed in the form of a ring to be rolled.
- the ring 3 is radially rolled by a main roll 12 which cooperates with a dome roll 13 .
- the ring 3 is rolled axially by means of two axial rolls 5 and 6 which are mounted in an axial stand 4 . Accordingly, the outer periphery 11 of the rolled stock is rolled by the main roll 12, while the end faces 7 and 8 of the rolled stock are rolled by the two axial rolls 5 and 6.
- Centering rollers 14 and 15 are also provided, which are arranged on centering arms 17 and 18 and with which the rolling stock 3 is centered with respect to a longitudinal axis L of the machine.
- the axial frame also has rollers for contacting the outer circumference of the ring; however, these are firmly mounted on the axial stand and therefore move in the direction of the longitudinal axis of the machine together with the same.
- the invention is based on the object of developing a ring rolling mill of the type mentioned at the beginning and a method for its operation in such a way that it is possible to enable a quick product change without complex set-up or without converting the rolling mill.
- the solution to this problem provided by the invention is characterized in that at least one pressure roller, preferably two pressure rollers, is also arranged on the axial stand for rolling the outer circumference of the rolling stock, with the at least one pressure roller being arranged so as to be translationally displaceable relative to the axial stand.
- the ring rolling mill also includes the usual main roll and a dome roll, between which the rolling stock can be rolled. Furthermore, centering rollers can also be provided, with which the rolling stock can be centered with respect to a longitudinal machine axis.
- control and/or regulation means are arranged, with which the at least one pressure roller can be pressed against the rolling stock with a predetermined force or according to a predetermined translational infeed.
- Measuring means can also be arranged on the axial stand, with which the outside diameter of the rolling stock can be measured.
- the measuring means are formed by the two pressure rollers and a further measuring element.
- the further measuring element is preferably a roller or a laser measuring device.
- Advantageous rolling of the rolling stock is made possible by an embodiment of the invention in such a way that the direction of the translatory displacement of the at least one pressure roller and the longitudinal machine axis enclose an angle, the angle being between 0° and 55°, preferably between 25° and 55°.
- Another particularly advantageous mode of operation is possible in that the direction of the translational displacement of the at least one pressure roller intersects the longitudinal machine axis at a first point, with the at least one axial roller having an axis which intersects the longitudinal machine axis at a second point, the first point being closer on the axial frame is the second point.
- the proposed method for operating a ring rolling mill comprising a machine table for receiving the rolling stock, a main roll and a dome roll between which the rolling stock can be rolled, and an axial stand which carries at least one axial roll, preferably two axial rolls, for rolling the end faces of the rolling stock , is characterized according to the invention in that the rolling stock is rolled by means of the at least one axial roll and by means of at least one pressure roller, preferably by means of two pressure rollers, for rolling the outer circumference of the rolling stock, the at least one pressure roller being displaced translationally relative to the axial stand when the rolling stock is rolled and wherein when the rolling stock is rolled, the main roll and the dome roll do not contact the rolling stock.
- This procedure can be further developed by the above-mentioned design of the ring rolling mill.
- an additional device for axially profiled flow-forming is provided for a previously known ring rolling mill, ie for radial-axial ring rolling.
- the proposed additional device can be used to expand the product range of a ring rolling mill.
- This is a pressure roller device that is mounted in or on the axial frame.
- radially and axially symmetrical and asymmetrical disc or ring products can be manufactured by a combined axial and radial deformation taking place in the axial stand.
- the radial slide ie the arrangement with main roll and mandrel roll for forming the nip for the radial rolling of the ring
- the radial slide is not engaged according to a preferred embodiment of the operation of the proposed ring rolling mill.
- the additional device is a process combination of spinning and ring rolling.
- an essential aspect of the proposed solution is the positioning of the pressure rollers, through which the outer wall thickness of the rolling stock is reduced in its cross section. This positioning is effected in particular in relation to displacement and force, in that the pressure rollers position the rolling stock against the flanks of the axial tool, thereby reducing the wall thickness and thereby deforming the rolling stock.
- the two pressure rollers are positioned on the so-called entry/exit side of the axial caliber. Due to the independent positioning of the pressure rollers, the rolling stock - clamped in the axial caliber (i.e. between the axial rollers) - can be shifted. This influence has a significant impact on the achievable rolling stock geometry.
- the outer diameter of the rolling stock is preferably recorded.
- the forming process is switched off.
- the diameter is usually recorded by measuring the distance between the stationary main roll and the ring position in the axial caliber with the help of a measuring point (usually using a feeler roller or using a laser).
- a measuring point usually using a feeler roller or using a laser.
- a different measuring method is therefore proposed for this purpose, which is necessary for detecting the diameter.
- at least three specific positions on the circumference of the ring are recorded, two of which are specified by the two pressure rollers; the position of the ring within the axial stand is used as the third signal.
- the third signal preferably comes from a feeler roller or a laser, which are usually already present in the ring rolling mill.
- the proposed additional device thus enables a quick product change without complex set-up or without converting the machine.
- the preferred arrangement of the pressure rollers in relation to their direction of displacement relative to the axial frame and in relation to the geometry of the axial rollers enables the continuous reduction of the outer wall thickness through which the forming process takes place.
- the separate delivery of the pressure rollers enables the product to be shifted to increase the quality of the rolled product geometry. Due to the mentioned geometry between the displacement direction of the pressure rolls, the wall thickness of the rolling stock can be actively reduced - even without the use of main and dome rolls. A displacement of the rolling stock clamped in the axial roll gap (i.e. between the two axial rolls) is possible.
- the outer diameter can be recorded in a simple manner by using another measuring element in addition to the pressure rollers.
- the necessary power requirement on the pressure rollers can be specified via the process control.
- FIG. 2 shows a schematic perspective representation of the axial stand of the ring rolling mill according to an embodiment of the invention, in which two pressure rollers are arranged displaceably in or on the axial stand,
- FIG. 3 is a schematic top view of the axial frame according to FIG. 2 showing relevant geometric parameters
- FIG. 4 shows a schematic plan view of the axial stand according to FIG. 2, showing a measuring arrangement for determining the outside diameter of the rolling stock.
- FIG. 2 it can be seen that, in contrast to the previously known solution mentioned, (preferably two) pressure rollers 9 and 10 are now also arranged on the axial stand 4, which are used for rolling the outer circumference 11 of the Rolling stock 3 are used. What is essential here is that the pressure rollers 9 and 10 are arranged so as to be translationally displaceable relative to the axial stand 4 .
- the translatory infeed with which the pressure rollers 9 and 10 are moved relative to the axial frame is marked in FIG. 2 with Z1 and Z2.
- Figure 3 illustrates which geometric conditions are particularly preferred in order to roll the rolling stock 3 and thereby reduce the area of the wall thickness of the rolling stock 3 in such a way that the cross section is stretched, leading to an increase in the outer diameter D (see Figure 4) leads.
- the axial stand 4 carries the axial rollers 5 and 6 and the two pressure rollers 9 and 10, which are each displaced in a translatory direction T relative to the axial stand 4 (this is done by means of actuators that are not shown).
- the direction of the axis a of the axial rollers 5, 6 coincides with the longitudinal axis L of the machine in the plan view.
- the direction T encloses an angle a with the longitudinal machine axis L, which is approximately 35° in the exemplary embodiment. Values for the angle a between 25° and 55° are preferred.
- the point of intersection between the direction T and the machine longitudinal axis L is entered as the first point P1 in FIG.
- first point P1 is closer to the axial stand 4 than the second point P2.
- the pressure rollers 9, 10 are thus arranged outside of the longitudinal axis L of the machine.
- the angle a between the direction T and the longitudinal machine axis L is an essential parameter when rolling the Ring relevant.
- Another relevant parameter is the relative position between the first point P1 and the second point P2 in relation to the axial stand 4. If this is done in the manner described and shown in Figure 3, a continuous infeed of the pressure rollers 9, 10 in Direction T against the ring cross-section.
- the area of the wall thickness of the rolling stock can be reduced, from which an elongation of the cross section leads to an increase in diameter.
- the rolling of the ring is stopped as soon as a desired outside diameter D of the rolling stock 3 has been reached. Reference is made to FIG. 4 for the relevant measurement.
- FIG. 4 shows that there is a further measuring element 16, here in the form of a measuring roller, with which a third measuring point M3 can be detected.
- the pressure rollers 9, 10 can be continuously advanced in the direction of delivery Z1, Z2, while at the same time the outer diameter D of the rolling stock 3 increases.
- the pressure rollers can be arranged on the side walls of the axial stand, but alternatively also between the side walls or outside of them.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Metal Rolling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021211516.0A DE102021211516A1 (de) | 2021-10-13 | 2021-10-13 | Ringwalzwerk und Verfahren zum Betreiben eines solchen |
| PCT/EP2022/078220 WO2023061995A1 (de) | 2021-10-13 | 2022-10-11 | Ringwalzwerk und verfahren zum betreiben eines solchen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4415898A1 true EP4415898A1 (de) | 2024-08-21 |
Family
ID=84360661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22808970.2A Pending EP4415898A1 (de) | 2021-10-13 | 2022-10-11 | Ringwalzwerk und verfahren zum betreiben eines solchen |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20240383030A1 (de) |
| EP (1) | EP4415898A1 (de) |
| JP (1) | JP2024533834A (de) |
| KR (1) | KR20240046199A (de) |
| CN (1) | CN117980088A (de) |
| DE (1) | DE102021211516A1 (de) |
| WO (1) | WO2023061995A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118237516B (zh) * | 2024-05-29 | 2024-07-19 | 山西天宝集团有限公司 | 新能源风力发电法兰生产用便于移动料坏的装置及其方法 |
| CN120095075B (zh) * | 2025-03-14 | 2025-12-02 | 河南速轮轨道交通装备有限公司 | 一种车轮热轧定心扩辐机构 |
| CN120155521B (zh) * | 2025-04-01 | 2025-12-12 | 河南速轮轨道交通装备有限公司 | 一种车轮轧机热轧系统 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2307191A (en) | 1938-12-14 | 1943-01-05 | Edgewater Steel Corp | Apparatus for rolling internally flanged annuli |
| DE2222607A1 (de) * | 1972-05-09 | 1973-11-22 | Rheinstahl Ag | Ringwalzwerk |
| DE2222608C2 (de) * | 1972-05-09 | 1984-07-05 | Thyssen Industrie Ag, 4300 Essen | Ringwalzwerk |
| DE2530519A1 (de) * | 1975-07-09 | 1977-01-27 | Rheinstahl Ag | Axial-ringwalzwerk |
| JPS546856A (en) * | 1977-06-20 | 1979-01-19 | Mitsubishi Heavy Ind Ltd | Ring rolling mill |
| DE2923001A1 (de) | 1979-06-07 | 1981-01-22 | Thyssen Industrie | Ringwalzmaschine mit dornwalzen- revolverkopf |
| JPS5847345U (ja) * | 1981-09-24 | 1983-03-30 | 住友金属工業株式会社 | リング圧延機用ガイドロ−ル押圧力調整装置 |
| JPS632528A (ja) * | 1986-06-20 | 1988-01-07 | Kobe Steel Ltd | リング材加工の制御方法 |
| JPH01157736A (ja) * | 1987-12-14 | 1989-06-21 | Kobe Steel Ltd | リング圧延における外径計測方法及びその装置 |
| DE19509912B4 (de) | 1995-03-18 | 2004-11-11 | Bad Düben Profilwalzmaschinen GmbH | Verfahren und Vorrichtung zum zielgerichteten Einbringung von Spannungen beim Walzen von Ringen |
| KR100873305B1 (ko) * | 2008-05-21 | 2008-12-09 | 벤다선광공업 주식회사 | 차량용 링 부품 제조장치 및 방법 |
| JP6650110B2 (ja) * | 2015-03-31 | 2020-02-19 | 日立金属株式会社 | リングローリングミルおよびリング圧延材の製造方法 |
| JP6196414B1 (ja) * | 2015-12-03 | 2017-09-13 | 日立金属Mmcスーパーアロイ株式会社 | リング圧延体の製造方法 |
-
2021
- 2021-10-13 DE DE102021211516.0A patent/DE102021211516A1/de active Pending
-
2022
- 2022-10-11 CN CN202280063543.0A patent/CN117980088A/zh active Pending
- 2022-10-11 JP JP2024520018A patent/JP2024533834A/ja active Pending
- 2022-10-11 WO PCT/EP2022/078220 patent/WO2023061995A1/de not_active Ceased
- 2022-10-11 EP EP22808970.2A patent/EP4415898A1/de active Pending
- 2022-10-11 KR KR1020247007209A patent/KR20240046199A/ko active Pending
- 2022-10-11 US US18/690,091 patent/US20240383030A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023061995A1 (de) | 2023-04-20 |
| CN117980088A (zh) | 2024-05-03 |
| DE102021211516A1 (de) | 2023-04-13 |
| JP2024533834A (ja) | 2024-09-12 |
| KR20240046199A (ko) | 2024-04-08 |
| US20240383030A1 (en) | 2024-11-21 |
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