EP2734318A1 - Roll for a ring rolling mill - Google Patents
Roll for a ring rolling millInfo
- Publication number
- EP2734318A1 EP2734318A1 EP12735873.7A EP12735873A EP2734318A1 EP 2734318 A1 EP2734318 A1 EP 2734318A1 EP 12735873 A EP12735873 A EP 12735873A EP 2734318 A1 EP2734318 A1 EP 2734318A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- cap
- roll
- conical
- 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.)
- Granted
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 28
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 229910045601 alloy Inorganic materials 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
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
Definitions
- the invention relates to a roller for a ring rolling mill.
- a ring rolling mill is a rolling mill, with which ring blanks are rolled by radial expansion into rings of the desired cross-section.
- the ring blanks are obtained z. B. by upsetting, punching and / or forging.
- Such a ring rolling mill generally has at least one driven main roller or plate roller acting on the ring outer side and a mandrel roller or a roller mandrel acting on the ring inner side.
- On the ring end faces usually act two axial rolls z. B. be referred to as upper axial roller and lower axial roller.
- These axial rollers are generally conical in shape, they are also referred to as tapered rollers. Structure and operation of such ring rolling mills have long been known. This also applies to the usual drives.
- Ring rolling mills of the type described above are z. B. from DE 1 188 544 or DE 1 019 635 known.
- the invention has for its object to provide a roller for a ring mill, which can be economically and variably produced and used. In particular, an economical processing in the high temperature range should be possible.
- the invention teaches in a generic roller for a ring rolling mill, that the rollers have a roller body and a patch on the roller body roller cap.
- This roller cap is detachably and interchangeably mounted on the roller body, z. B. plugged or postponed.
- This principle can basically be used for all rolls of the ring rolling mill.
- the invention particularly preferably relates to an axial roller and consequent roller of such a ring rolling mill.
- the roller cap has a conical outer surface, which forms the working surface.
- the roller cap has an inner surface which rests against the outer surface of the roller body. Also, this inner surface is preferably formed conical, so that the roller cap is formed in a particularly preferred embodiment, a hollow cone-shaped or cone-shaped with predetermined wall thickness.
- the invention is based on the recognition that a separately exchangeable component is made available by realization of the roller cap,
- the roll cap in particular for hot forming at high temperatures, it is possible to produce the roll cap from a higher-alloyed hot-work steel or a nickel-based alloy, without it being necessary to produce the roll main body and in particular also the shaft from such a material.
- higher-alloyed hot-work steels and in particular nickel-based alloys are significantly more expensive than "simple" work steels or hot-work steels, the rolls can be produced significantly more cheaply overall.
- conventional rollers for. B. tapered rollers total weight of several tons, z. B. more than 10 tons.
- the inventively proposed roller cap has a significantly lower weight, so that it can also be produced significantly cheaper.
- the inventive design with separately replaceable roller cap also has the advantage that the heat transfer is reduced by the separation point or separation surface between the roller cap and roller body, so that it can be prevented that high temperatures migrate into the bearings of the roller assembly.
- the invention proposes, in a preferred embodiment, that the basic roller body is formed integrally with the shaft, wherein the roller body is then formed by a conical shaft end becomes.
- the roller cap can be placed as a replacement part.
- the roller cap is preferably clamped with at least one clamping means against the base body.
- the roller cap can be clamped with at least one pull rod against the roller body, z.
- the roller cap may have a hollow conical or conical annular shape and may have a conical inner surface which abuts against a conical outer surface of the roller base body or the shaft.
- the invention proposes that the roller cap has an inner cylindrical threaded portion, preferably followed by the conical inner surface of the roller cap. In this cylindrical
- Threaded section can screw a cylindrical tie rod, which then passes through the roller body and the shaft and the transmission side is braced.
- the roller cap on the one hand and the roller base body on the other hand are made of the same material.
- the invention makes it possible in a particularly advantageous embodiment that the roller cap is made of a different material than the roller body and the shaft. This is particularly useful for Hochtemperaturan- turns, because the roller cap then - as already explained - from temperature-resistant alloys, eg. As a high-alloy hot-work steel or a nickel-based alloy can be produced. The costs can thus be significantly reduced overall.
- the cap may be formed of a material with high thermal conductivity, in which case a heating to prevent heat loss is possible.
- the cap may be formed of a low thermal conductivity material or a heat insulating material to prevent heat loss.
- the invention also relates to a ring rolling mill with at least one roll of the type described.
- the invention relates in particular to a ring rolling mill with at least main roll, mandrel roll and upper axial roll and lower axial roll, preferably at least the upper axial roll and / or the lower axial roll in the manner according to the invention are configured with roller cap.
- FIG. 1 schematically shows a section through a ring rolling mill with inventive axial rollers
- Fig. 2 is a simplified perspective view of an axial roller.
- a ring rolling mill is shown simplified in its basic structure.
- the ring rolling mill is used to produce seamless rings that are rolled out of a ring blank.
- the ring blank Rist in Fig. 1 only partially indicated.
- the ring rolling mill has in its basic structure a main roll 1, a mandrel roll 2, an upper tapered roll 3 and a lower tapered roll 4.
- the tapered rollers 3, 4 work on the ring end faces. Between these tapered rollers an axial rolling gap is formed.
- the tapered rollers 3, 4 are therefore also referred to as axial rollers 3, 4.
- the main roll 1 and the mandrel roll 2 thus form a pair of rolls, while the axial roll 3 and the axial roll 4 form a further pair of rolls, wherein at least one roll of these pairs of rolls is driven.
- the drives are merely indicated in the figures, they can be configured in a conventional manner.
- a drive 16 is shown, which operates via a gear 17 on the roller.
- At least one of the axial rolls 3, 4 has a roll main body 5 and a roll cap 6 which is placed on the roll main body 5.
- Fig. 1 this is shown by the example of the lower axial roller 4.
- the upper axial roller 3 can be designed identically and consequently also be equipped with roller cap 6 (and possibly also with drive).
- the roller cap 6 is detachably and interchangeably placed on the roller body 5, namely pushed or plugged.
- the roller cap 6 is clamped with a clamping means 10 against the base body 5, namely with a pull rod 10, which is clamped hydraulically in the embodiment with a hydraulic nut 15 against the roller body.
- the roller base body 5 is formed integrally with the shaft 7 of the roller and that on this one-piece unit of roller base body 5 and shaft 7, the separately prepared roller cap 6 is placed.
- the roller cap 6 has not only a conical outer surface 8 as a working surface, but also a conical inner surface 9, d. h.,
- the roller cap 6 is formed as a conical-ring-shaped cap with a predetermined wall thickness.
- the roller base body 5 has a conical outer surface 12, d. h.,
- the roller base body 5 is formed by the conical end of the shaft 7, so that the roller cap 6 is put in other words on the conical end 5 of the shaft 7.
- the invention thus provides a separately replaceable wearing part as a roller cap 6 available.
- Roller body 5 and shaft 7 are provided with a central opening 13 through which the pull rod 10 is passed.
- the roller cap 6 has on the inside a cylindrical threaded portion 1 1.
- the tie rod 10 which is end provided with an external thread, can be screwed.
- a hydraulic nut 15 is indicated, with which the roller cap is clamped by means of the tie rod 10 against the roller body 5.
- the inventive design with separately replaceable roller cap 6 makes it possible in particular to manufacture the roller cap 6 made of a different material than the roller body 5 and the shaft 7. This is particularly advantageous because the overall arrangement of the roller 3, 4 a high weight of z , B. has more than 10 tons. In the course of the usual wear, it is then not necessary to replace the entire roller 3, 4, but it must be done only the replacement of the roller cap 6. The handling is simplified, so that the exchange can be realized easier and faster. The operating costs can be reduced overall, since the wear part, namely the cap, can be produced much cheaper. This in turn makes it possible to produce a roller cap in high quality, since the additional cost of high quality material must be applied only to the roller cap and not for the entire roller assembly.
- the roller cap has z. B. a wall thickness of more than 50 mm, preferably more than 100 mm.
- the end-side opening of the cap, in which the conical end of the shaft or the roller base body is immersed, has a diameter of more than 200 mm, preferably more
- the pull rod may have a diameter of more than 100 mm, preferably more than 150 mm. It becomes clear that the rollers or roller caps are bulky, heavy components.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201110108113 DE102011108113A1 (en) | 2011-07-21 | 2011-07-21 | Roller for a ring rolling mill |
PCT/EP2012/063845 WO2013010961A1 (en) | 2011-07-21 | 2012-07-13 | Roll for a ring rolling mill |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2734318A1 true EP2734318A1 (en) | 2014-05-28 |
EP2734318B1 EP2734318B1 (en) | 2017-01-04 |
Family
ID=46516750
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12735873.7A Active EP2734318B1 (en) | 2011-07-21 | 2012-07-13 | Roll for a ring rolling mill |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2734318B1 (en) |
DE (1) | DE102011108113A1 (en) |
WO (1) | WO2013010961A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014005085A1 (en) | 2014-04-08 | 2015-10-08 | Sms Meer Gmbh | Multi-roll table-type rolling mill and method of rolling rings in a multi-roll table-type rolling mill |
PL239801B1 (en) | 2020-03-25 | 2022-01-10 | Zarmen Fpa Spolka Z Ograniczona Odpowiedzialnoscia | Method of shaping seamless rings in the rolling process and a unit for shaping seamless rings in the rolling process |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE54323C (en) | J. munton in Maywood, County of Cook, Staat Illinois, V. St. A | Wheel tire rolling mill | ||
US1781140A (en) | 1923-12-10 | 1930-11-11 | Taylor James Hall | Universal ring-rolling machine |
DE1019635B (en) | 1956-08-08 | 1957-11-21 | Wagner & Co Werkzeugmaschinenf | Ring rolling mill |
DE1188544B (en) | 1961-12-22 | 1965-03-11 | Wagner & Co Werkzeugmaschinenf | Four-roll ring rolling mill with automatically adjustable axial rolls |
DE2009867C3 (en) | 1970-03-03 | 1978-08-03 | Schloemann-Siemag Ag, 4000 Duesseldorf | Rolling head with overhung rolls inclined towards the rolling stock axis |
DE2222606C2 (en) | 1972-05-09 | 1985-06-27 | Thyssen Industrie Ag, 4300 Essen | Ring rolling mill |
JPS5641862Y2 (en) * | 1977-07-13 | 1981-09-30 | ||
JPS5421635A (en) | 1977-07-19 | 1979-02-19 | Mitsubishi Electric Corp | Induction heated cooking appliance |
DE3043937A1 (en) | 1980-11-21 | 1982-07-22 | SMS Schloemann-Siemag AG, 4000 Düsseldorf | Planetary skew rolling mill bevel rollers - have detachable head sections for shaping small dia. workpieces |
DE3229201A1 (en) | 1982-08-05 | 1984-02-09 | SMS Schloemann-Siemag AG, 4000 Düsseldorf | Tapered roll of a planetary skew-rolling mill |
DE3229211A1 (en) | 1982-08-05 | 1984-02-09 | SMS Schloemann-Siemag AG, 4000 Düsseldorf | ROLLING HEAD OF A PLANETE SCHRAEG ROLLING MILL |
DE3840020A1 (en) | 1988-11-26 | 1990-05-31 | Thyssen Industrie | Radial die rolling machine |
DE3902784A1 (en) | 1989-01-31 | 1990-08-02 | Esw Roehrenwerke Gmbh | Work roll for a planetary cross-rolling mill |
DE202010014708U1 (en) | 2010-10-25 | 2011-01-20 | C. Groene Consulting, Unip Lda | Axial / radial ring rolling mill |
-
2011
- 2011-07-21 DE DE201110108113 patent/DE102011108113A1/en not_active Withdrawn
-
2012
- 2012-07-13 EP EP12735873.7A patent/EP2734318B1/en active Active
- 2012-07-13 WO PCT/EP2012/063845 patent/WO2013010961A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2013010961A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2013010961A1 (en) | 2013-01-24 |
DE102011108113A1 (en) | 2013-01-24 |
EP2734318B1 (en) | 2017-01-04 |
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