EP2785475A1 - Installation part and method for the production thereof - Google Patents
Installation part and method for the production thereofInfo
- Publication number
- EP2785475A1 EP2785475A1 EP12794311.6A EP12794311A EP2785475A1 EP 2785475 A1 EP2785475 A1 EP 2785475A1 EP 12794311 A EP12794311 A EP 12794311A EP 2785475 A1 EP2785475 A1 EP 2785475A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chock
- lubricant
- roll
- installation part
- collecting space
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000000034 method Methods 0.000 title claims description 4
- 238000009434 installation Methods 0.000 title abstract 9
- 239000000314 lubricant Substances 0.000 claims abstract description 51
- 230000013011 mating Effects 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 4
- 238000003801 milling Methods 0.000 claims description 4
- 239000004519 grease Substances 0.000 claims 1
- 238000000465 moulding Methods 0.000 claims 1
- 210000003739 neck Anatomy 0.000 claims 1
- 238000005096 rolling process Methods 0.000 description 10
- 238000007789 sealing Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 230000001050 lubricating effect Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 241001397809 Hakea leucoptera Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 210000001331 nose Anatomy 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/07—Adaptation of roll neck bearings
- B21B31/074—Oil film bearings, e.g. "Morgoil" bearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/06—Lubricating, cooling or heating rolls
Definitions
- the invention relates to a chock, that is a bearing housing, for supporting an upper support roll in a rolling stand, typically for hot rolling or cold rolling of metal strip.
- the invention further relates to a method for producing this chock. Chocks for supporting back-up rolls in rolling stands are known in the prior art.
- a chock for supporting an upper back-up roll in a rolling stand is also disclosed in international patent application WO 2007/1 15791 A1.
- the chock shown there reveals a main bore extending from the discharge side to the bale side of the chock for receiving a roll neck of the upper support roll.
- the chock further includes a arranged on the ball side lubricant collecting space, in particular in the lower portion of the chock, wherein the lubricant collecting space are arranged two mirror symmetry to a vertical longitudinal central plane arranged lubricant drain holes, which extend from the lubricant collecting space on the ball side towards the discharge side of the chock.
- the centers of these two lubricant drain holes have a distance from each other which is greater than the diameter of the main bore.
- the invention has the object, a known chock and a known method for its production in such a way that - in a cross-sectional view of the chock transverse to the longitudinal direction of the roller to be stored - in the right and left lower corner the chock recesses can be provided.
- the chock is characterized in that - seen in cross-section of the bale side - the lubricant drain hole is arranged so that the distance of the center of the lubricant drain hole to the vertical longitudinal center plane of the chock ⁇ half the diameter of the main bore and that - in the vertical longitudinal Center plane - the vertical minimum distance from the mating surface of a ring seal in the lower area of the chock to the horizontal tangential plane at the upper edge of the lubricant drain hole does not fall below a predetermined minimum distance threshold.
- the mating surface of the ring seal corresponds - in the assembled state of the chock and roller - the outer shell of a spigot bushing extension to which the ring seal is applied.
- the width of the chock in the lower area at least on the bale side it is possible to greatly reduce the width of the chock in the lower area at least on the bale side, so that recesses can be provided in the right and left lower corner region of the chock, for example for receiving negative-acting bending cylinders , While the first When the claimed criterion essentially defines the remaining width of the upper chock in the lower region, the second criterion ensures that the ball-side seal remains fully functional. This means that the forming oil sump does not rise so much that the spigot bushing extension rotates in this oil stump, which would result in leakage.
- the terms “bottom” and “top”, “vertical” and “horizontal” are used. These terms are used to describe the position of individual technical features of the chock or to describe the relative positions of individual technical features to each other. When using these terms, it is assumed that the chock is placed on a horizontal plane. In the illustrations in FIGS. 1 to 6, it can be assumed that the chock is placed, for example, on a horizontal plane or, as shown in FIG. 1, is mounted horizontally in the roll stand.
- the chock on its bale side an annular circumferential seal retaining ring for holding a ring seal.
- This seal retaining ring is inventively formed integrally with the chock.
- this seal retainer ring was often bolted to the chock in the form of a lid. This was technically more complex because the lid had to be made as a separate component.
- the assembly and disassembly of this cover was time consuming and therefore also costly.
- one-piece design of the seal retaining ring with the chock in the form of a one-piece casting advantageously eliminates the need for separate production of the lid and the time-consuming and costly assembly and disassembly of the lid.
- the ring seal is used to seal the chock against the roll neck or the pin bushing extension.
- the ring seal also serves to seal the lubricant collecting space against the bale of the upper backup roll.
- the chock in the region of the lubricant collecting space on two of the lubricant drain holes, which are arranged mirror-symmetrically to the vertical longitudinal center plane.
- the provision of the two lubricant drain holes ensures the drain for the lubricant.
- the formation of the lubricant collecting space according to a further embodiment of the invention as on the ball side annular groove which has a widening in the lower portion of the chock offers the advantage that circumferentially from the gap between the bearing bush and pin bushing escaping lubricant can be received anywhere on the periphery. Furthermore, the expansion offers the advantage that, in particular in the lower region of the chock, where due to the weight accumulates particularly much leaked lubricant, enough space for the accumulated lubricant is available.
- the expansion can be easily provided in the lower area of the chock on the ball side and from a design point of view, because there are no particularly large rolling forces in the lower area.
- the rolling force acts upwards in the upper back-up roll and in the chocks receiving it, that is, in the upper region of the chocks, as known in the art.
- the chock comprises a cylindrical bushing inserted into its main bore.
- the wall of the chock which faces away from the ball end and delimits the lubricant collecting space, extends radially smoothly, as viewed from the longitudinal axis of the chock. It is important that the inside of the chock is as possible over its entire width non-positively and positively connected to the bearing bush.
- the wall according to the invention due to its radially smooth design, does not have projections or noses extending toward the roll barrel side, which are not positively and / or non-positively connected with the bearing bush.
- the inventive design an optimal power flow is ensured by the pins of the support roller on the journal bushings, the bushings into the chock; this would not necessarily be given in providing the known lugs or projections.
- the annular lubricant collecting space and its expansion are produced according to the invention by milling the previously cast chock.
- the lubricant drain hole can be easily made by drilling the casted chock. The milling and drilling allows a geometrically very precise design of the lubricant collecting space, of its widening and the Abiaufbohronne.
- Figure 1 shows a cross section through a stator window of a rolling mill stand
- FIG. 2 is a perspective view of the chock according to the invention with a view of the bale side;
- FIG. 3 shows the chock according to FIG. 2 in the cut-open state;
- Figure 4 shows the chock according to the invention in a longitudinal section;
- Figure 5 shows the chock according to the invention in a cross section through the
- FIG. 1 shows a cross section through a stator window of a rolling stand.
- the stator window is designated by reference numeral 850.
- an upper work roll 860 and a lower work roll 870 can be seen, which are each rotatably mounted in their work roll chocks 862, 872 and vertically slidably mounted in the stator window 850.
- the lower work roll 870 is associated with a lower backup roll 880, which in turn is rotatably mounted in a lower backup roll chock 890.
- the upper work roll 860 is associated with an upper support roll 200, which in turn is rotatably mounted in an upper backup roll chock 100 and is preferably vertically displaceable in the stand window 850.
- Figure 1 shows that in the cross section shown through the stator window, the upper backup roll chock in its left and right lower corners, respectively Has recesses 700 to create space, for example, for the arrangement of negative-acting bending cylinders 895, which are typically fixedly mounted on the stator window.
- FIG 2 shows a perspective view of the upper backup roll chock 100.
- the bale side 100-B of the chock is shown; this is the side which later faces the bale of the back-up roll when the back-up roll is installed.
- Opposite the bale side is the discharge side 100-A of the chock, so named because there the lubricant collected in the annular lubricant collection space 120 and its expansion 120-1 during the rolling operation runs through the lubricant drain holes 130.
- the space can be used, for example, to provide the said negative-acting bending cylinder 895th
- FIG. 3 shows the chock from FIG. 2 in the cut-open state.
- a sealing retaining ring 140 can be seen here, which according to the invention is formed integrally with the chock. Preferably, it is poured when pouring the chock with equal.
- the seal retaining ring 140 is used to receive a ring seal 400 as explained later in Figure 6 in more detail.
- FIG. 3 an inside 105 of the chock can be seen in Figure 3, to which a bearing bush 160 is positively and positively abut; see Figure 6.
- Figure 6 the side facing away from the bale side of the groove-shaped circumferential lubricant collecting space 120 is designated by the reference numeral 30 106.
- This wall is according to the invention - with respect to the longitudinal axis L of the chock - radially smooth.
- Figure 4 shows the chock according to the invention in a longitudinal section through the longitudinal axis L.
- the diameter D of the main bore 1 10 of the chock can be seen.
- Figure 5 shows a cross section through the chock for the upper support roller on the operator side.
- the distance d can be seen, which defines the distance of the center point of one of the lubricant outflow bores 130 to the vertical longitudinal center plane LM of the chock 100.
- this distance d ⁇ half the diameter D of the main bore 1 10 of the chock must be without a bearing bush in order to be able to reduce the width of the chock in the lower region to such an extent that the desired recesses 700 can be realized.
- the vertical minimum distance s from the outer surface of the plug bushing extension 232, see Figure 6, also run diameter or mating surface 600 called for the ring seal 400, in the lower region of the chock to a horizontal tangent plane 500 at the upper edge of the lubricant drain holes 130 does not fall below a predetermined minimum distance threshold.
- the minimum distance threshold for the distance s is, for example, 2 mm; For example, 10 mm can be used as the upper limit for this distance.
- the upper backup roll 200 includes a roll barrel 210 and a roll neck 220-1. Rotatably mounted on the roll neck is a spigot bushing 230 having a bolt journal extension 232 extending in the direction of the roll bale.
- the backing roll 200 with the roll neck 220-1 and the spigot bushing 230 is rotatably mounted in the bearing bush 160.
- a lubricating film 205 is formed, from which during the rolling operation lubricant exits into the lubricant collecting space 120 and its expansion 120-1.
- the bearing bush 160 is rotatably mounted in the main bore 1 10 of the chock 100.
- FIG. 6 also shows the seal retaining ring 140, which is connected in one piece with the chock 100.
- the seal retaining ring 140 serves to receive the annular seal 400, which rests with its sealing lips on the spigot bushing extension 232 and here the sealing function in both directions (prevent lubricating oil at the outlet towards roll bale and cooling water with possibly dirt not in the lubricating oil space, that is the lubricant collecting space to let pass).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201110087605 DE102011087605A1 (en) | 2011-12-01 | 2011-12-01 | Chock and process for its manufacture |
PCT/EP2012/073786 WO2013079503A1 (en) | 2011-12-01 | 2012-11-28 | Installation part and method for the production thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2785475A1 true EP2785475A1 (en) | 2014-10-08 |
EP2785475B1 EP2785475B1 (en) | 2015-09-16 |
Family
ID=47263351
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12794311.6A Active EP2785475B1 (en) | 2011-12-01 | 2012-11-28 | Installation part |
Country Status (8)
Country | Link |
---|---|
US (1) | US9162266B2 (en) |
EP (1) | EP2785475B1 (en) |
JP (1) | JP5806415B2 (en) |
CN (1) | CN104114295B (en) |
DE (1) | DE102011087605A1 (en) |
IN (1) | IN2014CN04863A (en) |
RU (1) | RU2573156C1 (en) |
WO (1) | WO2013079503A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012224511A1 (en) * | 2012-12-28 | 2014-07-03 | Sms Siemag Ag | Chock for storing a roll in a roll stand |
DE102015209637A1 (en) * | 2015-05-26 | 2016-12-01 | Sms Group Gmbh | roll arrangement |
EP3766595A1 (en) * | 2019-07-17 | 2021-01-20 | Primetals Technologies Austria GmbH | Cold rolling of rolled material |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU801918A1 (en) * | 1979-03-19 | 1981-02-07 | Предприятие П/Я В-2869 | Rolling mill roll hydrodynamic support |
US4772137A (en) | 1987-03-30 | 1988-09-20 | Morgan Construction Company | Oil film bearing and bushing |
US4944609A (en) * | 1987-03-30 | 1990-07-31 | Morgan Construction Company | Oil film bearing and bushing |
RU2176939C2 (en) * | 1998-02-18 | 2001-12-20 | Открытое акционерное общество "Электростальский завод тяжелого машиностроения" | Hydrostatodynamic liquid-friction bearing assembly for rolls of rolling mills |
JP4341103B2 (en) * | 1999-03-17 | 2009-10-07 | Jfeスチール株式会社 | Oil film bearing |
CN2427285Y (en) * | 2000-04-28 | 2001-04-25 | 太原重型机械(集团)有限公司 | Filmatic bearing with quick locking device |
IT1315161B1 (en) * | 2000-12-29 | 2003-02-03 | Danieli Off Mecc | RING SEAL FOR ROLLING CYLINDERS |
DE10302271B4 (en) | 2003-01-22 | 2014-06-18 | Sms Siemag Aktiengesellschaft | Chock for receiving a roll neck |
US6783131B2 (en) | 2003-01-31 | 2004-08-31 | Morgan Construction Company | Neck seal |
DE102004003763B4 (en) | 2004-01-23 | 2005-10-20 | Sms Demag Ag | Device for ball-side sealing of the bearing of a roll neck |
KR100643172B1 (en) * | 2005-06-16 | 2006-11-10 | 주식회사 경도공업 | Sealling structure of roll chock |
DE102006016714A1 (en) | 2006-04-08 | 2007-10-11 | Sms Demag Ag | Chock for receiving a roll neck |
CN2923075Y (en) * | 2006-05-10 | 2007-07-18 | 傅锐 | Device for preventing milling roller end-part leaking oil |
US7500374B2 (en) * | 2007-04-03 | 2009-03-10 | Morgan Construction Company | Apparatus for urging an oil film bearing onto and off of a roll neck in a rolling mill |
CN101457794A (en) * | 2009-01-04 | 2009-06-17 | 上海大学 | Oil film bearing for intelligent rolling mill |
CN201442010U (en) * | 2009-06-24 | 2010-04-28 | 鞍钢股份有限公司 | Sealing device for oil film bearing of support roller |
-
2011
- 2011-12-01 DE DE201110087605 patent/DE102011087605A1/en not_active Withdrawn
-
2012
- 2012-11-28 WO PCT/EP2012/073786 patent/WO2013079503A1/en active Application Filing
- 2012-11-28 JP JP2014543870A patent/JP5806415B2/en active Active
- 2012-11-28 EP EP12794311.6A patent/EP2785475B1/en active Active
- 2012-11-28 US US14/361,714 patent/US9162266B2/en active Active
- 2012-11-28 IN IN4863CHN2014 patent/IN2014CN04863A/en unknown
- 2012-11-28 CN CN201280067135.9A patent/CN104114295B/en active Active
- 2012-11-28 RU RU2014126586/02A patent/RU2573156C1/en active
Non-Patent Citations (1)
Title |
---|
See references of WO2013079503A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102011087605A1 (en) | 2013-06-06 |
IN2014CN04863A (en) | 2015-09-18 |
JP2015500143A (en) | 2015-01-05 |
EP2785475B1 (en) | 2015-09-16 |
RU2573156C1 (en) | 2016-01-20 |
CN104114295B (en) | 2016-04-20 |
WO2013079503A1 (en) | 2013-06-06 |
CN104114295A (en) | 2014-10-22 |
US20150114066A1 (en) | 2015-04-30 |
JP5806415B2 (en) | 2015-11-10 |
US9162266B2 (en) | 2015-10-20 |
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