EP2026916B1 - Walzgerüst zur herstellung von walzband oder blech - Google Patents
Walzgerüst zur herstellung von walzband oder blech Download PDFInfo
- Publication number
- EP2026916B1 EP2026916B1 EP07725995A EP07725995A EP2026916B1 EP 2026916 B1 EP2026916 B1 EP 2026916B1 EP 07725995 A EP07725995 A EP 07725995A EP 07725995 A EP07725995 A EP 07725995A EP 2026916 B1 EP2026916 B1 EP 2026916B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rolls
- contour
- barrel
- function
- supporting
- 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.)
- Active
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 4
- 230000007704 transition Effects 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims abstract description 3
- 230000000295 complement effect Effects 0.000 claims description 25
- 238000009826 distribution Methods 0.000 abstract description 16
- 238000012886 linear function Methods 0.000 abstract 2
- 238000006073 displacement reaction Methods 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010327 methods by industry Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000010959 steel 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
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
- B21B13/142—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls by axially shifting the rolls, e.g. rolls with tapered ends or with a curved contour for continuously-variable crown CVC
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
- B21B2013/025—Quarto, four-high stands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
- B21B2013/028—Sixto, six-high stands
-
- 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
- B21B27/02—Shape or construction of rolls
- B21B27/021—Rolls for sheets or strips
- B21B2027/022—Rolls having tapered ends
-
- 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
- B21B27/02—Shape or construction of rolls
- B21B27/021—Rolls for sheets or strips
Definitions
- the invention relates to a rolling stand for the production of rolled strip or sheet metal with work rolls, which are supported on backup rolls or intermediate rolls and backup rolls, wherein the work rolls and / or intermediate rolls are arranged axially displaceable against each other in the rolling stand and each working and / or intermediate roll over the entire having effective bale length, curved, describable by a trigonometric function bale contour and complement these two bale contours complementary only in a certain relative axial position of the rollers of the roller pair in the unloaded state.
- a rolling stand of the generic type is already out of EP-A 0258482 known.
- the roll bale contour of the in the professional world under the name SmartCrown® from eg the AT 410765B known rollers can be mathematically described by a modified sine function. By a suitable choice of the contour parameters, this results in a cosinusoidal idling gap, which can be influenced in its amplitude by axial displacement of the rollers.
- Object of the present invention is therefore to avoid the disadvantages of the prior art described above and to propose a rolling mill, to minimize the inhomogeneities in the load distribution along the contact line of the support rollers and their adjacent rollers and in particular reduce local load peaks in the load distribution curve and thus the duration of use To increase the rollers and the necessary regrinding intervals.
- this partial or complete complement of the bale contours refers to the two back-up rolls and the respective adjacent work rolls.
- this partial or complete complement of the bale contours refers to the two back-up rolls and the respective adjacent intermediate rolls.
- the shortest possible displacement stroke of the work rolls is advantageous, since both the displacement time and the plant technology to be provided for sliding guides can be kept short.
- a short displacement stroke leads to larger diameter differences over the bale length occurring with a given profile adjustment range of the work rolls than with a longer displacement stroke.
- rollers in the rolling stand are aligned according to a possible embodiment of the invention so that a complete complement of the bale contours of the back-up rolls and the immediately adjacent work rolls or intermediate rolls in the unshifted state of the immediately adjacent work rolls or intermediate rolls occurs.
- R B (x) support roller radius at the point x of the axial support roller extension, R 0 radius offset, r B (x) contour at the point x of the axial support roll extension and k correction factor
- the complete complement of the roll bale contours results.
- a complete completion of the roll bale contours is no longer possible.
- the contour factor may be greater or less than 1.
- bale ends of the rolls are usually chamfered and thus have an exemption in these edge regions.
- Exemptions of this kind are from the EP 0 258 482 A1 or the EP 1 228 818 A2 already known. These exemptions are formed in contoured roll bales in marginal areas with increasing towards the edge bale radius by a cylindrical bale end, as in the EP 0 258 482 A1 is shown or may be formed in rolls with cylindrical roll bale contour by a cone-shaped edge region, as for example in the EP 1 228 818 A2 is shown and described.
- FIGS. 1 to 4 The load distribution between back-up rolls and work rolls in a prior art roll bale contour is contrasted with the load distribution between back-up rolls and work rolls in a roll bale contour according to the invention using the example of a four-high stand.
- FIG. 1 shows a schematic representation of the roller assembly in a four-high stand for rolling a metal strip B, in particular a steel strip with work rolls 1 and support rollers 2.
- the axially displaceable work rolls 1 each have a writable by a modified sine function bale contour 3. These bale contours 3 complement each other in a certain relative axial position of the rolls of the pair of work rolls complementary.
- the work rolls 1 are supported by support rollers 2, which have a cylindrical bale contour 4 and are supported on the work rolls acting rolling forces.
- the load distribution between the upper work roll 1 and the upper support roll 2 is in this case the roll bale design in FIG.
- FIG. 3 shows a schematic representation of the roll arrangement in a four-high stand with work rolls 1 and support rolls 2.
- the axially displaceable work rolls 1 each have a bale contour 3 which can be described by a modified sine function, these bale contours being complementary in a specific relative axial position of the work rolls complete.
- the two support rollers 2 also have a complementary complementary bale contour 4, which is also formed by a modified sine function, the bale contours of the adjacent, cooperating work roll 1 and support roller 2 completely complement each other in an unloaded state.
- the load distribution between the upper work roll 1 and the upper support roll 2 is in this case the roll bale design in FIG. 4 shown. Load peaks in the edge area appear differently depending on the axial displacement. Altogether it shows over the rolling ball course at the However, the invention already a basic equalization of the load distribution.
- FIG. 5 shows in a schematic arrangement, the roller assembly in a SextoGerüst with work rolls 1, intermediate rolls 5 and back-up rolls 2, wherein the work rolls are supported on the intermediate rolls on the support rollers.
- the work rolls 1 are equipped with a cylindrical bale contour 3.
- the bale contour of the work rolls can also be oriented to the bale contour of the adjacent intermediate rolls.
- the intermediate rollers 5 have a bale contour 6 that can be described by a modified sine function.
- the support rollers 2 have a bale contour 4 that can be described by a sine function.
- the bale contours 4 of the support rollers 2 and the bale contour of the intermediate rollers 5 complement each other completely in the unshifted axial position of the axially adjustable intermediate rollers 5 in the unloaded state.
- FIG. 6 shows work rolls 1 and back-up rolls 2 in a four-high stand in a schematic representation
- the basic structure of the bale contours 3, 4 follows the embodiment of Figure 3.
- a sexto scaffold analogous to FIG. 5 possible to change the contour of the support rollers and the intermediate rollers by a correction factor k, whereby in the unloaded state only a partial complement of the bale contours of the support roller and the immediately adjacent intermediate roller occurs.
- FIG. 7 the course of the roll bale contour 7 of a back-up roll or intermediate roll or work roll over the bale length is shown.
- dash-dotted lines 8, 9 known from the prior art possibilities of chamfering a roller in the end regions are shown to avoid high edge pressures.
- the chamfering according to the dotted line 8 produces a cylindrical end portion and the chamfering corresponding to the dotted line 9 a cone-shaped end portion of the rollers, in both cases a kink 10 in the contour over the bale length occurs, which forms a circumferential edge on the roller.
- An improvement in the Loading conditions result from a chamfer gradually approaching chamfer, resulting in both sides of a corrected bale contour, which is illustrated by the dotted lines 11 and 12.
- both curves have the same slope as the tangent t.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Metal Rolling (AREA)
- Rolling Contact Bearings (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Milling Processes (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Control Of Metal Rolling (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI200731046T SI2026916T1 (sl) | 2006-06-14 | 2007-06-13 | Valjalno ogrodje za izdelavo valjanega traka ali pločevine |
PL07725995T PL2026916T3 (pl) | 2006-06-14 | 2007-06-13 | Klatka walcownicza do wytwarzania taśmy walcowanej lub blachy |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT10212006 | 2006-06-14 | ||
PCT/EP2007/005218 WO2007144162A1 (de) | 2006-06-14 | 2007-06-13 | Walzgerüst zur herstellung von walzband oder blech |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2026916A1 EP2026916A1 (de) | 2009-02-25 |
EP2026916B1 true EP2026916B1 (de) | 2012-08-01 |
Family
ID=38430512
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07725995A Active EP2026916B1 (de) | 2006-06-14 | 2007-06-13 | Walzgerüst zur herstellung von walzband oder blech |
EP07725994.3A Active EP2026915B2 (de) | 2006-06-14 | 2007-06-13 | Walzgerüst zur herstellung von walzband oder blech |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07725994.3A Active EP2026915B2 (de) | 2006-06-14 | 2007-06-13 | Walzgerüst zur herstellung von walzband oder blech |
Country Status (12)
Country | Link |
---|---|
US (2) | US8881569B2 (pl) |
EP (2) | EP2026916B1 (pl) |
CN (2) | CN101511498B (pl) |
AT (1) | ATE488309T1 (pl) |
BR (2) | BRPI0713145A2 (pl) |
DE (1) | DE502007005682D1 (pl) |
ES (2) | ES2392357T3 (pl) |
PL (2) | PL2026916T3 (pl) |
RU (2) | RU2442669C2 (pl) |
SI (2) | SI2026916T1 (pl) |
UA (2) | UA93090C2 (pl) |
WO (2) | WO2007144162A1 (pl) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2392357T3 (es) | 2006-06-14 | 2012-12-10 | Siemens Vai Metals Technologies Gmbh | Caja de laminación para la fabricación de bandas laminadas o chapas |
DE102009021414A1 (de) * | 2008-12-17 | 2010-07-01 | Sms Siemag Aktiengesellschaft | Walzgerüst zum Walzen eines insbesondere metallischen Guts |
DE102010014867A1 (de) * | 2009-04-17 | 2010-11-18 | Sms Siemag Ag | Verfahren zum Bereitstellen mindestens einer Arbeitswalze zum Walzen eines Walzguts |
AT509107B1 (de) | 2009-12-10 | 2011-09-15 | Siemens Vai Metals Tech Gmbh | Walzgerüst zur herstellung von walzband |
US9021706B2 (en) * | 2010-02-01 | 2015-05-05 | The Timken Company | Unified rolling and bending process for roller bearing cages |
DE102010029598A1 (de) * | 2010-06-01 | 2011-12-01 | ACHENBACH BUSCHHüTTEN GMBH | Stützwalze und damit ausgerüstetes Walzgerüst |
CN102397874A (zh) * | 2010-09-16 | 2012-04-04 | 鞍钢股份有限公司 | 一种延长高速钢轧辊使用寿命的方法 |
DE102012212532B4 (de) | 2012-07-18 | 2016-12-15 | Achenbach Buschhütten GmbH & Co. KG | Walzgerüst mit konturierten Walzen |
US10226188B2 (en) | 2013-08-23 | 2019-03-12 | Covidien Lp | Systems and methods for monitoring blood pressure |
EP3108978B1 (en) * | 2015-06-26 | 2019-02-20 | DANIELI & C. OFFICINE MECCANICHE S.p.A. | Rolling stand and rolling method |
EP3124130A1 (de) * | 2015-07-28 | 2017-02-01 | Primetals Technologies Austria GmbH | Walzenschliff zur gezielten vermeidung von viertelwellen |
DE102016222987A1 (de) | 2016-11-22 | 2018-05-24 | Sms Group Gmbh | Verfahren zum Schleifen der Kontur des Ballens einer Walze |
CN113319128B (zh) * | 2021-06-15 | 2021-12-14 | 北京科技大学 | 一种变接触工作辊及其辊形设计方法 |
Family Cites Families (28)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS517635B2 (pl) * | 1971-12-10 | 1976-03-09 | ||
JPS55103201A (en) | 1979-01-31 | 1980-08-07 | Nippon Kokan Kk <Nkk> | Rolling method for steel sheet |
JPS5630014A (en) | 1979-08-17 | 1981-03-26 | Kobe Steel Ltd | Rolling mill |
DE3038865C1 (de) | 1980-10-15 | 1982-12-23 | SMS Schloemann-Siemag AG, 4000 Düsseldorf | Walzgeruest mit axial verschiebbaren Walzen |
DE3213496A1 (de) | 1982-04-10 | 1983-10-20 | SMS Schloemann-Siemag AG, 4000 Düsseldorf | Walzgeruest mit axial verschiebbaren walzen |
US4519233A (en) * | 1980-10-15 | 1985-05-28 | Sms Schloemann-Siemag Ag | Roll stand with noncylindrical rolls |
JPS5956905A (ja) | 1982-09-28 | 1984-04-02 | Kawasaki Steel Corp | 調質圧延用6段圧延機 |
DE3602698A1 (de) * | 1985-04-16 | 1986-10-16 | SMS Schloemann-Siemag AG, 4000 Düsseldorf | Walzgeruest mit axial verschiebbaren walzen |
DE3620197A1 (de) | 1986-06-16 | 1987-12-17 | Schloemann Siemag Ag | Walzwerk zur herstellung eines walzgutes, insbesondere eines walzbandes |
DE3624241C2 (de) * | 1986-07-18 | 1996-07-11 | Schloemann Siemag Ag | Verfahren zum Betrieb eines Walzwerkes zur Herstellung eines Walzbandes |
DE3712043C2 (de) * | 1987-04-09 | 1995-04-13 | Schloemann Siemag Ag | Walzgerüst mit axial verschiebbaren Walzen |
DE69009102T3 (de) | 1989-06-05 | 2001-02-08 | Kawasaki Steel Corp., Kobe | Vielwalzengerüst. |
JPH0313218A (ja) | 1989-06-09 | 1991-01-22 | Kawasaki Steel Corp | 圧延機 |
US5622073A (en) * | 1991-05-16 | 1997-04-22 | Kawasaki Steel Corporation | Six high rolling mill |
CN1062495C (zh) * | 1995-11-10 | 2001-02-28 | 东北重型机械学院南校 | 一种轴向移动改变辊缝凸度并可变辊缝形状的轧辊辊型 |
RU2115493C1 (ru) | 1997-06-04 | 1998-07-20 | Акционерное общество Новолипецкий металлургический комбинат | Валковый узел листопрокатной клети кварто |
US6119500A (en) * | 1999-05-20 | 2000-09-19 | Danieli Corporation | Inverse symmetrical variable crown roll and associated method |
JP2001252705A (ja) | 2000-03-10 | 2001-09-18 | Kobe Steel Ltd | 圧延機および圧延方法 |
DE10037004B4 (de) * | 2000-07-29 | 2004-01-15 | Sms Demag Ag | Walzgerüst für bandkantenorientiertes Verschieben der Zwischenwalzen in einem 6-Walzen-Gerüst |
DE10039035A1 (de) | 2000-08-10 | 2002-02-21 | Sms Demag Ag | Walzgerüst mit einem CVC-Walzenpaar |
DE10102821A1 (de) | 2001-01-23 | 2002-07-25 | Sms Demag Ag | Walzwerk zur Herstellung planer Walzbänder mit gewünschter Bandprofilüberhöhung |
JP3747786B2 (ja) | 2001-02-05 | 2006-02-22 | 株式会社日立製作所 | 板材用圧延機の圧延方法及び板材用圧延設備 |
EP1249801A1 (de) | 2001-04-12 | 2002-10-16 | Siemens Aktiengesellschaft | Differenziertes Schwellwertverhalten von Prepaid-Diensten |
AT410765B (de) | 2001-09-12 | 2003-07-25 | Voest Alpine Ind Anlagen | Walzgerüst zur herstellung von walzband |
JP2005052864A (ja) | 2003-08-04 | 2005-03-03 | Ishikawajima Harima Heavy Ind Co Ltd | 帯板製造設備 |
DE10359402A1 (de) | 2003-12-18 | 2005-07-14 | Sms Demag Ag | Optimierte Verschiebestrategien als Funktion der Bandbreite |
WO2007014161A2 (en) | 2005-07-22 | 2007-02-01 | Sustainable Solutions, Inc. | Cotton fiber particulate and method of manufacture |
ES2392357T3 (es) | 2006-06-14 | 2012-12-10 | Siemens Vai Metals Technologies Gmbh | Caja de laminación para la fabricación de bandas laminadas o chapas |
-
2007
- 2007-06-13 ES ES07725995T patent/ES2392357T3/es active Active
- 2007-06-13 WO PCT/EP2007/005218 patent/WO2007144162A1/de active Application Filing
- 2007-06-13 RU RU2009100918/02A patent/RU2442669C2/ru active
- 2007-06-13 UA UAA200900146A patent/UA93090C2/uk unknown
- 2007-06-13 EP EP07725995A patent/EP2026916B1/de active Active
- 2007-06-13 WO PCT/EP2007/005217 patent/WO2007144161A1/de active Application Filing
- 2007-06-13 BR BRPI0713145-3A patent/BRPI0713145A2/pt not_active IP Right Cessation
- 2007-06-13 EP EP07725994.3A patent/EP2026915B2/de active Active
- 2007-06-13 UA UAA200815031A patent/UA92946C2/uk unknown
- 2007-06-13 DE DE502007005682T patent/DE502007005682D1/de active Active
- 2007-06-13 SI SI200731046T patent/SI2026916T1/sl unknown
- 2007-06-13 PL PL07725995T patent/PL2026916T3/pl unknown
- 2007-06-13 US US12/304,952 patent/US8881569B2/en not_active Expired - Fee Related
- 2007-06-13 US US12/304,937 patent/US8413476B2/en not_active Expired - Fee Related
- 2007-06-13 RU RU2009100920/02A patent/RU2428268C2/ru active
- 2007-06-13 SI SI200730509T patent/SI2026915T2/en unknown
- 2007-06-13 CN CN2007800218283A patent/CN101511498B/zh active Active
- 2007-06-13 ES ES07725994.3T patent/ES2355948T5/es active Active
- 2007-06-13 CN CN2007800221746A patent/CN101466483B/zh active Active
- 2007-06-13 PL PL07725994T patent/PL2026915T5/pl unknown
- 2007-06-13 BR BRPI0713147-0A patent/BRPI0713147A2/pt not_active IP Right Cessation
- 2007-06-13 AT AT07725994T patent/ATE488309T1/de active
Also Published As
Publication number | Publication date |
---|---|
ATE488309T1 (de) | 2010-12-15 |
EP2026915B2 (de) | 2017-09-27 |
PL2026916T3 (pl) | 2012-12-31 |
SI2026915T1 (sl) | 2011-03-31 |
RU2442669C2 (ru) | 2012-02-20 |
WO2007144161A1 (de) | 2007-12-21 |
CN101466483B (zh) | 2011-06-15 |
BRPI0713147A2 (pt) | 2012-03-20 |
US8881569B2 (en) | 2014-11-11 |
UA92946C2 (uk) | 2010-12-27 |
PL2026915T3 (pl) | 2011-04-29 |
EP2026915B1 (de) | 2010-11-17 |
EP2026916A1 (de) | 2009-02-25 |
BRPI0713145A2 (pt) | 2012-03-20 |
CN101466483A (zh) | 2009-06-24 |
RU2009100918A (ru) | 2010-07-20 |
ES2355948T5 (es) | 2018-02-14 |
ES2392357T3 (es) | 2012-12-10 |
US8413476B2 (en) | 2013-04-09 |
CN101511498A (zh) | 2009-08-19 |
US20090314047A1 (en) | 2009-12-24 |
ES2355948T3 (es) | 2011-04-01 |
SI2026916T1 (sl) | 2012-11-30 |
US20100031724A1 (en) | 2010-02-11 |
DE502007005682D1 (de) | 2010-12-30 |
CN101511498B (zh) | 2011-06-15 |
EP2026915A1 (de) | 2009-02-25 |
UA93090C2 (uk) | 2011-01-10 |
PL2026915T5 (pl) | 2018-08-31 |
RU2428268C2 (ru) | 2011-09-10 |
SI2026915T2 (en) | 2018-01-31 |
RU2009100920A (ru) | 2010-07-20 |
WO2007144162A1 (de) | 2007-12-21 |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17P | Request for examination filed |
Effective date: 20081119 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR |
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AX | Request for extension of the european patent |
Extension state: AL BA HR MK RS |
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17Q | First examination report despatched |
Effective date: 20100609 |
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