CN102319765A - Wrapper roll for recoiling machine in CPS (Compact Trip Roduction) production line and lubricating method thereof - Google Patents
Wrapper roll for recoiling machine in CPS (Compact Trip Roduction) production line and lubricating method thereof Download PDFInfo
- Publication number
- CN102319765A CN102319765A CN201110176637A CN201110176637A CN102319765A CN 102319765 A CN102319765 A CN 102319765A CN 201110176637 A CN201110176637 A CN 201110176637A CN 201110176637 A CN201110176637 A CN 201110176637A CN 102319765 A CN102319765 A CN 102319765A
- Authority
- CN
- China
- Prior art keywords
- roll
- bearing
- roller
- winding
- production line
- 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
Images
Abstract
The invention discloses a wrapper roll for a recoiling machine in a CPS (Compact Trip Roduction) production line. The recoiling machine comprises stand rolls, a lower pinch roll and an upper pinch roll. A plurality of wrapper rolls and a recoiling machine mandrel form a sheet recoiling mechanism; the wrapper rolls are arranged on a machine base through bearings and bearing bushings; sealing rings and bearing inner end covers are respectively arranged at two ends of each bearing; the sealing rings are fixedly connected with the wrapper rolls; the bearing inner end covers are fixedly connected with the bearing bushings; and each sealing ring and each bearing inner end cover form a sealing structure through water retaining rings in a concave-convex matched manner. The invention also discloses a lubricating method for the wrapper roll. By adopting the technical scheme, the automatic oil supplementing and lubricating effect of the wrapper roll is greatly improved; the wrapper roll can operate soundly; the overflow phenomenon can be avoided; the on-line life is greatly prolonged; cooling water of the upper pinch roll is reformed so as to reduce a water inlet source of the wrapper roll and a water inlet amount of a bearing block of the wrapper roll and delay the emulsification of an oil product in the bearing block; and the economic loss caused by steel piling of the recoiling machine and even unplanned pouring stop accidents is reduced.
Description
Technical field
The invention belongs to the technical field that metallurgical industry is produced, relate to the technology of CSP, more particularly, the present invention relates to a kind of CSP production line coil wrapper roll.In addition, the invention still further relates to the lubricating method that this helps winding up roller to adopt.
Background technology
CSP is a kind of technology that medium thin slab continuous casting and rolling is worked as in metallurgical industry, is the close-coupled torrid zone production technology (CSP, i.e. Compact trip roduction) of western mark (SMS) company.CSP technology have flow process short, produce easyly and stable, good product quality, cost are low, and very strong the market competitiveness is arranged.China Handan iron company, Zhujiang River iron and steel have the continuous casting and rolling production line of CSP.
U.S. Di Namike CSP factory development product direction: railway wagon with steel, public service facility with steel, residential housing with steel, household electrical appliance with steel, automobile steel, construction(al)steel, change device with steel, electrical equipment with steel, storage battery steel with steel, heating and ventilation and air-conditioning equipment with steel, office with steel and general primary steel.
At present, horse steel CSP production line has two coiling machines, is undertaking the whole production line coil of strip and is batching task, and it is very nervous that it batches rhythm.When a coiling machine breaks down, can only batch production by separate unit, production risk is very big like this.In case another coiling machine also breaks down, production line will be compelled to stop watering.Every coiling machine has three to help winding up roller (R1, R2, R3).Three are helped winding up roller respectively by an actuator drives.Help the winding up roller transmission device to be monitored by the speed encoder of thin Oil Lubricating System pressure switch and motor, monitoring helps the actual speed of winding up roller.Help winding up roller maximal rate: 26m/s.
The band steel gets into and helps before the winding up roller, and the speed that helps winding up roller is that mandrel driving input value adds guide's amount.Mandrel is set up after the strip tension, helps the winding up roller withdrawal, and rotates with creep speed.Band steel afterbody gets into and batches the moment that pusher side is led the position, helps winding up roller quilt speedup again, and is pressed on the coil of strip.Because the continuous increase of coil of strip diameter, the velocity amplitude of its driving also must corresponding increases.
The problem that prior art exists is:
Help winding up roller in running, stuck phenomenon usually occurs, particularly batch R2 for No. 2 and help that winding up roller is normal, and stuck fault takes place, move 3～4 months even 1 month and overcurrent just occurs and report red information or stuck phenomenon occurs.Compelled like this replacing helped winding up roller, in order to avoid stuck phenomenon occurs.When coiling machine normally batched coil of strip, it was stuck to help winding up roller to occur suddenly, and shutdown steel phenomenon will appear jumping in coiling machine, even causes the unplanned accident of watering of stopping of production line.The once non-volume of heap steel is worth: 100,000 yuan, the unplanned cost allowance that stops watering a time: 180,000 yuan, the annual generation helps winding up roller stuck 4 times, its economic loss: 1,120,000 yuan.
Help the stuck reason of winding up roller mainly to be: the bearing block water inlet; Drier oil emulsification; The bearing dry friction; The husky frame of bearing damages.
Following for the bearing block water inlet analysis of causes:
1, sealing effectiveness is poor in the bearing;
2, help the winding up roller bearing block to give oil mass less than normal;
3, top pinch roll cooling water pipe cooling water gets into along guide plate and batches, and directly gets into and helps the winding up roller bearing block.
Summary of the invention
First problem that the present invention solves provides a kind of CSP production line coil wrapper roll, its objective is to prevent that coil wrapper roll is stuck, batch zone heap steel and the unplanned generation that stops the accident of watering.
To achieve these goals, the technical scheme taked of the present invention is:
CSP production line coil wrapper roll provided by the present invention; Described coiling machine comprises breast roll, bottom pinch roll, top pinch roll; A plurality of described winding up roller and coiling machine mandrels of helping constitute the thin plate spooler; Describedly help winding up roller to pass through bearing and bearing outside is installed on support, be equipped with sealing ring and bearing internal end cover at the two ends of described bearing; Described sealing ring and the described winding up roller that helps are fastenedly connected, and described bearing internal end cover and described bearing outside are fastenedly connected; Described sealing ring and bearing internal end cover form hermetically-sealed construction through the concavo-convex drip ring that cooperatively interacts.
Described bearing outside is provided with two or more drier oil distributors, and described drier oil distributor is the grease filling hole structure.
The injection phase of the cooling water of described CSP production line coiling machine is located at a side of the supplied materials direction of being partial to the thin plate material on the described top pinch roll.
The raised or sunken height of the described concavo-convex drip ring that cooperatively interacts is 5mm.
Second problem that the present invention solves provides the lubricating method that above-described CSP production line coil wrapper roll adopts, and its goal of the invention is identical with technique scheme.The technical scheme of this lubricating method is:
The amount that each is described injects lubricant grease when helping the each repairing of winding up roller is no less than 12ml; Be not more than 15min the blanking time of per twice repairing.
The present invention adopts technique scheme, helps the winding up roller operational excellence, over-current phenomenon avoidance can not occur reporting, gets the drier oil situation analysis in the bearing block from on-site manual, and the emulsification situation does not take place drier oil; Help the online life-span of winding up roller to rise to 1.5 years by 3 months.The lubricated repairing effect that helps winding up roller is original 6 times, improves the automatic repairing lubricant effect that helps winding up roller greatly; The transformation of top pinch roll cooling water reduces the water inlet source that helps winding up roller, reduces the inflow that helps the winding up roller bearing block, delays the oil emulsion in the bearing block, prolongs the online life-span of helping winding up roller.Reduce coiling machine heap steel even produce unplanned economic loss of stopping the accident of watering.
Description of drawings
The mark of facing down among expressed content of each width of cloth accompanying drawing of this specification and the figure briefly explains:
Fig. 1 is a general structure sketch map of the present invention;
Fig. 2 is for helping winding up roller supporting structure sketch map among the present invention;
Fig. 3 is the bearing internal end cover structural representation among the present invention;
Fig. 4 looks sketch map for the right side of structure shown in Figure 3;
Fig. 5 is the structural representation of the sealing ring among the present invention.
Be labeled as among the figure:
1, breast roll, 2, bottom pinch roll, 3, top pinch roll, 4, change-over switch, 5, chute; 6, guiding stand, 7, the coiling machine frame, 8, cambered plate, 9, the coiling machine mandrel; 10, help winding up roller, 11, bearing, 12, the bearing internal end cover, 13, sealing ring; 14, bearing outside, 15, drip ring, 16, the drier oil distributor, 17, the shaft end seal ring.
The specific embodiment
Contrast accompanying drawing below; Through description to embodiment; Effect and operation principle, the manufacturing process of mutual alignment between the shape of specific embodiments of the invention such as related each member, structure, the each several part and annexation, each several part and manipulate method etc.; Do further detailed explanation, inventive concept of the present invention, technical scheme are had more complete, accurate and deep understanding to help those skilled in the art.
The of the present invention structure expressed like Fig. 1 to Fig. 5; The present invention is a kind of CSP production line coil wrapper roll; Described coiling machine comprises breast roll 1, bottom pinch roll 2, top pinch roll 3; A plurality of described winding up roller 10 and coiling machine mandrels 9 of helping constitute the thin plate spooler, and the described winding up roller 10 that helps is installed on support through bearing 11 and bearing outside 14.
Described coiling machine is established coiling machine frame 7, and it comprises guiding stand 6 and cambered plate 8, for thin plate provides guide effect, it is got into smoothly batch; Above described coiling machine frame 7, establish change-over switch 4 and chute 5,, heap steel accident sends alarm signal when taking place, and coiling machine is shut down rapidly, avoid bigger accident.
To helping the stuck reason of winding up roller 10; The present invention is to helping winding up roller 10; Particularly help winding up roller 10 to transform in a large number to R2, from bearing block structure, bearing lubrication aspect (be repairing amount increase), reduce cooling water and get into four aspects such as spooler, maintaining and improve.
One, help the mechanical seal of winding up roller bearing block to transform:
In order to solve the problem that exists at the described present known technology of this specification background technology part and to overcome its defective; Realization prevents that coil wrapper roll is stuck, batches zone heap steel and unplanned goal of the invention of stopping watering the accident generation, and the technical scheme that the present invention takes is:
As depicted in figs. 1 and 2, CSP production line coil wrapper roll provided by the present invention is equipped with sealing ring 13 and bearing internal end cover 12 at the two ends of described bearing 11; Described sealing ring 13 is fastenedly connected with the described winding up roller 10 that helps, and described bearing internal end cover 12 is fastenedly connected with described bearing outside 14; Described sealing ring 13 forms hermetically-sealed construction with bearing internal end cover 12 through the concavo-convex drip ring that cooperatively interacts 15.
The raised or sunken height of the described concavo-convex drip ring that cooperatively interacts 15 is 5mm.
Wherein, in the end that helps winding up roller, described sealing ring 13 is expressed as shaft end seal ring 17 in the drawings, and the sealing ring 13 of expressing among the hermetically-sealed construction of described shaft end seal ring 17 and the figure is identical, just on the structure of installing, some differences is arranged.
On mechanical sealing ring 13, increase drip ring 15, reduce cooling water and get in the bearing block through mechanical sealing ring 13 and sealing.The present invention has adopted above structure on mechanical sealing ring 13 that helps winding up roller or shaft end seal ring 17, reduce cooling water and get into bearing block, prevents that cooling water is through sealing the emulsification that causes drier oil in the direct entering bearing.
Drier oil emulsification is that lubricant grease is met a kind of states of matter variation that water takes place, and its lubricating functions descends, and must overcome in the actual production.
Two, help the winding up roller dry oil lubrication to transform and maintenance:
Described bearing outside 14 is provided with two or more drier oil distributors 16, and described drier oil distributor 16 is the grease filling hole structure.Described drier oil is a lubricant grease.
In the prior art, owing to batch when helping the design of the lubricated foreign sides of winding up roller 10, be in batching lubricating system, each repairing has 45 minutes blanking time, and the drier oil that at every turn covers bearing block has only 6ml, and is on the low side for actual requirement.
For increase helps the increment of winding up roller lubricating system, the present invention takes following measure in the operation area:
As shown in Figure 2, increase each increment, be increased to 12ml by original 6ml, increase drier oil distributor 16 through the scene and realize, replace an original point with 2 distributing points now.
Through above transformation, the lubricated repairing effect that helps winding up roller 10 is 6 times original (shorten blanking time simultaneously), improves the automatic repairing lubricant effect that helps winding up roller 10 greatly.
The present invention arranges the spot check personnel to help winding up roller to carry out manual repairing to R2 in order to reduce fault every day, and its effect is:
1, replenishes the interior drier oil fat of bearing block, increase lubricant effect;
2, check drier oil emulsification situation in the bearing block every day, in time find the operation phenomenon in the bearing block, plan is changed and is helped winding up roller 10.
Three, reducing cooling water gets in the coiling machine:
The injection phase of the cooling water of described CSP production line coiling machine is located at a side of being partial to the supplied materials direction of thin plate material on the described top pinch roll 3.
The cooling water that gets into coiling machine mainly be after top pinch roll 3 water quench in guide plate gets into coiling machine.When coiling machine normally batches coil of strip, cooling water along guide plate get into batch in the coil of strip upper surface, cooling water along coil of strip directly splash in R2 help on the winding up roller surface or the entering bearing block in.
Help the winding up roller bearing block in order to reduce the entering of top pinch roll 3 cooling waters; Must change the water quench position of top pinch roll 3, make water quench top pinch roll 3 after, do not get in the coiling machine; Directly arrive the front portion of top pinch roll 3, like this cooling water of pinch roll is just cut off by top pinch roll 3.The transformation of top pinch roll 3 cooling waters reduces the water inlet source that helps winding up roller 10, reduces the inflow that helps the winding up roller bearing block, can delay the oil emulsion in the bearing block, prolongs the online life-span of helping winding up roller 10.
Four, the maintenance method of CSP production line coil wrapper roll (being lubricating method):
The another one problem that the present invention solves provides the lubricating method that above-described CSP production line coil wrapper roll adopts, and its goal of the invention is identical with technique scheme.The technical scheme of this lubricating method is:
The amount that each is described injects lubricant grease when helping the each repairing of winding up roller 10 is no less than 12ml; Be not more than 15min the blanking time of per twice repairing.
Shorten repairing blanking time: on-the-spot coiling machine mandrel 9 environment of living in are more abominable, and repairing is shorter at interval, has only 15 minutes.For this reason, we help R2 the oil-supplementing system of winding up roller to transform the mandrel lubricating system, shorten the repairing blanking time that R2 helps winding up roller 10, have only 15 minutes.
Five, help winding up roller operational effect and benefit:
Beneficial effect: help the winding up roller operational excellence after the transformation, the newspaper over-current phenomenon avoidance do not occur.See that from the drier oil situation that on-site manual is got in the bearing block emulsification situation does not take place drier oil.Help the online life-span of winding up roller 10 to rise to 1.5 years by 3 months.
Economic benefit: help winding up roller stuck, will cause coiling machine heap steel, even produce the unplanned accident of watering of stopping.Its annual benefit: the once non-volume of heap steel is worth: 100,000 yuan, the unplanned cost allowance that stops watering a time: 180,000 yuan, the annual generation helps winding up roller stuck 4 times, its economic loss: 1,120,000 yuan.After embodiment of the present invention, above-mentioned loss significantly reduces.
Combine accompanying drawing that the present invention has been carried out exemplary description above; Obviously the concrete realization of the present invention does not receive the restriction of aforesaid way; As long as adopted the improvement of the various unsubstantialities that method of the present invention design and technical scheme carry out; Or design of the present invention and technical scheme are directly applied to other occasion without improving, all within protection scope of the present invention.
Claims (5)
1. CSP production line coil wrapper roll; Described coiling machine comprises breast roll (1), bottom pinch roll (2), top pinch roll (3); A plurality of described winding up roller (10) and coiling machine mandrels (9) of helping constitute the thin plate spooler; The described winding up roller (10) that helps is installed on support through bearing (11) and bearing outside (14), it is characterized in that: be equipped with sealing ring (13) and bearing internal end cover (12) at the two ends of described bearing (11); Described sealing ring (13) is fastenedly connected with the described winding up roller (10) that helps, and described bearing internal end cover (12) is fastenedly connected with described bearing outside (14); Described sealing ring (13) forms hermetically-sealed construction with bearing internal end cover (12) through the concavo-convex drip ring that cooperatively interacts (15).
2. according to the described CSP production line of claim 1 coil wrapper roll, it is characterized in that: described bearing outside (14) is provided with two or more drier oil distributors (16), and described drier oil distributor (16) is the grease filling hole structure.
3. according to the described CSP production line of claim 1 coil wrapper roll, it is characterized in that: the injection phase of the cooling water of described CSP production line coiling machine is located at a side of being partial to the supplied materials direction of thin plate material on the described top pinch roll (3).
4. according to the described CSP production line of claim 1 coil wrapper roll, it is characterized in that: the raised or sunken height of the described concavo-convex drip ring that cooperatively interacts (15) is 5mm.
5. according to the described CSP production line of claim 1 coil wrapper roll, it is characterized in that: the amount that each is described injects lubricant grease when helping the each repairing of winding up roller (10) is no less than 12ml; Be not more than 15min the blanking time of per twice repairing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110176637A CN102319765A (en) | 2011-06-28 | 2011-06-28 | Wrapper roll for recoiling machine in CPS (Compact Trip Roduction) production line and lubricating method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110176637A CN102319765A (en) | 2011-06-28 | 2011-06-28 | Wrapper roll for recoiling machine in CPS (Compact Trip Roduction) production line and lubricating method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102319765A true CN102319765A (en) | 2012-01-18 |
Family
ID=45447670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110176637A Pending CN102319765A (en) | 2011-06-28 | 2011-06-28 | Wrapper roll for recoiling machine in CPS (Compact Trip Roduction) production line and lubricating method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102319765A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107530762A (en) * | 2015-04-17 | 2018-01-02 | 哈特伯金属成型机股份公司 | The ring-rolling device of rolling bearing with axial restraint |
| CN112756427A (en) * | 2020-12-28 | 2021-05-07 | 包头钢铁（集团）有限责任公司 | Control method for preventing strip stacking between outlet roller shear and pinch roll of galvanizing unit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5945018A (en) * | 1982-09-08 | 1984-03-13 | Sumitomo Metal Ind Ltd | Manufacture of hot-rolled steel sheet having small amount of scale |
| US20030033844A1 (en) * | 2001-08-15 | 2003-02-20 | O'fathaigh Barra | Roll gap control for coiler |
| CN2581747Y (en) * | 2002-10-31 | 2003-10-22 | 宝山钢铁股份有限公司 | Improved structure of full-sealing for roll and bearing |
| CN1535370A (en) * | 2001-06-30 | 2004-10-06 | SMS�����ɷݹ�˾ | Thin-strip coiler comprisng flatness measuring roll |
| CN201162057Y (en) * | 2008-01-07 | 2008-12-10 | 宝山钢铁股份有限公司 | Press roll for galvanization machine group |
| CN202185484U (en) * | 2011-06-28 | 2012-04-11 | 马鞍山钢铁股份有限公司 | Reeling machine with wrapper rolls on CSP production line |
-
2011
- 2011-06-28 CN CN201110176637A patent/CN102319765A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5945018A (en) * | 1982-09-08 | 1984-03-13 | Sumitomo Metal Ind Ltd | Manufacture of hot-rolled steel sheet having small amount of scale |
| CN1535370A (en) * | 2001-06-30 | 2004-10-06 | SMS�����ɷݹ�˾ | Thin-strip coiler comprisng flatness measuring roll |
| US20030033844A1 (en) * | 2001-08-15 | 2003-02-20 | O'fathaigh Barra | Roll gap control for coiler |
| CN2581747Y (en) * | 2002-10-31 | 2003-10-22 | 宝山钢铁股份有限公司 | Improved structure of full-sealing for roll and bearing |
| CN201162057Y (en) * | 2008-01-07 | 2008-12-10 | 宝山钢铁股份有限公司 | Press roll for galvanization machine group |
| CN202185484U (en) * | 2011-06-28 | 2012-04-11 | 马鞍山钢铁股份有限公司 | Reeling machine with wrapper rolls on CSP production line |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107530762A (en) * | 2015-04-17 | 2018-01-02 | 哈特伯金属成型机股份公司 | The ring-rolling device of rolling bearing with axial restraint |
| CN107530762B (en) * | 2015-04-17 | 2020-01-14 | 哈特伯金属成型机股份公司 | Ring rolling device with axially fixed rolling bearing |
| TWI683706B (en) * | 2015-04-17 | 2020-02-01 | 瑞士商哈特布爾變換機股份公司 | Ring rolling device with axially fixed rolling bearings |
| US10870144B2 (en) | 2015-04-17 | 2020-12-22 | Hatebur Umformmaschinen Ag | Ring rolling device with axially fixed rolling bearings |
| CN112756427A (en) * | 2020-12-28 | 2021-05-07 | 包头钢铁（集团）有限责任公司 | Control method for preventing strip stacking between outlet roller shear and pinch roll of galvanizing unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102514968A (en) | Coiled material conveying and tensioning device | |
| CN202185484U (en) | Reeling machine with wrapper rolls on CSP production line | |
| CN102319765A (en) | Wrapper roll for recoiling machine in CPS (Compact Trip Roduction) production line and lubricating method thereof | |
| EP2346630A1 (en) | System for tracking system properties | |
| CN202006274U (en) | Vertical centrifugal casting machine | |
| CN105397048A (en) | Mechanical casting blank detecting device used for continuous casting roller way | |
| DE102010022003A1 (en) | Compact-strip-production plant for the production of metal casting strip as pre-product for slabs, comprises mold for casting the casting strip, and a vertical strand guide for guiding and cooling the poured casting strip up to hardening | |
| CN104214278B (en) | The lubricated type primary speed-down structure of a kind of vertical type speed reducer (change gear) and a kind of vertical type speed reducer (change gear) | |
| CN102784802A (en) | Device and method for monitoring state of cross cardan shaft of CVC rolling mill | |
| CN204746393U (en) | Novel automatic oiling of jaw breaker and lubricating oil reutilization device | |
| CN101797587B (en) | Control method of hydraulic pressure balance device of twenty-roller steel plate cold rolling mill transmission roller | |
| CN204842456U (en) | Cold tandem mill | |
| CN203221063U (en) | Lubrication structure of baffle vertical roller of tandem rolling set | |
| CN206831125U (en) | A kind of biomass granulation machine self-service petrol pump list oil circuit controlling organization | |
| CN206054692U (en) | A kind of strip steel trident area pinch roll reduction gear oil tank waterproof seal | |
| CN106570072A (en) | Tension leveler driving roller running state monitoring system and fault diagnosis method | |
| CN101493288B (en) | Floating apparatus and annular air duct end sealing device | |
| CN206544298U (en) | A kind of lubrication oiling apparatus of injection machine | |
| CN202391977U (en) | Shaft end unclosed cover | |
| CN102042471A (en) | Thin oil lubrication system of main transmission reduction box of continuous pipe rolling mill | |
| CN204603246U (en) | A kind of continuous casting tundish transverse-moving mechanism | |
| CN201103583Y (en) | Projection oil cylinder | |
| CN201589004U (en) | Positioning and detecting device for opening of valve | |
| CN202943087U (en) | Looper assembly used for steel rolling | |
| CN202460755U (en) | Protector of large tile oil supply terminal of ball mill |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120118 |