CN102873104A - Medium width thick plate controlled rolling technology - Google Patents
Medium width thick plate controlled rolling technology Download PDFInfo
- Publication number
- CN102873104A CN102873104A CN2011101951509A CN201110195150A CN102873104A CN 102873104 A CN102873104 A CN 102873104A CN 2011101951509 A CN2011101951509 A CN 2011101951509A CN 201110195150 A CN201110195150 A CN 201110195150A CN 102873104 A CN102873104 A CN 102873104A
- Authority
- CN
- China
- Prior art keywords
- rolling
- controlled rolling
- module
- controlled
- slab
- 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
Landscapes
- Metal Rolling (AREA)
- Control Of Metal Rolling (AREA)
Abstract
The invention discloses a medium width thick plate controlled rolling technology which determines a controlled rolling policy according to a production design obtained to generate a production regulation of controlled rolling. According to the technology, a data interface, another data interface, a controlled rolling manner selecting module, a cross controlled rolling module and a single controlled rolling module are comprised. The invention provides two production control manners for temperature controlled rolling of plates in various types and specifications, solves the production problem of same batch of controlled rolling in different varieties and specifications, so as to provide great convenience for production organization of production enterprises.
Description
Technical field
The invention belongs to metal processing strip product rolling technical field, relate to a kind of novel strip controlled rolling production method, especially on-line setup calculating control system; Simultaneously, the invention still further relates to a kind of middle Plate rolling load distribution method.
Background technology
Along with the user to improving constantly that plate property requires, the common sheet material mode of production has been difficult to satisfy user's requirement.At this moment, can be by this sheet material be carried out controlled rolling, the production of this sheet material is divided into two or more rolling processes: wherein, the initial rolling temperature of the first rolling process is higher, be rolled down to certain thickness after, stop rolling, waiting temperature is cooled to required temperature, begin the rolling of the second rolling process, then be rolled down to finished product, it is rolling that be called two rolling processes this moment; If the second rolling process begin rolling after, be rolled down to certain temperature, stop rollingly, continue to treat that temperature to the required beginning temperature of the 3rd rolling process, and then rolls out finished product, it is rolling that be called many rolling processes this moment.Rolling and the many rolling processes Rolling Production of two rolling processes, the middle wait that one period long period is arranged, this section stand-by period just is called time of staying temperature, and this kind Rolling Production mode is also referred to as the warm-rolling system for the treatment of or controlled rolling.
Controlled rolling generally is divided into the intersection controlled rolling of temperature-controlled rolling and the multi-sheets of monolithic sheet material.The temperature-controlled rolling of monolithic sheet material generally is that monolithic sheet material is divided into two or three rolling processes, in this plate operation of rolling, does not have other sheet material to produce at this milling train.Because the temperature control of monolithic sheet material is produced at least one times above temperature for the treatment of of intermediate demand, time of staying temperature is longer, and the utilization rate of production equipment is lower, is difficult to improve the rhythm of producing, and generally seldom adopts the controlled rolling of monolithic sheet material.
At present, most controlled rollings for the finishing mill multi-sheets generally are the tandem rollings of carrying out multi-sheets.Namely during first block of sheet material is treated temperature, carry out the rolling of second, third even more sheet materials, when first block of sheet material reaches when treating temperature, it is rolling that second or the 3rd block of sheet material stops, first block of sheet material the rolling of the second rolling process that will begin in a minute, and all the other sheet materials then enter treats temperature state, first block of sheet material finish rolling after, the second rolling process of second block of sheet material of beginning is rolling, by that analogy, until finish the production that all need temperature control sheet material.At present, when carrying out tandem rolling, the kind of multi-sheets, specification generally are identical.
Summary of the invention
Technical problem to be solved by this invention is: proposed a kind of new method, the problem that the time of staying temperature when having solved monolithic sheet material temperature-controlled rolling is long; Secondly, when multi-sheets intersects temperature-controlled rolling, can realize that the sheet material of different cultivars, different size is produced simultaneously, namely during Rolling Production, the sheet material kind of carrying out tandem rolling can be fully different with specification; Again, for the foundation of production process of plate the production time in each stage and the model of sheet material temperature when accurately forecast is produced; In addition, rolling for continuous multi-sheets, model is formulated the plate rolling strategy automatically, namely determines in individual plates controlled rolling mode or intersecting the controlled rolling mode with plurality of plates produces.
The individual plates controlled rolling mode of production:
In present production model, the production schedule is generally all formulated according to order, and a lot of sheet materials are to order goods separately, and quantity seldom, when no more than 3 of the sheet material quantity of continuous to-be controlled rolling (same batch of production), adopt the mode of individual plates controlled rolling to produce.
For first block of sheet material that requires controlled rolling, the supplied materials thickness of finish rolling can be controlled in the 6-8 times of scope of finished product sheet metal thickness, so in first production process of plate, because the production passage is more, production time is elongated, and finish rolling continuous rolling just can guarantee the performance requirement of sheet material; Simultaneously, the finish rolling supplied materials THICKNESS CONTROL of second block of sheet material of finish rolling is in 4-6 times of scope of second sheet material finished product thickness, and the finish rolling supplied materials THICKNESS CONTROL of the 3rd block of sheet material is in 3-4 times of scope of the 3rd sheet material finished product thickness.At this moment, require when first block of sheet material is produced in finish rolling, second, third piece sheet material all must finish the production of rough rolling step, is in and treats temperature state.
Under this mode of production, require the temperature of first finish rolling supplied materials will be lower than 30-40 ℃ of normal supplied materials temperature, the board briquette of second finish rolling supplied materials will be lower than 20-30 ℃ of normal supplied materials temperature.At this moment, the slab tapping temperature of heating furnace also will be adjusted with amplitude ground, and the tapping temperature of the burning control control slab by heating furnace satisfies the requirement of finish rolling and roughing.
Treat in the middle of traditional individual plates controlled rolling needs that temperature, the controlled rolling of the individual plates among the present invention treat temperature in the middle of no longer needing, but directly finish rollingly, be very different with traditional individual plates controlled rolling.The basic step of individual plates controlled rolling of the present invention sees also Fig. 1:
1) starts the individual plates controlled rolling;
2) according to the 6-8 times of finish rolling inlet thickness to first block of sheet material of finished product sheet material THICKNESS CALCULATION of first block of sheet material;
3) according to the 4-6 times of finish rolling inlet thickness to second block of sheet material of finished product sheet material THICKNESS CALCULATION of second block of sheet material;
4) according to the 3-4 times of finish rolling inlet thickness to the 3rd block of sheet material of finished product sheet material THICKNESS CALCULATION of the 3rd block of sheet material;
5) rolling procedure and the rolling time tz1 of first block of slab of calculating;
6) if the slab quantity of this individual plates controlled rolling surpasses 1, then calculate the maximum time of staying temperature td1 of second block of slab, otherwise, step 12 entered;
7) calculate that according to the maximum time of staying temperature td1 of second block of slab second block of slab begins temperature when rolling at finishing mill;
8) rolling procedure and the rolling time tz2 of second block of slab of calculating;
9) if the slab quantity of this individual plates controlled rolling surpasses 2, then calculate the maximum time of staying temperature td2 of the 3rd block of slab, otherwise, step 12 entered;
10) calculate that according to the maximum time of staying temperature td2 of the 3rd block of slab the 3rd block of slab begins temperature when rolling at finishing mill;
11) rolling procedure of the 3rd block of slab of calculating;
12) finish the production control of every block of plate according to the rolling procedure that calculates, this individual plates controlled rolling finishes.
The plurality of plates intersection controlled rolling mode of production:
Same batch of needs carry out the rolling slab quantity of continuous control greater than 3, adopt the controlled rolling of multi-sheets intersection.Characteristics of the present invention are that the sheet material of continuous rolling in one batch no longer requires to have identical kind, identical trimmed size, as long as the sheet material of this batch is come out of the stove continuously.
The characteristics that controlled rolling of the present invention is produced are: when multi-sheets is rolling, automatically determine the piece number of tandem rolling slab according to the production schedule, even the diverse sheet material of kind or specification as long as can determine its performance requirement, can carry out controlled rolling.In first of finishing mill slab phase I during rolling finishing, second block of slab is in the rolling state for the treatment of, and be same, and in second slab phase I during rolling finishing, the 3rd block of slab is in the wait as-rolled condition, the like ...At this moment, the thickness of the inlet thickness of finish rolling during according to normal produce is controlled, and namely finished product thickness 3-4 doubly determines inlet thickness.
Basic step of the present invention sees also Fig. 2 as example illustrates take the tandem rolling of 4 blocks of sheet materials:
1) starts the intersection controlled rolling;
2) calculate intermediate blank and the finished product information that needs the rolling sheet material of continuous control;
3) calculate respectively the rolling procedure of these four blocks of sheet materials;
4) the time of staying temperature t1 of first block of plate controlled rolling slab of calculating;
5) the total time ts of 3 sheet material the first rolling processes in calculating back;
6) if ts-t1 in rational time range, 3 blocks of sheet materials of back are produced according to the rolling procedure of setting; If ts-t1 much larger than rational time range, needs to reduce the road number of times of follow-up three slab the first rolling processes so, recomputate ts, until satisfy rational time range; If ts-t1 is much smaller than rational time range, need so to increase the supplied materials thickness of next three blocks of slabs or the slab quantity that tandem rolling is carried out in increase, recomputate the rolling procedure of next three blocks of slabs and the total time ts of the first rolling process, until satisfy rational scope;
7) according to the rolling procedure of setting, carry out the production of first plate the first rolling process, until treat warm passage;
8) when first block of plate treated temperature, finish second, third, the first rolling process of the 4th block of plate is rolling;
9) after rolling the finishing of the first rolling process of the 4th block of plate, the second stage of first block of plate of beginning is rolling, until rolling finishing;
10) after first rolling finishing of plate, it is rolling that second block of plate begins the second rolling process;
11) after second rolling finishing of plate the second rolling process, it is rolling that the 3rd block of plate begins the second rolling process;
12) after the 3rd rolling finishing of plate the second rolling process, it is rolling that the 4th block of plate begins the second rolling process;
13) after the 4th rolling finishing of plate the second rolling process, this plurality of plates intersects controlled rolling to be finished.
Realize that step of the present invention is:
A, determine to adopt monolithic sheet material controlled rolling or multi-sheets to intersect controlled rolling according to the production schedule;
The controlled rolling of B, same batch of no more than 3 blocks of sheet materials is produced according to monolithic sheet material temperature-controlled rolling, and step is with reference to individual plates controlled rolling production method;
The controlled rolling of C, same batch of 4 and 4 blocks above sheet materials is produced according to the intersection controlled rolling of multi-sheets, and step is with reference to plurality of plates intersection controlled rolling production method.
Beneficial effect of the present invention is: the sheet material temperature-controlled rolling for many kinds, many specifications has proposed two kinds of production control modes, the controlled rolling that has solved different cultivars, different size with batch the production problem, for the organization of production of manufacturing enterprise provides great convenience.
Description of drawings
Fig. 1 is the flow chart of middle Wide and Thick Slab individual plates controlled rolling method.
Fig. 2 is the flow chart of middle Wide and Thick Slab plurality of plates intersection controlled rolling method.
Fig. 3 is the system schematic of middle Wide and Thick Slab controlled rolling technology.
The specific embodiment
Describe middle Wide and Thick Slab controlled rolling technology Application Example of the present invention in detail below in conjunction with accompanying drawing.
Embodiment one
See also Fig. 3, the present invention forms schematic diagram in the system that certain steel mill is applied to production control.Mainly comprise following a few part: the production schedule, data-interface, controlled rolling mode are selected module, intersection controlled rolling module (contain rules and divide initialization module, rolling time computing module 1, rolling process division adjustment module, rolling schedule calculation module 1), monolithic controlled rolling module (containing finish rolling inlet thickness distribution module, maximum time of staying temperature computing module, rolling time computing module 2, rolling schedule calculation module 2), production control module.The below introduces the content of each several part in detail.
The production schedule, by manufacturing execution system (MES) or artificial the formulation, according to known production order, the order that Wide and Thick Slab is produced in the arrangement, kind, specification, quantity etc.
Data-interface is used for Wide and Thick Slab controlled rolling system and outside swap data, and it can be divided into input data-interface and output data-interface.Wherein, the input data are production schedules, and the output data are producting rule and modes of production that middle Wide and Thick Slab controlled rolling system-computed obtains.
The controlled rolling mode is selected module, is used for determining the basic mode of controlled rolling, and alternative controlled rolling mode comprises individual plates controlled rolling and the controlled rolling of plurality of plates intersection; Usually, when the slab number that needs controlled rolling during more than or equal to 4, adopt plurality of plates to intersect the controlled rolling mode, other the time, adopt individual plates controlled rolling mode.
Intersection controlled rolling module for the treatment of plurality of plates intersection controlled rolling mode, wherein comprises 4 submodules:
Rules are divided initialization module, and the rolling procedure of each slab of controlled rolling of being used for intersecting is divided into 2 rolling processes, becomes respectively the first rolling process and the second rolling process;
Rolling time computing module 1 is used for calculating the time of staying temperature of first block of plate and the first rolling process rolling time of other plates;
Rolling process is divided adjustment module, according to the result of calculation of computing module between rolling 1, regulates the rolling procedure of each slab and divides, and time of staying temperature and rolling time are mated mutually;
Rolling schedule calculation module 1 is divided according to the rolling procedure of formulating, and calculates the rolling procedure of each slab of tandem rolling.
Monolithic controlled rolling module, for the treatment of individual plates controlled rolling mode, comprising four submodules:
Finish rolling inlet thickness distribution module is used to specify the finish rolling supplied materials thickness that adopts individual plates controlled rolling mode;
Maximum time of staying temperature computing module is used for calculating the maximum time of staying temperature that each slab allows;
Rolling time computing module 2 is used for calculating the required time of each slab rolling;
Rolling schedule calculation module 2 is used for calculating the slab rolling rules when adopting individual plates controlled rolling mode.
The production control module, controlled rolling mode and rolling procedure by Wide and Thick Slab controlled rolling system in the data-interface acquisition formulates are used for the production control of Wide and Thick Slab.
Claims (7)
1. Wide and Thick Slab controlled rolling technology in a kind, this technology is used for Wide and Thick Slab production, it is characterized in that, described technology comprises that data-interface, controlled rolling mode select module, intersect controlled rolling module, monolithic controlled rolling module: described data-interface is used for Wide and Thick Slab controlled rolling system and outside swap data;
Described controlled rolling mode is selected module, is used for determining the basic mode of controlled rolling;
Described intersection controlled rolling module is for the treatment of plurality of plates intersection controlled rolling mode;
Described monolithic controlled rolling module is for the treatment of individual plates controlled rolling mode.
2. middle Wide and Thick Slab controlled rolling technology according to claim 1 is characterized in that, can adopt individual plates controlled rolling mode and plurality of plates intersection controlled rolling mode to organize production, to steel grade, the not constraint of product specification of sheet material.
3. data-interface according to claim 1 is characterized in that, is divided into input data-interface and output data-interface; Wherein, the input data are production schedules, and the output data are producting rule and modes of production that middle Wide and Thick Slab controlled rolling system-computed obtains.
4. controlled rolling mode according to claim 1 is selected module, it is characterized in that, selectable controlled rolling mode comprises individual plates controlled rolling and the controlled rolling of plurality of plates intersection; When the slab number that needs controlled rolling during more than or equal to 4, adopt plurality of plates to intersect the controlled rolling mode, otherwise adopt individual plates controlled rolling mode.
5. intersection controlled rolling module according to claim 1 is characterized in that, comprises 4 submodules: rules are divided initialization module, rolling time computing module 1, rolling process division adjustment module, rolling schedule calculation module 1; Wherein, rules are divided initialization module, and the rolling procedure of each slab of controlled rolling of being used for intersecting is divided into 2 rolling processes; Rolling time computing module 1 is used for calculating the time of staying temperature of first block of plate and the first rolling process rolling time of other plates; Rolling process is divided adjustment module, according to the result of calculation of computing module between rolling 1, regulates the rolling procedure of each slab and divides, and time of staying temperature and rolling time are mated mutually; Rolling schedule calculation module 1 is divided according to the rolling procedure of formulating, and calculates the rolling procedure of each slab of tandem rolling.
6. monolithic controlled rolling module according to claim 1 is characterized in that, comprises 4 submodules: finish rolling inlet thickness distribution module, maximum time of staying temperature computing module, rolling time computing module 2, rolling schedule calculation module 2; Wherein, finish rolling inlet thickness distribution module is used to specify the finish rolling supplied materials thickness that adopts individual plates controlled rolling mode; Maximum time of staying temperature computing module is used for calculating the maximum time of staying temperature that each slab allows; Rolling time computing module 2 is used for calculating the required time of each slab rolling; Rolling schedule calculation module 2 is used for calculating the slab rolling rules when adopting individual plates controlled rolling mode.
7. one kind is utilized the described middle Wide and Thick Slab controlled rolling technology of claim 1 to 6 any one, it is characterized in that, may further comprise the steps:
Steps A, obtain production schedule information by data-interface;
Step B, judge whether have continuous sheet material more than 4 or 4 to need controlled rolling in the production schedule; If the controlled rolling module of then selecting to intersect is processed refer step C; If needing the continuous sheet material quantity of controlled rolling in the production schedule is 1 to 3, then select monolithic controlled rolling resume module, refer step D;
Step C, the controlled rolling resume module flow process of intersecting are at first divided rolling procedures to these whole sheet materials that intersect the controlled rolling processing, all are divided into 2 rolling processes; Then calculate the time of staying temperature of first block of plate and the first rolling process rolling time of other plates, and regulate accordingly the rolling process splitting scheme of each sheet material, time of staying temperature and rolling time are mated mutually; According to the rolling procedure splitting scheme of formulating, calculate the rolling procedure of each slab of tandem rolling at last;
Step D, monolithic controlled rolling resume module flow process are at first distributed the finish rolling inlet thickness of whole sheet materials that this monolithic controlled rolling processes; Then calculate each plate rolling required time and maximum time of staying temperature; Calculate at last the slab rolling rules when adopting individual plates controlled rolling mode;
Step e, the controlled rolling mode and the slab rolling rules that calculate are delivered to the production control module by data-interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101951509A CN102873104A (en) | 2011-07-13 | 2011-07-13 | Medium width thick plate controlled rolling technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101951509A CN102873104A (en) | 2011-07-13 | 2011-07-13 | Medium width thick plate controlled rolling technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102873104A true CN102873104A (en) | 2013-01-16 |
Family
ID=47474746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101951509A Pending CN102873104A (en) | 2011-07-13 | 2011-07-13 | Medium width thick plate controlled rolling technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102873104A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104117539A (en) * | 2014-06-28 | 2014-10-29 | 济钢集团有限公司 | Composite billet manufacturing and automatic rolling technology for heavy plate mill |
| CN114733907A (en) * | 2022-04-08 | 2022-07-12 | 北京首钢自动化信息技术有限公司 | Warm rolling system and method for hot rolling production line |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1059676A (en) * | 1991-08-01 | 1992-03-25 | 冶金工业部钢铁研究总院 | Cut deal controlled rolling slab is treated warm method and apparatus |
| JPH0663623A (en) * | 1992-08-20 | 1994-03-08 | Sumitomo Metal Ind Ltd | Method for controlling and rolling plate width of thick plate |
| JP2001129606A (en) * | 1999-10-28 | 2001-05-15 | Sumitomo Metal Ind Ltd | Method for control of plate crown in hot rolling |
| CN101658870A (en) * | 2009-09-16 | 2010-03-03 | 北京理工大学 | Optimization method of rolling rhythm of single-stand four-high rolling mill |
| CN101690948A (en) * | 2009-10-10 | 2010-04-07 | 北京理工大学 | Pressing load distribution method for double-stander medium plate production line |
-
2011
- 2011-07-13 CN CN2011101951509A patent/CN102873104A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1059676A (en) * | 1991-08-01 | 1992-03-25 | 冶金工业部钢铁研究总院 | Cut deal controlled rolling slab is treated warm method and apparatus |
| JPH0663623A (en) * | 1992-08-20 | 1994-03-08 | Sumitomo Metal Ind Ltd | Method for controlling and rolling plate width of thick plate |
| JP2001129606A (en) * | 1999-10-28 | 2001-05-15 | Sumitomo Metal Ind Ltd | Method for control of plate crown in hot rolling |
| CN101658870A (en) * | 2009-09-16 | 2010-03-03 | 北京理工大学 | Optimization method of rolling rhythm of single-stand four-high rolling mill |
| CN101690948A (en) * | 2009-10-10 | 2010-04-07 | 北京理工大学 | Pressing load distribution method for double-stander medium plate production line |
Non-Patent Citations (2)
| Title |
|---|
| 姚小兰等: "控制轧制节奏的优化", 《北京理工大学学报》, vol. 24, no. 4, 30 April 2004 (2004-04-30) * |
| 矫志杰等: "首钢中厚板轧机过程控制系统", 《东北大学学报》, vol. 5, no. 5, 31 May 2004 (2004-05-31) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104117539A (en) * | 2014-06-28 | 2014-10-29 | 济钢集团有限公司 | Composite billet manufacturing and automatic rolling technology for heavy plate mill |
| CN114733907A (en) * | 2022-04-08 | 2022-07-12 | 北京首钢自动化信息技术有限公司 | Warm rolling system and method for hot rolling production line |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102284507B (en) | Rolling-mill plate control method for high-strength thin specification steel plate | |
| CN101670371B (en) | Method for controlling quality of edges of intermediate slabs | |
| CN104785521A (en) | Method and system for rolling 410S ferrite stainless steel | |
| CN101337237A (en) | Thickness automatic allocation process of single-frame double coiling-aluminum hot milling roll | |
| CN105268748A (en) | Hot rolling load distribution method based on product classification | |
| CN103962392B (en) | A kind of continuous hot-rolling mill mm finishing mill unit Dynamic load control method | |
| CN106269911B (en) | Roughing reduction load distribution control method and roughing control system | |
| CN104384199A (en) | Control method used during flying gauge change of cold continuous rolling | |
| CN110434172B (en) | Load distribution calculation method for continuous rolling of furnace coil and finishing mill group | |
| CN106862280A (en) | A kind of heavy and medium plate mill roughing axial rolling reduction in pass distribution method | |
| CN106269905B (en) | A kind of control method solving the intensive cooling zone discount steel scrap of hot-rolling high-strength steel | |
| CN103817155A (en) | Method for controlling shape of thick steel plate with thickness greater than 50mm | |
| CN103042043A (en) | Method for controlling strip steel head and tail widths through coil box production process | |
| CN102873104A (en) | Medium width thick plate controlled rolling technology | |
| CN102989786B (en) | Optimal control system of shape and thickness of steel plate | |
| CN103252355A (en) | Rolling schedule computing method for medium and thick plate controlled rolling | |
| CN103861873A (en) | Texturing roll rolling system and method of UCMW tandem cold rolling mill | |
| CN111411215B (en) | Furnace temperature comprehensive decision-making method for multiple steel billet objects | |
| CN102527734B (en) | Steel plate controlling and rolling method | |
| CN102581028B (en) | Hardness compensation method for controlling band steel hot-rolling molding process | |
| CN102896148B (en) | Medium plate double-frame rolling load distribution method | |
| CN104001735B (en) | A kind of continuous hot-rolling mill mm finishing mill unit frame dynamic rate control method | |
| CN104408283B (en) | Blank model selection method of single sizing plate in medium plate rolling | |
| CN103894424A (en) | Method for regulation and control on tinplate rolling operation of single-rack reversible rolling mill | |
| CN105344719B (en) | A kind of belt steel rolling control method and roll control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130116 |