CN103111473A - Six-roll cold mill ultra-wide aluminum strip surface on-line degreasing device - Google Patents
Six-roll cold mill ultra-wide aluminum strip surface on-line degreasing device Download PDFInfo
- Publication number
- CN103111473A CN103111473A CN2013100743368A CN201310074336A CN103111473A CN 103111473 A CN103111473 A CN 103111473A CN 2013100743368 A CN2013100743368 A CN 2013100743368A CN 201310074336 A CN201310074336 A CN 201310074336A CN 103111473 A CN103111473 A CN 103111473A
- Authority
- CN
- China
- Prior art keywords
- air knife
- rolling oil
- cold mill
- roll cold
- air
- 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
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Cleaning In General (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a six-roll cold mill ultra-wide aluminum strip surface on-line degreasing device. An upper rolling oil collection plate and a lower rolling oil collection plate are arranged at the front end of a six-roll cold mill outlet, an upper winding prevention guide plate and a lower winding prevention guide plate are arranged in front of the upper rolling oil collection plate and the lower rolling oil collection plate, atomization devices are additionally arranged below the upper winding prevention guide plate and the lower winding prevention guide plate, an inverted-V-shaped air knife is arranged above the upper winding prevention guide plate, a plurality of negative pressure suction nozzles are arranged on the lower winding prevention guide plate, a negative pressure device is arranged on a housing frame, and the upper rolling oil collection plate and the lower rolling oil collection plate are fixed on a cold mill outlet side housing frame. According to the six-roll cold mill ultra-wide aluminum strip surface on-line degreasing device, the quality shortcomings that oil spots and oil marks exist on an aluminum strip surface and the aluminum strip surface is poor in color and luster after annealing due to the fact that the amount of oil on the aluminum strip surface is large in the process of rolling of a six-roll cold mill ultra-wide aluminum strip are overcome, losses and rolling oil consumption due to rerolling and remanufacturing of products are reduced, production efficiency can be effectively improved, and production cost can be saved.
Description
Technical field
The present invention relates to the aluminium processing technique field, specifically the online degreasing unit in the super wide cut during aluminium strip rolling process of a kind of six-roll cold mill surface.
Background technology
During aluminium strip rolling process, the ROLLING OIL Main Function is cooling, lubricated and cleaning roll and aluminium strip.But working roll roll gap, working roll and intermediate calender rolls, intermediate calender rolls and backing roll end and roll surface can with ROLLING OIL from the inlet of rolling mill side inflow or take outlet side to, be splashed on the plate surface when producing.If in whole plate rolling process, milling train oil removing system effect does not reach requirement, then can cause the residual a large amount of ROLLING OIL of plate surface and a large amount of aluminium powder enrichment, have a strong impact on thereby directly follow-up sheet material face is caused, plate surface can form butter spot, mimeograph, oil stain, dark pool after the annealing, directly affect the surface quality of product, more than thickness 0.5 ㎜, more outstanding in the above aluminium sheet band of the fabric width 1800mm production process.
Summary of the invention
The purpose of this invention is to provide the online deoiling method in the super wide cut during aluminium strip rolling process of a kind of six-roll cold mill surface, solved the mass defects such as aluminium sheet belt surface oil mark after the annealing that the super wide cut during aluminium strip rolling process of six-roll cold mill surface band oil mass causes greatly, mimeograph, shade deviation----.
Technical scheme of the present invention is:
At six-roll cold mill outlet front end ROLLING OIL collecting board and lower ROLLING OIL collecting board are set, stripper and lower stripper on upper ROLLING OIL collecting board and lower ROLLING OIL collecting board front are, respectively install atomising device below the upper and lower stripper additional, " V " shape air knife is arranged down above the upper stripper, some negative pressure suction nozzles are housed on the lower stripper, negative pressure device is housed on the memorial archway, and upper and lower ROLLING OIL collecting board is fixed on the milling train outlet side memorial archway.
Atomising device is made of two symmetrically arranged atomizing air knives and air knife base, air knife angle adjustment lever, air knife base slide rail, air knife position adjustment screw rod and air motor; The atomizing air knife connects the air knife base by the hollow pipeline with turning joint, hollow tube with turning joint is connected with the air knife angle adjustment lever, hollow tube with turning joint is connected on the compressed air piping by flexible pipe, the air knife base sliding is connected on the air knife base slide rail, the air knife position is adjusted screw rod and is placed in the air knife base slide rail, air motor places on the air knife base slide rail, air knife base slide rail is fixed on the antiwind guide plate, the air knife angle adjustment lever is fixed on the mill housing by latch segment and locking nut, air knife is shaped as " fan-shaped " or " palm shape ", the air knife front opening, air knife and band form 15～20 ° angle, and the Height Adjustment nut is housed on the air knife angle adjustment lever.
The negative pressure suction nozzle is conical, and the large end of its mouthful is little, and the bottom is connected to the air siphon device by negative-pressure pipeline, and the negative pressure device on the memorial archway is: some negative pressure suction nozzles are integrated on the same steel and are fixed on the memorial archway of milling train both sides; Negative pressure suction nozzle on the lower stripper directly processes at lower stripper.
Upper and lower ROLLING OIL collecting board is the arc aluminium sheet, and upper ROLLING OIL collecting board bottom bending is " U " shape.
" V " shape steel of two bottom slots are combined, the top forms uniform " V " shape slit, form bottom band cavity, " V " shape air knife of opening is arranged at the top, " V " shape air knife that falls is fixed on the upper stripper with sealing joint strip, the top, middle part connects compressed air by pipeline, can blow out uniform brattice during production.
The present invention has the following advantages compared with the prior art:
1. below exporting upper and lower stripper, six-roll cold mill respectively installs a cover self-control atomizing air knife additional, the ROLLING OIL of fully carrying on the pulverizer plate face, and atomizing air knife wind direction can purge angle and pressure according to band width, thickness adjustment; Install the negative pressure suction nozzle additional at mill housing and the anti-tangle bottom guide of outlet, rolling oil mist after the atomizing and the rolling oil droplet that splashed are effectively guided and reclaim, avoided ROLLING OIL atomizing process because compressed air blows on stripper and the memorial archway again bounce-back with ROLLING OIL and arrived strip surface.
2. install two ROLLING OIL collecting boaries additional at the six-roll cold mill outlet side, the ROLLING OIL that effectively stops roller rotational to take outlet to is taken on the plate face, wherein go up ROLLING OIL collecting board bottom and be bent into " U " shape, can be with the ROLLING OIL drainage of collecting to the milling train both sides.
3. install " V " shape air knife at upper stripper, utilize its even brattice that blows out effectively condensation on the band top device and the rolling oil droplet that splashes to be intercepted, the ROLLING OIL that " V " shape air knife that falls will be contained in after the discrepancy in elevation that forms on the stripper will intercept drains into the milling train both sides smoothly, can prevent effectively that ROLLING OIL from falling strip surface.
The invention solves the mass defects such as aluminium sheet belt surface oil mark after the annealing that the super wide cut during aluminium strip rolling process of six-roll cold mill surface band oil mass causes greatly, mimeograph, shade deviation, having reduced product returns and rolls, changes a social system the loss that causes and the consumption consumption of ROLLING OIL, energy Effective Raise production efficiency saves production cost.
Description of drawings
Fig. 1 is the online degreasing unit structural representation of six-roll cold mill of the present invention.
Fig. 2 is the online degreasing unit atomising device of six-roll cold mill of the present invention structural representation.
Fig. 3 is the online degreasing unit atomizing of six-roll cold mill of the present invention air knife structure schematic diagram.
Fig. 4 is that the online degreasing unit of six-roll cold mill of the present invention is installed in the negative pressure nozzle structure schematic diagram on the lower stripper.
Fig. 5 is " V " air knife structure schematic diagram of the online degreasing unit of six-roll cold mill of the present invention.
Fig. 6 is that the online degreasing unit of six-roll cold mill of the present invention is installed in the negative pressure nozzle structure schematic diagram on the memorial archway.
Among the figure: 1-working roll, 2-intermediate calender rolls, 3-backing roll, the upper stripper of 4-, on the 5-(memorial archway) negative pressure device, the upper ROLLING OIL collecting board of 6-, the 7-atomising device, 8-aluminium strip, ROLLING OIL collecting board under the 9-, 10-template roller, 11-coiling machine, 12-memorial archway, stripper under the 13-, 14-is " V " shape air knife, the 15-locking nut, the 16-latch segment, 17-air knife angle adjustment lever, 18-air knife base, the 19-air knife that atomizes, 20-air knife Height Adjustment nut, 21-turning joint, the 22-air motor, screw rod, 24-air knife base slide rail, 25-negative pressure suction nozzle are adjusted in 23-air knife position, the 26-negative-pressure pipeline, the 27-compressed air piping.
The specific embodiment
As shown in Figure 1, at six-roll cold mill outlet front end ROLLING OIL collecting board 6 and lower ROLLING OIL collecting board 9 are set, stripper 4 and lower stripper 13 on the front of upper ROLLING OIL collecting board and lower ROLLING OIL collecting board is, respectively install atomising device 7 below the upper and lower stripper additional, " V " shape air knife 14 is arranged down above the upper stripper, some negative pressure suction nozzles 25 are housed on the lower stripper, as shown in Figure 4, negative pressure device 5 is housed on the memorial archway 12, as shown in Figure 6, upper and lower ROLLING OIL collecting board is fixed on the milling train outlet side memorial archway.
As shown in Figure 2, atomising device 7 is made of two symmetrically arranged atomizing air knives 19 and air knife base 18, air knife angle adjustment lever 17, air knife base slide rail 24, air knife position adjustment screw rod 23 and air motor 22; The atomizing air knife connects air knife base 18 by the hollow pipeline with turning joint 21, hollow tube with turning joint is connected with air knife angle adjustment lever 17, hollow tube with turning joint is connected on the compressed air piping by flexible pipe, air knife base 18 is slidingly connected on the air knife base slide rail 24, the air knife position is adjusted screw rod 23 and is placed in the air knife base slide rail, air motor places on the air knife base slide rail, air motor is adjusted screw rod 23 transmissions by the air knife position and is realized mobile, air motor is equipped with encoder, can accurately locate air knife in the position of plate width; Air knife base slide rail is fixed on the antiwind guide plate, the air knife angle adjustment lever is fixed on the mill housing by latch segment 16 and locking nut 15, air knife is shaped as " fan-shaped " or " palm shape ", as shown in Figure 3, the air knife front opening, the lip on close Strip surface slightly length can effectively be controlled wind direction, compressed air can be blown to strip surface uniformly, at each air knife pipeline Pressure gauge is housed, can accurately controls the blast size.Air knife and band form 15～20 ° angle, and the direction of the wind that it blows out and strip-rolling opposite direction are equipped with Height Adjustment nut 20 on the air knife angle adjustment lever; Air knife angle adjustment lever 17 and air knife Height Adjustment nut 20 can be adjusted arbitrarily the angle on tuyere and aluminum strip surface, wherein air knife angle adjustment lever one end is equipped with latch segment 16, latch segment is fixed on the mill housing, its short transverse has two slotted holes, rule is arranged on the hole, the air knife angle adjustment lever can move up and down at the latch segment place, realize the upset of air knife, on the air knife angle adjustment lever rule is arranged, it pulls out, advances the angle that can accurately locate tuyere and strip side portion, and the air knife angle adjustment lever clamps latch segment by nut and is fixed; The Height Adjustment nut can freely be adjusted the angle negative pressure suction nozzle 25 of air knife and strip surface for conical, the large end of its mouthful, is little, the bottom is connected to the air siphon device by negative-pressure pipeline, negative pressure device 5 on the memorial archway is integrated on the same steel for some negative pressure suction nozzles 25, and is fixed on the memorial archway of milling train both sides; Negative pressure suction nozzle 25 on the lower stripper directly processes at lower stripper.Upper and lower ROLLING OIL collecting board is the arc aluminium sheet, and upper ROLLING OIL collecting board bottom bending is " U " shape." V " shape steel by two bottom slots are combined, form bottom band cavity, " V " shape air knife 14 in uniform " V " shape slit is arranged at the top, " V " shape air knife that falls is fixed on the upper stripper with sealing joint strip, the top, middle part connects compressed air by pipeline, can blow out uniform brattice during production, as shown in Figure 5.
Claims (9)
1. online degreasing unit of the super wide cut aluminium sheet of six-roll cold mill belt surface, it is characterized in that: at six-roll cold mill outlet front end ROLLING OIL collecting board and lower ROLLING OIL collecting board are set, stripper and lower stripper on upper ROLLING OIL collecting board and lower ROLLING OIL collecting board front are, respectively install atomising device below the upper and lower stripper additional, " V " shape air knife is arranged down above the upper stripper, some negative pressure suction nozzles are housed on the lower stripper, negative pressure device is housed on the memorial archway, and upper and lower ROLLING OIL collecting board is fixed on the milling train outlet side memorial archway.
2. the online degreasing unit of the super wide cut aluminium sheet of six-roll cold mill according to claim 1 belt surface is characterized in that described atomising device is made of two symmetrically arranged atomizing air knives and air knife base, air knife angle adjustment lever, air knife base slide rail, air knife position adjustment screw rod and air motor; The atomizing air knife connects the air knife base by the hollow pipeline with turning joint, hollow tube with turning joint is connected with the air knife angle adjustment lever, hollow tube with turning joint is connected on the compressed air piping by flexible pipe, the air knife base sliding is connected on the air knife base slide rail, the air knife position is adjusted screw rod and is placed in the air knife base slide rail, air motor places on the air knife base slide rail, air knife base slide rail is fixed on the antiwind guide plate, and the air knife angle adjustment lever is fixed on the mill housing by latch segment and locking nut.
3. the online degreasing unit of the super wide cut aluminium sheet of six-roll cold mill according to claim 2 belt surface, it is characterized in that described air knife is shaped as " fan-shaped " or " palm shape ", the air knife front opening, air knife and band form 15～20 ° angle, and the Height Adjustment nut is housed on the air knife angle adjustment lever.
4. the online degreasing unit of the super wide cut aluminium sheet of six-roll cold mill according to claim 2 belt surface, it is characterized in that described latch segment short transverse has two slotted holes, rule is arranged on the hole, the air knife angle adjustment lever can move up and down at the latch segment place, realize the upset of air knife, on the air knife angle adjustment lever rule is arranged.
5. the online degreasing unit of the super wide cut aluminium sheet of six-roll cold mill according to claim 1 belt surface is characterized in that the negative pressure suction nozzle on the lower stripper directly processes at lower stripper.
6. the online degreasing unit of the super wide cut aluminium sheet of six-roll cold mill according to claim 1 belt surface, it is characterized in that the negative pressure device on the memorial archway is: some negative pressure suction nozzles are integrated on the same steel and are fixed on the memorial archway of milling train both sides.
7. the online degreasing unit of the super wide cut aluminium sheet of six-roll cold mill according to claim 1 belt surface is characterized in that described negative pressure suction nozzle for conical, and the large end of its mouthful is little, and the bottom is connected to the air siphon device by negative-pressure pipeline.
8. the online degreasing unit of the super wide cut aluminium sheet of six-roll cold mill according to claim 1 belt surface is characterized in that upper and lower ROLLING OIL collecting board is the arc aluminium sheet, and upper ROLLING OIL collecting board bottom bending is " U " shape.
9. the online degreasing unit of the super wide cut aluminium sheet of six-roll cold mill according to claim 1 belt surface, it is characterized in that being combined by " V " shape steel of two bottom slots, forming the bottom is with cavity, top that " V " shape air knife in uniform " V " shape slit is arranged, " V " shape air knife that falls is fixed on the upper stripper with sealing joint strip, the top, middle part connects compressed air by pipeline, blows out uniform brattice during production.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310074336.8A CN103111473B (en) | 2013-03-08 | 2013-03-08 | The online degreasing unit in a kind of six-roll cold mill ultra-wide Aluminum sheets surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310074336.8A CN103111473B (en) | 2013-03-08 | 2013-03-08 | The online degreasing unit in a kind of six-roll cold mill ultra-wide Aluminum sheets surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103111473A true CN103111473A (en) | 2013-05-22 |
| CN103111473B CN103111473B (en) | 2015-10-28 |
Family
ID=48409886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310074336.8A Active CN103111473B (en) | 2013-03-08 | 2013-03-08 | The online degreasing unit in a kind of six-roll cold mill ultra-wide Aluminum sheets surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103111473B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106362341A (en) * | 2016-10-07 | 2017-02-01 | 上海格拉曼国际消防装备有限公司 | Automatic purging cleaning device for fire hose |
| CN108686511A (en) * | 2018-06-07 | 2018-10-23 | 安徽海螺建材设计研究院有限责任公司 | A kind of reaction tower deashing device |
| CN110404963A (en) * | 2019-07-26 | 2019-11-05 | 薛江波 | A kind of ferritic stainless steel process for producing cold rolled strip steel |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4691549A (en) * | 1981-12-24 | 1987-09-08 | United Engineering Rolling Mills, Inc. | Apparatus for removing liquid from a strip in a rolling mill and method thereof |
| CN2500402Y (en) * | 2001-05-21 | 2002-07-17 | 山东平阴铝厂 | Greasy dirt purger for aluminium cold mill |
| CN201008893Y (en) * | 2007-02-13 | 2008-01-23 | 韩平德 | Purging device of cold rolling aluminum plate |
| CN201267833Y (en) * | 2008-10-21 | 2009-07-08 | 登电集团铝加工有限公司 | Oil liquid purging device |
| CN201470684U (en) * | 2009-08-11 | 2010-05-19 | 江阴新仁科技有限公司 | Control device of surface oil stain of rolling mill aluminium plate belt material |
| CN101780485A (en) * | 2009-12-30 | 2010-07-21 | 一重集团大连设计研究院有限公司 | Emulsion cleaning device |
| CN201618731U (en) * | 2010-03-22 | 2010-11-03 | 徐耳顺 | Oil-removing blowing device |
| CN102085536A (en) * | 2010-12-22 | 2011-06-08 | 中色科技股份有限公司 | Negative-pressure suction process and device for removing oil |
| CN202438556U (en) * | 2012-02-29 | 2012-09-19 | 扬州冶金机械有限公司 | Strip plate face blowing device of six-roll cold rolling mill |
-
2013
- 2013-03-08 CN CN201310074336.8A patent/CN103111473B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4691549A (en) * | 1981-12-24 | 1987-09-08 | United Engineering Rolling Mills, Inc. | Apparatus for removing liquid from a strip in a rolling mill and method thereof |
| CN2500402Y (en) * | 2001-05-21 | 2002-07-17 | 山东平阴铝厂 | Greasy dirt purger for aluminium cold mill |
| CN201008893Y (en) * | 2007-02-13 | 2008-01-23 | 韩平德 | Purging device of cold rolling aluminum plate |
| CN201267833Y (en) * | 2008-10-21 | 2009-07-08 | 登电集团铝加工有限公司 | Oil liquid purging device |
| CN201470684U (en) * | 2009-08-11 | 2010-05-19 | 江阴新仁科技有限公司 | Control device of surface oil stain of rolling mill aluminium plate belt material |
| CN101780485A (en) * | 2009-12-30 | 2010-07-21 | 一重集团大连设计研究院有限公司 | Emulsion cleaning device |
| CN201618731U (en) * | 2010-03-22 | 2010-11-03 | 徐耳顺 | Oil-removing blowing device |
| CN102085536A (en) * | 2010-12-22 | 2011-06-08 | 中色科技股份有限公司 | Negative-pressure suction process and device for removing oil |
| CN202438556U (en) * | 2012-02-29 | 2012-09-19 | 扬州冶金机械有限公司 | Strip plate face blowing device of six-roll cold rolling mill |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106362341A (en) * | 2016-10-07 | 2017-02-01 | 上海格拉曼国际消防装备有限公司 | Automatic purging cleaning device for fire hose |
| CN108686511A (en) * | 2018-06-07 | 2018-10-23 | 安徽海螺建材设计研究院有限责任公司 | A kind of reaction tower deashing device |
| CN108686511B (en) * | 2018-06-07 | 2023-05-19 | 安徽海螺集团有限责任公司 | Ash removal device for reaction tower |
| CN110404963A (en) * | 2019-07-26 | 2019-11-05 | 薛江波 | A kind of ferritic stainless steel process for producing cold rolled strip steel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103111473B (en) | 2015-10-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1474253B1 (en) | Device for keeping a cold-rolled strip dry in the outlet of strip rolling mills | |
| CN101642780A (en) | Intermediate blank cooling system and cooling control technology | |
| CN103521519A (en) | Cold-rolled steel strip rolling method | |
| CN205798014U (en) | A kind of cold-rolling mill plate face degreasing unit | |
| CN104192474A (en) | Aluminum sheet dedusting and conveying roller | |
| CN103111473A (en) | Six-roll cold mill ultra-wide aluminum strip surface on-line degreasing device | |
| CN203170732U (en) | Strip steel tempering lubricant purging device | |
| CN103203375B (en) | A kind of cold milling wet leveling machine purging system | |
| CN205988968U (en) | A kind of copper strips rolls post-production equipment | |
| CN104209321B (en) | For the smooth double secondary cold-rolling unit of Stand Mill six roller UCM that tinning substrate is produced | |
| CN102581043A (en) | Water mist cooling system and water mist cooling method for steel strip hot-rolling process | |
| CN105798072A (en) | Edge blowing system for flattening machine | |
| CN204182611U (en) | A kind of finish rolling calibrator backlight cleaning device | |
| EP3122480B2 (en) | Device for the contact-free cleaning of rollers, and method therefor | |
| CN108393363A (en) | Hot-rolled plate blank high-pressure aerial fog descaling device and method | |
| CN207494216U (en) | A kind of hot-strip high-pressure water descaling system | |
| CN202028619U (en) | Upper guide and guard device of steckel mill | |
| CN204412775U (en) | A kind of hot rolling line section cooling demister | |
| CN204234691U (en) | A kind of continuous-cast blank automatic dreg removing device | |
| CN210632661U (en) | Hot rolling roughing mill inlet and outlet air-jet device | |
| CN202591255U (en) | Precision rolling and dedusting device | |
| CN204657121U (en) | Strip steel purging device | |
| CN207204855U (en) | Backing roll swing type oil-scraping device | |
| CN207479204U (en) | A kind of round steel roller rolls empty purging combination and dispels emulsification liquid device | |
| CN2574794Y (en) | Roller mill material guiding device capable of eliminating belt steel bright stamp, bead defects |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |