CN103042243B - Processing method and processing device for converter trunnion deep-hole - Google Patents
Processing method and processing device for converter trunnion deep-hole Download PDFInfo
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- CN103042243B CN103042243B CN201310020413.1A CN201310020413A CN103042243B CN 103042243 B CN103042243 B CN 103042243B CN 201310020413 A CN201310020413 A CN 201310020413A CN 103042243 B CN103042243 B CN 103042243B
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- mechanical skid
- skid plateform
- converter
- drill
- gudgeon
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- 238000012545 processing Methods 0.000 title claims abstract description 31
- 238000003672 processing method Methods 0.000 title claims abstract description 27
- 238000003801 milling Methods 0.000 claims abstract description 37
- 241001125879 Gobio Species 0.000 claims description 52
- 238000000034 method Methods 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 11
- 238000003754 machining Methods 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 18
- 238000005266 casting Methods 0.000 abstract 5
- 238000005553 drilling Methods 0.000 description 19
- 238000007664 blowing Methods 0.000 description 5
- 230000009466 transformation Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
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- Drilling And Boring (AREA)
Abstract
The invention discloses a processing method for converter trunnion deep-hole which includes dismantling a rotation joint assembly at a trunnion end portion to clean the end face of the trunnion; marking the position of the deep-hole to be processed at the end face and installing a casting blank foundation member in a processing area; placing a mechanical slide unit on the casting blank foundation member, installing a milling power head at the mechanical slide unit and assembling a deep-hole drill at a main shaft of the milling power head; adjusting the height of the mechanical slide unit and the feed straightness of the deep-hole drill according to the marked position; fixing the mechanical slide unit at the casting blank foundation member; and processing the deep-hole to be processed by using the milling power head arranged at the mechanical slide unit. The processing method can perform deep-hole processing on the converter at a production line. The invention also discloses a processing device for converter trunnion deep-hole. The processing device comprises the casting blank foundation member, the mechanical slide unit fixed on the casting blank foundation member, the milling power head assembled at the mechanical slide unit and the drill assembled at the milling power head.
Description
Technical field
The present invention relates to steelmaking equipment technical field, more particularly, relate to a kind of gudgeon deep hole processing method for converter, also relate to a kind of gudgeon deep hole drilling apparatus for converter.
Background technology
Converter is the cylindric oxygen furnace steel container that can fascinate, it comprises top and bottom complex blowing stove and top-blown converter, wherein, top and bottom complex blowing stove has good advantage compared to top blast stove in mixing effect, smelting cycle etc., therefore in order to improve the performance of converter, in actual production, often top-blown converter is transformed into top and bottom complex blowing stove.
Additional processing deep hole on the gudgeon of converter is needed when top-blown converter being transformed into top and bottom combined blown converter, but at present, on gudgeon, converter need disassemble by production line by deep hole processing, therefore retrofit work often carries out in conjunction with the overhaul time that furnace shell replacing is carried out in converter, change backing ring, transformation is inconvenient.
In sum, how providing a kind of can avoid converter by the gudgeon deep hole processing method for converter that production line is pulled down, top and bottom combined blown converter is transformed into facilitate top-blown converter, and a kind of for the processing unit (plant) corresponding with above-mentioned processing method, be those skilled in the art's problem demanding prompt solutions.
Summary of the invention
In view of this, the invention provides a kind of gudgeon deep hole processing method for converter, it can avoid converter to disassemble by production line, making transformation for top-blown converter without the need to coordinating the converter overhaul time, being convenient to top-blown converter and transforming top and bottom combined blown converter as.The present invention also provides a kind of gudgeon deep hole drilling apparatus for converter, and it is corresponding with above-mentioned processing method, can realize carrying out gudgeon deep hole machining to the converter on production line, be convenient to top-blown converter to be transformed into top and bottom combined blown converter.
For achieving the above object, the invention provides following technical scheme:
For a gudgeon deep hole processing method for converter, comprise the steps:
1) remove the rotary joint assembly of trunnion end, clear up the end face of described gudgeon;
2) mark the position in hole to be processed on the end surface, at machining area, strand basis is installed;
3) mechanical skid plateform is placed on described strand basis, milling unit head is arranged on described mechanical skid plateform, and depth drill is assemblied on the main shaft of described milling unit head;
4) according to described step 2) in the position of mark adjust the height of described mechanical skid plateform, and adjust the feeding linearity of described depth drill;
5) described mechanical skid plateform is fixed on described strand basis;
6) the described milling unit head be arranged on described mechanical skid plateform is utilized to process described hole to be processed.
Preferably, in above-mentioned gudgeon deep hole processing method, described step 4) is specially: between described mechanical skid plateform and described strand basis, arrange parallels, to adjust the height of described mechanical skid plateform; The contact of the dial gauge of 2 pieces of belt supporting frames is made to withstand top and the sidepiece of described depth drill respectively, with the cylindrical of described gudgeon for benchmark, mechanical skid plateform described in low speed feeding, described mechanical skid plateform is adjusted again, until the deviation of the axis in the feeding axis of described depth drill and described hole to be processed meets processing request according to the measurement data of described dial gauge.
Preferably, in above-mentioned gudgeon deep hole processing method, described step 5) is: welding screw on described strand basis, makes pressing plate push down described mechanical skid plateform, and makes described stud through the pilot hole of described pressing plate, then on described stud, arranges nut and screw.
Preferably, in above-mentioned gudgeon deep hole processing method, described step 6) is 61) mechanical skid plateform described in feeding, makes the fluted drill processing pilot hole be assemblied on described milling unit head; 62) exit described fluted drill and dismantle, reinstalling the first drill gun, the mixing valve communicated with described first drill gun is connected with compressed air source with spray cooling device respectively by pipeline; Check the fit clearance between described first drill gun and described pilot hole, if above-mentioned fit clearance meets processing request, open described milling unit head, described spray cooling device and described compressed air source, regulate described mixing valve to convenient pressure and mechanical skid plateform described in feeding to process; 63) repeating said steps 62), the drill gun utilizing length longer continues processing, until complete processing.
For a gudgeon deep hole drilling apparatus for converter, comprising:
Strand basis;
Be fixed on the mechanical skid plateform on described strand basis;
Be assemblied in the milling unit head on described mechanical skid plateform; With
For being assemblied in the drill bit on described milling unit head.
Preferably, in above-mentioned gudgeon deep hole drilling apparatus, also comprise for the spray cooling device by being connected with the drill gun be assemblied on described milling unit head with the pipeline of mixing valve.
Preferably, in above-mentioned gudgeon deep hole drilling apparatus, the motor of described mechanical skid plateform is variable-frequency motor.
Gudgeon deep hole processing method for converter provided by the invention can avoid converter to pull down by production line, making transformation for top-blown converter without the need to coordinating the time of converter overhaul, can carry out at any time, being convenient to transform top-blown converter as top and bottom complex blowing stove.
In addition, the above-mentioned gudgeon deep hole processing method for converter avoids and converter is disassembled by production line, saves the time, decreases the workload of workman, and easy and simple to handle.
The present invention also provides a kind of gudgeon deep hole drilling apparatus for converter, comprises strand basis, is fixed on the mechanical skid plateform on above-mentioned strand basis, is assemblied in the milling unit head on above-mentioned mechanical skid plateform, and for being assemblied in the drill bit on above-mentioned milling unit head.
Gudgeon deep hole drilling apparatus for converter provided by the invention is corresponding with the gudgeon deep hole processing method for converter provided by the invention, and it can carry out gudgeon deep hole machining to the converter on production line, conveniently top-blown converter is transformed into top and bottom combined blown converter.
In addition, the gudgeon deep hole drilling apparatus volume for converter provided by the invention is little, lightweight, convenient installation, and it is little to take up room.
Meanwhile, the gudgeon deep hole drilling apparatus structure for converter provided by the invention is simple, be convenient to production and processing, and production cost is low.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The flow chart of the gudgeon deep hole processing method for converter that Fig. 1 provides for the embodiment of the present invention;
The structural representation of the gudgeon deep hole drilling apparatus for converter that Fig. 2 provides for the embodiment of the present invention;
The installation diagram for milling unit head and mechanical skid plateform in the gudgeon deep hole drilling apparatus of converter that Fig. 3 provides for the embodiment of the present invention;
Fig. 4 is the right view of Fig. 3;
Wherein, in Fig. 2-Fig. 4:
First variable-frequency motor 101; Feed change case 102; Slide unit 103; Slide 104; Shaft transmission 201; Second variable-frequency motor 202; Mixing valve 203; Fixing cutter holder 204; Spray cooling device 300; High-pressure rubber pipe 400; Nut 500; Parallels 600; Pressing plate 700; Stud 800; Strand basis 900.
Detailed description of the invention
The embodiment of the invention discloses a kind of gudgeon deep hole processing method for converter, it can avoid converter to disassemble by production line, making transformation for top-blown converter without the need to coordinating the converter overhaul time, being convenient to top-blown converter and transforming top and bottom combined blown converter as.The embodiment of the invention also discloses a kind of gudgeon deep hole drilling apparatus for converter, it is corresponding with above-mentioned processing method, can realize carrying out gudgeon deep hole machining to the converter on production line, be convenient to top-blown converter to be transformed into top and bottom combined blown converter.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1-Fig. 4, the gudgeon deep hole processing method for converter that the embodiment of the present invention provides comprises the steps:
Step 1: the rotary joint assembly removing trunnion end, the end face of cleaning gudgeon;
Step 2: the position marking hole to be processed on the end face of trunnion of converter, at the machining area of trunnion of converter, i.e. process equipment put area, installs strand basis 900;
Step 3: mechanical skid plateform is placed on above-mentioned strand basis 900, milling unit head is arranged on mechanical skid plateform, and depth drill is assemblied on the main shaft of milling unit head;
Step 4: according to step 2) in the height of position adjustment mechanical skid plateform of mark, then regulate the feeding linearity of above-mentioned depth drill;
Step 5: mechanical skid plateform is fixed on above-mentioned strand basis 900;
Step 6: utilize the milling unit head be arranged on mechanical skid plateform to treat machining hole and process.
The gudgeon deep hole processing method for converter that the embodiment of the present invention provides can avoid converter to pull down by production line, making transformation for top-blown converter without the need to coordinating the time of converter overhaul, can carry out at any time, being convenient to transform top-blown converter as top and bottom complex blowing stove.
In addition, the above-mentioned gudgeon deep hole processing method for converter avoids and converter is disassembled by production line, saves the time, decreases the workload of workman, and easy and simple to handle.
Concrete, in above-mentioned steps 3, first milling unit head can be arranged on mechanical skid plateform, then mechanical skid plateform be placed on strand basis 900, first mechanical skid plateform can also be placed on strand basis 900, then milling unit head be assemblied on above-mentioned mechanical skid plateform; In addition, depth drill is preferably set to refill after mechanical skid plateform and milling unit head have assembled be fitted on the main shaft of milling unit head.
Concrete, above-mentioned steps 4 is specially: between mechanical skid plateform and strand basis 900, arrange parallels 600 according to the position of mark in step 2, to adjust the height of mechanical skid plateform, make the height of depth drill consistent with the height of the position of above-mentioned mark, the contact of the dial gauge of 2 pieces of belt supporting frames is made to withstand top and the sidepiece of depth drill respectively, with the cylindrical of gudgeon for benchmark, low speed feeding mechanical skid plateform, judge that the axis of depth drill regulates the parallels 600 below the angle of mechanical skid plateform or mechanical skid plateform relative to the offset direction in hole to be processed and departure degree according to above-mentioned judged result according to the reading of dial gauge again, repeat above-mentioned steps until the axis of depth drill and the deviation in hole to be processed meet processing request, concrete, be 0 for the processing request of above-mentioned deviation in the present embodiment, namely the misalignment of axe bored at the feeding process medium-length hole of mechanical skid plateform is beated can complete position adjustments to mechanical skid plateform when being 0.
Concrete, above-mentioned steps 5 is specially: welding screw 800 on strand basis 900, adopts pressing plate 700 to push down mechanical skid plateform, makes stud 800 through the pilot hole on pressing plate 700 simultaneously, then on stud 800, arranges nut 500 and screw.
Concrete, above-mentioned steps 6 is specially: 61) feeding mechanical skid plateform, makes the fluted drill be assemblied on Milling Force head process pilot hole in marked locations; 62) exit fluted drill and dismantle, the first drill gun is installed, the mixing valve 203 communicated with above-mentioned first drill gun is connected with compressed air source with spray cooling device 300 respectively by pipeline; Check the fit clearance between the first drill gun and pilot hole, if above-mentioned fit clearance meets processing request, open milling unit head, spray cooling device 300 and compressed air source, regulate mixing valve 203 to convenient pressure feeding mechanical skid plateform to process pilot hole; Processing request for above-mentioned fit clearance is specially 0.005mm-0.0012mm; 63) above-mentioned steps 62 is repeated), the drill gun that replacing length is longer continues to treat machining hole and processes, until machine.Concrete, above-mentioned steps 63) can be set to repeat once according to processing needs, can also be set to repeatedly, if repeatedly, then the drill gun used in each process is all long than the length of the drill gun used in a front process.
Concrete, the depth drill be assemblied in above-mentioned steps 3 on the main shaft of milling unit head is drill gun, and it directly can pull down by the main shaft of milling unit head after step 4 completes, and can also pull down after step 5 completes by the main shaft of milling unit head; Carry out step 61) time first fluted drill need be installed; In addition, measure for the ease of dial gauge, the drill gun that length is longer preferentially selected by above-mentioned depth drill, and length specifically can be adopted to be the drill gun of 1200mm.Above-mentioned steps 61) in, the length of pilot hole should be not less than 1/3rd of the first drill gun length, preferred pilot hole should be set to that length is the first drill gun 1/2nd.Concrete, above-mentioned steps 63) for single repeats, the second drill gun namely only adopting length to be greater than the first drill gun is processed again, and its 3rd drill gun that length again can also be adopted to be greater than the second drill gun according to actual process requirements carries out third time processing; In the present embodiment, the length of the first drill gun is 600mm, and the length of the second drill gun is 900mm.
The embodiment of the present invention also provides a kind of gudgeon deep hole drilling apparatus for converter, and it comprises the strand basis 900 for being assemblied in machining area, is fixed on the mechanical skid plateform on above-mentioned strand basis 900; Be assemblied in the milling unit head on mechanical skid plateform; With the drill bit for being assemblied on milling unit head.
Concrete, above-mentioned drill bit comprises the fluted drill for processing pilot hole and the drill gun for deep hole processing; Above-mentioned gudgeon deep hole processing equipment also comprises the spray cooling device 300 for cooling drill gun, and it is connected with drill gun by the pipeline with mixing valve 203; Above-mentioned mixing valve 203 is also connected with compressed air source by pipeline; Concrete, the pressure of above-mentioned compressed air source is 0.6MPa.The above-mentioned pipeline be connected with compressed air source and the pipeline be connected with spray cooling device 300 are high-pressure rubber pipe 400.
Concrete, above-described embodiment provide in the gudgeon deep hole drilling apparatus of converter, the motor in mechanical skid plateform is the first variable-frequency motor 101, and above-mentioned mechanical skid plateform specifically comprises feed change case 102, slide unit 103, slide 104 and turn-screw.Above-mentioned first variable-frequency motor 101 is arranged on slide 104 end, and it drives screw turns, and then realizes push-and-pull slide 104.
Above-described embodiment provide in the gudgeon deep hole drilling apparatus of converter, drill bit is fixed on the main shaft of milling unit head by fixing cutter holder 204.Above-mentioned milling unit head comprises shaft transmission 201, motor and unit head, and wherein, motor is the second variable-frequency motor 202.
The gudgeon deep hole drilling apparatus for converter that the embodiment of the present invention provides is corresponding with the gudgeon deep hole processing method for converter that above-described embodiment provides, it can carry out gudgeon deep hole machining to the converter on production line, conveniently top-blown converter is transformed into top and bottom combined blown converter.
In addition, the gudgeon deep hole drilling apparatus volume for converter that the embodiment of the present invention provides is little, lightweight, convenient installation, and it is little to take up room.
Meanwhile, the gudgeon deep hole drilling apparatus structure for converter that the embodiment of the present invention provides is simple, be convenient to production and processing, and production cost is low.
Moreover other effect that its processing method also having above-described embodiment and provide of the gudgeon deep hole drilling apparatus for converter that the embodiment of the present invention provides possesses, does not repeat them here.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.For device disclosed in embodiment, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part illustrates see method part.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (3)
1., for a gudgeon deep hole processing method for converter, it is characterized in that, comprise the steps:
1) remove the rotary joint assembly of trunnion end, clear up the end face of described gudgeon;
2) mark the position in hole to be processed on the end surface, at machining area, strand basis is installed;
3) mechanical skid plateform is placed on described strand basis, milling unit head is arranged on described mechanical skid plateform, and depth drill is assemblied on the main shaft of described milling unit head;
4) according to described step 2) in the position of mark adjust the height of described mechanical skid plateform, and adjust the feeding linearity of described depth drill;
5) described mechanical skid plateform is fixed on described strand basis;
6) the described milling unit head be arranged on described mechanical skid plateform is utilized to process described hole to be processed;
Described step 6) for: 61) mechanical skid plateform described in feeding, makes the fluted drill processing pilot hole be assemblied on described milling unit head; 62) exit described fluted drill and dismantle, reinstalling the first drill gun, the mixing valve communicated with described first drill gun is connected with compressed air source with spray cooling device respectively by pipeline; Check the fit clearance between described first drill gun and described pilot hole, if above-mentioned fit clearance meets processing request, open described milling unit head, described spray cooling device and described compressed air source, regulate described mixing valve to convenient pressure and mechanical skid plateform described in feeding to process; 63) repeating said steps 62), the drill gun utilizing length longer continues processing, until complete processing.
2. gudgeon deep hole processing method according to claim 1, is characterized in that, described step 4) be specially: parallels is set between described mechanical skid plateform and described strand basis, to adjust the height of described mechanical skid plateform; The contact of the dial gauge of 2 pieces of belt supporting frames is made to withstand top and the sidepiece of described depth drill respectively, with the cylindrical of described gudgeon for benchmark, mechanical skid plateform described in low speed feeding, described mechanical skid plateform is adjusted again, until the deviation of the axis in the feeding axis of described depth drill and described hole to be processed meets processing request according to the measurement data of described dial gauge.
3. gudgeon deep hole processing method according to claim 1, it is characterized in that, described step 5) be: welding screw on described strand basis, makes pressing plate push down described mechanical skid plateform, and make described stud through the pilot hole of described pressing plate, then nut is set on described stud and screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310020413.1A CN103042243B (en) | 2013-01-18 | 2013-01-18 | Processing method and processing device for converter trunnion deep-hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310020413.1A CN103042243B (en) | 2013-01-18 | 2013-01-18 | Processing method and processing device for converter trunnion deep-hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103042243A CN103042243A (en) | 2013-04-17 |
| CN103042243B true CN103042243B (en) | 2015-05-13 |
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| CN201310020413.1A Expired - Fee Related CN103042243B (en) | 2013-01-18 | 2013-01-18 | Processing method and processing device for converter trunnion deep-hole |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103212702B (en) * | 2013-05-08 | 2015-11-04 | 重庆钢铁(集团)有限责任公司 | Ladle trunnion and utilize this ladle trunnion to carry out the method for ladle reparation |
| CN103451354A (en) * | 2013-08-29 | 2013-12-18 | 莱芜钢铁集团有限公司 | Method for installing bottom blowing device on top-blown converter in on-line way |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4428564A (en) * | 1982-01-26 | 1984-01-31 | Pennsylvania Engineering Corporation | Metallurgical vessel |
| DE3720837A1 (en) * | 1987-06-24 | 1987-10-15 | Wilhelm Conrads | Deep-hole drilling apparatus with continuously working, electrohydraulic centring device, controlled by laser light, for the working axis of the drilling head to prevent deflection in the elastic area |
| CN2432218Y (en) * | 2000-06-29 | 2001-05-30 | 本溪钢铁(集团)有限责任公司 | Converter trunnion hole-enlarging device |
| CN201094997Y (en) * | 2007-11-20 | 2008-08-06 | 鞍钢重型机械有限责任公司北部机械厂 | Converter trunnion on-site processing equipment |
| CN201841407U (en) * | 2010-05-26 | 2011-05-25 | 东方电气(广州)重型机器有限公司 | Movable large-aperture boring and milling machining device |
-
2013
- 2013-01-18 CN CN201310020413.1A patent/CN103042243B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4428564A (en) * | 1982-01-26 | 1984-01-31 | Pennsylvania Engineering Corporation | Metallurgical vessel |
| DE3720837A1 (en) * | 1987-06-24 | 1987-10-15 | Wilhelm Conrads | Deep-hole drilling apparatus with continuously working, electrohydraulic centring device, controlled by laser light, for the working axis of the drilling head to prevent deflection in the elastic area |
| CN2432218Y (en) * | 2000-06-29 | 2001-05-30 | 本溪钢铁(集团)有限责任公司 | Converter trunnion hole-enlarging device |
| CN201094997Y (en) * | 2007-11-20 | 2008-08-06 | 鞍钢重型机械有限责任公司北部机械厂 | Converter trunnion on-site processing equipment |
| CN201841407U (en) * | 2010-05-26 | 2011-05-25 | 东方电气(广州)重型机器有限公司 | Movable large-aperture boring and milling machining device |
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| CN103042243A (en) | 2013-04-17 |
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| CB03 | Change of inventor or designer information |
Inventor after: Du Shouhu Inventor after: Chen Guohua Inventor after: Zhang Ming Inventor after: Xing Dongfang Inventor after: Wu Qiang Inventor after: Wu Maocheng Inventor after: Zhang Ruihai Inventor after: Wang Jingzhi Inventor after: Zhu Chao Inventor after: Ding Hongzhou Inventor after: Jia Congjie Inventor before: Du Shouhu Inventor before: Zhang Ming Inventor before: Wu Qiang Inventor before: Wu Maocheng Inventor before: Zhang Ruihai Inventor before: Wang Jingzhi Inventor before: Zhu Chao Inventor before: Ding Hongzhou Inventor before: Jia Congjie Inventor before: Chen Guohua |
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Free format text: CORRECT: INVENTOR; FROM: DU SHOUHU WU QIANG WU MAOCHENG ZHANG RUIHAI WANG JINGZHI ZHU CHAO DING HONGZHOU JIA CONGJIE CHEN GUOHUA ZHANG MING TO: DU SHOUHU XING DONGFANG WU QIANG WU MAOCHENG ZHANG RUIHAI WANG JINGZHI ZHU CHAO DING HONGZHOU JIA CONGJIE CHEN GUOHUA ZHANG MING |
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Granted publication date: 20150513 |