CN104918344B - A kind of multilamellar induction coil and preparation method thereof - Google Patents
A kind of multilamellar induction coil and preparation method thereof Download PDFInfo
- Publication number
- CN104918344B CN104918344B CN201510320851.9A CN201510320851A CN104918344B CN 104918344 B CN104918344 B CN 104918344B CN 201510320851 A CN201510320851 A CN 201510320851A CN 104918344 B CN104918344 B CN 104918344B
- Authority
- CN
- China
- Prior art keywords
- induction coil
- multilamellar
- glass tape
- coil
- immersion coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000006698 induction Effects 0.000 title claims abstract description 84
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000011521 glass Substances 0.000 claims abstract description 31
- 239000003822 epoxy resin Substances 0.000 claims abstract description 29
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 29
- 238000009413 insulation Methods 0.000 claims abstract description 22
- 239000003973 paint Substances 0.000 claims abstract description 22
- 239000011248 coating agent Substances 0.000 claims abstract description 20
- 238000000576 coating method Methods 0.000 claims abstract description 20
- 238000007654 immersion Methods 0.000 claims abstract description 20
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 3
- 230000000712 assembly Effects 0.000 claims abstract 2
- 238000000429 assembly Methods 0.000 claims abstract 2
- 229910052802 copper Inorganic materials 0.000 claims description 19
- 239000010949 copper Substances 0.000 claims description 19
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 17
- 229910001369 Brass Inorganic materials 0.000 claims description 13
- 238000000137 annealing Methods 0.000 claims description 13
- 239000010951 brass Substances 0.000 claims description 13
- 238000007605 air drying Methods 0.000 claims description 10
- 238000005868 electrolysis reaction Methods 0.000 claims description 6
- 239000004593 Epoxy Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 238000010304 firing Methods 0.000 claims 2
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 claims 1
- 241000357293 Leptobrama muelleri Species 0.000 abstract description 12
- 229910000881 Cu alloy Inorganic materials 0.000 abstract description 11
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 229910052751 metal Inorganic materials 0.000 abstract description 9
- 239000002184 metal Substances 0.000 abstract description 9
- 230000008439 repair process Effects 0.000 abstract description 6
- 238000005275 alloying Methods 0.000 abstract description 3
- 238000005266 casting Methods 0.000 description 4
- 238000003618 dip coating Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000009418 renovation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 206010068052 Mosaicism Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- General Induction Heating (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention provides a kind of multilamellar induction coil and preparation method thereof, the multilamellar induction coil of the present invention includes induction coil assembly and connecting elements, induction coil assembly is made up of the epoxy resin board of socket inside induction coil and coil, the outer layer of induction coil and connecting elements is all tied with glass tape insulation paint immersion coating, and connecting elements connects with the interface of adjacent two induction coils respectively；Multiple induction coil assemblies are socketed formation multilamellar induction coil successively；Outermost layer at multilamellar induction coil is tied with glass tape insulation paint immersion coating.The present invention not only increases the efficiency of heating surface in the repair process of steel back of the body copper alloy dual-metal lining, shortens heat time heating time, and after making reparation, the alloying component of product meets technological requirement；And improve processing safety, it is ensured that the life security of operator.
Description
Technical field
The present invention relates to a kind of multilamellar induction coil and preparation method thereof, be specifically related to a kind of for steel back of the body copper alloy
The casting flaw of bimetal liner repairs multilamellar induction coil in operating mode and preparation method thereof.
Background technology
Steel back of the body copper alloy dual-metal lining, with the steel back of the body as carrier, can bear top load, again can be swollen with the line of pedestal
Coefficient keeps consistent；Meanwhile, steel back of the body copper alloy dual-metal lining is with excellent alloy copper sliding axletree material for lining
Layer, can form good friction pair with various quenching axles, have good mosaicism and running-in ability, when high speed
Oil-free lubrication state when having oil lubrication and low speed under all can effectively work.Steel back of the body copper alloy dual-metal lining
Quality directly affects the safety of locomotive, aircraft and automobile etc., belongs to one of key components and parts, does not permits
Permitted have casting flaw to produce, and casting flaw can not be repaired by techniques such as repair weldings, had the product of casting flaw
Product are the most all carried out and are scrapped process.
In the repair process of steel back of the body copper alloy dual-metal lining, it is possible to use induction heating apparatus, but if
Indiscriminately imitate the induction coil of the induction heating apparatus of routine, length heat time heating time of repair process, the efficiency of heating surface can be caused
Low, and the steel back of the body causes the iron atom quantity in alloy-layer many, easily with the atoms permeating time length in alloy-layer
Beyond the content allowing ferrum element to exist in alloy-layer, after ultimately resulting in reparation, product is wanted because alloying component does not reaches
Ask and scrap.Additionally, due to induction coil and the long close contact of operator, if the sense used
Answering coil safety coefficient not high enough, will badly influence the safety of operator, problem above will cause steel to be carried on the back
The failure of copper alloy dual-metal lining renovation technique, thus do not reach the working condition requirement of renovation technique.
Summary of the invention
In order to overcome existing induction coil to there is disadvantage mentioned above and deficiency in the application, it is an object of the invention to provide
A kind of multilamellar induction coil, is used for improving the efficiency of heating surface and processing safety, to meet steel back of the body copper alloy dual-metal
Requirement in lining renovation technique.It is a further object to provide the preparation side of a kind of multilamellar induction coil
Method.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of multilamellar induction coil, including induction coil assembly and connecting elements, induction coil assembly is by the line of induction
Inside circle and coil, the epoxy resin board of socket is constituted, and the outer layer of described induction coil and connecting elements is all tied with glass
Glass silk ribbon insulation paint immersion coating, described connecting elements connects the interface of adjacent two induction coils；Multiple lines of induction
Coil unit is socketed the described multilamellar induction coil of formation successively；Outermost layer at multilamellar induction coil is tied with glass tape
And insulation paint immersion coating.
Described glass tape and insullac use single or multiple lift；The thickness of described epoxy resin board be 1～
2mm。
The periphery of described multilamellar induction coil is also equipped with brass bolt and copper nut, and brass bolt is fixed with asphalt mixtures modified by epoxy resin
Fat plate.
Described brass bolt welds rows along the circumferencial direction of multilamellar induction coil at interval of 90 °；On described brass bolt
The thickness of fixing epoxy resin board is more than or equal to 3mm.
The method preparing above-mentioned a kind of multilamellar induction coil, concretely comprises the following steps:
1) anaerobic is electrolysed copper pipe to make annealing treatment, and according to dimensional requirement, by the anaerobic electrolysis after annealing
The copper pipe induction coil of the multiple different-diameter of coiling on mould respectively；
2) glass tape is twined the periphery of induction coil after annealing, then insulation paint immersion coating air-drying, or
First at the periphery insulation paint immersion coating of induction coil, being wound around glass tape again after air-drying, the repeatable operation of this process is many
Secondary；
3) first it is socketed one layer of epoxy resin board in the inner side of induction coil and forms induction coil assembly, then at epoxy
Inside resin plate, the next induction coil assembly of socket, forms described multilamellar induction coil；
4) glass tape is wound on the periphery of described multilamellar induction coil, and insulation paint immersion coating also air-dries, or
First at the periphery insulation paint immersion coating of multilamellar induction coil, it is wound around glass tape again after air-drying, the repeatable behaviour of this process
Make repeatedly；
5) connecting elements is prepared: on anaerobic electrolysis copper pipe, be wound around glass tape, then insulation paint immersion coating air-drying,
Or first insulation paint immersion coating, is wound around glass tape after air-drying again, and the repeatable operation of this process is repeatedly；Then by institute
State connecting elements to be connected on the interface of adjacent two induction coil.
The multilamellar induction coil that the present invention provides, not only increases the repair process of steel back of the body copper alloy dual-metal lining
In the efficiency of heating surface, shorten heat time heating time, after making reparation, the alloying component of product meets technological requirement；And
Improve processing safety, it is ensured that the life security of operator.Specifically, (1) epoxy resin board, absolutely
The good insulating such as edge paint and glass tape, it is ensured that the safety in operating process, and intensity is high, plays preferably
Supporting role；(2) use of connecting elements makes the preparation technology of multilamellar induction coil become simple from complexity,
Dimensional stability is more preferable, it also avoid the repeatedly annealing of induction coil；(3) induction coil is set to multilamellar,
Substantially increase the efficiency of heating surface, be effectively controlled the steel back of the body and the atoms permeating in copper alloy, it is ensured that product
Chemical composition, meets technological requirement.(4) additionally, the multilamellar induction coil of the present invention not only has structure letter
Advantage singly, easy to use, that work efficiency is high, and greatly reduce the throwing of steel back of the body copper alloy dual-metal lining
Money and use cost, have higher practical prospect.
Accompanying drawing explanation
Fig. 1 is the double-deck induction coil configuration schematic diagram in the embodiment of the present invention；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is the sectional view of connecting elements.
Wherein, 1-brass bolt, 2-outer coil, 3a-the first epoxy resin board, 3b-the second epoxy resin board,
3c-the 3rd epoxy resin board, 4-inner coil, 5-glass tape, 6-copper nut, 7-connecting elements, 8-insulate
Paint.
Detailed description of the invention
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, 2, the present embodiment uses double-deck induction coil, including inner coil 4, outer coil 2,
Connecting elements 7, brass bolt 1, copper nut 6, epoxy resin board, glass tape 5 and insullac 8.Interior layer line
The outer layer of circle 4, outer coil 2 and connecting elements 7 is all tied with glass tape 5 insulation paint immersion coating 8；Outer layer
The inside of coil 2 and inner coil 4 is socketed one layer of first epoxy resin board 3a and the second epoxy resin board respectively
3b, outer coil 2 is positioned at the outside of inner coil 4, and the outermost at outer coil 2 is tied with glass tape 5,
Then insulation paint immersion coating 8；Connecting elements 7 interface with inner coil 4 and outer coil 2 respectively is connected.
Wherein, the insullac 8 of the outer layer dip-coating of inner coil 4, outer coil 2 and connecting elements 7 and being tied with
Glass tape 5 be 2 layers, increase security performance.
The double-deck induction coil configuration of the present embodiment is one layer of first epoxy resin of socket in outer coil 2
Plate 3a, then in the first epoxy resin board 3a, it is socketed inner coil 4, finally on the basis of inner coil 4
It is socketed one layer of second epoxy resin board 3b；First epoxy resin board 3a and the thickness of the second epoxy resin board 3b
It is 1～2mm.
Weld row's brass bolt 1 in the periphery of double-deck induction coil every 90 ° of directions, brass bolt 1 is fixed with
3rd epoxy resin board 3c and copper nut 6, so can avoid the gap between single coil in induction coil
Excessive, so that double-deck induction coil configuration is preferably fixed, it is ensured that the dimensional stability of induction coil.
The thickness of the 3rd epoxy resin board 3c is more than or equal to 3mm.
Specifically comprising the following steps that of the preparation method of the double-deck induction coil of the present embodiment
The first step, anaerobic is electrolysed copper pipe carry out in electric furnace 680 DEG C insulation 30min annealing, and according to
Dimensional requirement, by the anaerobic electrolysis copper pipe inner coil of two different-diameters of coiling on mould respectively after annealing
4 and outer coil 2；
Second step, welds row's brass bolt 1 in the periphery of double-deck induction coil every 90 ° of directions, and at copper spiral shell
Fix the 3rd epoxy resin board 3c and the copper nut 6 of 5mm thickness on bolt 1, and carry out 630 DEG C of insulation 60min
Annealing；
3rd step, is wound on glass tape 5 on the copper pipe periphery of outer coil 2 and inner coil 4, leaching
It is coated with one layer of insullac 8 and air-dries；
4th step, is wound on glass tape 5 on the good inner coil of three step process 4 and outer coil 2；
One layer of insullac 8 of dip-coating also air-dries；
5th step, is first socketed the first thick asphalt mixtures modified by epoxy resin of one layer of 1mm in the outer coil 2 that the 4th step is handled well
Fat plate 3a, then in the first epoxy resin board 3a, it is socketed inner coil 4, finally on the basis of inner coil 4
It is socketed the thick second epoxy resin board 3b of one layer of 1mm, forms double-deck induction coil；
3 layers of glass tape are wound on the periphery of double-deck induction coil by the 6th step, and one layer of insullac 8 of dip-coating is also
Air-dry；
7th step, first prepares connecting elements 7: be wound with glass tape 5 on anaerobic electrolysis copper pipe and be brushed with
Insullac 8, repeatable operation is once (as shown in Figure 3)；Then the two ends of connecting elements 7 use fixed copper
Nut is connected on the interface of inner coil 4 and outer coil 2.
Claims (6)
1. the preparation method of a multilamellar induction coil, it is characterised in that described multilamellar induction coil includes sense
Answering coil unit and connecting elements, induction coil assembly is by the epoxy resin board of socket inside induction coil and coil
Constituting, the outer layer of described induction coil and connecting elements is all tied with glass tape insulation paint immersion coating, described connection
Component connects the interface of adjacent two induction coils；Multiple induction coil assemblies are socketed the described multilamellar sense of formation successively
Answer coil；Outermost layer at multilamellar induction coil is tied with glass tape insulation paint immersion coating；
Described preparation method comprises the following steps:
1) anaerobic is electrolysed copper pipe to make annealing treatment, and according to dimensional requirement, by the anaerobic electrolysis after annealing
The copper pipe induction coil of the multiple different-diameter of coiling on mould respectively；
2) glass tape is twined the periphery of induction coil after annealing, then insulation paint immersion coating air-drying, or
First at the periphery insulation paint immersion coating of induction coil, being wound around glass tape again after air-drying, the repeatable operation of this process is many
Secondary；
3) first it is socketed one layer of epoxy resin board in the inner side of induction coil and forms induction coil assembly, then at epoxy
Inside resin plate, the next induction coil assembly of socket, forms described multilamellar induction coil；
4) glass tape is wound on the periphery of described multilamellar induction coil, and insulation paint immersion coating also air-dries, or
First at the periphery insulation paint immersion coating of multilamellar induction coil, it is wound around glass tape again after air-drying, the repeatable behaviour of this process
Make repeatedly；
5) connecting elements is prepared: on anaerobic electrolysis copper pipe, be wound around glass tape, then insulation paint immersion coating air-drying,
Or first insulation paint immersion coating, is wound around glass tape after air-drying again, and the repeatable operation of this process is repeatedly；Then by institute
State connecting elements to be connected on the interface of adjacent two induction coil.
The preparation method of a kind of multilamellar induction coil the most as claimed in claim 1, it is characterised in that described
Glass tape and insullac use single or multiple lift.
The preparation method of a kind of multilamellar induction coil the most as claimed in claim 1, it is characterised in that described
Step 1) in the technique of annealing be with the firing rate of no more than 60 DEG C/min be heated to 620～
680 DEG C, and it is incubated 30～60min.
The preparation method of a kind of multilamellar induction coil the most as claimed in claim 1, it is characterised in that described
Step 3) in, the thickness of epoxy resin board is 1～2mm.
The preparation method of a kind of multilamellar induction coil the most as claimed in claim 1, it is characterised in that described
The periphery of multilamellar induction coil is also equipped with brass bolt and copper nut, and brass bolt is fixed with epoxy resin board, and
Make annealing treatment.
The preparation method of a kind of multilamellar induction coil the most as claimed in claim 5, it is characterised in that described
Brass bolt arranges a row along the circumferencial direction of multilamellar induction coil at interval of 90 °；Ring fixing on described brass bolt
The thickness of epoxy resins plate is more than or equal to 3mm；The technique of described annealing is with no more than 60 DEG C/min
Firing rate is heated to 600～630 DEG C, and is incubated 30～60min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510320851.9A CN104918344B (en) | 2015-06-11 | 2015-06-11 | A kind of multilamellar induction coil and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510320851.9A CN104918344B (en) | 2015-06-11 | 2015-06-11 | A kind of multilamellar induction coil and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104918344A CN104918344A (en) | 2015-09-16 |
| CN104918344B true CN104918344B (en) | 2016-08-24 |
Family
ID=54086928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510320851.9A Active CN104918344B (en) | 2015-06-11 | 2015-06-11 | A kind of multilamellar induction coil and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104918344B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106455176B (en) * | 2016-07-12 | 2019-04-19 | 西安博大电炉有限公司 | A kind of inductor, inductor induction coil and its manufacturing method |
| CN106658800A (en) * | 2016-11-28 | 2017-05-10 | 江西江钨稀有金属新材料股份有限公司 | Induction coil heating device and manufacturing method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1342426A (en) * | 1970-06-05 | 1974-01-03 | Asea Ab | Insulated electrical conductor |
| EP0467309A1 (en) * | 1990-07-16 | 1992-01-22 | Tokushu Kogyo Kabushiki Kaisha | Joint sleeve and tube fitting |
| CN101505556A (en) * | 2009-03-13 | 2009-08-12 | 深圳市恒拓科技有限公司 | Heating coil, induction heating equipment and manufacturing method for heating coil |
| CN103295775A (en) * | 2012-06-18 | 2013-09-11 | 浙江康盛股份有限公司 | Insulation method of induction coil |
| CN204305382U (en) * | 2014-11-26 | 2015-04-29 | 埃博普感应系统（上海）有限公司 | A kind of modified electric induction furnace induction coil |
| CN204721644U (en) * | 2015-06-11 | 2015-10-21 | 南车戚墅堰机车车辆工艺研究所有限公司 | A kind of multilayer induction coil |
-
2015
- 2015-06-11 CN CN201510320851.9A patent/CN104918344B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1342426A (en) * | 1970-06-05 | 1974-01-03 | Asea Ab | Insulated electrical conductor |
| EP0467309A1 (en) * | 1990-07-16 | 1992-01-22 | Tokushu Kogyo Kabushiki Kaisha | Joint sleeve and tube fitting |
| CN101505556A (en) * | 2009-03-13 | 2009-08-12 | 深圳市恒拓科技有限公司 | Heating coil, induction heating equipment and manufacturing method for heating coil |
| CN103295775A (en) * | 2012-06-18 | 2013-09-11 | 浙江康盛股份有限公司 | Insulation method of induction coil |
| CN204305382U (en) * | 2014-11-26 | 2015-04-29 | 埃博普感应系统（上海）有限公司 | A kind of modified electric induction furnace induction coil |
| CN204721644U (en) * | 2015-06-11 | 2015-10-21 | 南车戚墅堰机车车辆工艺研究所有限公司 | A kind of multilayer induction coil |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104918344A (en) | 2015-09-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104918344B (en) | A kind of multilamellar induction coil and preparation method thereof | |
| CN111627618B (en) | Production and processing technology of enameled wire for automobile oil-cooled driving motor | |
| CN107293396B (en) | A kind of production technology of oil-immersed transformer | |
| CN201473564U (en) | Electromagnetic induction heating device | |
| CN105238909A (en) | Heating quenching inductor with different heat distributions | |
| CN103484609B (en) | A kind of 45# steel quenching method | |
| CN105469900A (en) | Processing method of copper clad aluminum conductor | |
| CN106057384B (en) | Compound insulation tube and its preparation method and application | |
| CN205223290U (en) | Heating quenching inductor with different heat distribution | |
| CN204721644U (en) | A kind of multilayer induction coil | |
| CN107453516B (en) | The manufacture of wind-driven generator SMC insulated end cover | |
| CN206794979U (en) | A kind of high-frequency gas protects soldering oven | |
| CN204714862U (en) | Portable induction heating device | |
| CN103971800A (en) | Winding wire of high-temperature-resistance electromagnetic coil and manufacturing method of winding wire | |
| CN204046851U (en) | A kind of Novel heating watt | |
| CN204504678U (en) | A kind of hot charging equipment for welded cathode roller elastic conjunction | |
| CN104099542A (en) | Aluminum alloy heavy heat treatment method | |
| CN106925858A (en) | A kind of high-frequency gas protect soldering oven and its method of work | |
| CN206527238U (en) | A kind of three-dimensional nonstorage calorifier of hot press-formed blank | |
| CN106493518B (en) | Steel alloy circle quenching roller production technology used in galvanized wire | |
| CN102888577A (en) | Process for manufacturing zinc, magnesium and aluminum ternary alloy steel pipe by continuously hot-dip plating | |
| CN103079302A (en) | Method for quickly solving problems of electric leakage and ignition of induction coil of induction heating furnace | |
| CN202584772U (en) | Nylon composite polyester enameled wire | |
| CN104043802A (en) | Mould and method for manufacturing bimetal plain thrust sliding bearing blank and manufacturing method thereof | |
| CN217693755U (en) | Insulated induction coil for intermediate frequency furnace |
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 | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 213011 Wuyi Road, Jiangsu, Changzhou, No. 258 Patentee after: CRRC QISHUYAN INSTITUTE Co.,Ltd. Address before: 213011 Wuyi Road, Qishuyan District, Jiangsu, China, No. 258, No. Patentee before: CSR QISHUYAN INSTITUTE Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 213011 258 Wuyi Road, Changzhou, Jiangsu Patentee after: CRRC Qishuyan Locomotive and Rolling Stock Technology Research Institute Co.,Ltd. Country or region after: China Address before: 213011 258 Wuyi Road, Changzhou, Jiangsu Patentee before: CRRC QISHUYAN INSTITUTE Co.,Ltd. Country or region before: China |