CN108372223A - A kind of spin forming method of Thin Walled Curved busbar shape part - Google Patents
A kind of spin forming method of Thin Walled Curved busbar shape part Download PDFInfo
- Publication number
- CN108372223A CN108372223A CN201611193611.8A CN201611193611A CN108372223A CN 108372223 A CN108372223 A CN 108372223A CN 201611193611 A CN201611193611 A CN 201611193611A CN 108372223 A CN108372223 A CN 108372223A
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- spinning
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- thin walled
- shape part
- mold
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000009987 spinning Methods 0.000 claims abstract description 91
- 238000007599 discharging Methods 0.000 claims abstract description 17
- 238000003825 pressing Methods 0.000 claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 claims abstract description 15
- 238000009740 moulding (composite fabrication) Methods 0.000 claims description 41
- 239000000463 material Substances 0.000 claims description 14
- 239000002828 fuel tank Substances 0.000 claims description 10
- 238000005096 rolling process Methods 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 abstract description 9
- 230000009467 reduction Effects 0.000 abstract description 4
- 230000004888 barrier function Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 7
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005242 forging Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 210000003739 neck Anatomy 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/14—Spinning
Abstract
The present invention relates to a kind of spin forming methods of Thin Walled Curved busbar shape part, the manufacturing process is using thick walled cylinder parts as blank, after backhaul spinning and sectional forming, it pushes part to move forward using two spinning roller synchro-feeds and is detached from spinning mold realization discharging, realize a mould pressing of Thin Walled Curved busbar shape part, reduce number of molds, reduce mould pressing number, reduce labor intensity, to reach reduction processing cost, shorten the production cycle, improve production efficiency, improve the purpose of part forming precision, also solves the technical barrier of Thin Walled Curved busbar shape part discharging hardly possible simultaneously.
Description
Technical field
The present invention relates to a kind of metal forming methods, and in particular to a kind of forming side of Thin Walled Curved busbar shape part
Method belongs to metal forming technical field.
Background technology
Thin Walled Curved busbar shape part is the continually changing cone cylinder of semi-cone angle, in industrial production especially in necks such as aerospaces
Domain has a wide range of applications, such as auxiliary tank of aircraft, hood, missile guidance cabin, Large Launch Vehicle engine jet pipe.With
The development of aerospace field, the demand to equipments such as Large Launch Vehicle, long-range missile, large capacity auxiliary fuel tanks are increasingly urgent to,
It is more and more closer to the research for processing Thin Walled Curved busbar shape part process method.
The forming technology of Thin Walled Curved busbar shape part is generally mould pressing, coiling welded, hydroforming, explosive forming, rubber
The soft modes such as swollen type（Half module）Flexible forming process.Spin forming technique is that one kind combining forging, stretching, bending, rolling and rolling
Few advanced manufacturing technology without machining of the process characteristics such as pressure is stressed on core model by the feed motion of spinning roller along same
The metal blank of one axis rotation, makes it generate continuous local plastic deformation and become required hollow revolving body workpiece.Phase
Than forming technologies such as hydroformings, spinning forming process has outstanding feature：The part of monolithic molding, forming does not have weld seam；Have
Effect improves the intensity, hardness, anti-fatigue performance of part；Belong to without machining, saves material；The precision of formation of parts is high；It can add
Muscle or change wall thickness part in work band.
It is typically using slab as blank, by multi-pass to use the process of the Thin Walled Curved busbar shape part of mould pressing
Shear spinning auxiliary shapes to obtain required type surface parts with conventional spinning.Use heavy-gauge sheeting female for the Thin Walled Curved of blank mould pressing
There are the following problems for linear part：
（1）Blank diameter is more than part maximum gauge, and processing part size is by existing working ability（The diameter of maximum blank and
Thickness）Limitation；
（2）Wall thickness, the cone angle of every time spinning have a strict requirements, and error cannot be too big, otherwise can give subsequent handling or even most
Finished product, which is brought, to be seriously affected；
（3）Part semi-cone angle is small, unloading difficulties after material pad pasting.
（4）Multi-pass spinning shapes, and needs to be made annealing treatment between every time, the process-cycle is longer；
（5）For workpiece through repeatedly handling, installation position error is big, influences workpiece size precision；
（6）Number of molds is more, of high cost；
（7）Bent busbar shape part semi-cone angle variation range and the corresponding limit semi-cone angle of limit attenuating rate of part material are parts
Two Main Basiss of spinning forming process design, part semi-cone angle variation range or material limits semi-cone angle are bigger, are spun into
Shear spinning number needed for during shape is more, and process is more complicated.
Invention content
For shortcoming existing for the process using heavy-gauge sheeting mould pressing Thin Walled Curved busbar shape part, the present invention
It proposes a kind of manufacturing process of Thin Walled Curved busbar shape part, realizes a mould pressing of Thin Walled Curved busbar shape part, reduce mould
Have quantity, reduce mould pressing number, reduce labor intensity, to reach reduction processing cost, shortens the production cycle, carry
High efficiency, improves the purpose of part forming precision, while the technology for also solving Thin Walled Curved busbar shape part discharging hardly possible is difficult
Topic.
In order to solve the above technical problems, the present invention is realized by following scheme：
A kind of spin forming method of Thin Walled Curved busbar shape part, it is characterised in that：The manufacturing process is using thick walled cylinder parts as hair
Base, a mould pressing after the completion of spinning, push workpiece to demould dischargings, specifically include following step using two spinning：
（1）The installation of blank
According to constancy of volume principle, thick walled cylinder parts blank dimension is calculated in conjunction with preform Thin Walled Curved busbar shape accessory size, it is thick
Wall cylindrical member blank internal diameter is slightly larger than spinning mold outside diameter, it is ensured that and blank can smoothly be loaded in place on spinning mold,
Blank and spinning mold big end are fixed together by screw, prevent blank in spinning process from occurring to slide relatively with spinning mold
It is dynamic；
（2）Backhaul spinning
Using the forming mode of backhaul spinning from big end to the gradual mould pressing of small end, two spinning roller synchro-feeds, shear spinning with
Conventional spinning is combined, and blank had not only occurred thickness change but also change in shape occurs；
（3）Sectional forming
After backhaul spinning, blank is divided by several sections of formings paragraph by paragraph according to accessory size, every section is thinned paragraph by paragraph；
（4）Discharging
After the completion of sectional forming, trip bolt is removed, pushes workpiece to be detached from spinning mold using two spinning roller synchro-feeds and realizes
Discharging.
Wherein the design of spinning mold is roughly the same with the final passage spinning mold of plank spinning, working portion of die shape
It is essentially identical with shape in part, the rebound of part wall thickness and diameter harmomegathus are taken into account, increases technique on the basis of part nominal size
Surplus.
In a preferred technical solution, the thick walled cylinder parts use looping mill rolling cylindrical member, i.e. looping mill rolling to go out tubular blank,
The blank of spinning is machined into after annealing.
In a preferred technical solution, the Thin Walled Curved busbar shape part can be auxiliary fuel tank part, and material is
5A06。
In a preferred technical solution, the spinning is using heavy double rotary wheel numerical control strong spinning machine.
To reduce lathe load, mitigate the weight of entire mold, mold uses hollow design, wall thickness 80mm-100mm.For
Ensure can there is good concentricity, mold big end to design certain length straight section with mold after tubular blank is installed on mold.
Cylindrical member and mold are fixed by the way of screw connection, the factors such as allowance and spinning roller width are considered, in distance
6 M16 threaded holes are evenly distributed at a certain distance from theoretical cutting line.
When rapidoprint is the auxiliary fuel tank part of 5A06 aluminium alloys, the strength of materials is relatively low, whole to mold in spinning process
Body intensity requirement is relatively low, and mold can be obtained by being machined after casting, without forging or quenching.
It spinning roller can be used to push annular device for discharging that part is driven to move forward and realize discharging.Discharge ring internal diameter is slightly larger than mould
Have straight section outer diameter, and there is good guidance quality.
The technique effect of the present invention is as follows：
A kind of manufacturing process of Thin Walled Curved busbar shape part provided by the invention realizes a spinning of Thin Walled Curved busbar shape part
Forming and slab multi-pass spinning forming technology（Repeatedly it is loaded）It compares, with mould pressing of tubular blank（Once it is loaded）
The process of Thin Walled Curved busbar shape part has the advantage that：
（1）A spinning mold only need to be processed, mold processing cost substantially reduces, die manufacturing cycle is short.Especially ground in product
Stage processed, high degree reduce preliminary preparation, reduce development cost, shorten the lead time；
（2）Mould pressing, processing cost is low, and Product Precision is high, and product qualification rate significantly improves；
（3）It after the completion of spinning, pushes workpiece to demould discharging using two spinning, solves Thin Walled Curved busbar shape part discharging hardly possible
Technical barrier；
（4）Number of molds is reduced, mould pressing number is reduced, reduces labor intensity, to reach reduction processing cost, contracting
Short production cycle improves production efficiency, improves the purpose of part forming precision, has positive realistic meaning and economic benefit.
Description of the drawings
Fig. 1 is the blank scheme of installation in the forming of Thin Walled Curved busbar shape part；
Fig. 2 is the backhaul spinning schematic diagram in the forming of Thin Walled Curved busbar shape part；
Fig. 3 is the discharging schematic diagram in the forming of Thin Walled Curved busbar shape part；
Fig. 4 is the blank schematic diagram in the forming of certain type auxiliary fuel tank part；
Fig. 5 is the schematic diagram of certain type auxiliary fuel tank part after forming；
In figure：1- tails top, 2- spinning molds, 3- blanks, 4- spinning rollers, 5- trip bolts, 6- main shafts.
Specific implementation mode
The manufacturing process of the Thin Walled Curved busbar shape part of the present invention is further elaborated with reference to specific embodiment, but
The protection content of the present invention is not limited to following embodiment.
Thin Walled Curved busbar shape parts information model type auxiliary fuel tank part, with looping mill rolling tubular blank mould pressing type auxiliary fuel tank zero
Part.It elaborates respectively to each section below.
（1）Part material：
Auxiliary fuel tank part material is 5A06, which is not heat-treatable strengthened aluminum alloy, can only improve material by processing hardening
Expect mechanical property.Material processing hardening is serious, needs to be heated in spinning process.The technique is suitble to the aluminium alloy of all trades mark,
Reference function is formed with to other materials such as carbon steels.Blank is as shown in Figure 5.
（2）The spinning machine of use：
Spinning technology experiment is carried out on the heavy double rotary wheel numerical control strong spinning machine that I is developed.The main skill of this spinning machine
Art parameter is as follows：
Longitudinal spinning force（Each spinning roller）：500kN
Lateral spinning force：400kN
Maximum flow formed part diameter：1400mm
Rotary wheel base longitudinal stroke：3000mm
Rotary wheel base infeed stroke：425mm
The speed of mainshaft：10~100r/min
Spindle power：355kw
Process part specifications：
（3）Spinning mold
To reduce lathe load, mitigate the weight of entire mold, mold uses hollow design, wall thickness 80mm-100mm.To ensure
Tubular blank can have good concentricity, mold big end to design certain length straight section with mold after being installed on mold.Using
The mode of screw connection fixes looping mill rolling cylindrical member with mold, the factors such as allowance and spinning roller width is considered, in distance
6 M16 threaded holes are evenly distributed at a certain distance from theoretical cutting line.Part material is 5A06 aluminium alloys, and the strength of materials is relatively low,
Relatively low to the requirement of mold integral strength in spinning process, mold can be obtained by being machined after casting, without forging or quenching.
Discharge ring internal diameter is slightly larger than mold straight section outer diameter, and has good guidance quality.
（4）Technological process
Certain type auxiliary fuel tank cylinder part is that typical large-scale bent busbar shape part is once spun into using looping mill rolling cylindrical member as blank
Shape, using the forming mode of backhaul spinning, shear spinning is combined with conventional spinning when spinning, after the completion of spinning, utilizes two
Spinning pushes workpiece to demould discharging, and technological process is as follows：
（1）The installation of blank
According to constancy of volume principle, blank dimension, thick walled cylinder parts hair are calculated in conjunction with preform Thin Walled Curved busbar shape accessory size
Base internal diameter is slightly larger than spinning mold outside diameter, it is ensured that blank can smoothly be loaded in place on spinning mold, will by screw
Blank is fixed together with spinning mold big end, prevents blank in spinning process from opposite sliding occurs with spinning mold；
（2）Backhaul spinning
Using the forming mode of backhaul spinning from big end to the gradual mould pressing of small end, two spinning roller synchro-feeds, shear spinning with
Conventional spinning is combined, and blank had not only occurred thickness change but also change in shape occurs；
（3）Sectional forming
After backhaul spinning, blank is divided by several sections of formings paragraph by paragraph according to accessory size, every section is thinned paragraph by paragraph；
（4）Discharging
After the completion of sectional forming, trip bolt is removed, pushes workpiece to be detached from spinning mold using two spinning roller synchro-feeds and realizes
Discharging.
（5）- trimming-detection is detected to the part after forming.
The part has been produced in batches, process stabilizing, and it is with obvious effects to save manufacturing cycle reduction manufacturing cost.
Claims (5)
1. a kind of spin forming method of Thin Walled Curved busbar shape part, it is characterised in that：The manufacturing process is with thick walled cylinder parts
Blank, a mould pressing after the completion of spinning, push workpiece to demould dischargings, specifically include following step using two spinning：
（1）The installation of blank
According to constancy of volume principle, thick walled cylinder parts blank dimension is calculated in conjunction with preform Thin Walled Curved busbar shape accessory size, it is thick
Wall cylindrical member blank internal diameter is slightly larger than spinning mold outside diameter, it is ensured that and blank can smoothly be loaded in place on spinning mold,
Blank and spinning mold big end are fixed together by screw, prevent blank in spinning process from occurring to slide relatively with spinning mold
It is dynamic；
（2）Backhaul spinning
Using the forming mode of backhaul spinning from big end to the gradual mould pressing of small end, two spinning roller synchro-feeds, shear spinning with
Conventional spinning is combined, and blank had not only occurred thickness change but also change in shape occurs；
（3）Sectional forming
After backhaul spinning, blank is divided by several sections of formings paragraph by paragraph according to accessory size, every section is thinned paragraph by paragraph；
（4）Discharging
After the completion of sectional forming, trip bolt is removed, pushes part to move forward using two spinning roller synchro-feeds and is detached from spinning
Mold realizes discharging.
2. the spin forming method of Thin Walled Curved busbar shape part according to claim 1, which is characterized in that the thick cylinder
Shape part is looping mill rolling cylindrical member.
3. the spin forming method of Thin Walled Curved busbar shape part according to claim 1, which is characterized in that the Thin Walled Curved
Busbar shape part is auxiliary fuel tank part, material 5A06.
4. the spin forming method of Thin Walled Curved busbar shape part according to claim 1, which is characterized in that the spinning block
Tool uses hollow design, wall thickness 80mm-100mm to mitigate the weight of entire mold to reduce lathe load.
5. the spin forming method of Thin Walled Curved busbar shape part according to claim 1, which is characterized in that the spinning is adopted
With heavy double rotary wheel numerical control strong spinning machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611193611.8A CN108372223B (en) | 2016-12-21 | 2016-12-21 | Spinning forming method of thin-wall curved bus-shaped part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611193611.8A CN108372223B (en) | 2016-12-21 | 2016-12-21 | Spinning forming method of thin-wall curved bus-shaped part |
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| Publication Number | Publication Date |
|---|---|
| CN108372223A true CN108372223A (en) | 2018-08-07 |
| CN108372223B CN108372223B (en) | 2020-05-19 |
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|---|---|---|---|
| CN201611193611.8A Active CN108372223B (en) | 2016-12-21 | 2016-12-21 | Spinning forming method of thin-wall curved bus-shaped part |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109622712A (en) * | 2018-12-05 | 2019-04-16 | 北京蓝箭空间科技有限公司 | A kind of thrust chamber forming method for rocket engine |
| CN111151630A (en) * | 2019-12-04 | 2020-05-15 | 中国工程物理研究院机械制造工艺研究所 | Forming method of straight flange conical part |
| CN113426873A (en) * | 2021-06-25 | 2021-09-24 | 吉林大学 | Spinning forming device and method with bionic drag reduction surface fairing |
| CN114192647A (en) * | 2021-12-13 | 2022-03-18 | 西北工业大学 | Shearing forming method for annular outer rib cylindrical part |
| CN115740964A (en) * | 2022-10-10 | 2023-03-07 | 中国兵器科学研究院宁波分院 | Manufacturing method of large-size thin-wall curved bus 5A06 aluminum alloy shell |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS551976A (en) * | 1978-09-27 | 1980-01-09 | Kobe Steel Ltd | Spinning method |
| CN102078895A (en) * | 2010-11-11 | 2011-06-01 | 西北工业大学 | Method for forming large complex thin-wall shell with circumferential inner ribs |
| CN102310133A (en) * | 2010-06-30 | 2012-01-11 | 哈尔滨建成集团有限公司 | Heat spinning thinning forming method for 5A06 aluminum alloy thick wall cylindrical part |
| CN104028607A (en) * | 2014-06-06 | 2014-09-10 | 中国航天科技集团公司长征机械厂 | Machining method for improving finish product quality of spinning thickness-reduced pipe |
| CN104438536A (en) * | 2014-12-09 | 2015-03-25 | 太原理工大学 | Ultrasound spinning forming technique for magnesium alloy cylinders |
| CN105537449A (en) * | 2016-01-26 | 2016-05-04 | 湖北三江航天江北机械工程有限公司 | Spinning machining method for aluminium alloy thin-walled revolution body |
-
2016
- 2016-12-21 CN CN201611193611.8A patent/CN108372223B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS551976A (en) * | 1978-09-27 | 1980-01-09 | Kobe Steel Ltd | Spinning method |
| CN102310133A (en) * | 2010-06-30 | 2012-01-11 | 哈尔滨建成集团有限公司 | Heat spinning thinning forming method for 5A06 aluminum alloy thick wall cylindrical part |
| CN102078895A (en) * | 2010-11-11 | 2011-06-01 | 西北工业大学 | Method for forming large complex thin-wall shell with circumferential inner ribs |
| CN104028607A (en) * | 2014-06-06 | 2014-09-10 | 中国航天科技集团公司长征机械厂 | Machining method for improving finish product quality of spinning thickness-reduced pipe |
| CN104438536A (en) * | 2014-12-09 | 2015-03-25 | 太原理工大学 | Ultrasound spinning forming technique for magnesium alloy cylinders |
| CN105537449A (en) * | 2016-01-26 | 2016-05-04 | 湖北三江航天江北机械工程有限公司 | Spinning machining method for aluminium alloy thin-walled revolution body |
Non-Patent Citations (1)
| Title |
|---|
| 陈辉: "复杂曲面_薄壁件精密旋压成形技术研究", 《中国优秀博硕士学位论文全文数据库（硕士）工程科技I辑》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109622712A (en) * | 2018-12-05 | 2019-04-16 | 北京蓝箭空间科技有限公司 | A kind of thrust chamber forming method for rocket engine |
| CN111151630A (en) * | 2019-12-04 | 2020-05-15 | 中国工程物理研究院机械制造工艺研究所 | Forming method of straight flange conical part |
| CN111151630B (en) * | 2019-12-04 | 2021-07-20 | 中国工程物理研究院机械制造工艺研究所 | Forming method of straight flange conical part |
| CN113426873A (en) * | 2021-06-25 | 2021-09-24 | 吉林大学 | Spinning forming device and method with bionic drag reduction surface fairing |
| CN113426873B (en) * | 2021-06-25 | 2022-04-29 | 吉林大学 | Spinning forming device and method with bionic drag reduction surface fairing |
| CN114192647A (en) * | 2021-12-13 | 2022-03-18 | 西北工业大学 | Shearing forming method for annular outer rib cylindrical part |
| CN114192647B (en) * | 2021-12-13 | 2024-04-02 | 西北工业大学 | Shearing forming method for annular outer rib cylindrical part |
| CN115740964A (en) * | 2022-10-10 | 2023-03-07 | 中国兵器科学研究院宁波分院 | Manufacturing method of large-size thin-wall curved bus 5A06 aluminum alloy shell |
| CN115740964B (en) * | 2022-10-10 | 2023-09-15 | 中国兵器科学研究院宁波分院 | Manufacturing method of large-size thin-wall curved bus 5A06 aluminum alloy shell |
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|---|---|
| CN108372223B (en) | 2020-05-19 |
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Effective date of registration: 20240122 Address after: 264006 No. 18-1 Shuhe Road, Yantai Economic and Technological Development Zone, Shandong Province Patentee after: YANTAI CONGLIN PRECISION MACHINERY Co.,Ltd. Guo jiahuodiqu after: Zhong Guo Address before: 100024 Beijing city Chaoyang District eight Bridge North East Junzhuang No. 1 Patentee before: AVIC BEIJING AERONAUTICAL MANUFACTURING TECHNOLOGY Research Institute Guo jiahuodiqu before: Zhong Guo |
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