CN102728756A - Wind power spindle flange upsetting process - Google Patents
Wind power spindle flange upsetting process Download PDFInfo
- Publication number
- CN102728756A CN102728756A CN2012102139876A CN201210213987A CN102728756A CN 102728756 A CN102728756 A CN 102728756A CN 2012102139876 A CN2012102139876 A CN 2012102139876A CN 201210213987 A CN201210213987 A CN 201210213987A CN 102728756 A CN102728756 A CN 102728756A
- Authority
- CN
- China
- Prior art keywords
- jumping
- forging
- time
- wind power
- rotary table
- 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
Abstract
The invention discloses a wind power spindle flange upsetting process, which comprises the following steps of: performing a first upsetting sate by a rotating local upsetting process, and by combining an overturning process; and arranging a loop on the excircle of the forging and continuing to perform a second upsetting stage process. When the process is used, forging cost and labor intensity are reduced, and the nonuniformity of deformation is relieved.
Description
Technical field
Technical field of wind power generator of the present invention particularly relates to a kind of wind power principal axis flange jumping-up technology.
Background technology
Current society, along with problems such as global energy shortage and environmental pollution are increasingly serious, seeking regenerative resource has become the key subjects that countries in the world face.And the nature wind energy is compared with other energy; Not only reserves are big, distribute extensively, and are never exhausted; But also have last detective, construction period weak point, stronger than basic less investment, the flexibility of the construction of hydropower stations; And can effectively contain greenhouse effects and sandstorm disaster, characteristics such as environmental protection, so wind-power electricity generation becomes the emphasis of research day by day.
Flange of wind power generation tower barrel (hereinafter is referred to as wind power flange) is crucial connector, support member and the stressed member of wind-power tower; Wind power flange has very high requirement to quality; This mainly is because wind power equipment need be worked in the open air; Stand various extremely atrocious weather environment, therefore, wind power flange must satisfy the performance of high strength, high tenacity, low-temperature impact resistance.And in wind power equipment; Wind power flange all has very big diameter, and generally all between 1050～1600mm, axle body length is between 2400～4000mm for its diameter; They forge on hydraulic press all has technological difficulties, and that is exactly the wind power flange that how to forge jumping-up wind power principal axis end.At present, large-scale wind electricity main-axis end wind power flange jumping-up is to adopt traditional forging method to carry out, and this method that forges can cause when jumping-up, producing the uneven problem of distortion.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of jumping-up technology that can improve the wind electricity main-axis end wind power flange of deformation uniformity is provided.
The jumping-up technology of wind power flange of the present invention comprises the steps:
1. the preparation of wind power flange steel billet; Be warming up to 1300 ℃ at converter; Add steelmaking feed to be refined into the Hi-Stren steel blank that is used for wind power flange; Wherein the chemical composition of Hi-Stren steel is: carbon: 0.25～0.60wt%, silicon: 0.35～0.50wt%, manganese: 1.2～1.70wt%, phosphorus: 0.015～0.025wt%, sulphur: 0.012～0.02wt%, chromium: 0.30～0.80wt%, molybdenum: 0.10～0.30, vanadium: 0.15～0.30wt%, nickel: 0.30～0.50wt%, copper: 0.15～0.3wt%, nitrogen: 0.015～0.05wt%, titanium :≤0.2wt%, niobium :≤0.06wt%, and surplus is an iron; Then said Hi-Stren steel blank continuous casting is become Φ 1500mm blank, said blank obtains being used for the forging of wind power flange after forging;
2. first jumping-up stage of forging; This first jumping-up stage for repeatedly replace the first time jumping-up with the jumping-up second time: hang in the vertical wind power principal axis flange forging of holding up among the jumping-up equipment that constitutes by heading die and rotary table with suspender; Forging is fixed on the rotary table, adopts hydraulic press forging to be carried out said first time of the jumping-up in the first jumping-up stage; Its process is: earlier the part of forging is carried out jumping-up; After this part jumping-up finishes; With the rotary table rotation, then the other part of forging is carried out jumping-up, so constantly jumping-up rotation; Till jumping-up is all accomplished in the whole surface of forging, guarantee forging is upset as circle with this; The jumping-up second time in the first jumping-up stage; Forging on the rotary table is sling by suspender; After turning over turnback, be fixed on rotary table once more; Same adopt hydraulic press the forging of jumping-up carry out jumping-up second time to accomplishing for the first time, said second time jumping-up process with the first time jumping-up process identical; Repeat the jumping-up and the technology of jumping-up for the first time for the second time, till the height of said forging by jumping-up is half of this forging original height;
3. the collar adds the overcoat of a carbon steel in the outer ring of the forging of completing steps 2;
4. second jumping-up stage of forging, this second jumping-up stage for repeatedly replace the first time jumping-up with jumping-up for the second time: adopt hydraulic press forging to be carried out said first time of the jumping-up in the second jumping-up stage; Its process is: earlier the part of forging is carried out jumping-up, after this part jumping-up finishes, with the rotary table rotation, then the other part of forging is carried out jumping-up, so constantly jumping-up rotation is till jumping-up is all accomplished in the whole surface of forging; Jumping-up for the second time; Forging on the rotary table is sling by suspender; After turning over turnback, be fixed on rotary table once more, the forging of jumping-up carries out jumping-up second time to accomplishing for the first time to adopt hydraulic press equally, said second time jumping-up process with the first time jumping-up process identical; Repeat the jumping-up and the technology of jumping-up for the first time for the second time, after said forging is finally to be used for the required size of wind power principal axis flange by jumping-up, the collar is removed to accomplish jumping-up technology.
Wherein, said hydraulic press can adopt 3150T hydraulic press or 5000T hydraulic press, preferably adopts the 5000T hydraulic press.
Description of drawings
Fig. 1 is the phase I jumping-up process schematic representation of the embodiment of the invention;
Fig. 2 adds the jumping-up process schematic representation behind the collar for the embodiment of the invention;
The specific embodiment
For technical scheme of the present invention more clearly is described, embodiments of the invention are described in conjunction with the drawings below.
Embodiment
The jumping-up technology of wind power flange of the present invention comprises the steps:
At first, the preparation wind power principal axis flange steel billet that is used for of the present invention in converter.Be warming up to 1300 ℃ at converter; Add steelmaking feed to be refined into the Hi-Stren steel blank that is used for wind power flange; Wherein the chemical composition of Hi-Stren steel is: carbon: 0.25～0.60wt%, silicon: 0.35～0.50wt%, manganese: 1.2～1.70wt%, phosphorus: 0.015～0.025wt%, sulphur: 0.012～0.02wt%, chromium: 0.30～0.80wt%, molybdenum: 0.10～0.30, vanadium: 0.15～0.30wt%, nickel: 0.30～0.50wt%, copper: 0.15～0.3wt%, nitrogen: 0.015～0.05wt%, titanium :≤0.2wt%, niobium :≤0.06wt%, and surplus is an iron; Then said Hi-Stren steel blank continuous casting is become Φ 1500mm blank, said blank obtains being used for the forging of wind power flange after forging;
Then,, carry out the first jumping-up stage of forging please with reference to Fig. 1, this first jumping-up stage for repeatedly replace the first time jumping-up with jumping-up for the second time.Hang in the wind power principal axis flange forging of vertically holding up among the jumping-up equipment that constitutes by heading die and rotary table with suspender, forging is fixed on the rotary table, adopt hydraulic press forging to be carried out said first time of the jumping-up in the first jumping-up stage; At this moment, the A of forging faces up, and B faces down; The process of jumping-up is: earlier the part of forging is carried out jumping-up; After this part jumping-up finishes; With the rotary table rotation, then the other part of forging is carried out jumping-up, so constantly jumping-up rotation; Till jumping-up is all accomplished in the whole surface of forging, guarantee forging is upset as circle with this.After accomplishing the jumping-up first time, then carry out the jumping-up second time in the first jumping-up stage.The forging that is about on the rotary table is sling by suspender; After turning over turnback, be fixed on rotary table once more; At this moment, the A of forging faces down, and B faces up; Same adopt hydraulic press the forging of jumping-up carry out jumping-up second time to accomplishing for the first time, said second time jumping-up process with the first time jumping-up process identical; Repeat the jumping-up and the technology of jumping-up for the first time for the second time, till the height of said forging by jumping-up was half of this forging original height, promptly as shown in Figure 1, the height of forging was h/2 by original height h by jumping-up;
Then, the forging of accomplishing for the first jumping-up stage is carried out the collar, as shown in Figure 2, add the collar of a carbon steel in the outer ring of forging; Because the material of forging is a steel alloy, therefore adopting the main purpose that adds the collar to forging is that radial pressure through the collar reduces the additional potential stress in the upsetting process, thereby the distortion that reduces upsetting process is inhomogeneous;
At last, carry out the second jumping-up stage of forging, this second jumping-up stage for repeatedly replace the first time jumping-up with jumping-up for the second time, this second jumping-up stage also can be with reference to figure 1, different is, at second jumping-up in the stage, the extra carbon steel collar that puts in forging outer ring.Adopt hydraulic press forging to be carried out said first time of the jumping-up in the second jumping-up stage; Its process is: earlier the part of forging is carried out jumping-up, after this part jumping-up finishes, with the rotary table rotation, then the other part of forging is carried out jumping-up, so constantly jumping-up rotation is till jumping-up is all accomplished in the whole surface of forging; Jumping-up for the second time; Forging on the rotary table is sling by suspender; After turning over turnback, be fixed on rotary table once more, the forging of jumping-up carries out jumping-up second time to accomplishing for the first time to adopt hydraulic press equally, said second time jumping-up process with the first time jumping-up process identical; Repeat the jumping-up and the technology of jumping-up for the first time for the second time, after said forging is finally to be used for the required size of wind power principal axis flange by jumping-up, the collar is removed to accomplish jumping-up technology.
Wherein, said hydraulic press can adopt 3150T hydraulic press or 5000T hydraulic press, preferably adopts the 5000T hydraulic press.
Adopt wind power principal axis flange jumping-up technology of the present invention, can reduce unhomogeneity of deformation.
Though described specific embodiments more of the present invention; But it is not to be used to limit the present invention; Protection scope of the present invention is limited appended claim; And those skilled in the art can make various modifications to the present invention under the situation that does not break away from the accompanying claims protection domain.
Claims (2)
1. the jumping-up technology of a wind power principal axis flange is characterized in that, may further comprise the steps:
(1). the preparation of wind power flange steel billet; Be warming up to 1300 ℃ at converter; Add steelmaking feed to be refined into the Hi-Stren steel blank that is used for wind power flange; Wherein the chemical composition of Hi-Stren steel is: carbon: 0.25～0.60wt%, silicon: 0.35～0.50wt%, manganese: 1.2～1.70wt%, phosphorus: 0.015～0.025wt%, sulphur: 0.012～0.02wt%, chromium: 0.30～0.80wt%, molybdenum: 0.10～0.30, vanadium: 0.15～0.30wt%, nickel: 0.30～0.50wt%, copper: 0.15～0.3wt%, nitrogen: 0.015～0.05wt%, titanium :≤0.2wt%, niobium :≤0.06wt%, and surplus is an iron; Then said Hi-Stren steel blank continuous casting is become Φ 1500mm blank, said blank obtains being used for the forging of wind power flange after forging.
(2). the first jumping-up stage of forging; This first jumping-up stage for repeatedly replace the first time jumping-up with the jumping-up second time: hang in the vertical wind power principal axis flange forging of holding up among the jumping-up equipment that constitutes by heading die and rotary table with suspender; Forging is fixed on the rotary table, adopts hydraulic press forging to be carried out said first time of the jumping-up in the first jumping-up stage; Its process is: earlier the part of forging is carried out jumping-up; After this part jumping-up finishes; With the rotary table rotation, then the other part of forging is carried out jumping-up, so constantly jumping-up rotation; Till jumping-up is all accomplished in the whole surface of forging, guarantee forging is upset as circle with this; The jumping-up second time in the first jumping-up stage; Forging on the rotary table is sling by suspender; After turning over turnback, be fixed on rotary table once more; Same adopt hydraulic press the forging of jumping-up carry out jumping-up second time to accomplishing for the first time, said second time jumping-up process with the first time jumping-up process identical; Repeat the jumping-up and the technology of jumping-up for the first time for the second time, till the height of said forging by jumping-up is half of this forging original height.
(3). the collar adds the overcoat of a carbon steel in the outer ring of the forging of completing steps 2.
(4). the second jumping-up stage of forging, this second jumping-up stage for repeatedly replace the first time jumping-up with jumping-up for the second time: adopt hydraulic press forging to be carried out said first time of the jumping-up in the second jumping-up stage; Its process is: earlier the part of forging is carried out jumping-up, after this part jumping-up finishes, with the rotary table rotation, then the other part of forging is carried out jumping-up, so constantly jumping-up rotation is till jumping-up is all accomplished in the whole surface of forging; Jumping-up for the second time; Forging on the rotary table is sling by suspender; After turning over turnback, be fixed on rotary table once more, the forging of jumping-up carries out jumping-up second time to accomplishing for the first time to adopt hydraulic press equally, said second time jumping-up process with the first time jumping-up process identical; Repeat the jumping-up and the technology of jumping-up for the first time for the second time, after said forging is finally to be used for the required size of wind power principal axis flange by jumping-up, the collar is removed to accomplish jumping-up technology.
2. the jumping-up technology of a kind of wind power principal axis flange as claimed in claim 1 is characterized in that: said hydraulic press adopts 3150T hydraulic press or 5000T hydraulic press, preferably adopts the 5000T hydraulic press.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210213987.6A CN102728756B (en) | 2012-06-27 | 2012-06-27 | Wind power spindle flange upsetting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210213987.6A CN102728756B (en) | 2012-06-27 | 2012-06-27 | Wind power spindle flange upsetting process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102728756A true CN102728756A (en) | 2012-10-17 |
| CN102728756B CN102728756B (en) | 2014-12-17 |
Family
ID=46985450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210213987.6A Active CN102728756B (en) | 2012-06-27 | 2012-06-27 | Wind power spindle flange upsetting process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102728756B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921852A (en) * | 2012-11-14 | 2013-02-13 | 西部钛业有限责任公司 | Preparation method of Ti31 titanium alloy flange forge piece |
| CN103031500A (en) * | 2012-12-21 | 2013-04-10 | 无锡市华尔泰机械制造有限公司 | Large-diameter flange and preparation process thereof |
| CN103045961A (en) * | 2012-12-21 | 2013-04-17 | 无锡市华尔泰机械制造有限公司 | Anchoring flange and manufacturing process thereof |
| CN104801643A (en) * | 2015-02-01 | 2015-07-29 | 江苏金源锻造股份有限公司 | Forging technology of lifting hook |
| WO2018086394A1 (en) * | 2016-11-09 | 2018-05-17 | 江阴兴澄特种钢铁有限公司 | Process for producing ls-crnimo30c steel forging using continuous casting billet for subsea oil production wellhead device |
| CN110038989A (en) * | 2019-04-02 | 2019-07-23 | 石钢京诚装备技术有限公司 | A kind of hot forging process of wind power flange |
| CN110257617A (en) * | 2019-07-10 | 2019-09-20 | 河南中原特钢装备制造有限公司 | The forging of big specification 20SiMn main shaft and heat treatment method |
| CN110773692A (en) * | 2019-11-07 | 2020-02-11 | 江阴市恒润环锻有限公司 | Forging method of low-temperature high-strength offshore wind power flange |
| CN112721030A (en) * | 2020-12-28 | 2021-04-30 | 苏州兴嘉锐智能科技有限公司 | High-precision preparation process of turbocharger turbine fan |
| CN113118709A (en) * | 2021-03-31 | 2021-07-16 | 常州大谷液压器材有限公司 | Flange machining method capable of improving mechanical performance of flange |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1830596A (en) * | 2004-10-29 | 2006-09-13 | 斯奈克玛 | Method for processing metal slug, apparatus and method for implementing the same |
| CN101293267A (en) * | 2008-05-23 | 2008-10-29 | 江阴风电法兰制造有限公司 | Continuous upsetting method for large flange at axle end of large-scale wind power principal axle |
| CN201201028Y (en) * | 2008-06-02 | 2009-03-04 | 江阴振宏重型锻造有限公司 | Wind power main spindle big end upsetting apparatus |
| CN101456057A (en) * | 2008-12-01 | 2009-06-17 | 江阴风电法兰制造有限公司 | Large-scale wind electricity main-axis end large-flange tyre die forging tool and method |
| CN101722260A (en) * | 2009-12-10 | 2010-06-09 | 中冶陕压重工设备有限公司 | Free forging method of forge piece of rotary arms |
| CN101767174A (en) * | 2010-02-25 | 2010-07-07 | 无锡透平叶片有限公司 | Loose tooling upsetting device of continuous upsetting heads at both ends of long rod material |
| CN102000756A (en) * | 2010-09-26 | 2011-04-06 | 青特集团有限公司 | Tool for adjusting length of semi-axle upsetting rod |
| CN102433503A (en) * | 2011-12-16 | 2012-05-02 | 江阴同庆机械制造有限公司 | Wind power flange alloy steel and preparation technology of parts thereof |
-
2012
- 2012-06-27 CN CN201210213987.6A patent/CN102728756B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1830596A (en) * | 2004-10-29 | 2006-09-13 | 斯奈克玛 | Method for processing metal slug, apparatus and method for implementing the same |
| CN101293267A (en) * | 2008-05-23 | 2008-10-29 | 江阴风电法兰制造有限公司 | Continuous upsetting method for large flange at axle end of large-scale wind power principal axle |
| CN201201028Y (en) * | 2008-06-02 | 2009-03-04 | 江阴振宏重型锻造有限公司 | Wind power main spindle big end upsetting apparatus |
| CN101456057A (en) * | 2008-12-01 | 2009-06-17 | 江阴风电法兰制造有限公司 | Large-scale wind electricity main-axis end large-flange tyre die forging tool and method |
| CN101722260A (en) * | 2009-12-10 | 2010-06-09 | 中冶陕压重工设备有限公司 | Free forging method of forge piece of rotary arms |
| CN101767174A (en) * | 2010-02-25 | 2010-07-07 | 无锡透平叶片有限公司 | Loose tooling upsetting device of continuous upsetting heads at both ends of long rod material |
| CN102000756A (en) * | 2010-09-26 | 2011-04-06 | 青特集团有限公司 | Tool for adjusting length of semi-axle upsetting rod |
| CN102433503A (en) * | 2011-12-16 | 2012-05-02 | 江阴同庆机械制造有限公司 | Wind power flange alloy steel and preparation technology of parts thereof |
Non-Patent Citations (1)
| Title |
|---|
| 董岚枫等: "700MW级水轮机主轴内法兰终锻成形工艺数值模拟研究", 《锻压装备与制造技术》, no. 03, 30 June 2007 (2007-06-30), pages 55 - 60 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921852A (en) * | 2012-11-14 | 2013-02-13 | 西部钛业有限责任公司 | Preparation method of Ti31 titanium alloy flange forge piece |
| CN102921852B (en) * | 2012-11-14 | 2014-11-26 | 西部钛业有限责任公司 | Preparation method of Ti31 titanium alloy flange forge piece |
| CN103031500A (en) * | 2012-12-21 | 2013-04-10 | 无锡市华尔泰机械制造有限公司 | Large-diameter flange and preparation process thereof |
| CN103045961A (en) * | 2012-12-21 | 2013-04-17 | 无锡市华尔泰机械制造有限公司 | Anchoring flange and manufacturing process thereof |
| CN103045961B (en) * | 2012-12-21 | 2015-02-04 | 无锡市华尔泰机械制造有限公司 | Anchoring flange and manufacturing process thereof |
| CN104801643A (en) * | 2015-02-01 | 2015-07-29 | 江苏金源锻造股份有限公司 | Forging technology of lifting hook |
| WO2018086394A1 (en) * | 2016-11-09 | 2018-05-17 | 江阴兴澄特种钢铁有限公司 | Process for producing ls-crnimo30c steel forging using continuous casting billet for subsea oil production wellhead device |
| CN110038989A (en) * | 2019-04-02 | 2019-07-23 | 石钢京诚装备技术有限公司 | A kind of hot forging process of wind power flange |
| CN110257617A (en) * | 2019-07-10 | 2019-09-20 | 河南中原特钢装备制造有限公司 | The forging of big specification 20SiMn main shaft and heat treatment method |
| CN110773692A (en) * | 2019-11-07 | 2020-02-11 | 江阴市恒润环锻有限公司 | Forging method of low-temperature high-strength offshore wind power flange |
| CN112721030A (en) * | 2020-12-28 | 2021-04-30 | 苏州兴嘉锐智能科技有限公司 | High-precision preparation process of turbocharger turbine fan |
| CN113118709A (en) * | 2021-03-31 | 2021-07-16 | 常州大谷液压器材有限公司 | Flange machining method capable of improving mechanical performance of flange |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102728756B (en) | 2014-12-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102728756B (en) | Wind power spindle flange upsetting process | |
| CN102717237B (en) | Method for forming wind power flange | |
| CN102764954B (en) | Forging process for wind generator spindle | |
| CN102513799A (en) | Ring rolling method for flange of megawatt wind generation set tower | |
| CN102699637A (en) | Process for forging main shaft flange of wind driven generator | |
| CN102974975B (en) | Manufacture the method for wind power flange | |
| CN106040953B (en) | A kind of forging technology of large-scale wind electricity main-axis | |
| CN103184391A (en) | Annular plate steel used for top cover of million-kilowatt-level large-scale hydraulic turbine and manufacturing method thereof | |
| CN102061408A (en) | Method for preparing low-cost titanium alloy | |
| CN104451046A (en) | Manufacturing method of alloy steel for high and cold zone motor shaft | |
| CN104659977A (en) | Sleeving tool and sleeving method | |
| CN204365712U (en) | A kind of heat-resistant antifriction charge roll mill table roller | |
| CN102748382B (en) | Roller bearing for supporting main shaft of wind driven generator | |
| CN204304722U (en) | Suit frock | |
| CN105945186A (en) | High-carbon and high-chromium cold roll forging technology adopting diffusion during forging | |
| CN203728893U (en) | Combined type furnace beam cushion block | |
| CN101585070A (en) | Triple-double method forging new process of 6-meter level aluminum alloy forged ring hydraulic press | |
| CN205147343U (en) | Super large wind -powered electricity generation main shaft is with top device of movable extension | |
| CN110042301A (en) | Economical 400MPa grades of weather-proof peg wire rod, production method and its peg of preparation | |
| CN201918820U (en) | Nonmagnetic steel motor guard ring | |
| CN105251921A (en) | Forging process for main shaft of wind driven generator | |
| CN205056647U (en) | A roll -changing device for cold rolling production line | |
| CN204226121U (en) | Flange at the bottom of reinforcing plate structure formula wind power tower | |
| CN202591516U (en) | Semi-closed tool for forging hollow nuclear power main pipeline | |
| CN201530681U (en) | Special gantry crane rigging for slow cooling of circular steel bar |
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 | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 213300 No. 8, Zhongguancun Avenue, Liyang, Jiangsu Patentee after: Jiangsu Jinyuan High-end Equipment Co., Ltd. Address before: 213376 No. 1008 Ling Ling West Road, Jiangsu, Liyang Patentee before: Jiangsu Jinyuan Forging Co., Ltd. |