CN102728756B - Wind power spindle flange upsetting process - Google Patents
Wind power spindle flange upsetting process Download PDFInfo
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- CN102728756B CN102728756B CN201210213987.6A CN201210213987A CN102728756B CN 102728756 B CN102728756 B CN 102728756B CN 201210213987 A CN201210213987 A CN 201210213987A CN 102728756 B CN102728756 B CN 102728756B
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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 upset forging process.
Background technology
Society, along with the problems such as global energy shortage and environmental pollution are increasingly serious, searching regenerative resource has become the key subjects that countries in the world face.And nature wind energy is compared with other energy, not only reserves are large, widely distributed, never exhausted, but also it is short, stronger than the basic less investment of the construction of hydropower stations, flexibility to have upper detective, construction period, and can effectively contain greenhouse effects and Sandstorm Disaster, the features such as environmental protection, therefore wind-power electricity generation becomes the emphasis of research day by day.
Flange of wind power generation tower barrel (hereinafter referred to as wind power flange) is the crucial connector of wind-power tower, support member and stressed member, wind power flange has very high requirement to quality, this is mainly because wind power equipment needs to work in the wild, stand various extremely atrocious weather environment, therefore, wind power flange must meet the performance of high strength, high tenacity, low-temperature impact resistance.And in wind power equipment, wind power flange all has very large diameter, and its diameter is general all between 1050 ~ 1600mm, and axle body length is between 2400 ~ 4000mm, they have forged technological difficulties on hydraulic press, and that is exactly the wind power flange of how forging wind power principal axis end.At present, large-scale wind electricity main-axis end wind power flange jumping-up adopts traditional forging method to carry out, and this method forged can cause producing the uneven problem of distortion when jumping-up.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of upset forging process that can improve the wind electricity main-axis end wind power flange of deformation uniformity is provided.
The upset forging process of wind power flange of the present invention comprises the steps:
1. the preparation of wind power flange steel billet, 1300 DEG C are warming up at converter, add steelmaking feed to be refined into the Hi-Stren steel blank 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%, surplus is iron, then described Hi-Stren steel blank continuous casting is become Φ 1500mm blank, described blank obtains the forging for wind power flange after forging,
2. the first jumping-up stage of forging, this the first jumping-up stage be repeatedly replace first time jumping-up with second time jumping-up: with suspender the vertical wind power principal axis flange forge piece holded up hung among the jumping-up equipment be made up of heading die and rotary table, forging is fixed on rotary table, adopts hydraulic press to carry out described first time jumping-up in the first jumping-up stage to forging; Its process is: first carry out jumping-up to a part for forging, after this part of jumping-up, rotary table is rotated, then jumping-up is carried out to an other part for forging, so constantly jumping-up rotates, till the whole surface of forging all completes jumping-up, ensure forging to be upset as circle with this; The second time jumping-up in the first jumping-up stage, forging on rotary table is sling by suspender, again rotary table is fixed on after turning over turnback, same employing hydraulic press carries out second time jumping-up to the forging completing first time jumping-up, and the process of described second time jumping-up is identical with the process of jumping-up for the first time; Repeat first time jumping-up and the technique of second time jumping-up, till until the height of described forging by jumping-up being the 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 is the first time jumping-up and second time jumping-up repeatedly replaced: adopt hydraulic press to carry out described first time jumping-up in the second jumping-up stage to forging; Its process is: first carry out jumping-up to a part for forging, and after this part of jumping-up, rotated by rotary table, then carry out jumping-up to an other part for forging, so constantly jumping-up rotates, till the whole surface of forging all completes jumping-up; Second time jumping-up, forging on rotary table is sling by suspender, after turning over turnback, be again fixed on rotary table, the same hydraulic press that adopts carries out second time jumping-up to the forging completing first time jumping-up, and the process of described second time jumping-up is identical with the process of jumping-up for the first time; Repeat first time jumping-up and the technique of second time jumping-up, until described forging by jumping-up for final for after the size needed for wind power principal axis flange, the collar has been removed upset forging process.
Wherein, described hydraulic press can adopt 3150T hydraulic press or 5000T hydraulic press, preferably adopts 5000T hydraulic press.
Accompanying drawing explanation
Fig. 1 is the first stage upset forging process schematic diagram of the embodiment of the present invention;
Fig. 2 is the upset forging process schematic diagram after the embodiment of the present invention adds the collar;
Detailed description of the invention
In order to technical scheme of the present invention is clearly described, below by describing embodiments of the invention by reference to the accompanying drawings.
Embodiment
The upset forging process of wind power flange of the present invention comprises the steps:
First, prepare in converter of the present invention for wind power principal axis flange steel billet.1300 DEG C are warming up at converter, add steelmaking feed to be refined into the Hi-Stren steel blank 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%, surplus is iron, then described Hi-Stren steel blank continuous casting is become Φ 1500mm blank, described blank obtains the forging for wind power flange after forging,
Then, please refer to Fig. 1, carry out the first jumping-up stage of forging, this first jumping-up stage be repeatedly replace first time jumping-up and second time jumping-up.The wind power principal axis flange forge piece vertically holded up hung among the jumping-up equipment be made up of heading die and rotary table with suspender, forging is fixed on rotary table, adopt hydraulic press to carry out described first time jumping-up in the first jumping-up stage to forging; Now, the A of forging faces up, and B faces down; The process of jumping-up is: first carry out jumping-up to a part for forging, after this part of jumping-up, rotary table is rotated, then jumping-up is carried out to an other part for forging, so constantly jumping-up rotates, till the whole surface of forging all completes jumping-up, ensure forging to be upset as circle with this.After completing first time jumping-up, then carry out the second time jumping-up in the first jumping-up stage.Sling by suspender by the forging on rotary table, again rotary table is fixed on after turning over turnback, now, the A of forging faces down, B faces up, same employing hydraulic press carries out second time jumping-up to the forging completing first time jumping-up, and the process of described second time jumping-up is identical with the process of jumping-up for the first time; Repeat first time jumping-up and the technique of second time jumping-up, till until the height of described forging by jumping-up being the half of this forging original height, namely as shown in Figure 1, the height of forging is h/2 by original height h by jumping-up;
Then, the collar is carried out to the forging completing for the first jumping-up stage, as shown in Figure 2, add the collar of a carbon steel in the outer ring of forging; Material due to forging is steel alloy, therefore adopts the main purpose adding the collar to forging to be the additional potential stress reduced by the radial pressure of the collar in upsetting process, thus the distortion reducing upsetting process is uneven;
Finally, carry out the second jumping-up stage of forging, this second jumping-up stage be repeatedly replace first time jumping-up and second time jumping-up, this second jumping-up stage also can with reference to figure 1, and difference is, in the second jumping-up stage, forging outer ring additionally puts the carbon steel collar.Hydraulic press is adopted to carry out described first time jumping-up in the second jumping-up stage to forging; Its process is: first carry out jumping-up to a part for forging, and after this part of jumping-up, rotated by rotary table, then carry out jumping-up to an other part for forging, so constantly jumping-up rotates, till the whole surface of forging all completes jumping-up; Second time jumping-up, forging on rotary table is sling by suspender, after turning over turnback, be again fixed on rotary table, the same hydraulic press that adopts carries out second time jumping-up to the forging completing first time jumping-up, and the process of described second time jumping-up is identical with the process of jumping-up for the first time; Repeat first time jumping-up and the technique of second time jumping-up, until described forging by jumping-up for final for after the size needed for wind power principal axis flange, the collar has been removed upset forging process.
Wherein, described hydraulic press can adopt 3150T hydraulic press or 5000T hydraulic press, preferably adopts 5000T hydraulic press.
Adopt wind power principal axis flange upset forging process of the present invention, can Reducing distortion inhomogeneities.
Although described specific embodiments more of the present invention; but it is not intended to limit the present invention; protection scope of the present invention is limited to the appended claims; and those skilled in the art are not when departing from claims protection domain, various amendment can be made to the present invention.
Claims (1)
1. a upset forging process for wind power principal axis flange, is characterized in that, comprises the following steps:
(1) preparation of wind power flange steel billet, 1300 DEG C are warming up at converter, add steelmaking feed to be refined into the Hi-Stren steel blank for wind power flange, wherein the chemical composition of Hi-Stren steel is: carbon: 0.25 ~ 0.60wt%, silicon: 0.35 ~ 0.50wt%, manganese: 1.70wt%, phosphorus: 0.025wt%, sulphur: 0.02wt%, chromium: 0.30wt%, molybdenum: 0.10wt%, vanadium: 0.15 ~ 0.30wt%, nickel: 0.30 ~ 0.50wt%, copper: 0.3wt%, nitrogen: 0.015wt%, titanium :≤0.2wt%, niobium :≤0.06wt%, surplus is iron, then described Hi-Stren steel blank continuous casting is become Φ 1500mm blank, described blank obtains the forging for wind power flange after forging,
(2) the first jumping-up stage of forging, this the first jumping-up stage be repeatedly replace first time jumping-up with second time jumping-up: with suspender the vertical wind power principal axis flange forge piece holded up hung among the jumping-up equipment be made up of heading die and rotary table, forging is fixed on rotary table, adopts 5000T hydraulic press to carry out described first time jumping-up in the first jumping-up stage to forging; Its process is: first carry out jumping-up to a part for forging, after this part of jumping-up, rotary table is rotated, then jumping-up is carried out to an other part for forging, so constantly jumping-up rotates, till the whole surface of forging all completes jumping-up, ensure forging to be upset as circle with this; The second time jumping-up in the first jumping-up stage, forging on rotary table is sling by suspender, again rotary table is fixed on after turning over turnback, same employing 5000T hydraulic press carries out second time jumping-up to the forging completing first time jumping-up, and the process of described second time jumping-up is identical with the process of jumping-up for the first time; Repeat first time jumping-up and the technique of second time jumping-up, till until the height of described forging by jumping-up being the half of this forging original height;
(3) 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 is the first time jumping-up and second time jumping-up repeatedly replaced: adopt 5000T hydraulic press to carry out described first time jumping-up in the second jumping-up stage to forging; Its process is: first carry out jumping-up to a part for forging, and after this part of jumping-up, rotated by rotary table, then carry out jumping-up to an other part for forging, so constantly jumping-up rotates, till the whole surface of forging all completes jumping-up; Second time jumping-up, forging on rotary table is sling by suspender, after turning over turnback, be again fixed on rotary table, the same 5000T hydraulic press that adopts carries out second time jumping-up to the forging completing first time jumping-up, and the process of described second time jumping-up is identical with the process of jumping-up for the first time; Repeat first time jumping-up and the technique of second time jumping-up, until described forging by jumping-up for final for after the size needed for wind power principal axis flange, the collar has been removed upset forging process.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210213987.6A CN102728756B (en) | 2012-06-27 | 2012-06-27 | Wind power spindle flange upsetting process |
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| CN201210213987.6A CN102728756B (en) | 2012-06-27 | 2012-06-27 | Wind power spindle flange upsetting process |
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| CN102728756B true CN102728756B (en) | 2014-12-17 |
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| 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 |
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| 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 |
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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. |