CN1986099A - Rotating extrusion process for producing great diameter and long tubular workpiece with both inner and outer flanges - Google Patents
Rotating extrusion process for producing great diameter and long tubular workpiece with both inner and outer flanges Download PDFInfo
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- CN1986099A CN1986099A CN 200510132000 CN200510132000A CN1986099A CN 1986099 A CN1986099 A CN 1986099A CN 200510132000 CN200510132000 CN 200510132000 CN 200510132000 A CN200510132000 A CN 200510132000A CN 1986099 A CN1986099 A CN 1986099A
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Abstract
The rotating extrusion process for producing great diameter and long tubular workpiece with both inner and outer flanges includes the following steps: 1. heating the rotating variable cross section extrusion mold to 300-350 deg.c; 2. hoisting the blank to the mold; 3. heating the blank to 250-280 deg.c; 4. forward rotating extrusion in the thinning rate controlled in 15-25 % each gate and feeding rate controlled in 0.8-1.2 mm/turn, and measuring temperature and compensating heating to maintain the blank temperature in 250-280 deg.c; 5. reversely rotating extrusion after disassembling the upper forging cover and the feeding ring; 6. demolding after heating the extruded workpiece to 200 deg.c; and 7. machining after cooling. The present invention can produce 3 m long tubular workpiece with both inner and outer flanges through rotating extrusion.
Description
Technical field
The present invention relates to special-shaped cylindrical member preparing technical field, belong to the great diameter and long tubular workpiece spinning processing method of outward flange in the band.
Background technology
Along with the development of causes such as the Aeronautics and Astronautics and the energy, major diameter (internal diameter is greater than the 450mm) long tubular workpiece (greater than 3m) of outward flange is got more and more and is used in these fields in the band.On existing Equipment Foundations, use conventional spin-on process can only process the straight cylindrical member of not being with interior outward flange.And adopting the forging blank method of machining again, present casting set pattern lattice and Forging Technology are difficult to realize producing the great diameter and long tubular workpiece of being with interior outward flange.For this reason, according to the vertical spinning machine of existing 2m, the spinning roller stroke has only 1.6m, need design variable cross-section mould, adopt the method for positive and reverse return combination, shape out the great diameter and long tubular workpiece of outward flange in the band, could satisfy the needs of the development of causes such as the Aeronautics and Astronautics and the energy.
Summary of the invention
The purpose of this invention is to provide a kind of with in the great diameter and long tubular workpiece spinning processing method of outward flange, it is specially adapted to internal diameter greater than 450mm, the length great diameter and long tubular workpiece spinning greater than outward flange in the band of 3m.By design variable cross-section mould, adopt the positive and negative process combined method of revolving, can have only the vertical spinning machine mould pressing of the 2m of 1.6m to go out the cylindrical member of outward flange in the 3m band at the spinning roller stroke.
For achieving the above object, the present invention takes following design:
A kind of great diameter and long tubular workpiece spinning processing method with interior outward flange, it comprises the following steps:
(1), spinning mold heated: at first spinning variable cross-section core is heated; Be heated to 300～350 ℃;
(2), the lifting of spinning blank: the spinning blank is lifted on the variable cross-section core, treat to load onto the material ring behind the blanking, install fixed cap additional, entangle the spinning blank firm;
(3), the hot spinning blank: hot spinning blank to 250～280 ℃, prepare beginning spinning;
(4), blank dextrorotation: according to the distance of blank to cutting-off bushing, calculated the dextrorotation development length, distribute dextrorotation passage and every time reduction, the passage reduction is controlled at 15%～25%, feed rate is controlled at 0.8～1.2mm/ to be changeed, every time has revolved will be to the blank thermometric, if temperature does not reach 250～280 ℃, need to revolve again after the compensation heating, when the dextrorotation final pass finishes soon, keep a close eye on blank bottom situation,, prevent the barrel distortion of spinning blank if touching cutting-off bushing should stop spinning at once;
(5), blank derotation: after dextrorotation finishes, dismounting upper end fixed cap and material loading ring, the beginning derotation, as this moment the blank wall thickness still greater than 45mm, carry out spinning after needing heating to reach 250～280 ℃, if wall thickness less than 45mm, directly adopts cold revolving, last passage reduces feed rate and is convenient to the hole enlargement demoulding for ease of the demoulding;
(6), the demoulding: will revolve good cylindrical member and be heated to 200 ℃, and cylindrical shell be expanded reduce to paste the mould resistance, hanging above the employing leaves behind hangs out cylindrical member with the spinning roller pushing tow is light and slow;
(7), machining is shaped: after treating the cylindrical member cooling, it is lifted on the lathe, the machining outward flange cylindrical member in the needed band that is shaped is carried out finished machined again after heat-treating then.
Advantage of the present invention is:
1, the variable cross-section die forming inside and outside flange that goes out to satisfy the demand;
2, remedied the deficiency (comparatively domestic big spinning machine spinning roller stroke 1.6m is only arranged) of existing equipment condition, can rotary pressing processing have gone out cylindrical member greater than 3 meters;
3, the rotary pressing processing cylindrical member of coming out can reach the AA level through flaw detection;
4, production process is simple, and is easy to operate, and production is stability and favorable reproducibility as a result;
5, the great diameter and long tubular workpiece that is suitable for outward flange in the production band in batches.
Description of drawings
Fig. 1 is a blank schematic diagram for the treatment of spinning.
Fig. 2 is a dextrorotation schematic diagram after the frock.
Fig. 3 is the derotation schematic diagram.
The schematic diagram of cylindrical member after Fig. 4 spinning end demoulding.
The schematic diagram of cylindrical member after Fig. 5 machining and the finishing.
The specific embodiment
Embodiment 1: a kind of great diameter and long tubular workpiece spinning processing method with interior outward flange, select 6061 aluminium alloy φ, 635 * 1400 forging stocks for use, and it comprises the following steps:
(1), the blank after will forging is machined into the spinning blank, inner flange aperture and mould upper end diameter of section coincide, outward flange aperture and mould lower end diameter of section are identical, spinning blank (see figure 1).
(2), core 5 is heated to 300～350 ℃, lifted spinning blank 3, and assembled upper end fixed cap 1 and material loading ring 2, the dextrorotation (see figure 2) is carried out in heating blank to 250～280 ℃, and spinning blank 3 is extended along the direction of arrow.According to the distance of blank to cutting-off bushing 6, calculated the dextrorotation development length, distribute dextrorotation passage and every time reduction, the passage reduction is controlled at 15%, feed rate is controlled at 1.2mm/ to be changeed, and when the dextrorotation final pass finishes soon, keep a close eye on blank bottom situation, if touching cutting-off bushing should stop spinning at once, prevent the barrel distortion of spinning blank.
(3), after dextrorotation finishes, remove stage makeup and costume upper end fixed cap 1 and material loading ring (see figure 3) are prepared derotation, wall-thickness measurement, redistribute passage, front 2 passages of derotation adopt heat to revolve heating-up temperature to 250～280 ℃, and back 2 passages adopt cold revolving, and spinning blank 3 is extended along the direction of arrow.Simultaneously can also suitably reduce feed rate, be convenient to the hole enlargement demoulding.
(4), the demoulding: will revolve good cylindrical member and be heated to 200 ℃, and cylindrical shell be expanded reduce to paste the mould resistance, hanging above the employing leaves behind hangs out cylindrical member with the spinning roller pushing tow is light and slow, the cylindrical member (see figure 4) after the demoulding;
(5), machining is shaped: after treating the cylindrical member cooling, it is lifted on the lathe, the machining outward flange cylindrical member (see figure 5) in the needed band that is shaped is carried out finished machined again after heat-treating then.
Embodiment 2: a kind of great diameter and long tubular workpiece spinning processing method with interior outward flange, select 6061 aluminium alloy φ, 635 * 1400 forging stocks for use, and it comprises the following steps:
(1), the blank after will forging is machined into the spinning blank, inner flange aperture and mould upper end diameter of section coincide, outward flange aperture and mould lower end diameter of section are identical, the spinning blank is seen Fig. 1.
(2), core is heated to 300～350 ℃, lifted the spinning blank, and assembled upper end fixed cap 1 and material loading ring, the dextrorotation (see figure 2) is carried out in heating blank to 250～280 ℃, and spinning blank 3 is extended along the direction of arrow.According to the distance of blank to cutting-off bushing, calculated the dextrorotation development length, distribute dextrorotation passage and every time reduction, the passage reduction is controlled at 20%, feed rate is controlled at 1.0mm/ to be changeed, and when the dextrorotation final pass finishes soon, keep a close eye on blank bottom situation, if touching cutting-off bushing should stop spinning at once, prevent barrel distortion.
(3), after dextrorotation finishes, remove stage makeup and costume upper end fixed cap 1 and material loading ring (see figure 3) are prepared derotation, wall-thickness measurement, redistribute passage, front 2 passages of derotation adopt heat to revolve heating-up temperature to 250～280 ℃, and back 2 passages adopt cold revolving, and spinning blank 3 is extended along the direction of arrow.Simultaneously can also suitably reduce feed rate, be convenient to the hole enlargement demoulding.
(4), the demoulding: will revolve good cylindrical member and be heated to 200 ℃, and cylindrical shell be expanded reduce to paste the mould resistance, hanging above the employing leaves behind hangs out cylindrical member with the spinning roller pushing tow is light and slow, the cylindrical member (see figure 4) after the demoulding;
(5), machining is shaped: after treating the cylindrical member cooling, it is lifted on the lathe, the machining outward flange cylindrical member (see figure 5) in the needed band that is shaped is carried out finished machined again after heat-treating then.
Embodiment 3: a kind of great diameter and long tubular workpiece spinning processing method with interior outward flange, select 6061 aluminium alloy φ, 635 * 1400 forging stocks for use, and it comprises the following steps:
(1), the blank after will forging is machined into the spinning blank, inner flange aperture and mould upper end diameter of section coincide, outward flange aperture and mould lower end diameter of section are identical, the spinning blank is seen Fig. 1.
(2), core is heated to 300～350 ℃, lifted the spinning blank, and assembled upper end fixed cap 1 and material loading ring, the dextrorotation (see figure 2) is carried out in heating blank to 250～280 ℃, and spinning blank 3 is extended along the direction of arrow.According to the distance of blank to cutting-off bushing, calculated the dextrorotation development length, distribute dextrorotation passage and every time reduction, the passage reduction is controlled at 25%, feed rate is controlled at 0.8mm/ to be changeed, and when the dextrorotation final pass finishes soon, keep a close eye on blank bottom situation, if touching cutting-off bushing should stop spinning at once, prevent barrel distortion.
(3), after dextrorotation finishes, remove stage makeup and costume upper end fixed cap 1 and material loading ring (see figure 3) are prepared derotation, wall-thickness measurement, redistribute passage, front 2 passages of derotation adopt heat to revolve heating-up temperature to 250～280 ℃, and back 2 passages adopt cold revolving, and spinning blank 3 is extended along the direction of arrow.Simultaneously can also suitably reduce feed rate, be convenient to the hole enlargement demoulding.
(4), the demoulding: will revolve good cylindrical member and be heated to 200 ℃, and cylindrical shell be expanded reduce to paste the mould resistance, hanging above the employing leaves behind hangs out cylindrical member with the spinning roller pushing tow is light and slow, and the cylindrical member after the demoulding is seen Fig. 4;
(5), machining is shaped: after treating the cylindrical member cooling, it is lifted on the lathe, the machining outward flange cylindrical member (see figure 5) in the needed band that is shaped is carried out finished machined again after heat-treating then.
Claims (1)
1, a kind of great diameter and long tubular workpiece spinning processing method with interior outward flange, it comprises the following steps:
(1), spinning mold heated: at first spinning variable cross-section core (5) is heated; Be heated to 300～350 ℃;
(2), the lifting of spinning blank: spinning blank (3) is lifted on the variable cross-section core (5), treat to load onto material ring (2) behind the blanking, install fixed cap (1) additional, entangle the spinning blank firm;
(3), the hot spinning blank: hot spinning blank to 250～280 ℃, prepare beginning spinning;
(4), blank dextrorotation: according to the distance of blank to cutting-off bushing (6), calculated the dextrorotation development length, distribute dextrorotation passage and every time reduction, the passage reduction is controlled at 15%～25%, feed rate is controlled at 0.8～1.2mm/ to be changeed, every time has revolved will be to the blank thermometric, if temperature does not reach 250～280 ℃, need to revolve again after the compensation heating, when the dextrorotation final pass finishes soon, keep a close eye on blank bottom situation,, prevent the barrel distortion of spinning blank (3) if touching cutting-off bushing should stop spinning at once;
(5), blank derotation: after dextrorotation finishes, dismounting upper end fixed cap (1) and material loading ring (2), the beginning derotation, as this moment the blank wall thickness still greater than 45mm, carry out spinning after needing heating to reach 250～280 ℃, if wall thickness less than 45mm, directly adopts cold revolving, last passage reduces feed rate and is convenient to the hole enlargement demoulding for ease of the demoulding;
(6), the demoulding: will revolve good cylindrical member and be heated to 200 ℃, and cylindrical shell be expanded reduce to paste the mould resistance, hanging above the employing leaves behind hangs out cylindrical member with the spinning roller pushing tow is light and slow;
(7), machining is shaped: after treating the cylindrical member cooling, it is lifted on the lathe, the machining outward flange cylindrical member in the needed band that is shaped is carried out finished machined again after heat-treating then.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005101320008A CN100446884C (en) | 2005-12-22 | 2005-12-22 | Rotating extrusion process for producing great diameter and long tubular workpiece with both inner and outer flanges |
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| CNB2005101320008A CN100446884C (en) | 2005-12-22 | 2005-12-22 | Rotating extrusion process for producing great diameter and long tubular workpiece with both inner and outer flanges |
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| CN1986099A true CN1986099A (en) | 2007-06-27 |
| CN100446884C CN100446884C (en) | 2008-12-31 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101367103B (en) * | 2008-07-31 | 2010-06-23 | 镁联科技（芜湖）有限公司 | Magnesium alloy sheet material flow forming and molding process |
| CN102284607A (en) * | 2011-08-12 | 2011-12-21 | 中国航天科技集团公司长征机械厂 | Method for manufacturing welding neck flange in high-pressure switch |
| CN102913688A (en) * | 2012-11-02 | 2013-02-06 | 三一重工股份有限公司 | Delivery pipe, manufacturing method thereof and concrete pumping device |
| CN103331355A (en) * | 2013-06-07 | 2013-10-02 | 浙江水利水电专科学校 | Cold-extruding and spinning composite precision forging method for non-straight cavity inner wall cup tube |
| CN105081041A (en) * | 2015-09-17 | 2015-11-25 | 青岛中天鹏锻压制造有限公司 | Brute-force hot-spinning accurate plastic forming method for hollow train shaft workblank |
| CN105728537A (en) * | 2014-12-09 | 2016-07-06 | 北京有色金属研究总院 | Hot-spinning cogging method based on nonuniform heating of aluminum alloy |
| CN107186444A (en) * | 2017-06-28 | 2017-09-22 | 江阴普洋法兰有限公司 | A kind of hubbed flange processing technology |
| CN112496136A (en) * | 2020-11-11 | 2021-03-16 | 晋西工业集团有限责任公司 | Forming method of thin-wall cylindrical part with large length-diameter ratio |
Families Citing this family (1)
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| CN102773323B (en) * | 2012-07-31 | 2014-11-12 | 华南理工大学 | Strong force rotary pressing molding method of nanocrystalline/superfine crystal carbon steel cylindrical piece |
Family Cites Families (4)
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| JPH09239472A (en) * | 1996-03-08 | 1997-09-16 | Nippon Spindle Mfg Co Ltd | Method for drawing base stock for bellows |
| JP3406293B2 (en) * | 1999-12-03 | 2003-05-12 | 株式会社ディムコ | Metallic ring and method for producing the same |
| CN1403220A (en) * | 2002-09-30 | 2003-03-19 | 西北有色金属研究院 | Variable-wall metal tube and its making process |
| CN1216176C (en) * | 2002-12-20 | 2005-08-24 | 中国科学院金属研究所 | High temperature alloy tube processing method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101367103B (en) * | 2008-07-31 | 2010-06-23 | 镁联科技（芜湖）有限公司 | Magnesium alloy sheet material flow forming and molding process |
| CN102284607A (en) * | 2011-08-12 | 2011-12-21 | 中国航天科技集团公司长征机械厂 | Method for manufacturing welding neck flange in high-pressure switch |
| CN102284607B (en) * | 2011-08-12 | 2013-10-09 | 中国航天科技集团公司长征机械厂 | Method for manufacturing welding neck flange in high-pressure switch |
| CN102913688A (en) * | 2012-11-02 | 2013-02-06 | 三一重工股份有限公司 | Delivery pipe, manufacturing method thereof and concrete pumping device |
| CN103331355A (en) * | 2013-06-07 | 2013-10-02 | 浙江水利水电专科学校 | Cold-extruding and spinning composite precision forging method for non-straight cavity inner wall cup tube |
| CN105728537A (en) * | 2014-12-09 | 2016-07-06 | 北京有色金属研究总院 | Hot-spinning cogging method based on nonuniform heating of aluminum alloy |
| CN105081041A (en) * | 2015-09-17 | 2015-11-25 | 青岛中天鹏锻压制造有限公司 | Brute-force hot-spinning accurate plastic forming method for hollow train shaft workblank |
| CN105081041B (en) * | 2015-09-17 | 2017-07-07 | 青岛中天鹏锻压制造有限公司 | Hollow train shaft blank strength hot spinning precision plastic forming method |
| CN107186444A (en) * | 2017-06-28 | 2017-09-22 | 江阴普洋法兰有限公司 | A kind of hubbed flange processing technology |
| CN112496136A (en) * | 2020-11-11 | 2021-03-16 | 晋西工业集团有限责任公司 | Forming method of thin-wall cylindrical part with large length-diameter ratio |
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| CN100446884C (en) | 2008-12-31 |
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Effective date of registration: 20190702 Address after: 101407 No. 11 Xingke East Street, Yanqi Economic Development Zone, Huairou District, Beijing Patentee after: Research Institute of engineering and Technology Co., Ltd. Address before: 100088, 2, Xinjie street, Beijing Patentee before: General Research Institute for Nonferrous Metals |
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Effective date of registration: 20210722 Address after: 101407 No.11, Xingke East Street, Yanqi Economic and Technological Development Zone, Huairou District, Beijing Patentee after: Youyan metal composite technology Co.,Ltd. Address before: 101407 No. 11 Xingke East Street, Yanqi Economic Development Zone, Huairou District, Beijing Patentee before: YOUYAN ENGINEERING TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. |
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