CN103589975B - Die-less spinning technology for large thick-wall aluminum alloy curved bus type rotary body part - Google Patents
Die-less spinning technology for large thick-wall aluminum alloy curved bus type rotary body part Download PDFInfo
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Abstract
The invention relates to a die-less spinning technology for a large thick-wall aluminum alloy curved bus type rotary body part. The die-less spinning technology comprises the following steps: S1, preforming: determining the diameter of a blank according to a part drawing, selecting the blank, processing a fillet, and preforming the blank by a deep drawing technology; S2, primary spinning: setting moving traces of a spinning roller and a forming roller, and setting a feeding ratio, a down-pressing amount, a staggering distance and a deformation parameter; S3, primary annealing; S4, secondary spinning; S5, secondary annealing; S6, spinning correction; S7, quenching and shape correction to obtain a finished product. The die-less spinning technology disclosed by the invention has the advantages of simplicity, convenience in expansion to die-less spinning of end socket parts of various specifications, wide application range and short technical period, and the quality stability of the product is greatly improved.
Description
Technical field
The present invention relates to a kind of preparation technology of thick-wall aluminum alloy end socket part, particularly the bent bus type revolving parts of large thick-wall aluminum alloy is without mould spinning process.
Background technology
Hood is the main load-carrying construction part of certain model, and be the bent bus type revolving parts of typical large thick-wall aluminum alloy, whole thrust when being used for bearing full bullet emission state, adopts without mould spinning process technology.At present, the domestic research being engaged in spinning process aspect mainly concentrates on the technical study of the similar ferrous metal such as cylindrical member, Tapered Cup, large-sized end enclosure, less to the aspect research of large thick-wall aluminium alloy end socket series products spinning process.
Document Xi'an Aerospacemotor Machine Factory " spinning process technical research " describes φ 2000mm with low head and cylindrical shell ground spinning process, but involved that material is unimach, and the spinning process adopted is shear spinning.
Document " power spinning of tube workpiece process finite element numerical simulation " describes rotary pressed head and normally adopts one-step method cold spinning, but to rotary pressed head passage, roller shape and the technological parameter such as movement locus, feed ratio Research on Regularity need deeply.
Document " the accurate spin forming technique research of aluminum alloy part " is introduced, the domestic simple spin the process at present research of spin forming technique being only limitted to part, i.e. conventional spinning or shear spinning, with the spinning process of the simple shape such as cylindrical member, Tapered Cup part, and the research of the research of the accurate mould pressing relevant to large aluminum alloy Complex Thin Shell particularly composite spinning rarely has report.
Summary of the invention
The object of the invention is to the shortcoming overcoming prior art, provide a kind of technique simple, improve product quality stability, the bent bus type revolving parts of applied widely and that process cycle is short large thick-wall aluminum alloy is without mould spinning process.
Object of the present invention is achieved through the following technical solutions: the bent bus type revolving parts of large thick-wall aluminum alloy comprises the following steps without mould spinning process:
S1, preform: according to detail drawing determination blank diameter, choose blank, and process fillet, adopt deep-drawing technique that blank is carried out preform;
S2, revolve a time: the movement locus of setting spinning roller and format roll, setting feed ratio be 2.5 ~ 2.7, volume under pressure is 0 ~ 1mm, dislocation apart from be 28 ~ 35mm, deflection is less than 140mm, and the product after preform is carried out spinning;
S3, annealing one: it comprises following sub-step:
S31, unlatching annealing furnace, be set as 470 DEG C ~ 500 DEG C by annealing temperature, then start to heat up;
S32, after temperature stabilization, will the half-finished parts after a time revolved slowly deliver to the flat-temperature zone of annealing furnace;
S33, timing from during half-finished parts arrival flat-temperature zone, insulation 280min ~ 320min;
After S34, annealing time reach, part to be come out of the stove air cooling with fork truck when being cooled to 260 DEG C with the cooldown rate of 18 DEG C/h ~ 22 DEG C/h;
S4, revolve two passages: the movement locus of setting spinning roller and format roll, and set that feed ratio is 2.6 ~ 2.8, volume under pressure is 1 ~ 2mm, dislocation apart from be 26 ~ 30mm, deflection is less than 140mm, and the part of annealed is carried out second time spinning;
S5, annealing two: repeat step S3;
Correction is revolved in S6, school: the part after second time annealing is carried out school and revolves correction, make part meet dimension precision requirement;
S7, quenching, school shape: Quenching Treatment is carried out to part, and correct shape process within 30min, obtain finished product.
In described step S7, quenching technical comprises following sub-step:
S71, unlatching nitrate groove, be set as 490 DEG C ~ 510 DEG C by hardening heat, then start to heat up;
S72, after temperature stabilization, the half-finished parts completing spinning is slowly delivered to the flat-temperature zone of nitrate groove;
S73, timing from during half-finished parts arrival flat-temperature zone, insulation 45min ~ 55min;
After S74, temperature retention time reach, within 40s, part is tilted 5 ° ~ 10 ° and enter water, enter water speed and control at 0.2m/s ~ 0.4m/s.
The present invention has the following advantages: adopt and (namely divide preform without mould spinning " three-step approach ", revolve a time, revolve two passage three steps to be shaped), determine the bent bus type revolving parts of large thick-wall aluminum alloy without mould spinning process key process parameter (as spinning pass, Roller locus, feed ratio, dislocation distance etc.), the bent bus type revolving parts of large thick-wall aluminum alloy is without mould spinning process preparation method to provide one to determine fast and accurately, this preparation method's technique is simple, all size end socket part can be expanded to easily without mould spinning, applied widely, and process cycle is short, also have the quality stability aspect of product and significantly promote.
Accompanying drawing explanation
Fig. 1 is the movement locus schematic diagram revolving a time spinning roller and format roll;
Fig. 2 is the movement locus schematic diagram revolving two passage spinning rollers and format roll.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention will be further described, but protection scope of the present invention is not limited to the following stated.
[embodiment 1]:
As depicted in figs. 1 and 2, the bent bus type revolving parts of large thick-wall aluminum alloy comprises the following steps without mould spinning process:
S1, preform: according to detail drawing determination blank diameter, choose blank, and process fillet, adopt deep-drawing technique that blank is carried out preform;
S2, revolve a time: the movement locus of setting spinning roller and format roll, setting feed ratio be 2.7, volume under pressure is 0mm, dislocation apart from being 130mm for 28mm, deflection, the product after preform is carried out spinning;
S3, annealing one: it comprises following sub-step:
S31, unlatching annealing furnace, be set as 470 DEG C by annealing temperature, then start to heat up;
S32, after temperature stabilization, will the half-finished parts after a time revolved slowly deliver to the flat-temperature zone of annealing furnace;
S33, timing from during half-finished parts arrival flat-temperature zone, insulation 320min;
After S34, annealing time reach, part to be come out of the stove air cooling with fork truck when being cooled to 260 DEG C with the cooldown rate of 18 DEG C/h;
S4, revolve two passages: the movement locus of setting spinning roller and format roll, and set that feed ratio is 2.6, volume under pressure is 2mm, dislocation apart from being 120mm for 30mm, deflection, the part of annealed is carried out second time spinning;
S5, annealing two: repeat step S3;
Correction is revolved in S6, school: the part after second time annealing is carried out school and revolves correction, make part meet dimension precision requirement;
S7, quenching, school shape: Quenching Treatment is carried out to part, and correct shape process within 30min, obtain finished product.
In described step S7, quenching technical comprises following sub-step:
S71, unlatching nitrate groove, be set as 510 DEG C by hardening heat, then start to heat up;
S72, after temperature stabilization, the half-finished parts completing spinning is slowly delivered to the flat-temperature zone of nitrate groove;
S73, timing from during half-finished parts arrival flat-temperature zone, insulation 45min;
After S74, temperature retention time reach, part is tilted 10 ° within 40s and enter water, enter water speed and control at 0.2m/s.
[embodiment 2]:
As depicted in figs. 1 and 2, the bent bus type revolving parts of large thick-wall aluminum alloy comprises the following steps without mould spinning process:
S1, preform: according to detail drawing determination blank diameter, choose blank, and process fillet, adopt deep-drawing technique that blank is carried out preform;
S2, revolve a time: the movement locus of setting spinning roller and format roll, setting feed ratio be 2.6, volume under pressure is 0.5mm, dislocation apart from being 138mm for 31mm, deflection, the product after preform is carried out spinning;
S3, annealing one: it comprises following sub-step:
S31, unlatching annealing furnace, be set as 485 DEG C by annealing temperature, then start to heat up;
S32, after temperature stabilization, will the half-finished parts after a time revolved slowly deliver to the flat-temperature zone of annealing furnace;
S33, timing from during half-finished parts arrival flat-temperature zone, insulation 300min;
After S34, annealing time reach, part to be come out of the stove air cooling with fork truck when being cooled to 260 DEG C with the cooldown rate of 20 DEG C/h;
S4, revolve two passages: the movement locus of setting spinning roller and format roll, and set that feed ratio is 2.7, volume under pressure is 1.5mm, dislocation apart from being 139mm for 28mm, deflection, the part of annealed is carried out second time spinning;
S5, annealing two: repeat step S3;
Correction is revolved in S6, school: the part after second time annealing is carried out school and revolves correction, make part meet dimension precision requirement;
S7, quenching, school shape: Quenching Treatment is carried out to part, and correct shape process within 30min, obtain finished product.
In described step S7, quenching technical comprises following sub-step:
S71, unlatching nitrate groove, be set as 502 DEG C by hardening heat, then start to heat up;
S72, after temperature stabilization, the half-finished parts completing spinning is slowly delivered to the flat-temperature zone of nitrate groove;
S73, timing from during half-finished parts arrival flat-temperature zone, insulation 50min;
After S74, temperature retention time reach, part is tilted 8 ° within 40s and enter water, enter water speed and control at 0.3m/s.
[embodiment 3]:
As depicted in figs. 1 and 2, the bent bus type revolving parts of large thick-wall aluminum alloy comprises the following steps without mould spinning process:
S1, preform: according to detail drawing determination blank diameter, choose blank, and process fillet, adopt deep-drawing technique that blank is carried out preform;
S2, revolve a time: the movement locus of setting spinning roller and format roll, setting feed ratio be 2.5, volume under pressure is 1mm, dislocation apart from being 120mm for 35mm, deflection, the product after preform is carried out spinning;
S3, annealing one: it comprises following sub-step:
S31, unlatching annealing furnace, be set as 500 DEG C by annealing temperature, then start to heat up;
S32, after temperature stabilization, will the half-finished parts after a time revolved slowly deliver to the flat-temperature zone of annealing furnace;
S33, timing from during half-finished parts arrival flat-temperature zone, insulation 280min;
After S34, annealing time reach, part to be come out of the stove air cooling with fork truck when being cooled to 260 DEG C with the cooldown rate of 22 DEG C/h;
S4, revolve two passages: the movement locus of setting spinning roller and format roll, and set that feed ratio is 2.8, volume under pressure is 1mm, dislocation apart from being 132mm for 26mm, deflection, the part of annealed is carried out second time spinning;
S5, annealing two: repeat step S3;
Correction is revolved in S6, school: the part after second time annealing is carried out school and revolves correction, make part meet dimension precision requirement;
S7, quenching, school shape: Quenching Treatment is carried out to part, and correct shape process within 30min, obtain finished product.
In described step S7, quenching technical comprises following sub-step:
S71, unlatching nitrate groove, be set as 490 DEG C by hardening heat, then start to heat up;
S72, after temperature stabilization, the half-finished parts completing spinning is slowly delivered to the flat-temperature zone of nitrate groove;
S73, timing from during half-finished parts arrival flat-temperature zone, insulation 55min;
After S74, temperature retention time reach, part is tilted 5 ° within 40s and enter water, enter water speed and control at 0.4m/s.
[embodiment 4]:
As depicted in figs. 1 and 2, the bent bus type revolving parts of large thick-wall aluminum alloy comprises the following steps without mould spinning process:
S1, preform: according to detail drawing determination blank diameter, choose blank, and process fillet, adopt deep-drawing technique that blank is carried out preform;
S2, revolve a time: the movement locus of setting spinning roller and format roll, setting feed ratio be 2.53, volume under pressure is 0.7mm, dislocation apart from being 125mm for 32mm, deflection, the product after preform is carried out spinning;
S3, annealing one: it comprises following sub-step:
S31, unlatching annealing furnace, be set as 483 DEG C by annealing temperature, then start to heat up;
S32, after temperature stabilization, will the half-finished parts after a time revolved slowly deliver to the flat-temperature zone of annealing furnace;
S33, timing from during half-finished parts arrival flat-temperature zone, insulation 295min;
After S34, annealing time reach, part to be come out of the stove air cooling with fork truck when being cooled to 260 DEG C with the cooldown rate of 19 DEG C/h;
S4, revolve two passages: the movement locus of setting spinning roller and format roll, and set that feed ratio is 2.73, volume under pressure is 1.3mm, dislocation apart from being 128mm for 29mm, deflection, the part of annealed is carried out second time spinning;
S5, annealing two: repeat step S3;
Correction is revolved in S6, school: the part after second time annealing is carried out school and revolves correction, make part meet dimension precision requirement;
S7, quenching, school shape: Quenching Treatment is carried out to part, and correct shape process within 30min, obtain finished product.
In described step S7, quenching technical comprises following sub-step:
S71, unlatching nitrate groove, be set as 498 DEG C by hardening heat, then start to heat up;
S72, after temperature stabilization, the half-finished parts completing spinning is slowly delivered to the flat-temperature zone of nitrate groove;
S73, timing from during half-finished parts arrival flat-temperature zone, insulation 48min;
After S74, temperature retention time reach, part is tilted 9 ° within 40s and enter water, enter water speed and control at 0.28m/s.
Claims (1)
1. the bent bus type revolving parts of large thick-wall aluminum alloy is without mould spinning process, it is characterized in that: it comprises the following steps:
S1, preform: according to detail drawing determination blank diameter, choose blank, and process fillet, adopt deep-drawing technique that blank is carried out preform;
S2, revolve a time: the movement locus of setting spinning roller and format roll, setting feed ratio be 2.5 ~ 2.7, volume under pressure is 0 ~ 1 mm, dislocation apart from be 28 ~ 35mm, deflection is less than 140mm, and the product after preform is carried out spinning;
S3, annealing one: it comprises following sub-step:
S31, unlatching annealing furnace, be set as 470 DEG C ~ 500 DEG C by annealing temperature, then start to heat up;
S32, after temperature stabilization, will the half-finished parts after a time revolved slowly deliver to the flat-temperature zone of annealing furnace;
S33, timing from during half-finished parts arrival flat-temperature zone, insulation 280min ~ 320min;
After S34, annealing time reach, part to be come out of the stove air cooling with fork truck when being cooled to 260 DEG C with the cooldown rate of 18 DEG C/h ~ 22 DEG C/h;
S4, revolve two passages: the movement locus of setting spinning roller and format roll, and set that feed ratio is 2.6 ~ 2.8, volume under pressure is 1 ~ 2mm, dislocation apart from be 26 ~ 30mm, deflection is less than 140mm, and the part of annealed is carried out second time spinning;
S5, annealing two: repeat step S3;
Correction is revolved in S6, school: the part after second time annealing is carried out school and revolves correction, make part meet dimension precision requirement;
S7, quenching, school shape: Quenching Treatment is carried out to part, and correct shape process within 30min, obtain finished product, described Quenching Treatment comprises following sub-step:
S71, unlatching nitrate groove, be set as 490 DEG C ~ 510 DEG C by hardening heat, then start to heat up;
S72, after temperature stabilization, the half-finished parts completing spinning is slowly delivered to the flat-temperature zone of nitrate groove;
S73, timing from during half-finished parts arrival flat-temperature zone, insulation 45min ~ 55min;
After S74, temperature retention time reach, within 40s, part is tilted 5 ° ~ 10 ° and enter water, enter water speed and control at 0.2m/s ~ 0.4m/s.
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| CN106392499A (en) * | 2016-12-02 | 2017-02-15 | 中国航天科技集团公司长征机械厂 | Equal-wall thickness curve generatrix part precise molding method |
| CN112247483B (en) * | 2020-09-28 | 2022-03-25 | 天津航天长征火箭制造有限公司 | Spinning method of workpiece with 2195 aluminum-lithium alloy special-shaped cross section structure |
| CN112170606B (en) * | 2020-11-10 | 2021-12-28 | 中南大学 | Spinning method of thin-wall end socket with large depth-diameter ratio |
| CN112958682B (en) * | 2021-02-20 | 2022-07-08 | 沈阳航空航天大学 | Near-equal-thickness die-free spinning method for convex bus revolving body thin-walled part |
| CN113547022A (en) * | 2021-06-07 | 2021-10-26 | 浙江蓝箭航天空间科技有限公司 | Thermal punching and spinning composite forming process for bottom of rocket fuel storage tank with large diameter-thickness ratio |
| CN113369362B (en) * | 2021-06-07 | 2022-08-30 | 四川航天长征装备制造有限公司 | Method for forming cover for spaceflight |
| CN113894198B (en) * | 2021-09-29 | 2023-09-26 | 中国航发动力股份有限公司 | Multi-pass flaring spin forming process for high-temperature alloy cylindrical part |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101653901A (en) * | 2009-09-15 | 2010-02-24 | 丁松伟 | Swaging manufacturing method of light aluminum alloy rim |
| CN102560298A (en) * | 2012-02-29 | 2012-07-11 | 天津锐新昌轻合金股份有限公司 | Heat treatment method particularly applicable to spinning plastic forming of aluminum alloy extruded tube |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101653901A (en) * | 2009-09-15 | 2010-02-24 | 丁松伟 | Swaging manufacturing method of light aluminum alloy rim |
| CN102560298A (en) * | 2012-02-29 | 2012-07-11 | 天津锐新昌轻合金股份有限公司 | Heat treatment method particularly applicable to spinning plastic forming of aluminum alloy extruded tube |
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