CN108580764A - A kind of precision form processing technology of aero-engine special alloy casing ring forging - Google Patents
A kind of precision form processing technology of aero-engine special alloy casing ring forging Download PDFInfo
- Publication number
- CN108580764A CN108580764A CN201810168724.5A CN201810168724A CN108580764A CN 108580764 A CN108580764 A CN 108580764A CN 201810168724 A CN201810168724 A CN 201810168724A CN 108580764 A CN108580764 A CN 108580764A
- Authority
- CN
- China
- Prior art keywords
- ring forging
- rolling
- casing ring
- rotating speed
- special alloy
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
Abstract
The present invention proposes a kind of precision form processing technology of aero-engine special alloy casing ring forging, carries out radial rolling to ring by the driven roller of machine for rolling ring and the core roller of active rotation, which includes the following steps：A. according to casing ring forging product size, the rolling ratio of casing ring forging is determined, to obtain preform ring forging size；B. deflection as needed and driven roller rotating speed determine rolling feed speed and core roller rotating speed；C. it is rolled according to the driven roller rotating speed of setting and rolling feed speed and core roller rotating speed.This method can be on the basis of existing special alloy casing ring forging precision, i.e. in the case where casing ring thickness is smaller, it further decreases ring forging wall thickness and improves shear deformation, achieve the effect that recrystallization softening crystal grain and precision form, to increase substantially the interior tissue uniformity and stock utilization of rolling special alloy casing ring forging.
Description
Technical field
The invention belongs to the technical field of the precision form of special alloy casing ring forging processing more particularly to a kind of aviations
The precision form processing technology of engine special alloy casing ring forging.
Background technology
Casing is the pedestal of aircraft engine, is the primary structure and primary load bearing component of entire engine, and type is more, shape
Shape is complicated, and processing flow is long, and manufacture difficulty is big, to the powerful counter-force of high-speed flow after resisting at work, while also wanting
Long-time High Temperature And Velocity gas shock is born, live load shows as heavy duty and transient load.Therefore, casing must have anti-
Croop property and anti-high-speed impact property.The air market of domestic and international high speed development has low cost, highly reliable casing compels very much
The demand cut.
The production of China's casing at present, mainly using the nearly rectangle looping mill rolling-follow-up machine of heat treatment-of special alloy jumping-up-punching-
The stock utilization of the technical process such as processing, rolling casing ring forging to part only has 3.3%.It is needed in casing manufacturing process big
Amount machining, wastes lot of materials, significantly increases Master Cost and process-cycle；And largely machining destroys metal
Streamline compromises properties of product.Develop casing precision form processing technology, realize special alloy casket ring forging precision ring forging at
Shape, and then increase substantially performance, reduce allowance, improve stock utilization and reduce manufacturing cost, become China spy
Kind alloy casing batch production keeps the unique channel of competitiveness.
Invention content
Technical problem to be solved by the present invention lies in view of the above problems, providing, a kind of aero-engine is extraordinary
The precision form processing technology of alloy casing ring forging, the process increase substantially rolling special alloy casing ring forging
Interior tissue uniformity and stock utilization, suitable for steadily produce in enormous quantities have excellent performance, the special alloy machine of long lifespan
Casket ring-shaped work pieces.
Technical solution is used by the present invention solves above-mentioned technical problem：A kind of aero-engine special alloy casing ring
The precision form processing technology of forging, which is characterized in that include the following steps：
S1) according to casing ring forging product size, the rolling ratio of casing ring forging is determined, to obtain preform ring forging
Size；
S2) deflection as needed and driven roller rotating speed determine rolling feed speed and core roller rotating speed；
S3) according to the driven roller rotating speed of setting and rolling feed speed and core roller rotating speed, preform ring forging is carried out
Rolling, obtains the casing ring forging of nearly end form.
By said program, the step S1) include following content：
S11 rolling) is chosen than λ, for special alloy according to the plastic deformation ability of material and precision rolling degree first
Hot rolling processing, λ choose 1.05~1.3；
S12) according to special alloy casing ring forging size, the size of preform ring forging is determined by following formula：
Wherein, D, d are the equivalent outer diameter and internal diameter of casing ring forging, D0,d0For the equivalent outer diameter of preform ring forging and interior
Diameter.
By said program, the step S2) include following content：
S21) using giving under appointed condition, the feed of every rotation calculating of ring rolling is as follows：
In formula, Δ hpFor feed of every rotation, P is the roll-force of rolling equipment, σsFor the surrender of casing material under rolling temperature
Intensity, b are casing ring axial height, D1,D2Respectively the equivalent operation outer diameter of driven roller and core roller, n are coefficient, and value is
3~6；
S22 rolling feed speed) is determined according to preform ring forging size, feed of every rotation and intended deformations amount：
Wherein, n1For driven roller rotating speed, η is coefficient of indentation, is taken as 1/ λ；
S23) according to rolling feed speed and driven roller rotating speed, it is as follows to determine that matching core roller velocity of rotation calculates：
Wherein, t is rolling time variable, and ξ is velocity coeffficient, and value range is 0.1~0.3.
The beneficial effects of the invention are as follows：It is proposed a kind of precision form processing of aero-engine special alloy casing ring forging
Technique, the technique mainly carry out radial rolling by the core roller of the driven roller of machine for rolling ring and active rotation to ring, and ring is being driven
Under the collective effect of dynamic roller torque and core roller torque, continuous rotation simultaneously generates plastic deformation, the surfaces externally and internally of ring respectively by
The effect of the torque of core roller and driven roller torque, the surfaces externally and internally stress of ring is opposite, deformed area " being elongated shearing ", can be existing
On the basis of having special alloy casing ring forging precision, i.e., in the case where casing ring thickness is smaller, further decrease ring forging
Part wall thickness and raising shear deformation, achieve the effect that recrystallization softening crystal grain and precision form, to increase substantially rolling
The interior tissue uniformity and stock utilization of special alloy casing ring forging, (by mark casing part stock utilization from
3.3% is increased to 5% or more).Suitable for steadily produce in enormous quantities have excellent performance, the special alloy casing annular zero of long lifespan
Part.
Description of the drawings
Fig. 1 is the rolling schematic diagram of the casing ring forging of one embodiment of the invention.
Fig. 2 is the structural schematic diagram of the preform ring forging of one embodiment of the invention.
Fig. 3 is the structural schematic diagram of the casing ring forging of one embodiment of the invention.
Wherein：1. driven roller, 2. core rollers, 3. guide rollers, 4. preform ring forgings, 5. casing ring forgings
Specific implementation mode
To more fully understand the present invention, the invention will be further described with reference to the accompanying drawings and examples.
As shown in Figs. 1-3, a kind of precision form processing technology of aero-engine special alloy casing ring forging, the technique
Radial rolling is mainly carried out to ring by the core roller 2 of the driven roller of machine for rolling ring 1, guide roller 3 and active rotation, which includes
Following steps：A. according to casing ring forging product size, the rolling ratio of casing ring forging is determined, to obtain preform ring forging
4 size；B. deflection as needed and driven roller rotating speed determine rolling feed speed and core roller rotating speed；C. according to setting
Driven roller rotating speed and rolling feed speed and core roller rotating speed, preform ring forging is rolled, the machine of nearly end form is obtained
Casket ring forging 5.
The computational methods of the preform ring forging size are：
A. rolling is chosen than λ, for special alloy heat according to the plastic deformation ability of material and precision rolling degree first
State rolling processing, λ can generally choose 1.05-1.3；
B. according to special alloy casing ring forging size, the size of preform ring forging is determined by following formula,
In formula, D, d are the equivalent outer diameter and internal diameter of casing ring forging, D0,d0For the equivalent outer diameter of preform ring forging and interior
Diameter.
The computational methods of the determination core roller rotating speed are：
A. using giving under appointed condition, the feed of every rotation calculating of ring rolling is as follows,
In formula, Δ hpFor feed of every rotation, P is the roll-force of rolling equipment, σsFor the surrender of casing material under rolling temperature
Intensity, b are ring axial height, D1,D2The respectively equivalent operation outer diameter of driven roller and core roller, n are coefficient, value 3-6；
B. rolling feed speed is determined according to preform ring forging size, feed of every rotation and intended deformations amount,
In formula, n1For driven roller rotating speed, η is coefficient of indentation, generally takes 1/ λ；
C. according to rolling feed speed and driven roller rotating speed, it is as follows to determine that matching core roller velocity of rotation calculates,
In formula, t is rolling time variable, and ξ is velocity coeffficient, is taken as 0.2 here.
Preform ring forging can be obtained by traditional rolling mill practice, and general precision is also adopted on this basis 2% or so
It causes to recrystallize insufficient influence subsequent heat treatment intensity with traditional forming technology or deflection deficiency or keeps having
Heat deformable state directly carries out subsequent heat treatment and causes stock utilization low.By above-mentioned technique, can ring forging wall thickness
In the case of smaller, still generate moderate finite deformation amount and promote recrystallization softening crystal grain, and reach 3 ‰ or more ring forging ruler
Very little precision makes stock utilization improve 30% or more, achievees the effect that casing part material overall utilization 5%.
In conclusion this method is had excellent performance suitable for steadily mass production, the special alloy casing ring of long lifespan
Forging.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (3)
1. a kind of precision form processing technology of aero-engine special alloy casing ring forging, which is characterized in that including as follows
Step：
S1) according to casing ring forging product size, the rolling ratio of casing ring forging is determined, to obtain preform ring forging ruler
It is very little；
S2) deflection as needed and driven roller rotating speed determine rolling feed speed and core roller rotating speed；
S3) according to the driven roller rotating speed of setting and rolling feed speed and core roller rotating speed, preform ring forging is rolled,
Obtain the casing ring forging of nearly end form.
2. a kind of precision form processing technology of aero-engine special alloy casing ring forging according to claim 1,
It is characterized in that, the step S1) include following content：
S11 it) is chosen and is rolled than λ according to the plastic deformation ability of material and precision rolling degree first, it is hot for special alloy
Rolling processing, λ choose 1.05~1.3；
S12) according to special alloy casing ring forging size, the size of preform ring forging is determined by following formula：
Wherein, D, d are the equivalent outer diameter and internal diameter of casing ring forging, D0,d0For the equivalent outer diameter and internal diameter of preform ring forging.
3. a kind of precision form processing technology of aero-engine special alloy casing ring forging according to claim 2,
It is characterized in that, the step S2) include following content：
S21) using giving under appointed condition, the feed of every rotation calculating of ring rolling is as follows：
In formula, Δ hpFor feed of every rotation, P is the roll-force of rolling equipment, σsSurrender for casing material under rolling temperature is strong
Degree, b are casing ring axial height, D1,D2The respectively equivalent operation outer diameter of driven roller and core roller, n are coefficient, value is 3~
6；
S22 rolling feed speed) is determined according to preform ring forging size, feed of every rotation and intended deformations amount：
Wherein, n1For driven roller rotating speed, η is coefficient of indentation, is taken as 1/ λ；
S23) according to rolling feed speed and driven roller rotating speed, it is as follows to determine that matching core roller velocity of rotation calculates：
Wherein, t is rolling time variable, and ξ is velocity coeffficient, and value range is 0.1~0.3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810168724.5A CN108580764A (en) | 2018-02-28 | 2018-02-28 | A kind of precision form processing technology of aero-engine special alloy casing ring forging |
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| CN201810168724.5A CN108580764A (en) | 2018-02-28 | 2018-02-28 | A kind of precision form processing technology of aero-engine special alloy casing ring forging |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115519055A (en) * | 2022-09-21 | 2022-12-27 | 江苏翔能科技发展有限公司 | Method for determining rotating conditions of ring plate in rolling and spinning forming process |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101812614A (en) * | 2010-04-13 | 2010-08-25 | 宝钛集团有限公司 | Method for preparing aero-engine casing |
| CN102000752A (en) * | 2010-10-28 | 2011-04-06 | 武汉理工大学 | Bispherical ring rolling forming method |
| CN102688962A (en) * | 2012-05-08 | 2012-09-26 | 浙江天马轴承股份有限公司 | Symmetric rolling forming method of large inner-step ring parts |
| CN104588549A (en) * | 2014-11-29 | 2015-05-06 | 吉林大学 | Multi-ring roll-forming method for thin ring parts |
| CN105108016A (en) * | 2015-09-23 | 2015-12-02 | 武汉理工大学 | Radial rolling method for ring piece with controllable strain distribution |
| JP3206922U (en) * | 2016-07-29 | 2016-10-13 | 東洋産業株式会社 | Ring roll forming machine |
-
2018
- 2018-02-28 CN CN201810168724.5A patent/CN108580764A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101812614A (en) * | 2010-04-13 | 2010-08-25 | 宝钛集团有限公司 | Method for preparing aero-engine casing |
| CN102000752A (en) * | 2010-10-28 | 2011-04-06 | 武汉理工大学 | Bispherical ring rolling forming method |
| CN102688962A (en) * | 2012-05-08 | 2012-09-26 | 浙江天马轴承股份有限公司 | Symmetric rolling forming method of large inner-step ring parts |
| CN104588549A (en) * | 2014-11-29 | 2015-05-06 | 吉林大学 | Multi-ring roll-forming method for thin ring parts |
| CN105108016A (en) * | 2015-09-23 | 2015-12-02 | 武汉理工大学 | Radial rolling method for ring piece with controllable strain distribution |
| JP3206922U (en) * | 2016-07-29 | 2016-10-13 | 東洋産業株式会社 | Ring roll forming machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115519055A (en) * | 2022-09-21 | 2022-12-27 | 江苏翔能科技发展有限公司 | Method for determining rotating conditions of ring plate in rolling and spinning forming process |
| CN115519055B (en) * | 2022-09-21 | 2023-05-12 | 江苏翔能科技发展有限公司 | Method for determining rotation condition of ring disc in rolling and rotating forming process |
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Application publication date: 20180928 |
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