CN103962487B - A kind of large-scale solid forging metal framework of band ear block and preparation method thereof - Google Patents
A kind of large-scale solid forging metal framework of band ear block and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to large-scale solid forging metal framework of a kind of band ear block and preparation method thereof, be particularly well-suited to the difficult-to-deformation materials such as titanium alloy.It passes through (1) base；(2) blocking；(3) pre-forging stock finishing；(4) whole die forging shaping, obtains the large-scale solid forging metal framework of band ear block.The present invention uses V-arrangement famine base method for designing, can preferably be full of die cavity, solves a metal large-scale frame mould forging forming difficult problem for band ear block, and the preparation of V-arrangement famine base is simple, good forming effect.This forging is mainly used in the industrial circle such as Aeronautics and Astronautics, petrochemical industry.
Description
Technical field
The present invention relates to a kind of large-scale solid forging metal framework and technology of preparing thereof, particularly to band ear
Large-scale solid forging metal framework of block and preparation method thereof, is particularly suited for titanium alloy large-sized component system
Standby, it is possible to be applied to aluminium alloy or other materials high to overall performance requirement, belong to material science skill
Art field.
Background technology
Forging is that metal is pressurized, and is moulded by plastic deformation and obtains the shape of requirement or suitable
The object of compression stress.Metal can improve its organizational structure and mechanical property after forging processing, forging
Make processing and can guarantee that the seriality of metal fibrous tissue, make the fibrous tissue of forging keep with forging profile
Unanimously, metal streamline is complete, it is ensured that forging parts has good mechanical property and long use longevity
Life.Cast sturcture due to deformation and the recrystallization of metal, makes former after forging method thermal processing distortion
The large dendritic crystal and the columnar grain that come become crystal grain isometry recrystallized structure thinner, of uniform size, make
Compacting and the seam such as original segregation in ingot casting, loose, pore, slag inclusion, its tissue becomes more to step up
Close, improve plasticity and the mechanical property of metal.Forging does not has any porous, redundant space, interior
Inclusion or other flaw.The part that this method produces, intensity and weight ratio have a high ratio.
So, forging is normally used in aircaft configuration.
Calculate by weight, aircraft has about 85% component be forging.The turbine of aircraft engine
Dish, rear shaft neck (hollow axle), blade, the spar of wing, rib plate, the wheel support of fuselage, rise and fall
The inside and outside cylinders of frame etc. all relate to the important forging of aircraft safety.The multiplex high-strength abrasion-proof of aircraft forging,
The precious materials manufactures such as anti-corrosion aluminium alloy, titanium alloy, nickel-base alloy.Forging, the most large-scale frame
Frame forging is extensively applied at engineering fields such as Aeronautics and Astronautics.As large-scale framework forging is used for aircraft
Fuselage etc., its dimensions is typically greater than 1 meter.
Traditional large-scale frame class method for manufacturing parts is to use some Forging Pieces to be welded, component system
Need multiple operations such as welding, machining, Non-Destructive Testing, heat treatment during making and repeatedly could
Completing, process-cycle length, quality stability are the highest.Simultaneously as the heterogeneous feature of weld seam, weldering
Seam periphery corrosion-resistant, structural safety reliability are low, and therefore, maximization, integration are that forging is sent out
One of exhibition trend.
But along with forging increases, how to keep the uniformity of structure property to become again technological difficulties.Requirement
First the high-quality of forging structure property and homogenization must require the crystal grain of forging stock tiny and even tissue,
Forging quality to be ensured, first must guarantee forging stock quality, in other words, just need to will forge before forging forming
Base structure property reach to shape after the level of forging.
During the maximization integration of forging, for the frame shape of symmetrical or near symmetry, permissible
Suppressed by biscuit or expanding method is prepared from.But for band ear block or asymmetrical large-scale overall frame,
Typical frame as large-scale in aviation component, its contour dimension is more than 1m × 1m, such as 1528mm × 1352mm.
Owing to upper end and right-hand member have " the ear block " stretched out, there is the hole of diameter about 1m in heart portion, uses conventional cake
Base compacting or the forging method of reaming, then there is " misrun " in ear block etc., is i.e. not fully filled phenomenon.
Prior art cannot solve the forging of the large-scale overall frame component of band ear block always, in prior art
The manufacture method of asymmetric part once occurred, but with the means that present invention solves the technical problem that and use
Entirely different.
Once having the mode of the open integral extrusion forming of document, but use extrusion process, needing first will extruding
Blank cuts into the inclined-plane that thickness is different, then regulates gap to obtain Non-symmetric Extrusion part.This area is public
Knowing, Forging Technology stress and mode of texturing are relatively big, for large component, resistance of deformation with extruding difference
Big metal, fashion of extrusion is the most applicable.
" rare metal ", in May, 2012, the 2nd phase of volume 36, article " titanium alloy complex member
Study on Isothermal Forging Process " disclose a kind of method that isothermal forging prepares complex component, but with this
The frame class part problem of bright solution is different, and first blank design is different, and secondly in article, forging forming needs
Being aided with machining and forging is carried out thickness process, the present invention is only with forging method.The most above-mentioned two
Problem and the means of employing that individual documents solves with the present invention the most do not have comparability.
Present invention aim to address the blank design of band ear block entirety frame, forging stock prepare, forging forming
Problem.Use and forge with ear block angle corresponding wide-angle V-arrangement famine base, solve above-mentioned large-scale
The forging and molding problem of solid forging；Further, by V-arrangement famine base is carried out isothermal base, etc.
Warm forging is made, and the Accurate Shaping and the structure property uniformity that preferably solve above-mentioned large-scale solid forging are asked
Topic.Use the inventive method only can complete whole forging forming process by 2～3 fire, be greatly shortened
Operation, improve stock utilization.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the invention provides a kind of band ear block large-scale
Solid forging metal framework and preparation method thereof, wherein, framework one forging and molding, it is not necessary to division system
Make；Further, the having good uniformity of this framework global tissue performance.
By the method for V-arrangement blank design, the problems referred to above can be solved well.
Further, congruence warm working (the pre-forging stock of isothermal+isothermal finish-forging is used for V-arrangement blank
Part) so that large-scale solid forging framework can Accurate Shaping, there is good structure property uniformity.
In order to solve aforementioned technical problem, reach above-mentioned technique effect, the invention provides following skill
Art scheme:
The large-scale solid forging metal framework of a kind of band ear block, wherein, frame outline size is more than
1m × 1m, whole framework one forging and molding, it is not necessary to reaming and sectional making.
Additionally, present invention also offers the preparation side of the large-scale solid forging metal framework of a kind of band ear block
Method, comprises the following steps:
(1) V-arrangement famine base base: blanking, obtains slab in uniform thickness, by applying on slab
Pressure prepares V-arrangement famine base, and pressure acts on the bottom corresponding to V-arrangement, wherein, V-arrangement famine base
Angle and development length are determined by the angle between ear block and size.
(2) V-arrangement famine base blocking: prepared V-arrangement famine base is put into mould and forges, V-arrangement famine base
Extension edge corresponding to the ear block of framework；After forging, the extension edge of V-arrangement famine base forms ear block part,
Remainder forms chassis body.
(3) pre-forging stock finishing: remove the hole portion material in the middle part of pre-forging stock.
(4) whole die forging shaping: the frame mold putting into final shaping is forged, and is carried
The large-scale solid forging metal framework of ear block.The large-scale solid forging of the band ear block prepared by said method
Metal framework, framework one forging and molding, it is not necessary to reaming and sectional making.
In order to obtain more preferable structure property, it is preferable that can be by described V-arrangement famine base by phase transformation
Point below T β 20～40 DEG C of isothermal blockings realize the reasonable distribution of metal, form structure property and carry uniformly
The large-scale outling of truss of ear block.
It is highly preferred that pre-forging stock after finishing by forcing press at below transformation temperature T β 20～40 DEG C etc.
Temperature die forging obtains accurate finish-forging part；It is further preferred that isothermal forging mould K3 high temperature alloy casts
Process.
Preferably, original material is bar, and blanking after bar upsetting pull is obtained slab in uniform thickness,
Preparing V-arrangement famine base by applying pressure on slab, during hydraulic press upsetting pull blank, often fire deflection is
30～50%, or when open die forging upsetting pull blank often fire deformation amount controlling 15～40%.Preferably, upsetting
When pulling out blank, base temperature controls below transformation temperature T β 25～40 DEG C.
It is highly preferred that air-cooled after described whole forging forming, then, finish-forging part Technology for Heating Processing is common
Annealing, air cooling.
Preferably, metal can be aluminium alloy, titanium alloy or nickel-base alloy etc..
Compared with prior art (Forging Pieces welding or reaming), beneficial effects of the present invention is as follows:
The manufacture method some Forging Pieces of many employings of this kind of large-scale FRAME COMPONENTS are welded by prior art
Form, component manufacture process needs multiple operations such as welding, machining, Non-Destructive Testing, heat treatment
And repeat above operation and just can complete, process-cycle length, quality stability are the highest.Reaming can only solve
Manufacture without the symmetry framework of ear block.The present invention breaches the large complicated whole frame of band ear block and becomes die forging
The multinomial key technology made, reaches the technical conditions of fine forge piece, solves above-mentioned large-scale solid forging
Accurate Shaping and structure property homogeneity question, only can complete whole forging forming by 2～3 fire
Process, substantially reduces operation, improves stock utilization.
Accompanying drawing explanation
Fig. 1 is the V-arrangement famine base of the band large-scale metal solid forging framework of band ear block.
Fig. 2 is the pre-forging stock shape of the band large-scale metal solid forging framework of band ear block.
Fig. 3 is the pre-forging after the finishing of the band large-scale metal solid forging framework of band ear block.
Fig. 4 is the finish-forging part net shape of the band large-scale metal solid forging framework of band ear block.
Detailed description of the invention
Hereinafter the preferred embodiments of the present invention are illustrated, it will be appreciated that described herein preferably
Embodiment is merely to illustrate and explains the present invention, is not intended to limit the present invention.
Below in conjunction with accompanying drawing, one embodiment of the present of invention is described.Frame outline size
1528mm×1352mm.The system of the TA15 titanium alloy large-sized framework die forging component of upper end and right-hand member band ear block
Preparation Method is as follows:
(1) V-arrangement famine base base: selecting the bar of diameter of phi 400mm, after upsetting pull, blanking obtains thickness
Uniform slab, prepares V-arrangement famine base by applying pressure on slab, pressure act on corresponding to
The bottom of V-arrangement, wherein, the angle between angle and development length with the ear block of V-arrangement famine base and size phase
Should.Upsetting pull blank uses open die forging, carries out on 5 tons of flat-die hammers.Or upsetting pull blank uses 50MN
Hydraulic press is carried out.The base temperature of upsetting pull blank controls at 960 DEG C, and transformation temperature is 990 DEG C.First make
For going out V-arrangement famine base.
(2) V-arrangement famine base blocking: prepared V-arrangement famine base is put into mould and forges, V-arrangement famine base
Extension edge corresponding to the ear block of framework；After forging, the extension edge of V-arrangement famine base forms ear block part,
Remainder forms chassis body.V-arrangement famine base is again by 965 DEG C of blockings, it is achieved rationally dividing of metal
Join, form the large-scale outling of truss of band ear block, it is not necessary to reaming and sectional making.
(3) pre-forging stock finishing: remove the hole portion material in the middle part of pre-forging stock.
(4) whole die forging shaping: the frame mold putting into final shaping is forged, and is carried
The large-scale solid forging metal framework of ear block.Isothermal forging mould is with the casting processing of K3 high temperature alloy
Becoming, isothermal temperature is still at 965 DEG C, and die forging obtains accurate finish-forging part, carries out heat treatment subsequently.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, it is not used to
Limit the present invention, although the present invention being described in detail with reference to previous embodiment, for ability
For the technical staff in territory, the technical scheme described in foregoing embodiments still can be repaiied by it
Change, or wherein portion of techniques feature is carried out equivalent.All the spirit and principles in the present invention it
In, any modification, equivalent substitution and improvement etc. made, should be included in protection scope of the present invention
Within.
Claims (15)
1. the preparation method of the large-scale solid forging metal framework of a band ear block, it is characterised in that this framework is with one
The ear block shaped, comprises the following steps:
(1) V-arrangement famine base base: blanking, obtains slab in uniform thickness, prepares V by applying pressure on slab
Shape famine base, pressure acts on the bottom corresponding to V-arrangement, wherein, between the angle of V-arrangement famine base and development length are by ear block
Angle and size determine；
(2) V-arrangement famine base blocking: prepared V-arrangement famine base is put into mould and carries out forging and obtain pre-forging stock, V-arrangement famine base
Extension edge is corresponding to the ear block of large-scale solid forging metal framework；After forging, the extension edge of V-arrangement famine base forms ear block part,
Remainder forms large-scale solid forging metal framework main body；
(3) pre-forging stock finishing: remove the hole portion material in the middle part of pre-forging stock；
(4) whole die forging shaping: put into frame mold and carry out forging and molding, obtains the large-scale solid forging gold of band ear block
Belong to framework, whole framework one forging and molding.
The preparation method of the large-scale solid forging metal framework of a kind of band ear block the most according to claim 1, its feature
It is, V-arrangement famine base is carried out isothermal blocking.
The preparation method of the large-scale solid forging metal framework of a kind of band ear block the most according to claim 2, its feature
It is, by transformation temperature Tβ20～40 DEG C of isothermal blockings realize the reasonable distribution of metal below, form structure property equal
The large-scale outling of truss of even band ear block.
4. according to the preparation method of the large-scale solid forging metal framework of the arbitrary described a kind of band ear block of claim 1-3,
It is characterized in that, the pre-forging stock after finishing obtains accurate finish-forging part by isothermal die forging process.
The preparation method of the large-scale solid forging metal framework of a kind of band ear block the most according to claim 4, its feature
Being, the pre-forging stock after finishing is by transformation temperature Tβ20～40 DEG C of isothermal die forging process obtain accurate finish-forging part below.
6. according to the preparation method of the large-scale solid forging metal framework of a kind of band ear block described in Claims 2 or 3, its
Being characterised by, the casting of isothermal blocking mould therefor K3 high temperature alloy processes.
7. according to claim 1-3, the preparation side of the large-scale solid forging metal framework of 5 arbitrary described a kind of band ear blocks
Method, it is characterised in that original material is bar, obtains slab in uniform thickness by blanking after bar upsetting pull, by plate
Apply pressure on base and prepare V-arrangement famine base.
The preparation method of the large-scale solid forging metal framework of a kind of band ear block the most according to claim 7, its feature
Being, upsetting pull blank is carried out on hydraulic press or flat-die hammer.
The preparation method of the large-scale solid forging metal framework of a kind of band ear block the most according to claim 8, its feature
Being, during hydraulic press upsetting pull blank, often fire deflection is 30～50%, or the often fire deflection control when open die forging upsetting pull blank
System is 15～40%.
The preparation method of the large-scale solid forging metal framework of a kind of band ear block the most according to claim 7, it is special
Levying and be, during upsetting pull blank, base temperature controls in transformation temperature Tβ25～40 DEG C below.
11. according to claim 1-3,5, the large-scale solid forging metal framework of the arbitrary described a kind of band ear block of 8-10
Preparation method, it is characterised in that air-cooled after described whole forging forming, then, finish-forging part Technology for Heating Processing is common annealing,
Air cooling.
The preparation method of the large-scale solid forging metal framework of 12. a kind of band ear blocks according to claim 4, it is special
Levying and be, air-cooled after described whole forging forming, then, finish-forging part Technology for Heating Processing is common annealing, air cooling.
The preparation method of the large-scale solid forging metal framework of 13. a kind of band ear blocks according to claim 7, it is special
Levying and be, air-cooled after described whole forging forming, then, finish-forging part Technology for Heating Processing is common annealing, air cooling.
14. according to claim 1-3,5, the large-scale solid forging gold of the arbitrary described a kind of band ear block in 8-10,12,13
Belong to the preparation method of framework, it is characterised in that metal is aluminium alloy, titanium alloy or nickel-base alloy.
The preparation method of the large-scale solid forging metal framework of 15. a kind of band ear blocks according to claim 11, it is special
Levying and be, metal is aluminium alloy, titanium alloy or nickel-base alloy.
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Families Citing this family (9)
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| CN105728612A (en) * | 2014-12-12 | 2016-07-06 | 陕西宏远航空锻造有限责任公司 | Forging method of large titanium alloy frame class precision forge piece for aviation aircraft |
| CN104525810B (en) * | 2014-12-22 | 2016-03-23 | 西安西工大超晶科技发展有限责任公司 | The hot precision die-forging forming technique of a kind of titanium alloy forging half |
| CN105215245B (en) * | 2015-10-16 | 2019-08-20 | 西安三角航空科技有限责任公司 | A kind of forging method of super large Type Titanium Alloy entirety frame forging |
| CN108526365B (en) * | 2018-05-30 | 2020-12-18 | 西安三角防务股份有限公司 | Forging forming method of large titanium alloy central part |
| CN109317590B (en) * | 2018-10-16 | 2020-05-19 | 中国航发南方工业有限公司 | Forming method of complex aluminum alloy casing forging |
| CN109570417A (en) * | 2018-11-23 | 2019-04-05 | 哈尔滨工业大学 | A kind of accurate forming method of aluminium alloy thin-walled curved surface muscle forging |
| CN113000756A (en) * | 2019-12-19 | 2021-06-22 | 宝武特种冶金有限公司 | Isothermal forging method of titanium alloy case forging |
| CN111804885A (en) * | 2020-07-09 | 2020-10-23 | 科曼车辆部件系统(苏州)有限公司 | Liquid die forging forming process for aluminum alloy automobile hub |
| CN112496217A (en) * | 2020-11-16 | 2021-03-16 | 中国第二重型机械集团德阳万航模锻有限责任公司 | Integral forming method for high-temperature titanium alloy frame die forging |
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Address after: 100095 Beijing 81 Mailbox Patentee after: China Hangfa Beijing Institute of Aerial Materials Address before: 100095 Beijing No. 81 Mailbox Patentee before: Beijing Institute of Aeronautical Materials, China Aviation Industry Group Corporation |