CN104438419B - A kind of forging molding process of high tubular aluminum alloy forge piece - Google Patents
A kind of forging molding process of high tubular aluminum alloy forge piece Download PDFInfo
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- CN104438419B CN104438419B CN201410573288.1A CN201410573288A CN104438419B CN 104438419 B CN104438419 B CN 104438419B CN 201410573288 A CN201410573288 A CN 201410573288A CN 104438419 B CN104438419 B CN 104438419B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/06—Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/10—Piercing billets
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Abstract
Invention relates to the forging molding process of a kind of high tubular aluminum alloy forge piece, fully deform by using cross upsetting pull method on the one hand can enable aluminum alloy to blank in forging process, as-cast structure is made to become forging tissue, the anisotropy of aluminium alloy rings performance can be reduced furthermore with cross upsetting pull method, increase aluminium alloy rings and radially extend rate.The feed rate of Ring Rolling Machine time in forging process by changing rolling ring, on the one hand it is possible to prevent aluminum alloy forge piece overheated, additionally can also prevent end face peeling and the groove of aluminum alloy forge piece, additionally the heat treatment to aluminum alloy forge piece not only increases forging intensity, the strong words the most more small and dispersed distribution that additionally aluminum alloy forge piece separates out under this heat treatment temperature, reduce the participation stress of aluminum alloy forge piece, prevent follow-up machining distortion.
Description
Technical field
The present invention relates to Forging Technology, particularly relate to the forging molding process of a kind of high tubular aluminium alloy (2A14) forging.
Background technology
Aluminium alloy is a most widely used class non-ferrous metal structural material in industry, at Aeronautics and Astronautics, automobile, machinery
Manufacture, boats and ships and chemical industry are widely applied.At present in the forging process for high tubular aluminum alloy forge piece, owing to aluminum closes
Gold exists in heating process that deformation temperature range is narrow, sensitive to deformation temperature and deformation velocity, coefficient of friction big and mobility
Difference, inhomogeneous deformation can cause the local situation such as coarse-grain and forging sticking to mould, and the height of this high tubular aluminum alloy forge piece is
900mm, is therefore easily generated critical strain in forging process, easily produces critical strain, in ring rolling process in forging process
May cause unstability, ovalizing deflection, in heat treatment step, ring is easily deformed, finished product uneven microstructure and property after heat treatment
The problems such as energy anisotropy is big, substantially increase the production difficulty of aluminum alloy forge piece.
Summary of the invention
The applicant, for above-mentioned existing issue, has carried out Improvement, it is provided that the forging of a kind of high tubular aluminum alloy forge piece
Make moulding process, be effectively increased mouldability and the mechanical property of high tubular aluminum alloy forge piece, greatly reduce production difficulty.
The technical solution adopted in the present invention is as follows:
The forging molding process of a kind of high tubular aluminum alloy forge piece, comprises the following steps:
The first step: blanking: use aluminium cast bar is blank；
Second step: heating before forging: the first heating period: be placed in heating furnace by blank, make blank temperature be warming up to not
More than 300 DEG C；Second heating period: continue blank is warming up to 470 DEG C ± 5 from the outlet temperature of described first heating period
DEG C, it is incubated 22-28h；
3rd step: base: first stage: use cross upsetting pull method that heating gained blank upsetting pull is formed cake part；Second
Stage: be punched out described cake part forming the ring base with endoporus；The concrete punching process of described punching is as follows: first profit
With punching pin, cake part being gone out counterbore, the degree of depth of described counterbore is 20-50mm, and then the inwall at described counterbore uniformly brushes profit
Lubrication prescription, continues punching finally by punching pin to described counterbore, makes described counterbore form through hole, and the diameter of described counterbore is less than described
The diameter of through hole.
Further improvement as technique scheme:
4th step: melt down heating for the first time: heat in described ring base is reentered into heating furnace, make the temperature of ring base
Reach 470 DEG C ± 5 DEG C, be incubated 5-7h；
5th step: reaming: described ring base uses open die forging saddle support reaming preparation roll over ring ring base；
6th step: second time melts down heating: carry out in described rolling ring ring base is reentered into heating furnace being heated to 470 DEG C ±
5 DEG C, it is incubated 2-3h；
7th step: roll over ring: using Ring Rolling Machine that described rolling ring ring base carries out the system of rolling over and form aluminum alloy forge piece, Ring Rolling Machine is radially
Feed rate is 0.6～0.7mm/s, and during rolling ring, the surface of described aluminum alloy forge piece is constantly brushed with lubricant；
8th step: by the 9th step gained aluminum alloy forge piece air cooling to room temperature；
9th step: heat treatment: first stage: the aluminum alloy forge piece that temperature is room temperature is heated to 500 DEG C ± 5 DEG C, insulation
Solution heat treatment is carried out after 5-7h；Second stage: by horizontal type ring rolling machine looping mill rolling cold to the aluminum alloy forge piece after solid solution, the completeest
Become artificial aging heat treatment；ID distortion amount during the cold looping mill rolling of aluminum alloy forge piece is 0%～0.3%, the temperature of artificial aging heat treatment
Degree is 150～160 DEG C；
Tenth step: machining is to requiring size.
Its further technical scheme is:
The concrete jumping-up mode of cross jumping-up method described in the 3rd step first stage is as follows: first along Z axis by blank jumping-up shape
Become disk, then along X-axis by disk pulling formation rectangle blank, then rectangle blank is formed square base along X-axis jumping-up
Material, again pulls out square blank formation rectangle blank, then forms described rectangle blank along Z axis jumping-up along Z axis
Cake part；
Open die forging saddle support reaming described in 5th step uses the mandrel reaming in two times of different-diameter, reaming mandrel for the first time
Diameter less than second time reaming mandrel diameter；
The detailed process of the 9th step first stage solution heat treatment is as follows: it is 60～70 DEG C that aluminum alloy forge piece is put into water temperature
Water in solid solution, enabling aluminum alloy to the temperature after forging solid solution is 60～70 DEG C；
Described lubricant is mixed with Adeps Sus domestica by graphite.
Described lubricant is mixed with Adeps Sus domestica by graphite.
Beneficial effects of the present invention is as follows:
The inventive method uses cross upsetting pull method when base, on the one hand can enable aluminum alloy to blank and fully deform, make casting
State tissue becomes forging tissue, can reduce the anisotropy of aluminium alloy rings performance furthermore with cross upsetting pull method, increases aluminum
Alloy rings radially extends rate.
The inventive method when punching first with one counterbore of punching pin punching, by lubricating at counterbore inwall even application
At punching through hole after agent, effectively prevent from pulling endoporus when punch process.
The inventive method utilizes saddle support reaming and uses the mandrel punching in two times of different-diameter can be in the most anti-stop ring base
Wall leaves deeper hammering.
When rolling over ring by changing, the feed rate of Ring Rolling Machine, is on the one hand possible to prevent aluminum alloy forge piece overheated, additionally can also
Preventing end face peeling and the groove of aluminum alloy forge piece, additionally the heat treatment to aluminum alloy forge piece not only increases forging intensity, separately
The strong words the most more small and dispersed distribution that outer aluminum alloy forge piece separates out under this heat treatment temperature, reduces the ginseng of aluminum alloy forge piece
With stress, prevent follow-up machining distortion.
Accompanying drawing explanation
Fig. 1 is the temperature curve schematic diagram heated before forging in the present invention.
Fig. 2 is the schematic diagram of base process in the present invention.
Fig. 3 is the temperature curve schematic diagram melting down heating in the present invention for the first time.
Fig. 4 is the temperature curve schematic diagram that in the present invention, second time melts down heating.
Detailed description of the invention
Below in conjunction with the accompanying drawings, the detailed description of the invention of the present invention is described.
Embodiment 1:
The forging molding process of a kind of high tubular aluminum alloy forge piece comprises the following steps:
The first step: blanking: use aluminium cast bar is blank, a diameter of 680mm of this blank, height is 1400mm；
Second step: heating before forging: the first heating period: be placed in heating furnace by blank, make blank temperature be warming up to 290
℃；Second heating period: continue blank is warming up to 465 DEG C from the outlet temperature (290 DEG C) of described first heating period, insulation
22h.Before forging, the temperature curve of heating is as shown in Figure 1.
3rd step: base: as in figure 2 it is shown, the first stage: use cross upsetting pull method that heating gained blank upsetting pull is formed circle
Cake part；The concrete jumping-up mode of institute's cross jumping-up method is as follows: first along Z axis, blank jumping-up is formed disk, disk a diameter of
1000mm, height is for shown in 650mm(Fig. 2 a).Then along X-axis, disk pulling is formed rectangle blank, this rectangle blank
A length of 1370mm, width is 610mm, and height is for shown in 610mm(Fig. 2 b).Again rectangle blank is just formed along X-axis jumping-up
Stock of square, a length of 630mm of this square blank, width is 900mm, and height is for shown in 900mm(Fig. 2 c).By square
Blank again pulls out formation rectangle blank, a length of 1370mm of this rectangle blank along Z axis, and height is 610mm, and width is
Shown in 610mm(Fig. 2 d).Then to rectangle blank along Z axis jumping-up formed cake part, a diameter of 835mm of cake part, highly
Shown in 930mm(Fig. 2 e).Second stage: be punched out being formed with the ring base of endoporus to cake part, described punching concrete
Punching process is as follows: going out a deep 20mm counterbore first with punching pin, then the inwall at counterbore uniformly brushes lubricant, profit
Lubrication prescription is mixed with Adeps Sus domestica by graphite, finally by punching pin, counterbore is continued punching, makes counterbore form Φ 280 through hole (such as figure
Shown in 2f), the diameter of above-mentioned counterbore, less than the diameter of through hole, is first gone out counterbore and is effectively prevented from pulling endoporus during punching.
4th step: melt down heating for the first time: as it is shown on figure 3, heat in ring base is reentered into heating furnace, make ring base
Temperature reach 465 DEG C, be incubated 5h；
5th step: reaming: ring base uses open die forging saddle support reaming preparation roll over ring ring base, first uses Φ's 280 during reaming
Mandrel carries out saddle support reaming, and during saddle support to Φ 500, the mandrel of replacing Φ 400 carries out saddle support reaming anti-stop ring base inwall again has relatively
Deep hammering.The stability that postorder is rolled over ring has very great help.The size rolling over ring ring base after saddle support reaming is Φ 1500 × 1200
×930。
6th step: second time melts down heating: as shown in Figure 4, rolles over ring ring base by the 5th step gained and is reentered in heating furnace
Carry out being heated to 465 DEG C, be incubated 2h；
7th step: roll over ring: using Ring Rolling Machine that described rolling ring ring base carries out the system of rolling over and form aluminum alloy forge piece, Ring Rolling Machine is radially
Feed rate is 0.6mm/s, on the one hand forging can be prevented overheated by the radial feed speed adjusting Ring Rolling Machine, additionally can also prevent
Not-go-end face peeling and groove.During rolling ring, the surface of described aluminum alloy forge piece is constantly brushed with lubricant, rolles over this aluminium alloy after ring
The size of forging is Φ 2050 × Φ, 1840 × 930(race diameter/inner ring diameter/highly).
8th step: by the 9th step gained aluminum alloy forge piece air cooling to room temperature；
9th step: heat treatment: first stage: the aluminum alloy forge piece that temperature is room temperature is heated to 495 DEG C, 5h is laggard in insulation
Row solution heat treatment, the detailed process of solution heat treatment is as follows: aluminum alloy forge piece is put into solid solution in the water that water temperature is 60 DEG C, makes
Temperature after aluminum alloy forge piece solid solution is 60 DEG C.
Second stage: by horizontal type ring rolling machine looping mill rolling cold to the aluminum alloy forge piece after solid solution, aluminum alloy forge piece during cold looping mill rolling
Deflection be 0.1%, finally complete artificial aging heat treatment, the temperature of artificial aging heat treatment is 150 DEG C.
Tenth step: machine to requiring size Φ 1980* Φ 1800*930(outside dimension, internal diameter size, highly).
Embodiment 2:
The forging molding process of a kind of high tubular aluminum alloy forge piece comprises the following steps:
The first step: blanking: use aluminium cast bar is blank, a diameter of 680mm of this blank, height is 1500mm, and weight is
1550kg。
Second step: heating before forging: the first heating period: be placed in heating furnace by blank, make blank temperature be warming up to 300
℃；Second heating period: continue blank is warming up to 475 DEG C from the outlet temperature (300 DEG C) of described first heating period, insulation
28h.Before forging, the temperature curve of heating is as shown in Figure 1.
3rd step: base: as in figure 2 it is shown, the first stage: use cross upsetting pull method that heating gained blank upsetting pull is formed circle
Cake part；The concrete jumping-up mode of institute's cross jumping-up method is as follows: first along Z axis, blank jumping-up being formed disk, disk diameter is
1030mm, height is for shown in 650mm(Fig. 2 a).Then along X-axis, disk pulling being formed rectangle blank, this rectangle blank is long
Degree is 1470mm, and height and width are shown in 610mm(Fig. 2 b).Again rectangle blank is formed square base along X-axis jumping-up
Material, a length of 650mm of square blank, height and width are shown in 910mm(Fig. 2 c).By square blank along Z axis again
Secondary pulling forms rectangle blank, a length of 1470mm of rectangle blank, and height and width are shown in 610mm(Fig. 2 d).
Then along Z axis jumping-up, described rectangle blank being formed cake part, a diameter of 860mm of cake part, height is 930mm(Fig. 2 e institute
Show).Second stage: being punched out described cake part forming the ring base with endoporus, the concrete punching process of described punching is such as
Under: going out a deep 20mm counterbore first with punching pin, then the inwall at counterbore uniformly brushes lubricant, and lubricant is by graphite
It is mixed with Adeps Sus domestica, finally by punching pin, described counterbore is continued punching, make counterbore form Φ 280 through hole (such as Fig. 2 f institute
Show), the diameter of above-mentioned counterbore, less than the diameter of through hole, is first gone out counterbore and is prevented from pulling endoporus during punching.
4th step: melt down heating for the first time: as it is shown on figure 3, heat in ring base is reentered into heating furnace, make ring base
Temperature reach 475 DEG C, be incubated 7h；
5th step: reaming: ring base uses open die forging saddle support reaming preparation roll over ring ring base, first uses Φ's 280 during reaming
Mandrel carries out saddle support reaming, and during saddle support to Φ 500, the mandrel of replacing Φ 400 carries out saddle support reaming anti-stop ring base inwall again has relatively
Deep hammering.The stability that postorder is rolled over ring has very great help.The size rolling over ring ring base after saddle support reaming is Φ 1500 × 1200
×930。
6th step: second time melts down heating: as shown in Figure 4, rolles over ring ring base by the 5th step gained and is reentered in heating furnace
Carry out being heated to 475 DEG C, be incubated 3h；
7th step: roll over ring: using Ring Rolling Machine that described rolling ring ring base carries out the system of rolling over and form aluminum alloy forge piece, Ring Rolling Machine is radially
Feed rate is 0.7mm/s, on the one hand forging can be prevented overheated by the radial feed speed adjusting Ring Rolling Machine, additionally can also prevent
Not-go-end face peeling and groove.During rolling ring, the surface of described aluminum alloy forge piece is constantly brushed with lubricant, rolles over this aluminium alloy after ring
The size of forging is Φ 2050 × Φ, 1840 × 930(race diameter/inner ring diameter/highly).
8th step: by the 9th step gained aluminum alloy forge piece air cooling to room temperature；
9th step: heat treatment: first stage: the aluminum alloy forge piece that temperature is room temperature is heated to 505 DEG C, 7h is laggard in insulation
Row solution heat treatment, the detailed process of solution heat treatment is as follows: aluminum alloy forge piece is put into solid solution in the water that water temperature is 70 DEG C, makes
Temperature after aluminum alloy forge piece solid solution is 70 DEG C.
Second stage: by horizontal type ring rolling machine looping mill rolling cold to the aluminum alloy forge piece after solid solution, aluminum alloy forge piece during cold looping mill rolling
Deflection be 0.3%, finally complete artificial aging heat treatment, the temperature of artificial aging heat treatment is 160 DEG C.
Tenth step: machine to requiring size Φ 2000* Φ 1810*930(outside dimension, internal diameter size, highly).
Above description is explanation of the invention, is not the restriction to invention, and limited range of the present invention sees right
Requirement, in the case of the basic structure of the present invention, the present invention can make any type of amendment.
Claims (3)
1. the forging molding process of one kind high tubular aluminum alloy forge piece, it is characterised in that comprise the following steps:
The first step: blanking: use aluminium cast bar is blank；
Second step: heating before forging: the first heating period: be placed in heating furnace by blank, make blank temperature be warming up to no more than
300℃；Second heating period: continue blank is warming up to 470 DEG C ± 5 DEG C from the outlet temperature of described first heating period, protect
Temperature 22-28h；
3rd step: base: first stage: use cross upsetting pull method that heating gained blank upsetting pull is formed cake part；Second stage:
It is punched out described cake part forming the ring base with endoporus；The concrete jumping-up mode of described cross jumping-up method is as follows: first
Along Z axis, blank jumping-up is formed disk, then along X-axis, disk pulling is formed rectangle blank, then by rectangle blank along X-axis
Jumping-up forms square blank, square blank again pulls out formation rectangle blank along Z axis, then to described rectangle base
Expect to form cake part along Z axis jumping-up；The concrete punching process of described punching is as follows: it is heavy to go out cake part first with punching pin
Hole, the degree of depth of described counterbore is 20-50mm, and then the inwall at described counterbore uniformly brushes lubricant, finally by punching pin pair
Described counterbore continues punching, makes described counterbore form through hole, and the diameter of described counterbore is less than the diameter of described through hole；
4th step: melt down heating for the first time: heat in described ring base is reentered into heating furnace, make the temperature of ring base reach
470 DEG C ± 5 DEG C, it is incubated 5-7h；
5th step: reaming: described ring base uses open die forging saddle support reaming preparation roll over ring ring base；Described open die forging saddle support reaming is adopted
With the reaming in two times of the mandrel of different-diameter, the diameter of reaming mandrel is less than the diameter of second time reaming mandrel for the first time；
6th step: second time melts down heating: carry out being heated to 470 DEG C ± 5 DEG C in described rolling ring ring base is reentered into heating furnace,
Insulation 2-3h；
7th step: roll over ring: use Ring Rolling Machine that described rolling ring ring base carries out the system of rolling over and form aluminum alloy forge piece, Ring Rolling Machine radial feed
Speed is 0.6～0.7mm/s, rolles over the surface of described aluminum alloy forge piece during ring and is constantly brushed with lubricant, described lubricant by
Graphite is mixed with Adeps Sus domestica；
8th step: by the 9th step gained aluminum alloy forge piece air cooling to room temperature；
9th step: heat treatment: first stage: the aluminum alloy forge piece that temperature is room temperature is heated to 500 DEG C ± 5 DEG C, is incubated 5-7h
After carry out solution heat treatment；Second stage: by horizontal type ring rolling machine looping mill rolling cold to the aluminum alloy forge piece after solid solution, finally complete people
Work aging strengthening model；
Tenth step: machining is to requiring size.
The forging molding process of a kind of high tubular aluminum alloy forge piece the most as claimed in claim 1, it is characterised in that: the 9th step
The detailed process of one stage solution heat treatment is as follows: aluminum alloy forge piece is put into solid solution in the water that water temperature is 60～70 DEG C, makes aluminum
Temperature after alloy forged piece solid solution is 60～70 DEG C.
The forging molding process of a kind of high tubular aluminum alloy forge piece the most as claimed in claim 1, it is characterised in that: the 9th step
In two-stage during Ring Rolling Machine looping mill rolling cold to aluminum alloy forge piece, the ID distortion amount of aluminum alloy forge piece is 0%～0.3%, artificial aging
The temperature of heat treatment is 150～160 DEG C.
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| CN201410573288.1A CN104438419B (en) | 2014-10-24 | 2014-10-24 | A kind of forging molding process of high tubular aluminum alloy forge piece |
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| CN112846065A (en) * | 2021-01-05 | 2021-05-28 | 无锡派克新材料科技股份有限公司 | Cooling, modifying and forging technology for large-size high-alloying aluminum alloy |
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| CN101279344A (en) * | 2008-04-23 | 2008-10-08 | 贵州安大航空锻造有限责任公司 | Method for rolling and shaping aluminum alloy special-shaped ring forging |
| CN100569412C (en) * | 2008-04-23 | 2009-12-16 | 贵州航宇科技发展有限公司 | The method for rolling and shaping of aluminium alloy taper ring forged piece |
| CN101537466B (en) * | 2009-04-30 | 2010-10-13 | 西南铝业（集团）有限责任公司 | Method for manufacturing aluminium alloy rings with high performance and low residual stress |
| US9194027B2 (en) * | 2009-10-14 | 2015-11-24 | United Technologies Corporation | Method of forming high strength aluminum alloy parts containing L12 intermetallic dispersoids by ring rolling |
| CN102085549B (en) * | 2010-12-10 | 2012-09-19 | 贵州安大航空锻造有限责任公司 | Roll forming method of aluminum alloy high cylindrical ring forging |
| CN102925829A (en) * | 2012-11-22 | 2013-02-13 | 哈尔滨工业大学 | Heat treating method for Al-Cu-Mg-Si-based aluminium alloy thin-walled annular member |
| CN103706736B (en) * | 2013-12-16 | 2015-11-25 | 贵州安大航空锻造有限责任公司 | The roll forming of aluminium alloy straight-flanked ring base is the method for special-shaped thin wall ring |
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