CN106270270B - A kind of cold compaction process of L-shaped aluminum alloy ring forging - Google Patents
A kind of cold compaction process of L-shaped aluminum alloy ring forging Download PDFInfo
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- CN106270270B CN106270270B CN201610799038.9A CN201610799038A CN106270270B CN 106270270 B CN106270270 B CN 106270270B CN 201610799038 A CN201610799038 A CN 201610799038A CN 106270270 B CN106270270 B CN 106270270B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/16—Making other particular articles rings, e.g. barrel hoops
-
- 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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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Forging (AREA)
Abstract
The present invention relates to a kind of cold compaction process of L-shaped aluminum alloy ring forging, the inventive method is L-shaped by annular forging piece Direct Rolling when rolling over ring, size before machining L-shaped aluminum alloy ring forging to cold deformation, it is cold-pressed using L-shaped frock, make annular forging piece along short transverse homogeneous deformation, the arrangement of isometry block strictly can control drafts after aluminum alloy solution, it effectively increases stock utilization, production cost has been saved, the mechanical property of material and the resistance to corrosion of aluminium alloy is greatly improved.
Description
Technical field
The present invention relates to forging process field, more particularly to a kind of cold compaction process of L-shaped aluminum alloy ring forging.
Background technology
With China's aerospace industry, modern national defense industry and the rapid development of transportation, important stressed member and knot
The lightweight of component, promotes the cry more and more higher for steel with aluminium, and the usage amount and demand of aluminum alloy forge piece just incrementally increase.
The aluminium alloy condition of heat treatment of some trades mark is that (compression eliminates stress state to T_52 states.Suitable for solution heat treatment or height
Cooled down after temperature shaping, stress eliminated by compressing, with the product of the set deformation volume of generation 1%~5%), in solution treatment
After end, it is necessary to after being cold-pressed, then aging strengthening model is carried out, to eliminate the solid solution residual stress of aluminium alloy.
Current domestic L-shaped aluminum alloy ring forging is all made as rectangle forging, is cold-pressed after solid solution, then carries out at timeliness heat
Reason, is finally machined L-shaped；Stock utilization is so on the one hand reduced, improves production cost；On the other hand also result in
Forging flow lines is destroyed in follow-up machining process, reduces the mechanical property of material, also reduces the anti-corruption of aluminium alloy
Erosion ability.The other existing cold compaction process for L-shaped aluminum alloy ring forging is 3 hours after the solid solution of rectangular aluminium alloy forging terminates
Segmentation cold deformation is inside carried out, after cold deformation, aging strengthening model is carried out, finally machines L-shaped.But the above-mentioned side of cold compaction process one
Face reduces stock utilization, improves production cost；On the other hand forging flow lines is also resulted in follow-up machining process
Destroyed, reduce the mechanical property of material, also reduce the resistance to corrosion of aluminium alloy.
The content of the invention
The applicant is directed to above-mentioned existing issue, has carried out Improvement, there is provided a kind of cold pressing of L-shaped aluminum alloy ring forging
Method, it not only increases the utilization rate of material, also a saving production cost.
The technical solution adopted in the present invention is as follows：
A kind of cold compaction process of L-shaped aluminum alloy ring forging, it is characterised in that comprise the following steps：
The first step：Blanking：Dimensions blanking is pressed on aluminium alloy cast ingot；
Second step：Forge Heating：Blank is placed in heating furnace and is warming up to 440 DEG C~470 DEG C, is incubated 20h~25h；
3rd step：Base：Vertically by the upsetting pull of WhF methods twice, and it is round as a ball be configured to cake part, then punching formed carry
The annular forging piece of centre bore；
4th step：Melt down for the first time：Annular forging piece obtained by 3rd step is put back in heating furnace again, 420 DEG C of heating-up temperature
~450 DEG C, and it is incubated 4~7h；
5th step：Saddle support reaming：Using round mandrel by annular element reaming to preliminary dimension, make the outer of the annular forging piece
Circle, endoporus increase, the annular forging piece highly keep constant；
6th step：Melt down for the second time：The annular forging piece is returned in heating furnace, 400 DEG C~430 DEG C of heating-up temperature,
And it is incubated 3~4h；
7th step：Rolling ring：Using L-shaped mould, by annular forging piece rolling ring to L-shaped size；
8th step：L-shaped annular forging piece obtained by 7th step is air-cooled to room temperature；
9th step：Machining：Size before the L-shaped ring forging is extremely cold-pressed along each region processing of short transverse；
Tenth step：Solid solution：The L-shaped ring forging is put into 10~12h of insulation after heating furnace is heated to 530~550 DEG C, so
The L-shaped ring forging is taken out into water cooling from heating furnace afterwards,
11st step：Cold pressing：The L-shaped ring forging is transferred to 3600T hydraulic presses, carried out by L-shaped frock, isometry block
Segmentation cold pressing, it is 50~100mm that L-shaped ring forging surface, which is cold-pressed overlapping section length, in being cold-pressed twice, until the circle of cold pressing one is completed, is made
L-shaped ring forging is along each region deformation 2.6~3.6% of short transverse；
12nd step：Timeliness：L-shaped ring forging obtained by 11st step is put into heating furnace to be heated to 140 DEG C~155 DEG C and protect
20~25h of temperature, then L-shaped ring forging is taken out from heating furnace and is air-cooled to room temperature；
13rd step：Machining：L-shaped ring forging obtained by 12nd step is machined to drawing size.
Its further technical scheme is：
During the solid solution of the tenth step, the L-shaped ring forging is transferred in water time≤12s from heating furnace, in water cooling
Water temperature is 70~80 DEG C, and the water time that enters of the L-shaped ring forging is 20~40min；
In the 11st step cold pressure procedure, L-shaped aluminum alloy ring forging, along short transverse each several part cold pressing amount be 2.6%~
3.6%；
The L-shaped frock includes being connected to form one by frock body, first boss, second boss, the first boss
An arc side is carried with second boss, makes to form the arc groove for coordinating ring forging between first boss, second boss.
Brief description of the drawings
Fig. 1 is structural representation of the aluminum alloy ring forging before cold pressing in the present invention.
Fig. 2 is structural representation of the aluminum alloy ring forging after cold pressing in the present invention.
Fig. 3 is the front view of L-shaped frock in the present invention.
Fig. 4 is Fig. 3 top view.
Wherein：1st, L-shaped ring forging；101st, the first endoporus；2nd, L-shaped frock；201st, first boss；202nd, arc groove；
203rd, second boss；204th, frock body；205th, arc side；3rd, isometry block.
Beneficial effects of the present invention are as follows：
The inventive method is L-shaped by annular forging piece Direct Rolling when rolling over ring, and L-shaped aluminum alloy ring forging is machined to cold
Size before deformation, it is cold-pressed using L-shaped frock, and making annular forging piece, the arrangement of isometry block can along short transverse homogeneous deformation
Strictly to control drafts after aluminum alloy solution, it effectively increases stock utilization, has saved production cost, has significantly carried
The high mechanical property of material and the resistance to corrosion of aluminium alloy.
Embodiment
Illustrate the embodiment of the present invention below.
Embodiment：
A kind of cold compaction process of L-shaped aluminum alloy ring forging comprises the following steps：
The first step：Blanking：Dimensions blanking is pressed on aluminium alloy cast ingot；
Second step：Forge Heating：Blank is placed in heating furnace and is warming up to 460 DEG C, is incubated 20h；
3rd step：Base：Shaped twice by the upsetting pull of WhF methods vertically, round as a ball is cake part, during then punching formation carries
The annular forging piece in heart hole；
4th step：Melt down for the first time：Annular forging piece obtained by 3rd step is put back in heating furnace again, 440 DEG C of heating-up temperature,
It is incubated 4h；
5th step：Saddle support reaming：Using round mandrel to annular forging piece reaming to preliminary dimension, make the outer of annular forging piece
Circle, endoporus increase, annular forging piece highly keep constant, and the excircle dimension of the annular forging piece is external diameter 1400, and internal diameter 900 is high
Spend 300mm.
6th step：Melt down for the second time：L-shaped ring forging is returned in heating furnace, 420 DEG C of heating-up temperature, is incubated 3h；
7th step：Rolling ring：Using L-shaped mould, by the rolling ring of annular forging piece 1 to L-shaped rolling ring size and L-shaped ring forging 1 is obtained.
8th step：L-shaped ring forging 1 obtained by 7th step is air-cooled to room temperature；
9th step：Machining：L-shaped ring forging 1 is machined to along short transverse to be cold-pressed preceding size, as shown in figure 1, L-shaped ring
The height value A of forging 1 is 280mm, and height value B is 135mm, and first boss 201 stretches into L-shaped ring in L-shaped frock 2 before cold pressing
Spacing C is formed in first endoporus 101 of forging 1 and in the bottom hole surface of the first endoporus 101, spacing C is 4.35mm.
Tenth step：Solid solution：L-shaped ring forging 1 is put into heating furnace to be heated to being incubated 10h after 530 DEG C, then forged L-shaped ring
Part 1 takes out water cooling from heating furnace, and L-shaped ring forging 1 is taken out from heating furnace and transfer time≤10s of water cooling, L-shaped ring forging 1
In water cooling, water temperature is 80 DEG C, and the water time that enters of L-shaped ring forging 1 is 20min.
11st step：As shown in Fig. 2, Fig. 3 and Fig. 4, cold pressing：L-shaped ring forging 1 is transferred to 3600T hydraulic presses, passes through L
Shape frock 2, isometry block 3 carry out segmentation cold pressing, and as shown in Figure 3, Figure 4, above-mentioned L-shaped frock includes convex by frock body 204, first
Platform 201, second boss 203 are connected to form one, and first boss 201 and second boss 203 carry an arc side 205, make the
The arc groove 202 for coordinating L-shaped ring forging 1, above-mentioned first boss 201 are formed between one boss 201, second boss 203
Height be more than second boss 203 height.The arc groove 202 of L-shaped frock 2 is coordinated into first endoporus in L-shaped ring forging 1
Between 101 inwall and the outline of L-shaped ring forging 1, the overlapping section length in the surface of L-shaped ring forging 1 is 50mm in being cold-pressed twice, directly
Completed to the cold pressing circle of L-shaped ring forging 1 one；Make L-shaped ring forging 1 along each region deformation of short transverse, its height value A1 be 272mm,
Height value A2 is 131mm；
12nd step：Timeliness：L-shaped ring forging obtained by 11st step is put into heating furnace to be heated to 140 DEG C and be incubated 20h,
Then L-shaped ring forging 1 is taken out from heating furnace and is air-cooled to room temperature；
13rd step：Machining：L-shaped ring forging obtained by 12nd step is machined to drawing size.
Above description is explanation of the invention, is not the restriction to invention, limited range of the present invention is referring to right
It is required that in the case of the basic structure without prejudice to the present invention, the present invention can make any type of modification.
Claims (3)
1. a kind of cold compaction process of L-shaped aluminum alloy ring forging, it is characterised in that comprise the following steps：
The first step：Blanking：Dimensions blanking is pressed on aluminium alloy cast ingot；
Second step：Forge Heating：Blank is placed in heating furnace and is warming up to 440 DEG C~470 DEG C, is incubated 20h~25h；
3rd step：Base：Vertically by the upsetting pull of WhF methods twice, and it is round as a ball be configured to cake part, then punching formed carry center
The annular forging piece in hole；
4th step：Melt down for the first time：Annular forging piece obtained by 3rd step is put back in heating furnace again, heating-up temperature 420 DEG C~450
DEG C, and it is incubated 4~7h；
5th step：Saddle support reaming：Using round mandrel by annular element reaming to preliminary dimension, make the annular forging piece it is cylindrical,
Endoporus increases, and the annular forging piece highly keeps constant；
6th step：Melt down for the second time：The annular forging piece is returned in heating furnace, 400 DEG C~430 DEG C of heating-up temperature, and protected
3~4h of temperature；
7th step：Rolling ring：Using L-shaped mould, by annular forging piece rolling ring to L-shaped rolling ring size and L-shaped ring forging is obtained；
8th step：L-shaped annular forging piece obtained by 7th step is air-cooled to room temperature；
9th step：Machining：Size before the L-shaped ring forging is extremely cold-pressed along each region processing of short transverse；
Tenth step：Solid solution：The L-shaped ring forging is put into 10~12h of insulation after heating furnace is heated to 530~550 DEG C, then will
The L-shaped ring forging takes out water cooling from heating furnace,
11st step：Cold pressing：The L-shaped ring forging is transferred to 3600T hydraulic presses, is segmented by L-shaped frock, isometry block
Cold pressing, it is 50~100mm that L-shaped ring forging surface, which is cold-pressed overlapping section length, in being cold-pressed twice, until the circle of cold pressing one is completed, makes L-shaped
Ring forging is along each region deformation 2.6~3.6% of short transverse；
12nd step：Timeliness：L-shaped ring forging obtained by 11st step is put into heating furnace and is heated to 140 DEG C~155 DEG C and insulation 20
~25h, then L-shaped ring forging is taken out from heating furnace and is air-cooled to room temperature；
13rd step：Machining：L-shaped ring forging obtained by 12nd step is machined to drawing size.
A kind of 2. cold compaction process of L-shaped aluminum alloy ring forging as claimed in claim 1, it is characterised in that：It is dissolved in the tenth step
During, the L-shaped ring forging is transferred in water time≤12s from heating furnace, and in water cooling, water temperature is 70~80 DEG C, the L
The water time that enters of shape ring forging is 20~40min.
A kind of 3. cold compaction process of L-shaped aluminum alloy ring forging as claimed in claim 1, it is characterised in that：The L-shaped frock bag
Include and be connected to form one by frock body, first boss, second boss, the first boss carries an arc with second boss
Side, make to form the arc groove for coordinating ring forging between first boss, second boss.
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| CN201610799038.9A CN106270270B (en) | 2016-08-31 | 2016-08-31 | A kind of cold compaction process of L-shaped aluminum alloy ring forging |
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| CN201610799038.9A CN106270270B (en) | 2016-08-31 | 2016-08-31 | A kind of cold compaction process of L-shaped aluminum alloy ring forging |
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| CN106270270B true CN106270270B (en) | 2018-02-13 |
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| CN108746447B (en) * | 2018-05-16 | 2020-03-17 | 江苏理工学院 | Manufacturing process of high-strength corrosion-resistant aluminum alloy forging |
| CN108890218B (en) * | 2018-05-16 | 2020-02-14 | 江苏理工学院 | Manufacturing process of high-strength heat-resistant aluminum alloy forging |
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| CN111618217A (en) * | 2020-06-09 | 2020-09-04 | 无锡派克新材料科技股份有限公司 | Large-size aluminum alloy bar outer diameter structure densification forging method |
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| CN111644548B (en) * | 2020-06-12 | 2022-04-01 | 无锡派克新材料科技股份有限公司 | Forging-modifying technology for high-strength homogeneous aluminum alloy forging for spaceflight |
| CN112828218B (en) * | 2020-12-31 | 2022-09-06 | 无锡派克新材料科技股份有限公司 | Method for forming large-size thick-section ultrahigh-strength aluminum alloy cylindrical part |
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