CN107740012B - A kind of aerolite forging part preparation method - Google Patents
A kind of aerolite forging part preparation method Download PDFInfo
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- CN107740012B CN107740012B CN201710959337.9A CN201710959337A CN107740012B CN 107740012 B CN107740012 B CN 107740012B CN 201710959337 A CN201710959337 A CN 201710959337A CN 107740012 B CN107740012 B CN 107740012B
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- forging
- aerolite
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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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- 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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- 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
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Forging (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a kind of aerolite forging part preparation methods, first, the ingot casting for meeting the first pre-set dimension of requirement is rolled, and the preset passage of rolling, so that hot rolled plate of the ingot rolling at the second pre-set dimension, by large-scale forging part substep sectional forming, solve the problems, such as that equipment oversteps the extreme limit；Then, finish-forging is carried out to hot rolled plate, so that the preset angle of hot rolling plate benging, becomes forging, since the present invention uses hot rolled plate as blank, solves the problems, such as that flat-die forging cogging is unable to satisfy forging part uniformity；Then, forging is quenched；Then, the forging by quenching is subjected to stretch processing, becomes tensioning member, the present invention carries out cold stretch to forging part by hydraulic press and cuts down residual stress, solves forging part compression cold deformation residual stress and cuts down insufficient, non-uniform problem；Finally, tensioning member is carried out ageing treatment, become aerolite forging part.
Description
Technical field
The present invention relates to forging part rolling technical fields, more particularly, to a kind of aerolite forging part preparation method.
Background technique
Large aluminum alloy arc forging part is the crucial bearing member that aircraft wing is connect with fuselage, and dimensions is big, long
Spend 5.6m, projected area 4.1m2, forging part piece weight is more than 1 ton；Complex-shaped, machinability requires high, machining
It is afterwards irregular curved surface or herring-bone form, with a thickness of 5mm~8mm, it is desirable that maximum mold gap is no more than 6mm, in 200mm length
Gap difference is no more than 0.2mm, and lateral bending deflection degree is no more than 1mm, is that current largest domestic, most complicated, comprehensive performance require most
High aluminum alloy die forgings.
Currently, traditional forging part is usually 1 molding, and aerolite forging part exceeds the equipment limit, tradition side
Method can not produce；Traditional forging part is all made of the mode of forging base, and charge length needed for such large-scale arc forging part reaches
To 6 meters, forging base production efficiency is low, and uniformity is poor is not able to satisfy forging part technical requirements；Traditional forging cold pressing
The method of compression deformation cuts down quenched residual stress, and the especially big arc forging of such aluminium alloy is remaining using cold compression and deformation abatement quenching
Stress not can guarantee forging part size, and the later period, orthopedic meeting additional stress caused machining deformation, not be available.
Therefore, how to produce that meet the aerolite forging part of requirement be that those skilled in the art are urgently to be resolved
The technical issues of.
Summary of the invention
In view of this, can be produced full the object of the present invention is to provide a kind of aerolite forging part preparation method
The aerolite forging part of sufficient requirement.
To achieve the goals above, the present invention provides following schemes:
A kind of aerolite forging part preparation method, comprising the following steps:
Step A: the ingot casting of the first pre-set dimension is rolled, and rolls preset passage, so that the ingot rolling
At the hot rolled plate of the second pre-set dimension；
Step B: finish-forging is carried out to the hot rolled plate, so that the preset angle of hot rolling plate benging, becomes forging；
Step C: the forging is quenched；
Step D: the forging by quenching is carried out by cold stretch processing by hydraulic press, becomes tensioning member；
Step E: the tensioning member is subjected to ageing treatment, becomes aerolite forging part.
Preferably, in above-mentioned aerolite forging part preparation method, before the step A further include:
Step F: the ingot casting is indulged in Hot Line and pushes away 400 DEG C -420 DEG C of stove heating, and keeps the temperature 4 hours.
Preferably, in above-mentioned aerolite forging part preparation method, the preset passage of rolling in the step A is
The sum of first passage and second time；
Wherein, first passage is the passage of the transverse rolling first rolled；
The passage for the axial rolling that second passage rolls afterwards for it.
Preferably, in above-mentioned aerolite forging part preparation method, start rolling temperature in the step A is 390 DEG C-
410 DEG C, finishing temperature is more than or equal to 350 DEG C.
Preferably, it in above-mentioned aerolite forging part preparation method, is also wrapped between the step A and the step B
It includes:
Step G: cut the net hot rolled plate end to end at broadside on fish tail and layering.
Preferably, it in above-mentioned aerolite forging part preparation method, is also wrapped between the step G and the step B
It includes:
Step H: the finish-forging die for carrying out finish-forging to the hot rolled plate is heated, 250 DEG C -450 DEG C of heating temperature, is at least heated
14 hours；
The hot rolled plate is heated, heating temperature is 350 DEG C -400 DEG C, keeps the temperature -510 minutes 85 minutes.
Preferably, in above-mentioned aerolite forging part preparation method, during the finish-forging in the step B, forging is opened
Temperature is 330 DEG C -400 DEG C, and final forging temperature is more than or equal to 300 DEG C.
Preferably, in above-mentioned aerolite forging part preparation method, hardening heat in the step C is 472 DEG C-
482 DEG C, air thermal preservation 360 minutes, 60 DEG C -70 DEG C of water temperature are quenched, quenching shift time is less than or equal to 25 seconds.
Preferably, in above-mentioned aerolite forging part preparation method, the stretching in the step D is small in quenching 12
When interior completion.
Preferably, in above-mentioned aerolite forging part preparation method, ageing treatment is that first air is protected in the step E
116 DEG C -126 DEG C of temperature keeps the temperature 6 hours；Then 172 DEG C -182 DEG C of air thermal preservation keep the temperature 6 hours.
It can be seen from the above technical scheme that aerolite forging part preparation method disclosed by the invention, firstly, will
The ingot casting for meeting the first pre-set dimension of requirement is rolled, and rolls preset passage, so that ingot rolling is at second
The hot rolled plate of pre-set dimension, by large-scale forging part substep sectional forming, is solved since a point multiple passages roll ingot casting
The problem of equipment oversteps the extreme limit；Then, finish-forging is carried out to hot rolled plate, so that the preset angle of hot rolling plate benging, becomes forging, by
Solve the problems, such as that flat-die forging cogging is unable to satisfy forging part uniformity as blank using hot rolled plate in the present invention；Then, will
Forging is quenched；Then, the forging by quenching is subjected to stretch processing, becomes tensioning member, the present invention passes through hydraulic pressure
Machine carries out cold stretch to forging part and cuts down residual stress, and it is insufficient, uneven to solve forging part compression cold deformation residual stress abatement
Even problem；Finally, tensioning member is carried out ageing treatment, become aerolite forging part.In conclusion method of the invention
It can be realized and produce the aerolite forging part for meeting requirement.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the aerolite forging part preparation method flow chart that the embodiment of the present invention one provides；
Fig. 2 is aerolite forging part preparation method flow chart provided by Embodiment 2 of the present invention.
Specific embodiment
It is with reference to the accompanying drawing and specific real in order to make those skilled in the art better understand technical solution of the present invention
Applying mode, the present invention is described in further detail.
Embodiment one
As shown in Figure 1, the invention discloses a kind of aerolite forging part preparation methods, comprising the following steps:
Step S1: by the preset passage of the ingot rolling of selection, become hot rolled plate.
The ingot casting of first pre-set dimension is rolled, and rolls preset passage, so that ingot rolling is default at second
The hot rolled plate of size.
Specifically include: the cast ingot dimension of stock, selection is the first preset size, and here, the first preset size can
To be set as needed, in the present embodiment, the preset size of ingot casting first are as follows: 350mm*1300mm*3450mm, and ingot casting
Material be 7050, chemical component meets the requirement of Q/SWAJ5022-2009 (the ingot casting quality certification fills in YMS1121).
First transverse rolling is broadened to 1750+20Mm, then axial rolling is to 85±1Mm is thick.Rolling final size: 10000+500×1750+20×
85±1。
Rolling pass state modulator is as follows:
Transverse rolling reduction distribution 340 → 330 → 320 → 310 → 300 → 290 → 280 → 270 → 264；
Axial rolling reduction distribution 250 → 235 → 220 → 190 → 155 → 120 → 85.5.
Step S2: finish-forging is carried out to hot rolled plate, so that the preset angle of hot rolling plate benging, becomes forging.
The equipment that finish-forging uses are as follows: 30000 tons of hydraulic presses match bearing plate, F327 finish-forging die.
Finish-forging scheme: so that hot rolled plate is generated bending deformation, do not generate metal flow；The center of hot rolled plate is first pressed, so
Afterwards again respectively to two ends pressing mold, not needing pressure only (can guarantee web thickness by hydraulic press self weight pressing mold
83mm or more).Side stand rearways are forged, forbidding to lay flat prevents from deforming.
Here, the preset angle of hot rolling plate benging is the angle according to actual needs setting.
Step S3: forging is quenched.
Recirculated water stirring is opened before quenching to be terminated until quenching, and should go up and down the material for holding forging after forging quenching water-inlet immediately
Frame is not less than 10 minutes, and forging cannot expose the surface and (cancel the operation of lifting material frame after quenching sink transformation) in whole process, water
Middle immersion 16 minutes or more.
Step S4: the forging by quenching is carried out by cold stretch processing by hydraulic press, becomes tensioning member.
Stretch the equipment used are as follows: 3# machine, F327 drawing die.It completes to stretch in 12 hours after quenching, extensibility
1.5%-3%.Record stretches data on card.The extensibility in addition to collet is detected, after being stretched with F904 template inspection record
Radian situation of change.
Step S5: tensioning member is subjected to ageing treatment, becomes aerolite forging part.
Furnace charge by downwind it is edge-on it is equidirectional put, be spaced 500mm or more.First stage: 121 ± 5 DEG C, air thermal preservation
6 hours；Second stage: 177 ± 5 DEG C, air thermal preservation 6 hours.
Aerolite forging part preparation method disclosed by the invention, firstly, the first default ruler that requirement will be met
Very little ingot casting is rolled, and rolls preset passage, so that hot rolled plate of the ingot rolling at the second pre-set dimension, more due to dividing
A passage rolls ingot casting, by large-scale forging part substep sectional forming, solves the problems, such as that equipment oversteps the extreme limit；Then,
Finish-forging is carried out to hot rolled plate, so that the preset angle of hot rolling plate benging, becomes forging, since the present invention uses hot rolled plate as base
Material, solves the problems, such as that flat-die forging cogging is unable to satisfy forging part uniformity；Then, forging is quenched；Then, will
Forging by quenching carries out stretch processing, becomes tensioning member, and the present invention carries out cold stretch abatement to forging part by hydraulic press
Residual stress solves forging part compression cold deformation residual stress and cuts down insufficient, non-uniform problem；Finally, by tensioning member into
Row ageing treatment becomes aerolite forging part.To sum up, method of the invention, which can be realized to produce, meets requirement
Aerolite forging part.
Embodiment two
Referring to fig. 2, in second embodiment provided by the invention, aerolite forging part preparation method and embodiment one
In aerolite forging part preparation method it is similar, something in common is just repeated no more, difference is only introduced.
In the present embodiment, before disclosing step S1 further include:
Step S6: ingot casting is indulged in Hot Line and pushes away 400 DEG C -420 DEG C of stove heating, and keeps the temperature 4 hours.
Further, it discloses between step S1 and step S2 further include:
Step S7: cut net hot rolled plate end to end at broadside on fish tail and layering.
Hot rolled plate plate is cut and cuts 2 slabs to size 7200 with the fish tail of broadside and layering, 1 end to end only+100×726+15×
85±1mm。
Further, the invention discloses between step S7 and step S2 further include:
Step S8: the finish-forging die and hot rolled plate that finish-forging is carried out to hot rolled plate are heated respectively.
Mold heating: F327 finish-forging die, at least heats 14 hours by 250~450 DEG C.
Blank heating: 350~400 DEG C (fixed 380 DEG C of temperature), 85~510 minutes are kept the temperature.
It specifically, is the sum of the first passage and second time the invention discloses the preset passage of rolling in step S1,
Wherein, the first passage is the passage of the transverse rolling first rolled；The passage for the axial rolling that second passage rolls afterwards for it.
It is 390 DEG C -410 DEG C the invention also discloses the start rolling temperature in step S1, finishing temperature is more than or equal to 350
℃。
The invention also discloses during the finish-forging in step S2, starting forging temperature is 330 DEG C -400 DEG C, and final forging temperature is greater than
Or it is equal to 300 DEG C.
Hardening heat in step S3 is 472 DEG C -482 DEG C, air thermal preservation 360 minutes, quenches 60 DEG C -70 DEG C of water temperature, quenches
Fiery transfer time is less than or equal to 25 seconds.
Stretching in step S4 is completed in quenching 12 hours.
Ageing treatment is first 116 DEG C -126 DEG C of air thermal preservation in step S5, keeps the temperature 6 hours；Then 172 DEG C of air thermal preservation-
182 DEG C, keep the temperature 6 hours.
" first " in the present invention, " second " etc. are to be distinguished in description, without others particular meanings.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and inventive features phase
Consistent widest scope.
Claims (9)
1. a kind of aerolite forging part preparation method, which comprises the following steps:
Step A: the ingot casting of the first pre-set dimension is rolled, and rolls preset passage, so that the ingot rolling is at the
The hot rolled plate of two pre-set dimensions, the preset passage of rolling in the step A are the sum of the first passage and second time；
Wherein, first passage is the passage of the transverse rolling first rolled；
The passage for the axial rolling that second passage rolls afterwards for it；
Step B: finish-forging is carried out to the hot rolled plate, so that the preset angle of hot rolling plate benging, becomes forging, finish-forging refers to
So that the hot rolled plate is generated bending deformation, do not generate metal flow, first press the center of the hot rolled plate, then again respectively to
Two ends pressing mold only presses the mold by hydraulic press self weight, after forging that the hot rolled plate is edge-on, guarantees that web is thick
Spend 83mm or more；
Step C: the forging is quenched；
Step D: the forging by quenching is carried out by cold stretch processing by hydraulic press, becomes tensioning member；
Step E: the tensioning member is subjected to ageing treatment, becomes aerolite forging part.
2. aerolite forging part preparation method according to claim 1, which is characterized in that before the step A also
Include:
Step F: the ingot casting is indulged in Hot Line and pushes away 400 DEG C -420 DEG C of stove heating, and keeps the temperature 4 hours.
3. aerolite forging part preparation method according to claim 1, which is characterized in that opening in the step A
Rolling temperature is 390 DEG C -410 DEG C, and finishing temperature is more than or equal to 350 DEG C.
4. aerolite forging part preparation method according to claim 1, which is characterized in that the step A and described
Between step B further include:
Step G: cut the net hot rolled plate end to end at broadside on fish tail and layering.
5. aerolite forging part preparation method according to claim 4, which is characterized in that the step G and described
Between step B further include:
Step H: the finish-forging die for carrying out finish-forging to the hot rolled plate is heated, 250 DEG C -450 DEG C of heating temperature, at least heats 14
Hour；
The hot rolled plate is heated, heating temperature is 350 DEG C -400 DEG C, keeps the temperature -510 minutes 85 minutes.
6. aerolite forging part preparation method according to claim 4, which is characterized in that the end in the step B
In forging process, starting forging temperature is 330 DEG C -400 DEG C, and final forging temperature is more than or equal to 300 DEG C.
7. aerolite forging part preparation method according to claim 4, which is characterized in that quenching in the step C
Fiery temperature is 472 DEG C -482 DEG C, air thermal preservation 360 minutes, quenches 60 DEG C -70 DEG C of water temperature, quenching shift time is less than or waits
In 25 seconds.
8. aerolite forging part preparation method according to claim 4, which is characterized in that the drawing in the step D
Stretch is completed in quenching 12 hours.
9. aerolite forging part preparation method according to claim 4, which is characterized in that timeliness in the step E
Processing is first 116 DEG C -126 DEG C of air thermal preservation, keeps the temperature 6 hours；Then 172 DEG C -182 DEG C of air thermal preservation keep the temperature 6 hours.
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| CN201710959337.9A CN107740012B (en) | 2017-10-16 | 2017-10-16 | A kind of aerolite forging part preparation method |
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| CN201710959337.9A CN107740012B (en) | 2017-10-16 | 2017-10-16 | A kind of aerolite forging part preparation method |
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Families Citing this family (5)
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| CN109108196B (en) * | 2018-07-25 | 2020-06-23 | 东北轻合金有限责任公司 | Preparation method of high-strength and high-toughness aluminum alloy die forging for airplane wing |
| CN109234653B (en) * | 2018-10-23 | 2020-07-07 | 湖南大学 | Method for reducing residual stress of large complex aluminum alloy die forging |
| CN110453163B (en) * | 2019-08-16 | 2020-11-13 | 中国航发北京航空材料研究院 | Method for improving high-directional performance of 7000 series aluminum alloy oversized die forging |
| CN112872256A (en) * | 2020-12-28 | 2021-06-01 | 西南铝业（集团）有限责任公司 | Production process of 7039 alloy super-wide plate forging |
| CN112893724B (en) * | 2020-12-28 | 2022-10-21 | 西南铝业（集团）有限责任公司 | Isothermal die forging forming process for precision die forging of window frame of passenger observation window |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1780926A (en) * | 2003-04-10 | 2006-05-31 | 克里斯铝轧制品有限公司 | Al-zn-mg-cu alloy |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1780926A (en) * | 2003-04-10 | 2006-05-31 | 克里斯铝轧制品有限公司 | Al-zn-mg-cu alloy |
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