CN107009094A - The integrated preparation technology of the strong high temperature resistant magnesium alloy shell part forging rolling of major diameter superelevation - Google Patents
The integrated preparation technology of the strong high temperature resistant magnesium alloy shell part forging rolling of major diameter superelevation Download PDFInfo
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- CN107009094A CN107009094A CN201710179999.4A CN201710179999A CN107009094A CN 107009094 A CN107009094 A CN 107009094A CN 201710179999 A CN201710179999 A CN 201710179999A CN 107009094 A CN107009094 A CN 107009094A
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- magnesium alloy
- forging
- shell part
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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
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
- B64C2001/0054—Fuselage structures substantially made from particular materials
- B64C2001/0081—Fuselage structures substantially made from particular materials from metallic materials
Abstract
The invention discloses the integrated preparation technology of the strong high temperature resistant magnesium alloy shell part forging rolling of major diameter superelevation.Process route is:Semicontinuous electromagnetic casting, be machined into ingot blank, homogenizing annealing, multidirectional flat-die forging, machine drilling, ring-rolling and T6 heat treatment.Prepared housing component size is the 1700mm of external diameter φ 600, the 100mm of wall thickness 35,300 700mm of height, and its T6 states room temperature is tangential, high to tensile strength >=470MPa, tangential during elongation >=5%, 200 DEG C, high to tensile strength >=350MPa, elongation >=7%.The product that the present invention is prepared has a large scale, flawless, the features such as the room temperature strength of superelevation and excellent heat resistance, and qualified magnesium alloy shell part can be provided for fields such as Aero-Space.
Description
Technical field
The present invention relates to the forging deformation and ring in the deformation field of magnesium alloy, more particularly to Mg-Gd-Y-Zr magnesium-rare earths
Roll deformation field.
Technical background
As the important structural member of aerospace field, major diameter housing component is typically prepared by aluminium alloy.But it is in view of above-mentioned
There is urgent loss of weight demand in field, part aluminium casing part is substituted with the smaller magnesium alloy of density, disappear for reducing fuel
Consumption, lifts the speed and flying distance of aircraft, significant.But, have using the qualified housing component of magnesium alloy processability
Certain difficulty.The special operating environment requirements structural member mechanical property of aircraft is up to standard, heat-resist.But develop more into
Ripe traditional magnesium alloy, such as Mg-Al-Zn systems, Mg-Zn-Zr systems, generally existing mechanical property are relatively low, and heat resistance difference etc. lacks
Point, is difficult with the qualified housing component of above-mentioned magnesium alloy processability.Research shows, rare earth element is added such as into magnesium alloy
Gd, Y, Nd, the alloy system such as the Mg-Gd-Y-Zr designed, can make magnesium alloy obtain very high even superelevation mechanical property and
Excellent heat resistance.But rare earth also improves its resistance of deformation while magnesium alloy strength and heat resistance is improved, and reduces
The temperature and velocity window of suitable deformation.Moreover, the special close-packed hexagonal structure of magnesium alloy causes it to be easy in deformation
Strong texture is produced, this can limit the ability that it continues to deform.These factors make it difficult to prepare with superhigh intensity, height
The magnesium alloy shell part of heat resistance.
The content of the invention
The purpose of the present invention is to provide to cut for the Mg-Gd-Y-Zr housing components with major diameter superhigh intensity high-fire resistance energy
Real feasible moulding process, to meet demand of the aerospace field to high-strength heat-resistant magnesium alloy housing component.It is proposed by the present invention
Technique is as follows：
1. preparing magnesium alloy ingot using semicontinuous electromagnetic casting method, specification is φ 340-630mm, length >=2000mm ingot
Base, ingot casting casting is incubated 12-16h stress relief annealings at 150-300 DEG C immediately after terminating.
2. being incubated 15-25h at 480-540 DEG C carries out Homogenization Treatments, room temperature is then cooled to the furnace.
3. pair ingot casting carries out railway carriage, flaw detection, sawing machine blanking obtains size for φ 320-600mm, length 800-1200mm's
Cylindrical ingot blank.
4. 10-16h insulations are carried out to blank in 450 DEG C of -530 DEG C of temperature ranges before forging, and to flat anvil up and down in 250-
350 DEG C of temperature ranges are heated；Blank holding temperature is too high, and the danger for having burning, holding temperature is too low, is easily caused out
Split, and dynamic recrystallization is less likely to occur.The reason for 450-530 DEG C of selection is incubated to blank is that this temperature range was both avoided
Burning is dangerous, in turn ensure that the deformability of alloy, promotes its to occur dynamic recrystallization, crystal grain thinning.And due to being freely
Forging, forging is exposed in atmosphere, and temperature is constantly reduced, so needing heated block to be incubated forging.Chopping block temperature is too low, no
Good heat insulation effect can be played, and chopping block is heated to very high temperature then time consumption and energy consumption, increases process.Chopping block is heated to
250-350 DEG C, preferable heat insulation effect, and easily quick realization can be both played, production efficiency is improved.
5. 6-10mm/s multi-pass multiway forgings at a slow speed are carried out on vertical hydraulic press；Idiographic flow is:With cylindrical base
Material it is high to, any two vertical radial directions be respectively Z, Y and X-direction.First along Z, Y and X-direction carry out 3-6 passage jumping-ups,
Pass deformation is 20-40%, and cylinder blank is pressed into 6 face bodies；Then using a direction in Y or X as axle, compression rib is rolled
6 face bodies are pressed into 10-18 faces body by angle 2-6 passages, single pass heavy deformation 10-20%；Finally erect jumping-up, drafts 20-40%,
It is pressed into approximate cylinder；440-520 DEG C of annealing insulation 0.5-2h is melted down, with the height of new cylinder to two after taking-up
Any vertical radial direction is respectively Z, and Y and X-direction repeat above-mentioned forging and intermediate annealing process 1-2 times, and final jumping-up obtains height
Spend 300-700mm approximate cylindrical blank, air cooling.Forging method in the present invention, except in Z, Y, tri- directions of X carry out many
Beyond passage aximal deformation value forging deformation, effective crystal grain thinning.Also using Y or X as axle, compression corner angle are rolled.This mode can
Forging surface is enough allowed to obtain enough deflections, the strong texture that aximal deformation value is brought can effectively weaken again before so that forging
The deformation of part internal and external parts is uniform, anisotropy very little.Compression corner angle passage is very few or pass deformation is too small, and surface is difficult to obtain
Sufficient deformation is obtained, the effect for weakening texture is also bad；Compress corner angle passage excessive, forging cooling is obvious, easily cracking, passage
Deflection is excessive, then easily produces new texture.Corner angle are compressed in the present invention 2-6 times, pass deformation 10-20% is ensureing to close
Under the premise of gold is indehiscent, surface is set to obtain deflection as much as possible, while strong caused by aximal deformation value weaken again before
Strong texture.When forging temperature is too low, it is necessary to carry out intermediate annealing to it.Intermediate anneal temperature is too high or soaking time is long,
Crystal grain is easily too grown up, and damages mechanical property；Annealing temperature is too low or the time is too short, bad to the heat insulation effect of forging, becomes
Forging easily ftractures during shape.Intermediate annealing system in the present invention, makes full use of every fire time forging to terminate rear forging and still retains one
The characteristics of constant temperature is spent, each intermediate annealing suitably reduces temperature, while abundant insulation is realized to forging, it is to avoid because of temperature
The problem of excessive grain is grown up caused by too high.
6. in ingot blank center machine drilling, hole size φ 200-280mm.
7. a fire time is carried out to ingot blank on looping mill or many fiery secondary rings roll into 460-530 DEG C of insulation ingot blank before shape, looping mill rolling
4-6h, preheats drive roll, core roller, embraces roller and up and down cone roller.Drive roll rotating speed is 8-30r/min, the feed of core roller straight line during rolling
Speed 0.2-2.0mm/s, upper cone roller is high to application 2-10mm deflections, 250-300 DEG C of roller temperature along rolled piece；Per fire time rolling
Deflection 20%-60%, rolling melt down 450-520 DEG C of insulation 0.5-2h after terminating；Using the looping mill rolling deformation of different fire time, prepare
External diameter φ 600-1700mm, wall thickness 35-100mm, height 300-700mm magnesium alloy shell part, are air-cooled to room temperature.Prepare big straight
Deflection needed for the housing component of footpath is big, and deformation time is long, is difficult shaping using a fire time looping mill rolling, utilizes many fire time looping mill rollings, equilibrium point
With every fire time deflection, shaping is easily realized, but intermediate annealing causes crystal grain to be grown up, and performance can have been damaged.Using 450-
520 DEG C of insulation 0.5-2h intermediate annealing process, and insulation is once low 10 DEG C than before every time, both ensure that heat penetration, makes rolled piece
It is not easily susceptible to cracking, suppresses the undue of crystal grain again and grow up, it is ensured that mechanical property.Applying height using cone roller during looping mill rolling can to deflection
To avoid producing defects such as " fish tails ", but height becomes complicated to the excessive rolled piece stress state that also results in of deflection, magnesium alloy tool
There is close-packed hexagonal structure, complicated stress state easilys lead to its cracking, both may be used in height to the small deformation amount for applying 2-10mm
To eliminate " fish tail " defect, stress state complex is avoided rolled piece is ftractureed again.
8. carrying out T6 processing after shaping to housing component, solid solution treatment process is 350-450 DEG C of insulation 30-120min, is used
Solid solution system in the present invention, T4 states strength of materials change is little, and elongation percentage is but increased substantially.Then hold higher than this processing range
Easily cause excessive grain to be grown up, damage intensity, then cause the effect for eliminating processing hardening bad less than this scope, elongation percentage lifting
It is unobvious.Institution of prescription is 200-250 DEG C of insulation 10-72h, and aging temp is too high or overlong time, and it is excessive to decompose phase size, by force
Change effect is bad, and aging temp is too low or the time is too short, long the time required to reaching peak value timeliness, influences production efficiency, reinforcing
Effect is also restricted.Shorter the time required to reaching peak value timeliness using the institution of prescription of the present invention, reinforcing effect is also very aobvious
Write.The T6 heat treating regimes of solution treatment+timeliness in the comprehensive utilization present invention so that housing component possesses the intensity and Gao Yan of superelevation
Malleability.
In the step 4 before multiway forging 480-520 DEG C insulation blank 10-14h, in 300-350 DEG C of heated block.
First along Z in the step 5, Y and X-direction carry out 3-6 passage jumping-ups, and pass deformation is 30-40%, by circle
Cylindrical workpiece is pressed into 6 face bodies；Then using Y or X as axle, compression corner angle 4-6 passages, pass deformation 15-20%, by 6 face bodies are rolled
It is pressed into 14-18 faces body；Intermediate annealing process is 470-510 DEG C of insulation 0.5-1.5h, and each intermediate anneal temperature is than before more once
It is low 10 DEG C.
Ingot blank 4-6h is incubated at 480-520 DEG C before ring-rolling in the step 7, cone roller is high to applying along rolled piece during rolling
Plus 2-4mm drafts, intermediate annealing process is 470-510 DEG C of insulation 0.5-2h, and insulation ratio preceding temperature reduction by 10 every time
DEG C, finally prepare the housing component that maximum gauge is φ 1700mm.
Solution treatment system is 410-430 DEG C of insulation 45-90min in the step 8, and institution of prescription is 210-230 DEG C of guarantor
Warm 10-20h.
The main advantages of the present invention
1. pair ingot casting carries out hammer cogging, first using the mode of texturing for rolling compression corner angle, both surface of ingot blank was obtained
Enough deflections, effectively eliminate the strong texture brought along Z, Y and X-direction large deformation again, are that follow-up looping mill rolling deformation is carried
Supply each position distortions uniform, the small high-quality forging stock of anisotropy, the strong guarantee success of looping mill rolling.
2. during looping mill rolling by accurately control cone roller along it is high to drafts, both eliminated " fish tail " defect, turn avoid because
Problem of Cracking caused by rolled piece stress is complicated；And by using many fire time looping mill rollings, deflection of the equilibrium assignment per fire time and
Each intermediate annealing once reduces by 10 DEG C of mode than preceding, maximum outside diameter φ 1700mm is successfully prepared first, mechanical property is excellent
Different annular element.
3. by carrying out T6 Technologies for Heating Processing to rolled piece, make to which give that room temperature is tangential, height to tensile strength >=470MPa,
It is tangential during elongation >=5%, 200 DEG C, high to tensile strength >=350MPa, the excellent mechanical performance of elongation >=7%.
Brief description of the drawings
Fig. 1 is the semicontinuous ingot casting figures of φ 450mm used in the present invention；
Fig. 2 is the approximate cylinder forging stock figure of the height 330-500mm prepared by the present invention；
The strong high temperature resistant magnesium alloy shell part figure of major diameter superelevation that Fig. 3 prepares for the present invention.
Embodiment
Embodiment 1
Diameter phi 400mm is prepared first with semicontinuous electromagnetic casting, long 2500mm, composition is Mg-9.20Gd-2.90Y-
0.20Ag-0.05Er-0.39Zr (wt.%) ingot casting, casting is incubated 14h stress relief annealings after terminating at 225 DEG C, is machined into
Diameter phi 380mm, length 800mm ingot blank, 520 DEG C of insulation 15h carry out homogenizing annealing.Hammer cogging, forging are carried out to ingot casting
Preceding 490 DEG C of insulations ingot blank 10h is made, 350 DEG C will be heated to by flat anvil up and down, 10mm/s is carried out at a slow speed to ingot blank on Vertical Oil press
Multi-pass forging deformation, idiographic flow is：With cylinder blank it is high to, any two vertical radial directions be respectively Z, Y and X side
To；First along Z, Y and X-direction carry out 6 passage jumping-ups, and pass deformation is 30%, and cylinder blank is pressed into 6 face bodies；Then
Using Y or X as axle, the compression passage of corner angle 4 is rolled, 6 face bodies are pressed into 14 face bodies by pass deformation 20%；Jumping-up is finally erected, is pressed
Lower amount 25%, is pressed into approximate cylinder.Melt down 480 DEG C of insulation 1h.With the high to any vertical of new cylinder after coming out of the stove
Two radial directions are Z, and Y and X-direction repeat above-mentioned forging technology, the approximate cylinder that height is 330mm are finally pressed into, after forging terminates
It is air-cooled to room temperature.In blank center machine drilling, hole size φ 260mm.After 480 DEG C of insulation 6h, ingot blank is entered on milling train
The fiery secondary ring of row one rolls into shape, and drive roll rotating speed is 10r/min during rolling, core roller straight line feeding rate 0.4mm/s, cone roller along it is high to
Drafts is 2mm, and rolling reduction 54%, 250 DEG C of roller temperature rolls out external diameter φ 941mm, height 328mm, wall thickness 74mm
Housing component, be air-cooled to room temperature.T6 processing is carried out to housing component, solution treatment system is 430 DEG C of insulation 1h, then at 210 DEG C
Carry out 48h timeliness insulations.T6 state tensile mechanical properties are listed in table 1.
Embodiment 2
Diameter phi 450mm is prepared first with semicontinuous electromagnetic casting, long 2500mm, composition is Mg-8.92Gd-2.23Y-
0.28Ag-0.12Er-0.36Zr (wt.%) ingot casting, as shown in figure 1, being incubated 16h stress relief annealings at 200 DEG C, is machined into
Diameter phi 420mm, length is 1075mm ingot blank, and 490 DEG C of insulation 20h homogenizing annealing is carried out to ingot blank.Ingot casting is carried out
Hammer cogging, forges preceding 520 DEG C of insulations ingot blank 10h, and flat anvil is heated to 325 DEG C up and down, carries out 6mm/s's on Vertical Oil press
Multi-pass forging deformation at a slow speed, idiographic flow is as follows：With cylinder blank it is high to, any two vertical radial directions be respectively Z, Y
And X-direction；First along Z, Y and X-direction carry out 3 passage jumping-ups, and pass deformation is 40%, and cylinder blank is pressed into 6 faces
Body；Then using Y or X as axle, the compression passage of corner angle 6 is rolled, 6 face bodies are pressed into 18 face bodies by pass deformation 20%；Finally erect
Jumping-up, drafts 20% is pressed into approximate cylinder.Melt down 510 DEG C of insulation 0.5h.With the high to appointing of new cylinder after coming out of the stove
Two vertical radial directions of meaning are Z, and Y and X-direction repeat above-mentioned forging technology.500 DEG C of insulation 1h are melted down in forging after terminating, after coming out of the stove
Above-mentioned forging technology is repeated, the approximate cylinder that height is 490mm is finally pressed into, is air-cooled to room temperature.In ingot blank center machinery
Perforation, hole size φ 265mm.After 510 DEG C of insulation ingot blank 6h, looping mill rolling shaping twice is carried out to ingot blank on looping mill.During rolling
Drive roll rotating speed is 12r/min, core roller straight line feeding rate 0.2mm/s.First time looping mill rolling deflection is 20%, cone roller along it is high to
Drafts is 3mm, and roller temperature is 250 DEG C.First time looping mill rolling terminates laggard 500 DEG C of insulation 1h of stove, second of looping mill rolling deflection
For 55%, cone roller along it is high to drafts be 3mm, roller temperature is 280 DEG C, rolls out external diameter φ 1200mm, height 484mm, wall thickness
60mm housing component, is air-cooled to room temperature.It is specific in kind left referring to Fig. 3.T6 processing is carried out to housing component, solution treatment system is
410 DEG C of insulation 2h, institution of prescription is 225 DEG C of insulation 12h.T6 state tensile mechanical properties are listed in table 1.
Embodiment 3
Diameter phi 450mm is prepared first with semicontinuous electromagnetic casting, long 2500mm, composition is Mg-8.71Gd-2.64Y-
0.25Ag-0.12Er-0.35Zr (wt.%) ingot casting, is incubated 14h stress relief annealings at 250 DEG C, is machined into diameter phi
420mm, length is 1075mm ingot blank, 500 DEG C of insulation 15h homogenizing annealings.Hammer cogging is carried out to ingot casting, by ingot before forging
Base is incubated flat anvil above and below 12h, heating at 510 DEG C and, to 300 DEG C, 8mm/s forging multidirectional at a slow speed is then carried out on Vertical Oil press
Make, idiographic flow is as follows：With cylinder blank it is high to, any two vertical radial directions be respectively Z, Y and X-direction；First along
Z, Y and X-direction carry out 4 passage jumping-ups, and pass deformation is 35%, and cylinder blank is pressed into 6 face bodies；Then using Y or X as axle,
The compression passage of corner angle 4 is rolled, 6 face bodies are pressed into 14 face bodies by pass deformation 15%；Finally erect jumping-up, drafts 20%, by it
It is pressed into approximate cylinder.Melt down 510 DEG C of insulation 1.5h.With the high to any two vertical radial directions are of new cylinder after coming out of the stove
Z, Y and X-direction repeat above-mentioned forging and annealing process 2 times, are finally pressed into the approximate cylinder that height is 500mm, forging terminates
After be air-cooled to room temperature, specific material object is shown in 7# in Fig. 2.In blank center machine drilling, hole size is φ 270mm.490 DEG C of insulations
After ingot blank 6h, shape is rolled into ingot blank 3 secondary rings of progress on looping mill.Drive roll rotating speed is 16r/min during rolling, and core roller straight line is given
Enter speed 0.2mm/s.First time rolling reduction is 20%, and cone roller is 2mm along height to drafts, and roller temperature is 270 DEG C, the
Looping mill rolling terminates to melt down 480 DEG C of insulation 1h.Second rolling reduction is 42%, cone roller along it is high to drafts be 3mm, roll
290 DEG C of temperature, second of looping mill rolling terminates to melt down 470 DEG C of insulation 1.5h.Third time rolling reduction is 42%, and cone roller is along high to pressure
Lower amount is 3mm, and 300 DEG C of roller temperature rolls out external diameter φ 1700mm, and wall thickness 35mm, height 492mm housing component is air-cooled to
Room temperature.It is specific in kind right referring to Fig. 3.T6 processing is carried out to housing component, solution treatment system is 410 DEG C of insulation 1.5h, timeliness work
Skill is 230 DEG C of insulation 12h.T6 state tensile mechanical properties are listed in table 1.
Magnesium alloy shell part mechanical property in the embodiment of table 1
Claims (5)
1. the integrated preparation technology of the strong high temperature resistant magnesium alloy shell part forging rolling of major diameter superelevation, alloy mass percentage composition is：Gd：
8.0-9.6%, Y：The ratio of 1.8-3.2%, Gd content and Y contents is：3≤Gd/Y≤5, Zr：0.3-0.7%, Ag：0.02-
0.5%, Er：The ratio of 0.02-0.3%, Ag content and Er contents is：1≤Ag/Er≤3, impurity include Fe, Si, Cu, Ni and its
His inevitable impurity element, wherein Fe≤0.02%, Si≤0.02%, Cu≤0.005%, Ni≤0.003%, content of impurities
No more than 0.1%, remaining is Mg, specifically includes following steps：
A, prepare magnesium alloy ingot using semicontinuous electromagnetic casting method, specification is φ 340-630mm, length >=2000mm ingot
Base, ingot casting casting is incubated 12-16h stress relief annealings at 150-300 DEG C immediately after terminating；
B, 480-540 DEG C be incubated 15-25h carry out Homogenization Treatments, then cool to room temperature with the furnace；
C, railway carriage is carried out to ingot casting, flaw detection, sawing machine blanking obtains size for φ 320-600mm, length 800-1200mm cylinder
Shape ingot blank；
10-16h is incubated to blank at 450 DEG C -530 DEG C before D, multiway forging, flat anvil up and down is heated, control temperature exists
250-350℃；
E, the 6-10mm/s multidirectional flat-die forgings of multi-pass at a slow speed are carried out on vertical hydraulic press, idiographic flow is:With cylindrical base
Material it is high to, any two vertical radial directions be respectively Z, Y and X-direction；First along Z, Y and X-direction carry out 3-6 passage jumping-ups,
Pass deformation is 20-40%, and cylinder blank is pressed into 6 face bodies；Then using Y or X as axle, compression corner angle 2-6 passages are rolled,
6 face bodies are pressed into 10-18 faces body by single pass heavy deformation 10-20%；Jumping-up is finally erected, drafts 20-40% is pressed into circle
Cylinder；440-520 DEG C of annealing insulation 0.5-2h is melted down, with the high to two any vertical radial directions of new cylinder after taking-up
Respectively Z, Y and X-direction repeat above-mentioned forging and intermediate annealing process 1-2 times, and final jumping-up obtains height 300-700mm circle
Cylinder blank, air cooling；
F, in ingot blank center machine drilling, hole size φ 200-280mm；
G, a fire time is carried out to ingot blank or many fiery secondary rings roll into 460-530 DEG C of insulation ingot blank 4-6h before shape, looping mill rolling, preheating is actively
Roller, core roller, embrace roller and cone roller up and down；Drive roll rotating speed is 8-30r/min, core roller straight line feeding rate 0.2-2.0mm/ during rolling
S, cone roller is along high to application 2-10mm drafts, 250-300 DEG C of roller temperature, per fire time rolling reduction 20%-60%；Rolling knot
450 DEG C of -520 DEG C of insulation 0.5-2h are melted down after beam；Using once or many fire time rolling deformation, prepare external diameter φ 600-
1700mm, wall thickness 35-100mm, height 300-700mm magnesium alloy shell part, are air-cooled to room temperature；
H, to housing component carry out T6 heat treatments, solid solution system be 350-450 DEG C insulation 30-120min, institution of prescription is 200-250
DEG C insulation 10-72h；Its T6 states room temperature is tangential, high to tensile strength >=470MPa, tangential, Gao Xiang during elongation >=5%, 200 DEG C
Tensile strength >=350MPa, elongation >=7%.
2. the integrated preparation technology of forging rolling of the strong high temperature resistant magnesium alloy shell part of the major diameter superelevation according to claim 1, it is special
Levy and be：In step D before multiway forging 480-520 DEG C insulation blank 10-14h, in 300-350 DEG C of heated block.
3. the integrated preparation technology of forging rolling of the strong high temperature resistant magnesium alloy shell part of the major diameter superelevation according to claim 1, it is special
Levy and be：First along Z in step E, Y and X-direction carry out 3-6 passage jumping-ups, and pass deformation is 30-40%, by cylindrical base
Material is pressed into 6 face bodies；Then using Y or X as axle, compression corner angle 4-6 passages are rolled, 6 face bodies are pressed into by pass deformation 15-20%
14-18 faces body；Intermediate annealing process is 470-510 DEG C of insulation 0.5-1.5h, and intermediate anneal temperature is once low by 10 than before every time
℃。
4. the integrated preparation technology of forging rolling of the strong high temperature resistant magnesium alloy shell part of the major diameter superelevation according to claim 1, it is special
Levy and be：Ingot blank 4-6h is incubated at 480-520 DEG C before ring-rolling in step G, cone roller is high to application 2- along rolled piece during rolling
4mm drafts, intermediate annealing process is 470-510 DEG C of insulation 0.5-2h, and insulation reduces by 10 DEG C than a preceding temperature every time, most
The housing component that maximum gauge is φ 1700mm is prepared eventually.
5. the integrated preparation technology of forging rolling of the strong high temperature resistant magnesium alloy shell part of the major diameter superelevation according to claim 1, it is special
Levy and be：Solution treatment system is 410-430 DEG C of insulation 45-90min in step H, and institution of prescription is 210-230 DEG C of insulation 10-
20h。
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110877086A (en) * | 2019-12-13 | 2020-03-13 | 中国兵器工业第五九研究所 | Preparation method of fine-grain large-size magnesium alloy section |
| CN112481536A (en) * | 2020-11-04 | 2021-03-12 | 长沙新材料产业研究院有限公司 | Magnesium alloy thick plate and preparation method thereof |
| CN113635000A (en) * | 2021-08-27 | 2021-11-12 | 中国兵器工业第五九研究所 | Extrusion-rolling composite forming method for magnesium alloy ring piece |
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| CN110877086A (en) * | 2019-12-13 | 2020-03-13 | 中国兵器工业第五九研究所 | Preparation method of fine-grain large-size magnesium alloy section |
| CN112481536A (en) * | 2020-11-04 | 2021-03-12 | 长沙新材料产业研究院有限公司 | Magnesium alloy thick plate and preparation method thereof |
| CN113635000A (en) * | 2021-08-27 | 2021-11-12 | 中国兵器工业第五九研究所 | Extrusion-rolling composite forming method for magnesium alloy ring piece |
| CN113635000B (en) * | 2021-08-27 | 2023-08-18 | 中国兵器工业第五九研究所 | Extrusion-rolling composite forming method for magnesium alloy ring piece |
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