CN106623429A - Rolling forming method for low-oxygen-content aero titanium alloy precision thin sheet - Google Patents
Rolling forming method for low-oxygen-content aero titanium alloy precision thin sheet Download PDFInfo
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- CN106623429A CN106623429A CN201610921646.2A CN201610921646A CN106623429A CN 106623429 A CN106623429 A CN 106623429A CN 201610921646 A CN201610921646 A CN 201610921646A CN 106623429 A CN106623429 A CN 106623429A
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- oxygen content
- aero titanium
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- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 54
- 238000005096 rolling process Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000000137 annealing Methods 0.000 claims abstract description 38
- 238000005097 cold rolling Methods 0.000 claims abstract description 22
- 239000002994 raw material Substances 0.000 claims abstract description 16
- 238000001953 recrystallisation Methods 0.000 claims abstract description 16
- 238000005470 impregnation Methods 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 238000005520 cutting process Methods 0.000 claims abstract description 9
- 238000004806 packaging method and process Methods 0.000 claims abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 29
- 239000001301 oxygen Substances 0.000 claims description 29
- 238000007598 dipping method Methods 0.000 claims description 18
- 238000000465 moulding Methods 0.000 claims description 16
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 9
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum oxide Inorganic materials [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 230000003746 surface roughness Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 229910011006 Ti(SO4)2 Inorganic materials 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 5
- 230000009467 reduction Effects 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000005238 degreasing Methods 0.000 abstract 2
- 239000004615 ingredient Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 12
- 238000001816 cooling Methods 0.000 description 8
- 230000014759 maintenance of location Effects 0.000 description 6
- 239000004035 construction material Substances 0.000 description 4
- 238000011109 contamination Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 210000000744 eyelid Anatomy 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 230000007954 hypoxia Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000883 Ti6Al4V Inorganic materials 0.000 description 1
- 239000011157 advanced composite material Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- CNKHSLKYRMDDNQ-UHFFFAOYSA-N halofenozide Chemical compound C=1C=CC=CC=1C(=O)N(C(C)(C)C)NC(=O)C1=CC=C(Cl)C=C1 CNKHSLKYRMDDNQ-UHFFFAOYSA-N 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/30—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process
-
- 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
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
- C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon
Abstract
The invention discloses a rolling forming method for a low-oxygen-content aero titanium alloy precision thin sheet. According to the rolling forming method, impregnation is performed on a primarily rolled sheet, which is primarily rolled and degreased, with an impregnation liquid containing specific ingredients, and further recrystallization annealing and secondary rolling are conducted. The rolling forming method particularly comprises the following steps: taking an aero titanium alloy sheet as the raw materials, performing twenty-high rolling, degreasing, impregnating, performing recrystallization annealing, conducting secondary cold rolling by a twenty-high rolling mill, degreasing, performing stress relief annealing, performing stretcher straightening, longitudinally cutting/transversely cutting, examining, packaging and the like. The titanium alloy precision thin sheet has the thickness tolerance of +/- 0.003 mm, the camber of 0.1-0.25 mm/1 m, the surface quality of No.3, and the grain size of 7-8 level, and is uniformly distributed in internal stress, free from anisotropism and excellent in follow-up plastic formability. The rolling forming method is simple and easy, low in cost and high in product quality and production efficiency.
Description
Technical field
The present invention relates to a kind of rolling processing method of aero titanium alloy precision sheet, specifically a kind of hypoxia contains
The method for rolling and molding of amount aero titanium alloy precision sheet.
Background technology
To ensure that aircraft body structure has enough strength and stiffness, and mitigate architecture quality, generally using specific strength,
The high material of specific stiffness.In terms of housing construction material, the same aluminium alloy of advanced composite material, high strength steel, titanium alloy together by
It is classified as four big structure materials.Titanium alloy material because intensity is high, lightweight, damage tolerance is high and the features such as good corrosion resistance, one
Directly it is that instead of the desired metallic material of steel in aircaft configuration.With the raising of aircraft speed, titanium alloy answering on body
It is main to make aircraft rear body and composite element joint, beam etc. with substantially increase, at present using it is most be Ti-6Al-
4V.Titanium alloy can make various thin plates, foil, tubing and silk material, replace 30CrMnSiA etc., be a kind of more satisfactory sheet metal
Load-carrying member material.At present the U.S. applies on the aircrafts such as B-1b, F-15, F-16, F-18, F-22.In F-22 construction weights
The proportion very little that traditional steel and aluminium alloy is accounted for, and 41% titanium alloy and 27% composite have been used in a large number, this is favourable
In the stealth and thermostability that improve aircraft, mitigate body weight, increase cylinder block strength.In state-of-the art seating plane --- it is empty
On objective A380, the consumption of titanium alloy increases to 10% from the 5%～7% of original duty visitor's aero-structure weight.
The conventional version of aircraft body structure has eyelid covering frame structure, integral panel structure, honeycomb interlayer or fills out
Feed collet Rotating fields, pressurising shell structure etc..In recent years, the flight speed of aircraft is from subsonic speed to the even high ultrasound of supersonic speed
Speed development.When Mach 2 ship 2～3, aircraft surface temperature is up to 200 DEG C～300 DEG C.For this purpose, many components of aircraft,
Such as housing, fuel tank, air intake duct, empennage and trouserss skeleton select in a large number titanium alloy.The U.S. adopts Ti-6Al-4V titanium alloys
The structural members such as fuel tank, air intake duct, the empennage of battleax cruise missile of thin plate manufacture, quality mitigates 20%～35%, manufacturing expenses
With 20%～60% can be reduced.As eyelid covering frame structure, integral panel structure, honeycomb interlayer or stuffing sandwich structure, pressurising
The importance of the titanium-alloy thin-plate material of shell structure raw material is highlighted all the more.
Because aviation titanium alloy material rolling performance is poor, in addition domestic manufacturer's rolling technique, equipment fall behind, using fire more
The aero titanium alloy thin plate of the domestic thickness≤1mm (especially below 0.8mm) of secondary hot rolling and cladding ply rolling technique productions and state
There is larger quality gap in outer like product, generally existing content of surface oxygen is high, microscopic structure is poor, surface smoothness is low, thickness
The shortcomings of deviation is big.In follow-up titanium alloy member forming process, usually can cause thin plate panel beating/pipe crimping, welding performance it is poor,
Superplastic forming is poor, fatigue strength is poor, causes the aerospace vehicle titanium alloy member dimensional accuracy such as aircraft, guided missile unmanageable
Technical barrier.
The B of CN 101817015 disclose a kind of method for rolling and molding of low-oxygen content aero titanium alloy precision sheet, its
It is raw material that thickness is adopted for the aero titanium alloy plate of 1-5mm, through once cold rolling rolling, defat, recrystallization annealing, secondary cold-rolling
Rolling, defat, stress relief annealing, strength is aligned, and rip cutting/crosscutting, inspection, packaging and storage obtain low-oxygen content aero titanium alloy
Precision sheet finished product.But, the thickness deviation of the low-oxygen content aero titanium alloy precision sheet finished product is still larger, ±
0.005mm, camber is larger, and in 0.3-1mm/1m, and crystal grain is still relatively thick, in follow-up titanium alloy member forming process, still
There are problems that welding performance is poor, superplastic forming is poor, fatigue strength.
The content of the invention
For the above-mentioned problems in the prior art, it is an object of the invention to provide a kind of low-oxygen content aero titanium alloy
The method for rolling and molding of precision sheet.The light sheet combination property of the method roll forming is superior, its thickness deviation for ±
0.003mm, camber 0.1-0.25mm/1m, surface quality is NO.3, and grain size reaches 7-8 levels, fully meets Aero-Space
The performance need of device construction material, and production method is simple, low cost, efficiency high.
The purpose of the present invention is achieved through the following technical solutions：
A kind of method for rolling and molding of low-oxygen content aero titanium alloy precision sheet, the method for rolling and molding passes through two
Secondary mill cold rolling, and in once cold rolling rolling and after the completion of defat, impregnated with specific impregnation liquid, obtain
Low-oxygen content aero titanium alloy precision sheet, comprises the following steps that：
1) raw material prepares, and it is raw material to adopt thickness for the aero titanium alloy plate of 1-5mm；
2) raw material is carried out into mill once cold rolling rolling, obtains just rolling sheets；
3) by first rolling sheets defat；
4) using impregnation liquid to defat after first rolling sheets impregnate；
5) by dipping after first rolling sheets recrystallization annealing is carried out under reduction or inert atmosphere protection, cool down；
6) by recrystallization annealing after first rolling sheets carry out mill secondary cold-rolling rolling, obtain light sheet；
7) by the light sheet defat for obtaining；
8) light sheet after defat is carried out into stress relief annealing under reduction or inert atmosphere protection, is cooled down；
9) light sheet after stress relief annealing is carried out into stretcher leveling, rip cutting/crosscutting, inspection, packaging and storage, obtains hypoxia
Content aero titanium alloy precision sheet finished product.
Preferably, step 1) in, aero titanium alloy board raw material is TC4 or TA15.
Preferably, step 4) in, impregnation liquid into being grouped into Ti (SO4)260-65g/L, BiCl350-60g/L,
Fe3O40.02-0.04g/L, La2O36-8.5g/L, balance of water.
Preferably, Ti (SO4)2Content be 60-65g/L, for example can be 60g/L, 62g/L, 63g/L, 64g/L or 65g/L
Deng.
Preferably, BiCl3Content be 50-60g/L, for example can be 50g/L, 52g/L, 55g/L, 57.5g/L or 60g/L
Deng.
Preferably, Fe3O4Content be 0.02-0.04g/L, for example can for 0.02g/L, 0.03g/L, 0.035g/L or
0.04g/L etc..
Preferably, La2O3Content be 6-8.5g/L, for example can be for 6g/L, 7g/L, 7.5g/L, 8g/L or 8.5g/L etc..
Preferably, step 4) dipping temperature be 70-85 DEG C, for example can be 70 DEG C, 73 DEG C, 75 DEG C, 78 DEG C, 80 DEG C or 85
DEG C etc..
Preferably, step 4) time of dipping is 4-9h, for example can be for 4h, 5h, 6.5h, 7.5h, 8h or 9h etc..
Preferably, step 5) recrystallization annealing temperature be 800-830 DEG C.
Preferably, step 5) recrystallization annealing time be 15-25 minutes.
Preferably, step 6) in, the work roll surface roughness of mill is controlled at Ra0.2-0.3 μm, 20 rollers
Milling train secondary cold-rolling pass deformation rate 50-65%.
Preferably, step 8) in stress relief annealing temperature be 550-620 DEG C, minute time 15-20 of stress relief annealing.
Compared with prior art, the invention has the advantages that：
The present invention is impregnated by the impregnation liquid using special component to the first rolling sheets once rolled and after defat, and
Further recrystallization annealing, secondary rolling so that the low-oxygen content aero titanium alloy precision sheet combination property for obtaining is superior,
Its thickness deviation is ± 0.003mm, and camber 0.1-0.25mm/1m, surface quality is NO.3, and grain size reaches 7-8 levels, fully
Meet the performance need of aerospace vehicle construction material.Production method is simple, low cost, efficiency high.
Description of the drawings
Fig. 1 is the process chart of the present invention.
Specific embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by specific embodiment.
Embodiment 1
Adopt thickness for 5mm cold rolling 2B surfaces TC4 titanium-alloy thin-plates be raw material, the rolling of Jing mills, defat,
Dipping, bright annealing, mill secondary cold-rolling, defat, bright annealing, stretcher leveling, rip cutting/crosscutting, check, be packaged into
The operations such as storehouse are made.Wherein, impregnation liquid into being grouped into：Ti(SO4)260g/L, BiCl360g/L, Fe3O40.02g/L,
La2O38.5g/L, balance of water；The temperature of dipping is 70 DEG C, and the time of dipping is 9h；Work in mill secondary cold-rolling
It is Ra0.2 μm to make roll surface roughness, pass deformation rate 65%；Recrystallization annealing temperature is 800 DEG C, temperature retention time 25 minutes,
Protection of reducing atmosphere, quick cooling；Stress relief annealing temperature is 550 DEG C, temperature retention time 20 minutes, protection of reducing atmosphere, quickly
Cooling.Obtained low-oxygen content aero titanium alloy precision sheet surface does not have the surface contamination layers such as any oxygen-rich layer, α layers,
Internal stress is evenly distributed, and without anisotropy, follow-up plastic formability is good.Its thickness is 0.8mm ± 0.003mm, and camber is
0.1mm/1m, surface quality is No.3, and grain size reaches 7 grades.
Embodiment 2
Adopt thickness for 3mm cold rolling 2B surfaces TC4 titanium-alloy thin-plates be raw material, the rolling of Jing mills, defat,
Dipping, bright annealing, mill secondary cold-rolling, defat, bright annealing, stretcher leveling, rip cutting/crosscutting, check, be packaged into
The operations such as storehouse are made.Wherein, impregnation liquid into being grouped into：Ti(SO4)265g/L, BiCl350g/L, Fe3O40.04g/L,
La2O36g/L, balance of water；The temperature of dipping is 85 DEG C, and the time of dipping is 4h；Work in mill secondary cold-rolling
Roll surface roughness is Ra0.3 μm, pass deformation rate 50%；Recrystallization annealing temperature is 830 DEG C, temperature retention time 15 minutes, also
Former atmosphere protection, quick cooling；Stress relief annealing temperature is 620 DEG C, temperature retention time 15 minutes, protection of reducing atmosphere, fast quickly cooling
But.Obtained low-oxygen content aero titanium alloy precision sheet surface should not have the surface contamination layers such as any oxygen-rich layer, α layers,
Internal stress is evenly distributed, and without anisotropy, follow-up plastic formability is good.Its thickness is 0.5mm ± 0.003mm, and camber is
0.15mm/1m, surface quality is No.3, and grain size reaches 8 grades.
Embodiment 3
It is raw material that thickness is adopted for the TA15 titanium-alloy thin-plates on the cold rolling 2B surfaces of 1mm, and Jing mills are rolled, taken off
Fat, dipping, bright annealing, mill secondary cold-rolling, defat, bright annealing, stretcher leveling, rip cutting/crosscutting, inspection, bag
Load the operations such as storehouse to make.Wherein, impregnation liquid into being grouped into：Ti(SO4)262g/L, BiCl355g/L, Fe3O4
0.03g/L, La2O37.5g/L, balance of water；The temperature of dipping is 78 DEG C, and the time of dipping is 5h；Mill is secondary cold
Work roll surface roughness in rolling is Ra0.25 μm, pass deformation rate 60%；Recrystallization annealing temperature is 815 DEG C, during insulation
Between 20 minutes, protection of reducing atmosphere, quick cooling；Stress relief annealing temperature is 590 DEG C, temperature retention time 17 minutes, reducing atmosphere
Protection, quick cooling.Obtained low-oxygen content aero titanium alloy precision sheet surface should be without any oxygen-rich layer, α layers etc.
Surface contamination layer, internal stress is evenly distributed, and without anisotropy, follow-up plastic formability is good.Its thickness is 0.3mm ± 0.003mm,
Camber is 0.2mm/1m, and surface quality is No.3, and grain size reaches 7 grades.
Embodiment 4
It is raw material that thickness is adopted for the TA15 titanium-alloy thin-plates on the cold rolling 2B surfaces of 1mm, and Jing mills are rolled, taken off
Fat, dipping, bright annealing, mill secondary cold-rolling, defat, bright annealing, stretcher leveling, rip cutting/crosscutting, inspection, bag
Load the operations such as storehouse to make.Wherein, impregnation liquid into being grouped into：Ti(SO4)263g/L, BiCl356g/L, Fe3O4
0.025g/L, La2O37g/L, balance of water；The temperature of dipping is 77 DEG C, and the time of dipping is 6h；Mill is secondary cold
Work roll surface roughness in rolling is Ra0.28 μm, pass deformation rate 55%；Recrystallization annealing temperature is 820 DEG C, during insulation
Between 20 minutes, protection of reducing atmosphere, quick cooling；Stress relief annealing temperature is 610 DEG C, temperature retention time 16 minutes, reducing atmosphere
Protection, quick cooling.Obtained low-oxygen content aero titanium alloy precision sheet surface should be without any oxygen-rich layer, α layers etc.
Surface contamination layer, internal stress is evenly distributed, and without anisotropy, follow-up plastic formability is good.Its thickness is 0.4mm ± 0.003mm,
Camber is 0.22mm/1m, and surface quality is No.3, and grain size reaches 8 grades.
Production method of the present invention is simple, low cost, the low-oxygen content aero titanium alloy precision sheet synthesis for obtaining
Superior performance, fully meets the performance need of aerospace vehicle construction material.
Applicant states that the present invention illustrates the method detailed of the present invention, but the present invention not office by above-described embodiment
It is limited to above-mentioned method detailed, that is, does not mean that the present invention has to rely on above-mentioned method detailed and could implement.Art
Technical staff it will be clearly understood that any improvement in the present invention, the equivalence replacement and auxiliary element to each raw material of product of the present invention
Addition, selection of concrete mode etc., within the scope of all falling within protection scope of the present invention and disclosure.
Claims (10)
1. a kind of method for rolling and molding of low-oxygen content aero titanium alloy precision sheet, it is characterised in that methods described includes
Following steps：
1) raw material prepares, and it is raw material to adopt thickness for the aero titanium alloy plate of 1-5mm；
2) raw material is carried out into mill once cold rolling rolling, obtains just rolling sheets；
3) by first rolling sheets defat；
4) using impregnation liquid to defat after first rolling sheets impregnate；
5) sheet material after dipping is carried out into recrystallization annealing under reduction or inert atmosphere protection, is cooled down；
6) by recrystallization annealing after first rolling sheets carry out mill secondary cold-rolling rolling, obtain light sheet；
7) by the light sheet defat for obtaining；
8) light sheet after defat is carried out into stress relief annealing under reduction or inert atmosphere protection, is cooled down；
9) light sheet after stress relief annealing is carried out into stretcher leveling, rip cutting/crosscutting, inspection, packaging and storage, obtains low oxygen content
Aero titanium alloy precision sheet finished product.
2. the method for rolling and molding of low-oxygen content aero titanium alloy precision sheet according to claim 1, its feature exists
In, the impregnation liquid into being grouped into：Ti(SO4)260-65g/L, BiCl350-60g/L, Fe3O40.02-0.04g/L,
La2O36-8.5g/L, balance of water.
3. the method for rolling and molding of low-oxygen content aero titanium alloy precision sheet according to claim 1, its feature exists
In the temperature of the dipping is 70 DEG C -85 DEG C.
4. the method for rolling and molding of low-oxygen content aero titanium alloy precision sheet according to claim 1, its feature exists
In the time of the dipping is 4-9h.
5. the method for rolling and molding of the low-oxygen content aero titanium alloy precision sheet according to any one of claim 1-4,
Characterized in that, the temperature of the recrystallization annealing is 800-830 DEG C.
6. the method for rolling and molding of the low-oxygen content aero titanium alloy precision sheet according to any one of claim 1-5,
Characterized in that, the time of the recrystallization annealing is 15-25 minutes.
7. the method for rolling and molding of the low-oxygen content aero titanium alloy precision sheet according to any one of claim 1-6,
Characterized in that, in the mill secondary cold-rolling operation of rolling, the work roll surface roughness control of mill
At Ra0.2-0.3 μm, mill secondary cold-rolling pass deformation rate 50-65%.
8. the method for rolling and molding of low-oxygen content aero titanium alloy precision sheet according to claim 1, its feature exists
In the temperature of the stress relief annealing is 550-620 DEG C.
9. the method for rolling and molding of low-oxygen content aero titanium alloy precision sheet according to claim 1, its feature exists
In the time of the stress relief annealing is 15-20 minutes.
10. the method for rolling and molding of the low-oxygen content aero titanium alloy precision sheet according to any one of claim 1-9,
Characterized in that, the aero titanium alloy board raw material is TC4 or TA15.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108994077A (en) * | 2018-06-13 | 2018-12-14 | 昆明理工大学 | A kind of anisotropic milling method of weakening TC4 titanium alloy plate |
| CN113714286A (en) * | 2021-08-31 | 2021-11-30 | 西北有色金属研究院 | Preparation method of TA15 titanium alloy thin strip |
| CN114798798A (en) * | 2022-04-24 | 2022-07-29 | 陕西创能新材料科技有限公司 | Preparation method of TB8 titanium alloy plate |
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