CN107723638B - A kind of preparation method of deep-draw titanium plate - Google Patents
A kind of preparation method of deep-draw titanium plate Download PDFInfo
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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
- C22F1/16—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
A kind of preparation method of deep-draw titanium plate, using O content≤0.05%, N content≤0.006%, Fe content≤0.05% be not less than 0AThe titanium sponge of grade is as raw material, melting and casting and forging are carried out to it, and no less than pulling twice and/or jumping-up are carried out in forging process, to prepare the slab with good tissue, slight texture, subsequent slab hot rolling, cold rolling, commutation roll and combine annealing and obtain that crystal grain is suitable for, performance is qualified, Erichsen number higher Titanium board material the step of subsequent processing.This method can make that the production procedure of Titanium board material is shorter, efficiency is higher, deep drawability is good.
Description
Technical field
The invention belongs to the technical fields of titanium plate processing, and in particular to a kind of preparation method of deep-draw titanium plate.
Background technique
Titanium is that uniquely have the metal of affinity interaction to human body in all metals, do not have any injury to human body, with human body knot
Conjunction will not generate rejection.Titanium has many excellent performances, such as density is small, specific strength is high and corrosion-resistant, made of titanium
Daily necessity have the advantages that it is light securely, it is non-corrosive, nontoxic, antibacterial and without hypersensitive, therefore in daily necessities
Field has broad application prospects.
Relative to other machining process, pressed part is with quality is stable, interchangeability is good, can be used directly, the energy
The advantages that consuming low, high production efficiency.Titanium belongs to difficult stamping metal, the stamping part of titanium plate using relatively fewer,
For titanium stamp forming technology have it is to be developed with improve, for it is stamping also studied with the production technology of titanium plate it is less.Punching
Pressure titanium plate requires have good processing performance, i.e., preferable punching performance, guarantee has enough plasticity, do not crack, by
It is small in the yield tensile ratio height of titanium, plastically deforming area, it is unfavorable for deep hole pinching.Titanium is close-packed hexagonal structure, plasticity can not show a candle to steel,
The metals such as aluminium and copper, punching performance is relatively poor, and there is titanium apparent anisotropy, its forming property to be influenced by anisotropic
It is very big.
There are many factor for influencing titanium plate press formability, ingredient, mechanical property, processing performance and tissue including titanium,
External factor needs to be measured with composite target there are also mold, stamping process parameters and lubricant etc..Mechanical property includes
Intensity, yield tensile ratio, plasticity, strain ratio and hardenability value etc.；Processing performance includes clod wash, bending springback, the punching press limit and punching press
Performance etc..
Stamping deformation is more violent, and the impurity contents such as O, N, Fe are low in titanium plate, then the plasticity height of material, yield strength
It is low, be conducive to stamping.The intensity of material is high, forming property is good, and yield strength is smaller, and stamping form accuracy is got over
Height, elongation percentage is bigger, and bulging performance is better；Elasticity modulus is high, then springback capacity is small, element precision is high after forming.Punching press titanium plate with
Based on isometric α tissue, crystal grain is larger be conducive to stamping but crystal grain it is excessively coarse when Pressing Deformation can cause surface wrinkling,
Excessive or too small crystal grain will cause Erichsen number decline, it is therefore desirable to suitable crystallite dimension.Hardenability value n and it is generous to answer
No-load voltage ratio r has larger impact to punching performance, the two indexes have anisotropy, n value is big represent material homogeneous deformation ability it is strong,
The total deformation of auxetic is bigger；The higher deep drawing quality of r value is better, r value compared with it is high indicate plate width direction resistance of deformation it is small and in plate
The resistance of deformation in thick direction is big, and material is not easy to be thinned, be not easily broken；The big material punching performance of work hardening index n value is good,
Erichsen number is higher, and bulging performance is better, in addition, the thicker then Erichsen number of plate is bigger, formability is also more quite a lot of.
In addition, texture also has larger impact to punching performance, pure titanium carries out sliding deformation when rolling, c axis direction generates change
Shape is relatively difficult, therefore the texture structure of Titanium board is generally indicated with bottom surface pole figure, and the texture of pure titanium indicates mainly there is three with pole figure
Kind: center pole type, α rolling stable orientation type and Boundary-Type.Center pole type is to carry out tandem rolling and ring in α temperature range
Roll middle formation；Stable orientation type is formed in α temperature range unidirection rolling；Boundary-Type is heated in β temperature range, and in α
Temperature range starts to be formed in rolling and the unidirection rolling terminated.Produce that titanium plate band is big with yield, effect using coil type mode
The advantages that rate is high, process is short, the uniform thickness of at low cost, performance is accurate can produce plate (the most thin left side 0.5mm of more thin gauge
It is right), thickness accurate high (the achievable 0 ~ 0.05mm tolerance of minimum), Cold-rolled Pure titanium roll bending small (thin plate realizes 0 ~ 0.1mm) with plate difference
It is to be produced in α temperature range unidirection rolling at the mode of band, so texture is all the 2nd seed type, in order to change texture group
It knits, mitigate adverse effect to punching press, it is necessary to appropriate adjustment rolling deformation mode.
The titanium plate thickness that articles for daily use use is generally 0.5 ~ 1.5mm, makes the titanium plate piece of daily necessity such as tableware, generally
Punching press or deep-draw processing are carried out, there are special requirement to the ingredient of titanium, mechanical property, processing performance and grain structure etc., because
This, needs ingredient, production technology and the annealing process of special designing material.Invention describes the Titanium boards for being suitable for deep-draw
At component selections, melting production and rolling mill practice etc..
Summary of the invention
The object of the present invention is to provide a kind of titanium plate preparation methods of deep-draw, select suitable raw material melting ingot casting, forging
Good tissue, slight texture, hot rolling combination cold rolling and annealing are obtained after making, obtain crystal grain suitable (3.5 ~ 7.5 grades of grain size),
Performance is qualified, the higher Titanium board material of Erichsen number, makes that the production procedure of Titanium board material is shorter, efficiency is higher, deep drawability is good.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that: a kind of preparation side of deep-draw titanium plate
Method includes the following steps:
(1) the use of granularity is 3 ~ 12.7mm, is not less than 0AThe titanium sponge smelting ingot casting of grade is then no less than ingot casting forging
Two fire, and no less than pulling twice and/or jumping-up are carried out in forging process, each jumping-up or pulling deflection are not less than
30%, as-cast structure is crushed and obtains recrystallized structure, the more uniform TA1 slab of crystal grain, requires O in the ingredient of the titanium sponge
Content≤0.05%, N content≤0.006%, Fe content≤0.05%；
(2) step (1) TA1 heating of plate blank obtained to 850 ~ 930 DEG C and is kept the temperature using natural gas, is obtained through rolling
The hot rolled coil of 3 ~ 6mm thickness, then progress (700 ~ 780) DEG C × (2 ~ 30) min atmosphere continuous annealing obtains recrystallized structure, connects
Carry out ball blast and pickling surface oxide layer is removed；
(3) step (2) are handled under tension along the length direction of titanium volume by resulting hot rolled coil using reversable mill
Multi-pass cold rolling is carried out, single pass heavy deformation >=5%, rolling process total deformation >=50%, total rolling process number is no more than 2, when a rolling process
After rolling, surface degreasing degreasing is rolled up in titanium, semi-finished product annealing is then carried out, surface defect is handled later, and titanium is rolled up
Individual titanium plate of of length no more than 1300mm is cut into, then carries out commutation cold rolling along the width direction of titanium plate, in the cold rolling that commutates
Rate≤3m/s of rolling, commutate cold rolling total deformation >=30%；The titanium plate width after the cold rolling and cutting of titanium volume length direction
After the cold rolling in direction, finished product titanium plate is obtained；
(4) step (3) finished product titanium plate obtained is annealed, and the titanium plate surface after annealing is handled, obtained
To qualified TA1 production board.
Preferably, it when annealing to finished product titanium plate, is annealed using air atmosphere, titanium plate is carried out to press in resistance furnace orthopedic
Annealing, 630 ~ 700 DEG C of annealing temperature, 2 ~ 10h of soaking time, specific annealing heat preservation, ingredient, total thickness of the soaking time according to titanium plate
Degree and cold rolling reduction determine.
Preferably, when annealing to finished product titanium plate, titanium plate is placed in vacuum bell furnace and carries out vacuum annealing, vacuum degree
Better than 10-1Pa, 630 ~ 700 DEG C of annealing temperature, 3 ~ 10h of soaking time, applying argon gas reinforcement heat follows when being warming up to 500 DEG C or more
Ring, annealing schedule are determined according to the coil diameter that titanium plate ingredient, cold rolling reduction and titanium are rolled up.
Preferably, in the step (4), when handling the surface of titanium plate after annealing, using alkali pickling processes or spray
Sand+pickling processes or sanding processing；If titanium plate surface is defective, alkali pickling processes or sandblasting+acid are carried out after mechanical reconditioning
Wash processing or sanding processing.
Preferably, the method for the described semi-finished product annealing is: annealing temperature is 660 DEG C, be cooled to after annealing 200 DEG C with
Under, then come out of the stove and be air-cooled to room temperature.
Compared with prior art, the beneficial effects of the present invention are:
(1) deep-draw titanium plate punching press effect
Deep-draw prepares titanium pot, titanium cup and titanium shell with titanium plate punching press, and maximum press depth may be implemented not less than 90mm；Titanium
The anisotropy of plate is smaller, and intensity index anisotropy difference is no more than 20%.
(2) ingredient of deep-draw titanium plate, specification and quality
Major impurity constituent content meets O≤0.06%, N≤0.008%, Fe≤0.1% in pure titanium ingot casting, and other impurities contain
Amount meets TA1 requirement, 3 ~ 8t of ingot casting weight in GB/T 3621.1-2007.The deep-draw that 0.5 ~ 1.5mm of thickness range can be produced is used
TA1 strip, monovolume 3 ~ 8t of maximum weight, titanium plate maximum width can reach 1250mm, and high production efficiency, presentation quality be good, cost
It is lower, it is higher with the mechanical property of batch plate and the uniformity degree of microstructure；Be stably controlled with plate difference≤
0.1mm, whole plate (thickness * 1000*2000mm) unevenness≤8mm/m.
(3) deep-draw titanium plate performance and tissue
The important parameter of deep-draw sheet material forming is yield strength, yield tensile ratio, cupping, hardenability value n and plastic strain value r
Deng in addition these parameters and anisotropy relationship are very big.The titanium plate with a thickness of 0.5 ~ 1.5mm, intensity≤350MPa, surrender is made
Intensity≤270MPa, Erichsen number > 10mm.Elongation strain hardenability value n is 0.1 or more, and r is 0.4 or more for plastic strain value；Separately
Outside, by relatively adequately forging and recrystallization, the anisotropy of titanium plate is significant, rolling direction to vertically roll to performance change
≤20%.3.5 ~ 7 grades of the grain colony of titanium plate, the grain size difference of entire volume Strip be no more than 1.5 grades, individual titanium plate tissue compared with
Uniformly, grain size number difference is no more than 0.5 grade.
(4) the production process control of titanium volume
It is forged by upsetting pull and obtains ingredient and organize more uniform slab, and alleviate texture situation.When titanium coiled material rolls
Rolling process deformation rate is not less than 50%, carries out the rolling process deflection of commutation spiral-plate cold rolling after rolling again not less than 30%, makes to deform energy
Deep enough whole thickness simultaneously makes the broken of crystal grain and recrystallization sufficiently, the more uniform grain structure obtained, at the same the plasticity of titanium plate compared with
Height, deep drawability are good.
Specific embodiment
Section Example of the invention described further below, but the present invention is not limited to this, for those skilled in the art
For member, under the premise of not departing from the method for the present invention, various modifications and improvements can be made, should belong to guarantor of the invention
Protect range.
Embodiment 1: a kind of preparation method of deep-draw titanium plate includes the following steps:
(1) selecting granularity is 3 ~ 8mm not less than 0AGrade titanium sponge carries out two using German ALD vacuum consumable electrode arc furnace
Secondary melting is prepared into the TA1 ingot casting of diameter of phi 800mm or so, O content≤0.06%, N content≤0.006%, Fe content in ingot casting
≤ 0.03%, then to three fire of ingot casting forging, pulling and twice jumping-up twice are carried out altogether, each jumping-up and pulling deflection are not
Less than 30%, using obtained behind shaping, milling face flaw detection grade reach A grades and the more uniform TA1 plate of recrystallized structure, crystal grain
Base, slab nominal size is 150 × 1270 × 5000mm, described to be not less than 0AGrade titanium sponge ingredient in require O content≤
0.05%, N content≤0.006%, Fe content≤0.05%；
(2) step (1) TA1 heating of plate blank obtained to 900 ± 15 DEG C and is kept the temperature using natural gas, is obtained through rolling
The hot rolled coil of 4mm thickness then carries out 750 DEG C of ± 15 DEG C × 10min atmosphere continuous annealings and obtains recrystallized structure, then carries out
Ball blast and pickling remove surface oxide layer, and TA1 volumes of grain size of hot-roll annealing is 8 grades or so；
(3) step (2) are handled under tension along the length direction of titanium volume by resulting hot rolled coil using reversable mill
Multi-pass cold rolling, single pass heavy deformation >=5%, rolling process total deformation >=50% are carried out, total rolling process number is 2, two rolling process deformations
Rate is 52% and 63% respectively；After rolling process rolling, surface degreasing degreasing is rolled up to titanium, surface defect is handled later, and
Individual titanium plate that titanium volume is cut into of length no more than 1300mm, then carries out commutation cold rolling along the width direction of titanium plate, commutates
Rate≤the 3m/s rolled in cold rolling, commutate cold rolling total deformation >=30%；The titanium after the cold rolling and cutting of titanium volume length direction
After the cold rolling in board width direction, the finished product titanium plate with a thickness of 0.7mm is obtained；
(4) step (3) finished product titanium plate obtained is subjected to vacuum annealing, vacuum degree is better than 10-1Pa, annealing temperature are
680 DEG C, soaking time 8h, applying argon gas reinforces recycle heat when being warming up to 500 DEG C or more, and 550 DEG C or more of temperature-fall period is suitable
When slowly, prevent from cooling down it is too fast cause titanium plate to be bonded, to obtain qualified TA1 production board.
In the present embodiment, air atmosphere annealing can also be used to the annealing of finished product titanium plate, annealing temperature is 680 DEG C, protects
The warm time is 8h, 550 DEG C or more of temperature-fall period is appropriate slowly, prevent from cooling down it is too fast cause titanium plate to deform, to the titanium after annealing
Plate surface is handled, and qualified TA1 production board is obtained.
1 is shown in Table using the performance and tissue of titanium plate prepared by above method:
1 deep-draw of table 0.7mm thickness finished product TA1 plate performance and tissue
* elongation uses 15mm gauge length；The measurement of n and r is under the conditions of elongation strain 3 ~ 10%.
As can be seen from the above table, after preparing 0.7mm titanium plate using method of the invention, intensity is preferable compared with inductile, edge
Rolling direction intensity is minimum, hardenability value n highest, plastic strain value r are minimum；Transverse strength highest, plasticity are worst, hardening
Index n is minimum, strain value is higher；45 ° of direction intensity and yield strength is minimum, elongation highest, strain value r higher, hardening refer to
Number n is lower.From rolling in terms of the different angle to transverse direction, titanium plate has certain anisotropy but difference is less big.
This batch of titanium plate punching press prepares 220 × 110mm of Φ, 240 × 130mm of Φ, 300 × 180mm of Φ 260 × 150mm and Φ
Titanium pot, using special lube, Sheet Metal Forming Technology be suitable for, punching course is smooth, and punch forming qualification rate is more than 96%, side, bottom
Thinned transition at face and arc transition is more uniform, and flanging does not have wrinkle, ear processed smaller.It is subsequent process, deoil, sandblasting, acid
It is smooth the processes such as to wash and be surface-treated, it is up-to-standard inside and outside titanium pot.
150 × 120mm of Φ titanium pot is prepared with similar technique punching press, punch forming qualification rate is more than 93%, and ear processed is smaller,
Preparation process is smooth, qualified product.
Embodiment 2: a kind of preparation method of deep-draw titanium plate includes the following steps:
(1) select granularity be 8 ~ 12.7mm, be not less than 0AGrade titanium sponge, using EB furnace (electron-beam cold bed furnace) method system
It is standby at TA1 ingot casting, ingot casting thickness 400mm, width 1300mm, O content≤0.055%, N content≤0.0058%, Fe in ingot casting
Content≤0.03% then to three fire of ingot casting forging, and is pulled out during forging and jumping-up, each upsetting twice altogether
Thick and pulling deflection is not less than 30%, using obtained behind shaping, milling face flaw detection grade reach A grades and recrystallized structure, crystalline substance
The more uniform TA1 slab of grain, it is described to be not less than 0AGrade titanium sponge ingredient in require O content≤0.05%, N content≤0.006%,
Fe content≤0.05%；
(2) step (1) TA1 heating of plate blank obtained to 930 DEG C and is kept the temperature using natural gas, obtains 3mm through rolling
The hot rolled coil of thickness then carries out 720 DEG C × 30min atmosphere continuous annealing and obtains recrystallized structure, then carries out ball blast and acid
It washes and removes surface oxide layer, TA1 volumes of grain size of hot-roll annealing is 7.5 grades or so；
(3) step (2) are handled under tension along the length direction of titanium volume by resulting hot rolled coil using reversable mill
Multi-pass cold rolling, single pass heavy deformation >=6%, rolling process total deformation 71% are carried out, total rolling process number is 2；After rolling process rolling,
Titanium roll up surface degreasing degreasing, then carry out semi-finished product annealing, 660 DEG C of semi-finished product annealing temperature, annealing after be cooled to 200 DEG C with
Under, it comes out of the stove air-cooled；After being cooled to room temperature, the smooth of deflection≤2% is carried out, improves plate shape, reduce unevenness；Followed by strong
Straight machine cutting machine, cutting is 1 × 1250(volumes wide after aligning) × 1200mm finished product plate；Then it is carried out along the width direction of titanium plate
Commutate cold rolling, and the rate≤3m/s rolled in the cold rolling that commutates, commutate cold rolling total deformation 40%；Cold rolling through titanium volume length direction
And after cutting after the cold rolling of titanium plate width direction, the finished product titanium plate with a thickness of 0.6mm is obtained；
(4) step (3) finished product titanium plate obtained is subjected to air atmosphere annealing, annealing temperature is 650 DEG C, soaking time
For 6h, 550 DEG C or more of temperature-fall period is appropriate slowly, prevent from cooling down it is too fast cause titanium plate to deform, to the titanium plate surface after annealing
It is handled, obtains qualified TA1 production board.
In the present embodiment, vacuum annealing can also be used in finished product titanium plate, and vacuum degree is better than 10-1Pa, annealing temperature 700
DEG C, soaking time 10h, applying argon gas reinforces recycle heat when being warming up to 500 DEG C or more, and 550 DEG C or more of temperature-fall period is appropriate
Slowly, prevent from cooling down it is too fast cause titanium plate to be bonded, to obtain qualified TA1 production board.
Gained TA1 production board whole plate unevenness≤8mm/m, titanium plate grain size are 4.5 grades, and transverse strength is no more than
330MPa, elongation are more than 60%, and different directions performance number difference is no more than 15%, and anisotropy is smaller.
180 × 90mm of Φ, 200 × 100mm of Φ, 240 × 130mm of Φ 220 × 110mm and Φ are prepared with this batch of titanium plate punching press
Titanium pot, punching course is smooth, and punch forming qualification rate is more than 95%, and titanium pot does not have the unsmooth phenomenon of findable punching press, ear processed
It is smaller；Taper or column titanium cup, upper and lower 40 ~ 120mm of basal diameter, 60 ~ 140mm of height, after punching press can be prepared with punching press
Up-to-standard, smooth surface inside and outside titanium cup.It is subsequent process, deoil, sandblasting, the processes such as pickling and surface treatment it is smooth, titanium pot
With it is up-to-standard inside and outside titanium cup.
Embodiment 3: a kind of preparation method of deep-draw titanium plate includes the following steps:
(1) granularity is selected to be 3 ~ 12.7mm, be not less than 0AGrade titanium sponge, is prepared into TA1 ingot casting, O in ingot casting using VAR furnace
Content≤0.055%, N content≤0.0058%, Fe content≤0.03%, then to three fire of ingot casting forging, and in the process of forging
Pulling and jumping-up twice, each jumping-up and pulling deflection are not less than 30% twice for middle progress, using obtaining behind shaping, milling face
Flaw detection grade reach A grade and the more uniform TA1 slab of recrystallized structure, crystal grain, it is described not less than OAIn the ingredient of grade titanium sponge
It is required that O content≤0.05%, N content≤0.006%, Fe content≤0.05%；
(2) step (1) TA1 heating of plate blank obtained to 850 DEG C and is kept the temperature using natural gas, obtains 6mm through rolling
The hot rolled coil of thickness then carries out 780 DEG C × 2min atmosphere continuous annealing and obtains recrystallized structure, then carries out ball blast and pickling
Surface oxide layer is removed, TA1 volumes of grain size of hot-roll annealing is 7.5 grades or so；
(3) step (2) are handled under tension along the length direction of titanium volume by resulting hot rolled coil using reversable mill
Multi-pass cold rolling, single pass heavy deformation >=6%, rolling process total deformation 71% are carried out, total rolling process number is 2；After rolling process rolling,
Titanium roll up surface degreasing degreasing, then carry out semi-finished product annealing, 660 DEG C of semi-finished product annealing temperature, annealing after be cooled to 200 DEG C with
Under, it comes out of the stove air-cooled；After being cooled to room temperature, the smooth of deflection≤2% is carried out, improves plate shape, reduce unevenness；Followed by strong
Straight machine cutting machine, cutting is 1 × 1250(volumes wide after aligning) × 1200mm finished product plate；Then it is carried out along the width direction of titanium plate
Commutate cold rolling, and the rate≤3m/s rolled in the cold rolling that commutates, commutate cold rolling total deformation 40%；Cold rolling through titanium volume length direction
And after cutting after the cold rolling of titanium plate width direction, the finished product titanium plate with a thickness of 0.6mm is obtained；
(4) step (3) finished product titanium plate obtained is subjected to vacuum annealing in vacuum drying oven, vacuum degree is better than 10-1Pa, it moves back
Fiery temperature is 640 DEG C, soaking time 5h, and applying argon gas reinforces recycle heat, 550 DEG C or more of drop when being warming up to 500 DEG C or more
Warm process is appropriate slowly, prevent from cooling down it is too fast cause titanium plate to be bonded, finally obtain qualified TA1 production board.
In embodiment 3, air atmosphere annealing can also be used in the annealing of finished product titanium plate, when using air atmosphere annealing,
Titanium plate carries out to pressing in resistance furnace orthopedic annealing, 700 DEG C of annealing temperature, soaking time 10h, and to the titanium plate surface after annealing
It is handled, finally obtains qualified TA1 production board.
Claims (5)
1. a kind of preparation method of deep-draw titanium plate, which is characterized in that the preparation method of titanium plate includes the following steps:
(1) the use of granularity is 3 ~ 12.7mm, is not less than 0AThe titanium sponge of grade carries out melting ingot casting, is then no less than to ingot casting forging
Two fire, and no less than pulling twice and/or jumping-up are carried out in forging process, each jumping-up or pulling deflection are not less than
30%, as-cast structure is crushed and obtains recrystallized structure, the more uniform TA1 slab of crystal grain, requires O in the ingredient of the titanium sponge
Content≤0.05%, N content≤0.006%, Fe content≤0.05%；
(2) step (1) TA1 heating of plate blank obtained to 850 ~ 930 DEG C and is kept the temperature using natural gas, through rolling acquisition 3 ~
The hot rolled coil of 6mm thickness, then progress (720 ~ 780) DEG C × (2 ~ 30) min atmosphere continuous annealing obtains recrystallized structure, then
It carries out ball blast and pickling removes surface oxide layer；
(3) step (2) length direction of the resulting hot rolled coil under tension along titanium volume is handled using reversable mill to carry out
Multi-pass cold rolling, single pass heavy deformation >=5%, rolling process total deformation >=50%, total rolling process number are no more than 2, between two rolling processes into
The annealing of row semi-finished product；After rolling process rolling, titanium rolls up surface degreasing degreasing, then carries out at semi-finished product annealing and surface defect
Titanium can be rolled up individual titanium plate for cutting into of length no more than 1300mm, then carry out commutation cold rolling along the width direction of titanium plate by reason,
Rate≤the 3m/s rolled in commutation cold rolling, commutate cold rolling total deformation >=30%；Cold rolling and cutting through titanium volume length direction
Afterwards after the cold rolling of titanium plate width direction, finished product titanium plate is obtained；
(4) step (3) finished product titanium plate obtained is annealed, obtains qualified TA1 production board.
2. a kind of preparation method of deep-draw titanium plate according to claim 1, it is characterised in that: anneal to finished product titanium plate
When, it is annealed using air atmosphere, titanium plate is carried out to press orthopedic annealing, 650 ~ 700 DEG C of annealing temperature, soaking time in resistance furnace
2 ~ 10h, specific annealing heat preservation, soaking time are determined according to the ingredient of titanium plate, overall thickness and cold rolling reduction.
3. a kind of preparation method of deep-draw titanium plate according to claim 1, it is characterised in that: anneal to finished product titanium plate
When, using vacuum annealing, vacuum degree is better than 10-1Pa, 630 ~ 700 DEG C of annealing temperature, 3 ~ 10h of soaking time, be warming up to 500 DEG C with
Applying argon gas reinforces recycle heat when upper, and annealing schedule is determined according to titanium plate ingredient, cold rolling reduction.
4. a kind of preparation method of deep-draw titanium plate according to claim 2, it is characterised in that: annealed using air atmosphere
Afterwards, the surface of titanium plate is handled using alkali pickling processes or sandblasting+pickling processes or sanding；If titanium plate surface is defective,
Alkali pickling processes or sandblasting+pickling processes or sanding processing are carried out after mechanical reconditioning.
5. a kind of preparation method of deep-draw titanium plate according to claim 1, it is characterised in that: the semi-finished product annealing
Method be: annealing temperature be 660 DEG C, 200 DEG C are cooled to after annealing hereinafter, come out of the stove is air-cooled to room temperature again.
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| CN111394669A (en) * | 2020-04-26 | 2020-07-10 | 北京科技大学 | Manufacturing method for reducing anisotropy of pure titanium thin plate strip for deep drawing |
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| CN114101330B (en) * | 2021-11-26 | 2024-03-29 | 中色科技股份有限公司 | Rolling base plate for producing titanium alloy plate |
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