CN104308461B - A kind of titanium alloy tube and production method thereof - Google Patents
A kind of titanium alloy tube and production method thereof Download PDFInfo
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- CN104308461B CN104308461B CN201410424401.XA CN201410424401A CN104308461B CN 104308461 B CN104308461 B CN 104308461B CN 201410424401 A CN201410424401 A CN 201410424401A CN 104308461 B CN104308461 B CN 104308461B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B23/00—Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00, e.g. combined processes planetary tube rolling, auxiliary arrangements, e.g. lubricating, special tube blanks, continuous casting combined with tube rolling
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/04—Apparatus for cleaning or pickling metallic material for cleaning pipes
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Abstract
The present invention relates to a kind of titanium alloy tube and production method thereof, the step of the method is as follows: Sloping Hearth Heating Furnace heating → roll piercing → sizing → band temperature correction is straight → pickling → cold rolling → annealing → band temperature correction directly → white picking.The titanium alloy tube that the method produces has a following characteristic: the titanium alloy tube to external diameter 60.32～88.90mm specification, outer diameter tolerance 0.0mm～+0.79mm, wall thickness tolerance >=10%, meets titanium alloy oil pipe design size tolerance；Yield strength 758～965MPa, tensile strength >=862MPa, elongation percentage >=11.0%, meet the performance of 110ksi grade of steel.
Description
[technical field]
The invention belongs to the production technical field of titanium alloy tube, be specifically related to a kind of titanium alloy tube and production method thereof.
[background technology]
Titanium alloy tube is widely used in petroleum and petrochemical sector；Aerospace field；Military enterprise's product；Nuclear power industry；Pharmacy
Factory's centrifuge, reactor etc..Titanium alloy corrosion resistance is good, and titanium surface forms the oxide-film of one layer of even compact immediately in an atmosphere,
There is the ability that opposing medium corrodes.Generally titanium has good corrosion resistance in oxidisability and neutral medium, at sea water, wet
Corrosion resisting property in chlorine and chloride solution is the most excellent.
When titanium alloy tube is as used heating furnace heating → roll piercing → tube rolling → sizing → cold bed cooling technique to produce, by
In heating-up temperature low (about 1000 DEG C), pierced shell to milling train foreground hollow billet temperature low (typically at about 850～900 DEG C),
During rolling, the plug life-span is low, and the titanium alloy tube defect in inner surface of rolling is many, and flaw detection qualification rate is low, in small dimension titanium alloy tube
Surface mill difficulty.
[summary of the invention]
[solving the technical problem that]
It is an object of the invention to provide the production method of a kind of titanium alloy tube.
It is a further object to provide a kind of titanium alloy tube using aforementioned production method to prepare.
[technical scheme]
The present invention is achieved through the following technical solutions.
The invention provides the production method of a kind of titanium alloy tube, the step of this production method is as follows:
A, heating
The round base made by titanium alloy is placed in the volumetric concentration 2 of remaining oxygen in stove～the Sloping Hearth of the micro-oxidizing atmosphere of 5%
Being heated in heating furnace at temperature 950～1030 DEG C and insulation 20～30min at such a temperature, the titanium alloy after heat is justified
Base；
B, roll piercing
Titanium alloy circle base after the heating of step A is delivered to perforating machine through roller-way after coming out of the stove to carry out roll piercing and obtains outer surface
Temperature 970～the hollow billet of 1030 DEG C；
C, sizing
Hollow billet after roll piercing carries out sizing and obtains titanium alloy hollow forging, and the hollow billet after wherein controlling roll piercing is delivered to
The time of sizing mill is 35～50s, and controls before sizing hollow billet temperature 850～930 DEG C；After sizing, band temperature correction is straight, then air cooling
To room temperature；
D, a pickling
Hollow forging straight for band temperature correction after sizing is placed in by 5～9 weight portion Fluohydric acid .s, 16～22 weight portion nitric acid and 69～79
The temperature 50 of weight parts water composition～the pickle of 70 DEG C carry out a pickling, obtains titanium alloy pipe；
E, cold rolling
By the titanium alloy pipe after a pickling through cold-rolling mill carry out deflection 30～50% a time cold rolling；
F, annealing
Titanium alloy pipe after cold rolling is sent in annealing furnace to be heated to temperature 850～930 DEG C and protects at such a temperature
Temperature 20～30min；Straight immediately followed by band temperature correction；
G, white picking
By annealing aligning after titanium alloy pipe be placed in by 5～9 weight portion Fluohydric acid .s, 16～22 weight portion nitric acid and 69～
The temperature 50 of 79 weight parts water compositions～the pickle of 70 DEG C carry out white picking, i.e. obtains described titanium alloy tube.
According to the preferred embodiment of the present invention, described titanium alloy is made up of following component, by weight:
Al 5.6～6.7%；
V 3.6～4.4%；
Fe≤0.28%；
C≤0.07%；
O≤0.18%；
N≤0.01%；
H≤0.01%；
Surplus Ti.
According to the preferred embodiment of the present invention, described round base a diameter of
According to the preferred embodiment of the present invention, described pickle be by 8 weight portion Fluohydric acid .s, 19 mass parts nitric acid and
73 weight parts water compositions.
According to the preferred embodiment of the present invention, a described pickling and the time of white picking are respectively 5～9min.
According to the preferred embodiment of the present invention, in heating steps, it is residual in the round base made by titanium alloy is placed in stove
The Sloping Hearth Heating Furnace of the volumetric concentration 2 of oxygen amount～the micro-oxidizing atmosphere of 5% is heated to temperature 970～1000 DEG C.
According to the preferred embodiment of the present invention, the deflection of described sizing is 2～25%.
According to the preferred embodiment of the present invention, the temperature that after described sizing, band temperature correction is straight is 520～600 DEG C.
According to the preferred embodiment of the present invention, described cold-rolling mill uses oil lubricating.
Present invention also offers the titanium alloy tube that the production method described in employing prepares, described titanium alloy tube has following
Characteristic:
Titanium alloy tube to external diameter 60.32～88.90mm specification, outer diameter tolerance 0.0mm～+0.79mm, wall thickness tolerance >=-
10%, meet titanium alloy oil pipe design size tolerance；Yield strength 758～965MPa, tensile strength >=862MPa, extend
Rate >=11.0%, meets the performance of 110ksi grade of steel.
The present invention is further illustrated below.
The invention provides the production method of a kind of titanium alloy tube, the step of this production method is as follows:
A, heating
The round base made by titanium alloy is placed in the volumetric concentration 2 of remaining oxygen in stove～the Sloping Hearth of the micro-oxidizing atmosphere of 5%
Being heated in heating furnace at temperature 950～1030 DEG C and insulation 20～30min at such a temperature, the titanium alloy after heat is justified
Base；
In the present invention, the round base made by titanium alloy is placed in Sloping Hearth Heating Furnace and is heated to temperature 950～1030 DEG C,
If being owing to heating-up temperature is too low, titanium alloy resistance of deformation improves along with the reduction of temperature, thus is easily caused perforating machine
Load is too high or rolls the situation of card, it is therefore desirable to higher heating-up temperature is to ensure the stability of perforation procedure；Whereas if add
Hot temperature is too high, and the plasticity of titanium alloy circle base can reduce, and circle base gas-permeable layer thickness can sharply increase, and the hollow billet after roll piercing holds
It is easily generated external defects；Therefore summary influence factor, circle base is heated to temperature 950～1030 in Sloping Hearth Heating Furnace
DEG C, temperature retention time is 20～30min.According to the preferred embodiment of the present invention, circle base is heated to temperature 970～1000 DEG C.
B, roll piercing
Titanium alloy circle base after the heating of step A is delivered to perforating machine through roller-way after coming out of the stove to carry out roll piercing and obtains outer surface
Temperature 970～the hollow billet of 1030 DEG C；
In the present invention, perforating machine uses 76 Plug pipe mill plants.Titanium alloy circle base after heating carries through roller-way
Temperature to perforating machine foreground is 910～990 DEG C, and the hollow billet hull-skin temperature after roll piercing is 970～1030 DEG C.
C, sizing
Hollow billet after roll piercing carries out sizing and obtains titanium alloy hollow forging, and the hollow billet after wherein controlling roll piercing is delivered to
The time of sizing mill is 35～50s, and controls before sizing hollow billet temperature 850～930 DEG C；After sizing, band temperature correction is straight, then air cooling
To room temperature；
In the present invention, the hollow billet after roll piercing carries out sizing and obtains titanium alloy hollow forging, decreases and uses milling train tube rolling
Operation, owing to heating-up temperature is 950～1030 DEG C, pierced shell to milling train foreground hollow billet temperature, typically at 850～900 DEG C, rolls
Time processed, the plug life-span is low, and the titanium alloy tube defect in inner surface of rolling is many, and flaw detection qualification rate is low.Reduce milling train hot rolling tube rolling operation,
Inner surface can be avoided to produce defect, improve inner surface quality.
Controlling hollow billet temperature before sizing is 850～930 DEG C, so that titanium alloy is in β phase → alpha+beta phase in version (two-phase section) temperature
Sizing is carried out in the range of degree, in two-phase section deformation activation energy much larger than titanium alloy free diffusing activation energy, beneficially sizing deformation
During occurrence dynamics recrystallization.According to the preferred embodiment of the present invention, controlling hollow billet temperature before sizing is 900～930 DEG C,
Temperature after sizing is 830～890 DEG C.
After sizing, band temperature correction is straight, to ensure that titanium alloy hollow forging scale on surface crushes, it is simple to oxidation is removed in later stage pickling
Iron sheet and gas-permeable layer.According to the preferred embodiment of the present invention, the temperature that after described sizing, band temperature correction is straight is 520～600 DEG C.
D, a pickling
Hollow forging straight for band temperature correction after sizing is placed in by 5～9 weight portion Fluohydric acid .s, 16～22 weight portion nitric acid and 69～79
The temperature 50 of weight parts water composition～the pickle of 70 DEG C carry out a pickling, obtains titanium alloy pipe；
The hollow forging that after sizing, band temperature correction is straight first carries out pickling, to remove pipe scale on surface and surface gas-permeable layer, just
In follow-up cold rolling, it is to avoid direct cold rolling produces surface defect.
In pickle, the effect of Fluohydric acid. has been corrosion titanium alloy oxide skin and gas-permeable layer, and the effect of nitric acid is to reduce pickling
During titanium alloy inhale hydrogen.According to the preferred embodiment of the present invention, described pickle is by 8 weight portion Fluohydric acid .s, 19 matter
Amount part nitric acid and 73 weight parts waters form.
The temperature 50 of pickle～can ensure that pickle quickly removes iron scale and surface gas-permeable layer when 70 DEG C.Once
The time of pickling is 5～9min, and the time of pickling can control according to quantity and the pickle concentration of titanium alloy tube in descaling bath.
E, cold rolling
By the titanium alloy pipe after a pickling through cold-rolling mill carry out deflection 30～50% a time cold rolling.Want changes persuing
Shape amount more than 30% cold rolling reduction, is to reach the deformation activation energy needed, recrystallization beneficially occurs in annealing process,
Reach crystal grain thinning, improve extension property, but deflection is more than 50%, cold roller and deformed difficulty.
A time is cold rolling to be referred to by early stage sizing to design specification, only carry out 1 time cold rolling, just can be rolled into trimmed size
Size, as early stage does not has sizing, capillary outer diameter specification is big, for being cold rolled to trimmed size, can carry out 2～3 times cold rolling, rolling cost
Increase.Otherwise for ensureing only to carry out 1 time being cold rolled to trimmed size, the roll piercing blank specification of buying can increase, and increases buying
Difficulty cost.
F, annealing
Titanium alloy pipe after cold rolling is sent in annealing furnace to be heated to temperature 850～930 DEG C and protects at such a temperature
Temperature 20～30min；Straight immediately followed by band temperature correction；
Owing to titanium alloy elastic modulus is low, cold leveling is difficult to aligning, and the remaining temperate zone temperature correction hence with annealing is straight.
The present invention uses continuous stepped heating furnace to anneal, and can carry out continuous annealing process, the oxygen producing annealing
Changing skin and gas-permeable layer uses pickling to remove, annealing rhythm is fast, can guarantee that again surface quality.After existing titanium alloy is cold rolling, use true
Empty furnace annealing processes, and no longer carries out pickling or grind off and descale to become with deep gas after vacuum drying oven annealing, but vacuum annealing
Tapping temperature to be controlled (be heated to temperature and be incubated after, furnace cooling just can come out of the stove to less than 600 DEG C, it is to avoid reoxidation with
Permeation, it is impossible to be carried out continuously annealing, processes the time long, and cost is high.
By the annealing to cold rolling rear titanium alloy, by annealing different temperatures requirement, it is ensured that the surrender of titanium alloy tube,
Anti-tensile, extension and ballistic work meet requirement.
G, white picking
By annealing aligning after titanium alloy pipe be placed in by 5～9 weight portion Fluohydric acid .s, 16～22 weight portion nitric acid and 69～
The temperature 50 of 79 weight parts water compositions～the pickle of 70 DEG C carry out white picking, i.e. obtains described titanium alloy tube.
Titanium alloy pipe surface after annealed process can produce oxide skin and gas-permeable layer again, therefore after annealing aligning
Titanium alloy tube need to again carry out pickling, pickle is by 5～9 weight portion Fluohydric acid .s, 16～22 weight portion nitric acid and 69～79
Weight parts water composition, pickling temperature is 50～70 DEG C, and the acid time is 5～9min, and pickling time can be according to titanium in descaling bath
Quantity and the pickle concentration of compo pipe control.
According to the preferred embodiment of the present invention, described titanium alloy is made up of following component, by weight:
Al 5.6～6.7%；
V 3.6～4.4%；
Fe≤0.28%；
C≤0.07%；
O≤0.18%；
N≤0.01%；
H≤0.01%；
Surplus Ti.
According to the preferred embodiment of the present invention, described round base a diameter of
According to the preferred embodiment of the present invention, the deflection of described sizing is 2～25%.
According to the preferred embodiment of the present invention, described cold-rolling mill uses oil lubricating.
Present invention also offers the titanium alloy tube that the production method described in employing prepares, described titanium alloy tube has following
Characteristic:
Titanium alloy tube to external diameter 60.32～88.90mm specification, outer diameter tolerance 0.0mm～+0.79mm, wall thickness tolerance >=-
10%, meet titanium alloy oil pipe design size tolerance；Yield strength 758～965MPa, tensile strength >=862MPa, extend
Rate >=11.0%, meets the performance of 110ksi grade of steel.
[beneficial effect]
(1) present invention saves tube rolling operation after roll piercing and increases the operation of sizing, by the hollow billet after perforation
Sizing becomes the pipe of different cold rolling size, it is possible to achieve a time that the round base of a kind of specification can produce various outer diameter size is cold rolling
Titanium alloy tube.
(2) decreasing milling train tube rolling, internal surface of bloom is good；Pierced shell is at titanium alloy two-phase section sizing, and its deflection can
With with cold rolling reduction superposition, cold rolling after through annealing be conducive to improving titanium alloy tube performance.
(3) the titanium alloy tube outer surface quality obtained is good, and external diameter, wall thickness dimension precision are high, and lumber recovery is more than 92%.Titanium
Compo pipe has a following characteristic:
Titanium alloy tube to external diameter 60.32～88.90mm specification, outer diameter tolerance 0.0mm～+0.79mm, wall thickness tolerance >=-
10%, meet titanium alloy oil pipe design size tolerance；Yield strength 758～965MPa, tensile strength >=862MPa, extend
Rate >=11.0%, meets the performance of 110ksi grade of steel.
[detailed description of the invention]
The present invention is will be better understood that by following embodiment.
Embodiment 1: production specificationTitanium alloy tube
Technological process: Packaging after qualified.
Concrete production method is as follows: first, is made by titanium alloyCircle base is placed in remaining oxygen in stove
Volumetric concentration 2～5% micro-oxidizing atmosphere Sloping Hearth Heating Furnace in be heated at temperature 970～990 DEG C and at such a temperature
Insulation 25min, the titanium alloy circle base after being heated.Wherein titanium alloy is madeYuan Pishi manufacturer is through true
Empty consumable electroarc furnace melting, forging and machining obtains, quality meets roll piercing requirement, and its chemical composition is according to weight percent
Being calculated as: Al:6.39%, V:4.07%, Fe:0.11% and surplus Ti, this chemical composition meets the rule of GB/T3620.2-2007
Fixed.
Titanium alloy circle base after heating is delivered to perforating machine through roller-way after coming out of the stove to carry out roll piercing and obtains hull-skin temperature
970～1025 DEG C of specificationsHollow billet；Wherein perforating machine be hole top specification Φ 94mm × 210mm,
76 Plug pipe mill plants of push rod specification Φ 89, perforating machine pass parameters is as follows: roll spacing 98 ± 1mm, lead 108 ± 1mm, and top is stretched
Amount 93 ± 2mm, perforating roller rotating speed 70～75 revs/min.
Then, the hollow billet after roll piercing carries out sizing and obtains specificationTitanium alloy hollow forging,
Wherein the hollow billet after roll piercing is delivered to the time of sizing mill is 44～46s, and hollow billet temperature 910 DEG C～930 DEG C before sizing are fixed
Behind footpath, temperature is 870～890 DEG C, and the deflection of sizing is 2.4%；After sizing, band temperature correction is straight, and straightening temperature is 580 DEG C～600
DEG C, then air cooling is to room temperature；
Again hollow forging straight for band temperature correction after sizing is placed in by 8 weight portion Fluohydric acid .s, 19 weight portion nitric acid and 73 weight parts waters
The pickle of the temperature 60 C of composition carries out a pickling, obtains titanium alloy pipe；
Titanium alloy pipe after pickling is carried out through cold-rolling mill that a time of deflection 33.3% is cold rolling obtains specificationCold rolling after titanium alloy pipe；
Titanium alloy pipe after cold rolling is sent in annealing furnace to be heated to temperature 890～910 DEG C and protects at such a temperature
Temperature 20min；Straight immediately followed by band temperature correction；
Finally the titanium alloy pipe after annealing aligning is placed in by 8 weight portion Fluohydric acid .s, 19 weight portion nitric acid and 73 weight
The temperature 50 of part water composition～the pickle of 70 DEG C carry out white picking, i.e. obtains described titanium alloy tube.
The outside dimension of the titanium alloy tube that the present embodiment prepares is shown in Table 1, and wall thickness dimension is shown in Table 2, the performance number of titanium alloy tube
According to being shown in Table 3.
Table 1: the outside dimension of the titanium alloy tube of embodiment 1
As it can be seen from table 1 the outer diameter tolerance of titanium alloy tube that embodiment prepares is in the range of+0.3mm～+0.6mm,
External diameter, 89.0～89.5mm, meets titanium alloy oil pipe outside diameter control at 88.9～89.69mm area requirements.
Table 2: the wall thickness dimension of the titanium alloy of embodiment 1
As can be seen from Table 2, the wall thickness tolerance before example 1 produces the titanium alloy tube pickling obtained can be-1%～+9.3%
In the range of.The wall thickness of titanium alloy tube, in the range of 6.2～6.85mm, meets titanium alloy oil pipe wall thickness >=-10% requirement.
Embodiment 2: production specificationTitanium alloy tube
Technological process: Bag after qualified
Dress.
Concrete production method is as follows: first, is made by titanium alloyCircle base is placed in remaining oxygen in stove
Volumetric concentration 2～5% micro-oxidizing atmosphere Sloping Hearth Heating Furnace in be heated at temperature 970～990 DEG C and at such a temperature
Insulation 25min, the titanium alloy circle base after being heated.Wherein titanium alloy is madeYuan Pishi manufacturer is through true
Empty consumable electroarc furnace melting, forging and machining obtains, quality meets roll piercing requirement, and its chemical composition is according to weight percent
Being calculated as: Al:6.39%, V:4.07%, Fe:0.11% and surplus Ti, this chemical composition meets the rule of GB/T3620.2-2007
Fixed.
Titanium alloy circle base after heating is delivered to perforating machine through roller-way after coming out of the stove to carry out roll piercing and obtains hull-skin temperature
970～1025 DEG C of specificationsHollow billet；Wherein perforating machine be hole top specification Φ 94mm ×
210mm, 76 Plug pipe mill plants of push rod specification Φ 89, perforating machine pass parameters is as follows: roll spacing 97 ± 1mm, lead 107 ±
1mm, pushes up the amount of stretching 93 ± 2mm, perforating roller rotating speed 70～75 revs/min.
Then, the hollow billet after roll piercing carries out sizing and obtains specificationTitanium alloy hollow forging, its
It is 44～46s that hollow billet after middle roll piercing is delivered to the time of sizing mill, hollow billet temperature 910 DEG C～930 DEG C, sizing before sizing
Rear temperature is 830～870 DEG C, and the deflection of sizing is 21%；After sizing, band temperature correction is straight, and straightening temperature is 520 DEG C～570 DEG C,
Then air cooling is to room temperature；
Again hollow forging straight for band temperature correction after sizing is placed in by 8 weight portion Fluohydric acid .s, 19 weight portion nitric acid and 73 weight parts waters
The pickle of the temperature 60 C of composition carries out a pickling, obtains titanium alloy pipe；
Titanium alloy pipe after pickling is carried out through cold-rolling mill that a time of deflection 33.9% is cold rolling obtains specificationCold rolling after titanium alloy pipe；
Titanium alloy pipe after cold rolling is sent in annealing furnace to be heated to temperature 890～910 DEG C and protects at such a temperature
Temperature 20min；Straight immediately followed by band temperature correction；
Finally the titanium alloy pipe after annealing aligning is placed in by 8 weight portion Fluohydric acid .s, 19 weight portion nitric acid and 73 weight
The temperature 50 of part water composition～the pickle of 70 DEG C carry out white picking, i.e. obtains described titanium alloy tube.
The outer diameter tolerance of titanium alloy tube that the present embodiment prepares in the range of 0～+0.79mm, wall thickness tolerance-6%～
In the range of+10%.
The performance data of the titanium alloy tube prepared in the present embodiment is shown in Table 3.
Embodiment 3: production specificationTitanium alloy tube
Technological process: Bag after qualified
Dress.
Concrete production method is as follows: first, is made by titanium alloyCircle base is placed in remaining oxygen in stove
Volumetric concentration 2～5% micro-oxidizing atmosphere Sloping Hearth Heating Furnace in be heated at temperature 970～990 DEG C and at such a temperature
Insulation 20min, the titanium alloy circle base after being heated.Wherein titanium alloy is madeYuan Pishi manufacturer is through true
Empty consumable electroarc furnace melting, forging and machining obtains, quality meets roll piercing requirement, and its chemical composition is according to weight percent
Being calculated as: Al:6.39%, V:4.07%, Fe:0.11% and surplus Ti, this chemical composition meets the rule of GB/T3620.2-2007
Fixed.
Titanium alloy circle base after heating is delivered to perforating machine through roller-way after coming out of the stove to carry out roll piercing and obtains hull-skin temperature
970～1025 DEG C of specificationsHollow billet；Wherein perforating machine be hole top specification Φ 94mm ×
210mm, 76 Plug pipe mill plants of push rod specification Φ 89, perforating machine pass parameters is as follows: roll spacing 97 ± 1mm, lead 107 ±
1mm, pushes up the amount of stretching 93 ± 2mm, perforating roller rotating speed 70～75 revs/min.
Then, the hollow billet after roll piercing carries out sizing and obtains specificationTitanium alloy hollow forging, its
It is 44～46s that hollow billet after middle roll piercing is delivered to the time of sizing mill, hollow billet temperature 910 DEG C～930 DEG C, sizing before sizing
Rear temperature is 830～870 DEG C, and the deflection of sizing is 21%；After sizing, band temperature correction is straight, and straightening temperature is 520 DEG C～570 DEG C,
Then air cooling is to room temperature；
Again hollow forging straight for band temperature correction after sizing is placed in by 8 weight portion Fluohydric acid .s, 19 weight portion nitric acid and 73 weight parts waters
The pickle of the temperature 60 C of composition carries out a pickling, obtains titanium alloy pipe；
Titanium alloy pipe after pickling is carried out through cold-rolling mill that a time of deflection 43.8% is cold rolling obtains specificationCold rolling after titanium alloy pipe；
Titanium alloy pipe after cold rolling is sent in annealing furnace to be heated to temperature 890～910 DEG C and protects at such a temperature
Temperature 20min；Straight immediately followed by band temperature correction；
Finally the titanium alloy pipe after annealing aligning is placed in by 8 weight portion Fluohydric acid .s, 19 weight portion nitric acid and 73 weight
The temperature 50 of part water composition～the pickle of 70 DEG C carry out white picking, i.e. obtains described titanium alloy tube.
The outer diameter tolerance of titanium alloy tube that the present embodiment prepares in the range of 0～+0.79mm, wall thickness tolerance-6%～
In the range of+10%.
The performance data of the titanium alloy tube prepared in the present embodiment is shown in Table 3.
Embodiment 4: production specificationTitanium alloy tube
Technological process: Packaging after qualified.
Concrete production method is as follows: first, is made by titanium alloyCircle base is placed in the body of remaining oxygen in stove
Volume concentrations 2～5% micro-oxidizing atmosphere Sloping Hearth Heating Furnace in be heated at temperature 970～990 DEG C and protect at such a temperature
Temperature 30min, the titanium alloy circle base after being heated.Wherein titanium alloy is madeYuan Pishi manufacturer is through vacuum
Consumable electroarc furnace melting, forging and machining obtains, quality meets roll piercing requirement, and its chemical composition is according to weight percentage
For: Al:6.39%, V:4.07%, Fe:0.11% and surplus Ti, this chemical composition meets the rule of GB/T3620.2-2007
Fixed.
Titanium alloy circle base after heating is delivered to perforating machine through roller-way after coming out of the stove to carry out roll piercing and obtains hull-skin temperature
970～1025 DEG C of specificationsHollow billet；Wherein perforating machine is that hole comes directly towards specification Φ 76mm × 190mm, top
76 Plug pipe mill plants of bar gauge lattice Φ 73, perforating machine pass parameters is as follows: roll spacing 81 ± 1mm, lead 89 ± 1mm, pushes up the amount of stretching
74 ± 2mm, perforating roller rotating speed 73～75 revs/min.
Then, the hollow billet after roll piercing carries out sizing and obtains specificationTitanium alloy hollow forging, its
It is 38～40s that hollow billet after middle roll piercing is delivered to the time of sizing mill, hollow billet temperature 905 DEG C～930 DEG C, sizing before sizing
Rear temperature is 850～880 DEG C, and the deflection of sizing is 7.7%；After sizing, band temperature correction is straight, and straightening temperature is 520 DEG C～570 DEG C,
Then air cooling is to room temperature；
Again hollow forging straight for band temperature correction after sizing is placed in by 8 weight portion Fluohydric acid .s, 19 weight portion nitric acid and 73 weight parts waters
The pickle of the temperature 60 C of composition carries out a pickling, obtains titanium alloy pipe；
Titanium alloy pipe after pickling is carried out through cold-rolling mill that a time of deflection 39.9% is cold rolling obtains specificationCold rolling after titanium alloy pipe；
Titanium alloy pipe after cold rolling is sent in annealing furnace to be heated to temperature 860～880 DEG C and protects at such a temperature
Temperature 20min；Straight immediately followed by band temperature correction；
Finally the titanium alloy pipe after annealing aligning is placed in by 8 weight portion Fluohydric acid .s, 19 weight portion nitric acid and 73 weight
The temperature 50 of part water composition～the pickle of 70 DEG C carry out white picking, i.e. obtains described titanium alloy tube.
The outer diameter tolerance of titanium alloy tube that the present embodiment prepares in the range of 0～+0.79mm, wall thickness tolerance-6%～
In the range of+10%.
The performance data of the titanium alloy tube prepared in the present embodiment is shown in Table 3.
Table 3: the performance of the titanium alloy tube of embodiment 1-4
Claims (9)
1. the production method of a titanium alloy tube, it is characterised in that the step of this production method is as follows:
A, heating
The round base made by titanium alloy is placed in the volumetric concentration 2 of remaining oxygen in stove～the Sloping Hearth heating of the micro-oxidizing atmosphere of 5%
Being heated in stove at temperature 950～1030 DEG C and insulation 20～30min at such a temperature, base justified by the titanium alloy after heat；
B, roll piercing
Titanium alloy circle base after the heating of step A is delivered to perforating machine through roller-way after coming out of the stove to carry out roll piercing and obtains hull-skin temperature
The hollow billet of 970～1030 DEG C；
C, sizing
Hollow billet after roll piercing carries out sizing and obtains titanium alloy hollow forging, and the hollow billet after wherein controlling roll piercing is delivered to sizing
The time of machine is 35～50s, and controls before sizing hollow billet temperature 850～930 DEG C；After sizing, band temperature correction is straight, and then air cooling is to room
Temperature；
D, a pickling
Hollow forging straight for band temperature correction after sizing is placed in by 5～9 weight portion Fluohydric acid .s, 16～22 weight portion nitric acid and 69～79 weight
Carrying out a pickling in the temperature 50 of part water composition～the pickle of 70 DEG C, one time pickling time is 5～9min, obtains titanium alloy
Pipe；
E, cold rolling
By the titanium alloy pipe after a pickling through cold-rolling mill carry out deflection 30～50% a time cold rolling；
F, annealing
Titanium alloy pipe after cold rolling is sent in annealing furnace to be heated to temperature 850～930 DEG C and is incubated 20 at such a temperature
～30min；Straight immediately followed by band temperature correction；
G, white picking
Titanium alloy pipe after annealing aligning is placed in by 5～9 weight portion Fluohydric acid .s, 16～22 weight portion nitric acid and 69～79 weights
Carrying out white picking in the temperature 50 of amount part water composition～the pickle of 70 DEG C, the white picking time is 5～9min, i.e. obtains institute
The titanium alloy tube stated.
Production method the most according to claim 1, it is characterised in that described titanium alloy is made up of following component, with weight
Percentage meter:
Al 5.6～6.7%；
V 3.6～4.4%；
Fe≤0.28%；
C≤0.07%；
O≤0.18%；
N≤0.01%；
H≤0.01%；
Surplus Ti.
Production method the most according to claim 1, it is characterised in that a diameter of φ 95～φ 120mm of described round base.
Production method the most according to claim 1, it is characterised in that described pickle be by 8 weight portion Fluohydric acid .s, 19
Mass parts nitric acid and 73 weight parts waters form.
Production method the most according to claim 1, it is characterised in that the round base made by titanium alloy is placed in remaining oxygen in stove
Volumetric concentration 2～5% micro-oxidizing atmosphere Sloping Hearth Heating Furnace in be heated to temperature 970～1000 DEG C.
Production method the most according to claim 1, it is characterised in that the deflection of described sizing is 2～25%.
Production method the most according to claim 1, it is characterised in that the temperature that after described sizing, band temperature correction is straight be 520～
600℃。
Production method the most according to claim 1, it is characterised in that described cold-rolling mill uses oil lubricating.
9. the titanium alloy tube prepared according to the production method described in claim any one of claim 1-8, it is characterised in that
Described titanium alloy tube has a following characteristic:
Titanium alloy tube to external diameter 60.32～88.90mm specification, outer diameter tolerance 0.0mm～+0.79mm, wall thickness tolerance >=-
10%, meet titanium alloy oil pipe design size tolerance；Yield strength 758～965MPa, tensile strength >=862MPa, extend
Rate >=11.0%, meets the performance of 110ksi grade of steel.
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| CN104762525A (en) * | 2015-03-27 | 2015-07-08 | 常熟市双羽铜业有限公司 | Titanium alloy tube for heat exchanger |
| CN104772603B (en) * | 2015-03-27 | 2017-04-12 | 中国船舶重工集团公司第七二五研究所 | Forming process method for eccentric aluminum alloy reducing tube |
| CN109234555B (en) * | 2018-10-24 | 2020-08-18 | 成都先进金属材料产业技术研究院有限公司 | Preparation method of small-caliber TA18 titanium alloy seamless tube |
| CN110899335A (en) * | 2019-12-09 | 2020-03-24 | 西北工业大学 | Short-process manufacturing method of small-caliber marine titanium alloy seamless pipe |
| CN111468660B (en) * | 2020-04-17 | 2021-07-06 | 浙江申吉钛业股份有限公司 | Super-long forging with small holes and process based on telescopic die |
| CN113770195A (en) * | 2021-08-31 | 2021-12-10 | 浙江圣洁钛业科技有限公司 | Processing technology of high-strength titanium pipe |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3795970A (en) * | 1973-01-23 | 1974-03-12 | A Keathley | Processes for extruding a product |
| CN101176882A (en) * | 2007-12-13 | 2008-05-14 | 北京有色金属研究总院 | Process technique of high-strength titanium alloy pipes |
| CN101824564A (en) * | 2009-06-03 | 2010-09-08 | 东港市东方高新金属材料有限公司 | Titanium alloy TC4 cold-rolled tube and production method thereof |
| CN102303065A (en) * | 2011-06-21 | 2012-01-04 | 攀钢集团成都钢钒有限公司 | Method for manufacturing seamless steel tube for vehicle-mounted large-diameter high pressure gas cylinder |
| CN103909111A (en) * | 2014-03-27 | 2014-07-09 | 攀钢集团成都钢钒有限公司 | Titanium alloy seamless tube and production method thereof |
| CN103934269A (en) * | 2014-03-31 | 2014-07-23 | 攀钢集团成都钢钒有限公司 | TC4 titanium alloy seamless tube and production method thereof |
-
2014
- 2014-08-26 CN CN201410424401.XA patent/CN104308461B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3795970A (en) * | 1973-01-23 | 1974-03-12 | A Keathley | Processes for extruding a product |
| CN101176882A (en) * | 2007-12-13 | 2008-05-14 | 北京有色金属研究总院 | Process technique of high-strength titanium alloy pipes |
| CN101824564A (en) * | 2009-06-03 | 2010-09-08 | 东港市东方高新金属材料有限公司 | Titanium alloy TC4 cold-rolled tube and production method thereof |
| CN102303065A (en) * | 2011-06-21 | 2012-01-04 | 攀钢集团成都钢钒有限公司 | Method for manufacturing seamless steel tube for vehicle-mounted large-diameter high pressure gas cylinder |
| CN103909111A (en) * | 2014-03-27 | 2014-07-09 | 攀钢集团成都钢钒有限公司 | Titanium alloy seamless tube and production method thereof |
| CN103934269A (en) * | 2014-03-31 | 2014-07-23 | 攀钢集团成都钢钒有限公司 | TC4 titanium alloy seamless tube and production method thereof |
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