CN108580577A - A kind of preparation method of the high-strength beta-titanium alloy silk material of spring - Google Patents
A kind of preparation method of the high-strength beta-titanium alloy silk material of spring Download PDFInfo
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- CN108580577A CN108580577A CN201711462593.3A CN201711462593A CN108580577A CN 108580577 A CN108580577 A CN 108580577A CN 201711462593 A CN201711462593 A CN 201711462593A CN 108580577 A CN108580577 A CN 108580577A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
- B21C37/047—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire of fine wires
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
- B21C3/02—Dies; Selection of material therefor; Cleaning thereof
- B21C3/12—Die holders; Rotating dies
- B21C3/14—Die holders combined with devices for guiding the drawing material or combined with devices for cooling heating, or lubricating
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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
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Abstract
Beta titanium alloy ingot casting flat-die forging is the bar of 120~Ф of Ф 150mm by a kind of preparation method of spring beta titanium alloy silk material, and then Centreless lathe vehicle descales and remove forge crack；Then it is forged to the bar of 40~Ф of Ф 60mm, rerolls and the bar of 8~Ф of Ф 9mm is made, is removed the oxide skin vehicle on surface using Centreless lathe, thinning surface crackle；Then laser heating forms oxide layer under 700 DEG C~720 DEG C, 13~15m/min speed in tube furnace, and is gently drawn once using drawing die when bar is come out of the stove, while adhering to aquadag on silk material surface；Again through hot pull, it is prepared into the silk material blank of 1.2~Ф of Ф 3.2mm；Polishing is prepared into the silk material of 1.0~Ф of Ф 3mm after solution treatment.Beta titanium alloy silk material prepared by the present invention has the characteristics that high intensity (>=1300MPa), and it is low to solve steel spring specific strength, it is not corrosion-resistant the problems such as, meet the requirement of aerospace titanium alloy spring.
Description
Technical field
The invention belongs to titanium alloy material manufacture fields, are related to a kind of preparation method of the high-strength beta-titanium alloy silk material of spring.
Background technology
Spring product is widely used in the fields such as Aeronautics and Astronautics, automobile, although aviation spring in aircaft configuration, device, be
It is in system to belong to small part more, once but fracture failure, often cause the forfeiture of certain device or a certain system function, causes serious
Consequence.Therefore, aviation spring is with securely and reliably for first requirement.The initially use carbon steel making of aviation spring, but due to
Under alternate stress, spring is also easy to produce corrosion fatigue and is broken.Subsequent stainless steel spring has gradually developed, 18-8 type austenites
Stainless steel and semiaustenitic precipitation-hardening stainless steel are most common spring stainless steels.As aircraft of new generation is to mitigate structure
Quality reduces structural volume as design object, and steel spring has not adapted to material loss of weight, high airplane thrust weight ratio and mobility
The demand of energy.And titanium alloy has the characteristics that elasticity modulus is low, specific strength is high, corrosion-resistant, endurance, thus in quality and occupy
Under space is severely limited and corrosive environment, titanium alloy is a kind of ideal spring material.Compared with steel spring, titanium spring tool
Have the advantages that light weight, small and resonant frequency are high, density and elasticity modulus only have the half of steel spring, and intensity is almost
As steel spring.
The silk material of beta titanium alloy is mainly used in aerospace fastener, bolt, screw etc..Beta titanium alloy silk material is solid
Also there is excellent cold plasticity under molten state, can be around spring be made as, mechanical properties are up to 900MPa or more under solid solution condition.
After timeliness, spring strength can reach 1300MPa or more.550 DEG C of temperature is used for a long time in highest, and intensity is reachable at 550 DEG C
600MPa or more.It can be used for the lock spring up and down of undercarriage, door counter spring also has corrosion-resistant when being used for ship domain
Characteristic, be a kind of ideal spring defective material, the current country there are no the report for preparing spring beta titanium alloy silk material technique.
Invention content
To meet the application demand of high-strength titanium alloy spring, it is an object of the present invention to provide a kind of spring beta titanium alloy silks
The production method of material, silk material finished diameter prepared by this method are Ф 1mm~Ф 3mm, and finished product state is solid solution, coils, throws
Light state can freely scatter after uncoiling, be produced convenient for the coiling of spring.
To achieve the goals above, the technical solution adopted by the present invention is as follows：
A kind of spring preparation method of beta titanium alloy silk material, includes the following steps：
Step 1：Use beta titanium alloy ingot casting for raw material, flat-die forging is the bar of 120~Ф of Ф 150mm, is not then in the mood for
Lathe car descales and removes forge crack；
Step 2：Bar finish forge prepared by step 1 at 40~Ф of Ф 60mm bar, using Centreless lathe by surface
Oxide skin vehicle removes, thinning surface crackle；
Step 3：Rolling bar prepared by step 2 at 8~Ф of Ф 9mm bar, using Centreless lathe by the oxygen on surface
Change skin vehicle to remove, thinning surface crackle；
Step 4：By surface treated bar in step 3 at 700 DEG C~720 DEG C in tube furnace, 13~15m/min
Laser heating forms oxide layer under speed, and is gently drawn once using drawing die when bar is come out of the stove, while adhering on silk material surface
Aquadag；
Step 5：By the blank in step 4 through hot pull, it is prepared into the silk material blank of 1.2~Ф of Ф 3.2mm；
Step 6：The silk material of drawing in step 5 is subjected to solution treatment, solution treatment while persistently applies at silk material both ends
Pulling force is added to be aligned；
Step 7：The silk material aligned in step 6 is subjected to the silk material that surface polishing is prepared into 1.0~Ф of Ф 3mm.
The present invention, which further improves, to be, in step 1, the temperature of flat-die forging is 1100 DEG C~1170 DEG C.
The present invention, which further improves, to be, in step 2 and 3, is all made of abrasive machine thinning surface crackle.
The present invention, which further improves, to be, in step 4, the diameter of drawing die is smaller 0.1mm than diameter of rod.
The present invention, which further improves, to be, in step 4, drawing die is installed in graphite, and graphite is housed in graphite
Breast, when silk material passes through wire drawing die, for diameter by pulling-down 0.1mm, aquadag is attached to silk material surface.
The present invention, which further improves, to be, in step 5, hot-pull technique is：First in 700 DEG C~750 DEG C temperature ranges
Interior heating is drawn to Ф 4.5mm, after passage is deformed into 0.5mm and then carries out surface inspection reconditioning and repeat step 4 from Ф 8mm
It is heated in 680 DEG C~720 DEG C temperature ranges, is drawn to Ф 1.15~Ф 3.15mm from Ф 4.5mm, passage is deformed into 0.1mm
~0.3mm.
The present invention, which further improves, to be, in step 6, solution treatment carries out in tube furnace, the temperature of solution treatment
It it is 780 DEG C~840 DEG C, speed is 4~6m/min.
Compared with prior art, the device have the advantages that：Each process of transfer order in the present invention, which is all made of, not to be in the mood for
Lathe car removes surface defect, and the method for not using pickling reduces and inhales hydrogen process, reduces the cost of vacuum annealing repeatedly；At
Using on-line solution and the process program aligned simultaneously, the silk material also avoided cannot free uncoiling after simple annealing for product solid solution
Situation, the use for facilitating spring to process；Finished product carries out surface polishing by the way of mechanical processing, the silk for the pickled surface that compares
Material, finished surface wants bright, and dimensional uniformity is good (0~0.02mm), and beta titanium alloy silk material prepared by the present invention has high-strength
The characteristics of spending (>=1300MPa), it is low to solve steel spring specific strength, it is not corrosion-resistant the problems such as, meet aerospace and closed with titanium
The requirement of golden spring.
Specific implementation mode
In conjunction with example, present invention is further described in detail.
A kind of preparation method of spring beta titanium alloy silk material, using flat-die forging, finish forge, rolling, hot pull technique
Method prepares the spring beta titanium alloy silk material of Ф 1mm~Ф 3mm.Specifically include following steps：
Step 1：Use beta titanium alloy ingot casting for raw material, flat-die forging is 120~Ф of Ф at 1100 DEG C~1170 DEG C
The bar of 150mm, then Centreless lathe vehicle descale and remove forge crack；
Step 2：Bar finish forge prepared by step 1 at 40~Ф of Ф 60mm bar, using Centreless lathe by surface
Oxide skin vehicle removes, using abrasive machine thinning surface crackle；
Step 3：Rolling bar prepared by step 2 at 8~Ф of Ф 9mm bar, using Centreless lathe by the oxygen on surface
Change skin vehicle to remove, using abrasive machine thinning surface crackle；
Step 4：By surface treated bar in step 3 at 700 DEG C~720 DEG C in tube furnace, 13~15m/min
Laser heating forms oxide layer under speed, and the light drawing of drawing die being equipped with less than diameter of rod 0.1mm when bar is come out of the stove is primary,
Drawing die is installed in graphite, aquadag is housed, its object is to be coated with graphite lubrication layer in graphite.When silk material passes through drawing
Diameter just can rely on mold when reducing to be uniformly adhered to silk material to the pressure of silk material by pulling-down 0.1mm, aquadag when silk mould
Surface, the attachment of graphite lubrication layer is uneven will to seriously affect silk material surface quality, and silk material is also easy to break when drawing；
Step 5：By the blank in step 4 through hot pull, it is prepared into the silk material blank of 1.2~Ф of Ф 3.2mm.Hot pull work
Skill is：It is first heated in 700 DEG C~750 DEG C temperature ranges, is drawn to Ф 4.5mm from Ф 8mm, passage is deformed into 0.5mm, then
Laser heating forms oxidation under 700 DEG C~720 DEG C, 13~15m/min speed in tube furnace after progress surface inspection reconditioning
Layer, and the light drawing of drawing die being equipped with less than diameter of rod 0.1mm when bar is come out of the stove is primary, drawing die is installed in graphite,
Its object is to be coated with graphite lubrication layer.When silk material passes through wire drawing die, diameter just can rely on reducing by pulling-down 0.1mm, aquadag
When mold silk material surface is uniformly adhered to the pressure of silk material, the attachment of graphite lubrication layer is uneven will to seriously affect silk material table
Face quality, silk material is also easy to break when drawing；Then it is heated in 680 DEG C~720 DEG C temperature ranges again, from Ф 4.5mm drawings
To Ф 1.15mm, passage is deformed into 0.1mm~0.3mm, and drawing speed is 2~5m/min.；
Step 6：The silk material of drawing in step 5 is subjected to solution treatment, silk material both ends are continuously applied while solution treatment
Pulling force is aligned, and the free uncoiling of welding wire energy by the process, straightness is good after uncoiling, is polished convenient for finished surface.Solid solution
Processing carries out in tube furnace, and the temperature of solution treatment is 780 DEG C~840 DEG C, and speed is 4~6m/min；
Step 7：The silk material aligned in step 6 is subjected to the silk material that surface polishing is prepared into 1.0~Ф of Ф 3mm.
Silk material can carry out ageing treatment after being fabricated to spring product, improve use intensity, and aging temp is 480 DEG C~
Between 540 DEG C, the time is 6~8h.
Embodiment 1
For preparing Φ 3.0mm beta titanium alloy welding wires, preparation process is as follows：
Step 1：Use a kind of beta titanium alloy ingot casting for raw material, by being forged in 1170 DEG C of coggings, 800 DEG C of forgings of finished product
Base is the bar of Ф 130mm, and then Centreless lathe vehicle descales, and removes forge crack.
Step 2：Bar finish forge step 1 prepared using the method for finish forge at Ф 50mm bar, using Centreless lathe
The oxide skin vehicle on surface is removed, using abrasive machine thinning surface crackle.
Step 3：Rolling bar step 2 prepared using the method for rolling at Ф 8.5mm bar, using Centreless lathe
The oxide skin vehicle on surface is removed, using abrasive machine thinning surface crackle.
Step 4：Surface treated bar in step 3 is continuous under 700 DEG C, 13m/min speed in tube furnace
It is thermally formed oxide layer, and the light drawing of drawing die being equipped with less than diameter of rod 0.1mm when bar is come out of the stove is primary, drawing die installation
In in aquadag box, aquadag is housed, its object is to be coated with graphite lubrication layer in aquadag box.When silk material passes through wire drawing die
Diameter just can rely on mold when reducing to be uniformly adhered to silk material surface, stone to the pressure of silk material by pulling-down 0.1mm, aquadag
The attachment of black lubricant layer is uneven will to seriously affect silk material surface quality, and silk material is also easy to break when drawing；
Step 5：By the blank in step 4 through hot pull, it is prepared into the silk material blank of Ф 3.15.Drawing process is：Single order
Section heats in 750 DEG C of temperature ranges, is drawn to → Ф 4.5 from Ф 8, passage deforms 0.5mm or so, drawing speed 1m/
min；It needs to carry out surface inspection reconditioning after the completion of one stage, it is then continuous under 700 DEG C, 13m/min speed in tube furnace
It is thermally formed oxide layer, and the light drawing of drawing die being equipped with less than diameter of rod 0.1mm when bar is come out of the stove is primary, drawing die installation
In in graphite, its object is to be coated with graphite lubrication layer.When silk material passes through wire drawing die, diameter is by pulling-down 0.1mm, aquadag
Just mold when reducing can be relied on to be uniformly adhered to silk material surface to the pressure of silk material, the attachment of graphite lubrication layer is uneven will be tight
Ghost image rings silk material surface quality, and silk material is also easy to break when drawing；It is finally heated at 680 DEG C, Ф is drawn to from Ф 4.5mm
3.15mm, passage are deformed into 0.1mm or so, drawing speed 2m/min.
Step 6：The silk material completed in step 5 is carried out to on-line solution, aligning again in tube furnace, is thrown convenient for finished surface
Light.Solid solubility temperature is 780 DEG C, speed 4m/min.
Step 7：The silk material aligned in step 6 is subjected to the solid solution state silk material that surface polishing is prepared into Ф 3.
It is respectively 1 and 2 arbitrarily to take two samples, number to silk material prepared by step 7, carries out mechanics properties testing, is shown in Table 1.
Room temperature tensile properties after 1 titanium alloy solution treatment of table
Table 2 is the results of property after timeliness, can be used as shaped article performance reference final after timeliness, timeliness temperature
Between degree is 480 DEG C~540 DEG C, the time is 6~8h.
The room temperature tensile properties of titanium alloy wire materials after 2 ageing treatment of table
Embodiment 2
For preparing Φ 2.0mm beta titanium alloy welding wires, preparation process is as follows：
Step 1：Use a kind of beta titanium alloy ingot casting for raw material, by the way that in 1150 DEG C of flat-die forgings, 810 DEG C of bases are Ф
The bar of 130mm, then Centreless lathe vehicle descale, remove forge crack.
Step 2：Bar finish forge step 1 prepared using the method for finish forge at Ф 50mm bar, using Centreless lathe
The oxide skin vehicle on surface is removed, using abrasive machine thinning surface crackle.
Step 3：Rolling bar step 2 prepared using the method for rolling at Ф 8.5mm bar, using Centreless lathe
The oxide skin vehicle on surface is removed, using abrasive machine thinning surface crackle.
Step 4：Surface treated bar in step 3 is continuous under 710 DEG C, 14m/min speed in tube furnace
It is thermally formed oxide layer, and the light drawing of drawing die being equipped with less than diameter of rod 0.1mm when bar is come out of the stove is primary, drawing die installation
In in aquadag box, aquadag is housed, its object is to be coated with graphite lubrication layer in aquadag box.When silk material passes through wire drawing die
Diameter just can rely on mold when reducing to be uniformly adhered to silk material surface, stone to the pressure of silk material by pulling-down 0.1mm, aquadag
The attachment of black lubricant layer is uneven will to seriously affect silk material surface quality, and silk material is also easy to break when drawing；
Step 5：By the blank in step 4 through hot pull, it is prepared into the silk material blank of Ф 3.15.Drawing process is：Single order
Section heats in 730 DEG C of temperature ranges, is drawn to → Ф 4.5 from Ф 8, passage deforms 0.5mm or so, drawing speed 1.5m/
min；It needs to carry out surface inspection reconditioning after the completion of one stage, it is then continuous under 710 DEG C, 14m/min speed in tube furnace
It is thermally formed oxide layer, and the light drawing of drawing die being equipped with less than diameter of rod 0.1mm when bar is come out of the stove is primary, drawing die installation
In in graphite, its object is to be coated with graphite lubrication layer.When silk material passes through wire drawing die, diameter is by pulling-down 0.1mm, aquadag
Just mold when reducing can be relied on to be uniformly adhered to silk material surface to the pressure of silk material, the attachment of graphite lubrication layer is uneven will be tight
Ghost image rings silk material surface quality, and silk material is also easy to break when drawing；It is finally heated at 700 DEG C, Ф is drawn to from Ф 4.5mm
2.15mm, passage are deformed into 0.2mm or so, drawing speed 3m/min.
Step 6：The silk material completed in step 5 is carried out to on-line solution, aligning again in tube furnace, is thrown convenient for finished surface
Light.Solid solubility temperature is 800 DEG C, speed 5m/min.
Step 7：The silk material aligned in step 6 is subjected to the solid solution state silk material that surface polishing is prepared into Ф 2.
It is respectively 1 and 2 arbitrarily to take two samples, number to silk material prepared by step 7, carries out mechanics properties testing, is shown in Table 3.
Room temperature tensile properties after 3 titanium alloy solution treatment of table
Silk material can carry out ageing treatment after being fabricated to spring product, improve use intensity, and aging temp is 480 DEG C~
Between 540 DEG C, the time is 6~8h.
Table 4 is the results of property after timeliness, can be used as the final performance reference of product：
The room temperature tensile properties of titanium alloy wire materials after 4 ageing treatment of table
Embodiment 3
For preparing Φ 1.0mm beta titanium alloy welding wires, preparation process is as follows：
Step 1：Use a kind of beta titanium alloy ingot casting for raw material, by the way that in 1170 DEG C of flat-die forgings, base is Ф 130mm
Bar, then Centreless lathe vehicle descale, remove forge crack.
Step 2：Bar finish forge step 1 prepared using the method for finish forge at Ф 50mm bar, using Centreless lathe
The oxide skin vehicle on surface is removed, using abrasive machine thinning surface crackle.
Step 3：Rolling bar step 2 prepared using the method for rolling at Ф 8.5mm bar, using Centreless lathe
The oxide skin vehicle on surface is removed, using abrasive machine thinning surface crackle.
Step 4：Surface treated bar in step 3 is continuous under 700 DEG C, 15m/min speed in tube furnace
It is thermally formed oxide layer, and the light drawing of drawing die being equipped with less than diameter of rod 0.1mm when bar is come out of the stove is primary, drawing die installation
In in aquadag box, aquadag is housed, its object is to be coated with graphite lubrication layer in aquadag box.When silk material passes through wire drawing die
Diameter just can rely on mold when reducing to be uniformly adhered to silk material surface, stone to the pressure of silk material by pulling-down 0.1mm, aquadag
The attachment of black lubricant layer is uneven will to seriously affect silk material surface quality, and silk material is also easy to break when drawing；
Step 5：By the blank in step 4 through hot pull, it is prepared into the silk material blank of Ф 1.15.Drawing process is：Single order
Section heats in 750 DEG C of temperature ranges, is drawn to → Ф 4.5 from Ф 8, passage deforms 0.5mm or so, drawing speed 2m/min；
Need after the completion of one stage to carry out surface inspection reconditioning, then in tube furnace under 700 DEG C, 15m/min speed laser heating
Oxide layer is formed, and the light drawing of drawing die being equipped with less than diameter of rod 0.1mm when bar is come out of the stove is primary, drawing die is installed on stone
In print cartridge, its object is to be coated with graphite lubrication layer.When silk material passes through wire drawing die, diameter just can by pulling-down 0.1mm, aquadag
Mold when by reducing is uniformly adhered to silk material surface to the pressure of silk material, and the attachment of graphite lubrication layer is uneven by serious shadow
Ring silk material surface quality, silk material is also easy to break when drawing；It is finally heated at 720 DEG C, Ф is drawn to from Ф 4.5mm
1.15mm, passage are deformed into 0.3mm or so, drawing speed 5m/min.
Step 6：The silk material completed in step 5 is carried out to on-line solution, aligning again in tube furnace, is thrown convenient for finished surface
Light.Solid solubility temperature is 840 DEG C, speed 6m/min.
Step 7：The silk material aligned in step 6 is subjected to the solid solution state silk material that surface polishing is prepared into Ф 1.
It is respectively 1 and 2 arbitrarily to take two samples, number to silk material prepared by step 7, carries out mechanics properties testing, is shown in Table 5.
Room temperature tensile properties after 5 titanium alloy solution treatment of table
Silk material can carry out ageing treatment after being fabricated to spring product, improve use intensity, and aging temp is 480 DEG C~
Between 540 DEG C, the time is 6~8h.
Table 6 is the results of property after timeliness, can be used as the final performance reference of product：
The room temperature tensile properties of titanium alloy wire materials after 6 ageing treatment of table
Embodiment 4
For preparing Φ 1.0mm beta titanium alloy welding wires, preparation process is as follows：
Step 1：Use a kind of beta titanium alloy ingot casting for raw material, by the way that in 1140 DEG C of flat-die forgings, base is Ф 120mm
Bar, then Centreless lathe vehicle descale, remove forge crack.
Step 2：Bar finish forge step 1 prepared using the method for finish forge at Ф 40mm bar, using Centreless lathe
The oxide skin vehicle on surface is removed, using abrasive machine thinning surface crackle.
Step 3：The rolling bar for being prepared step 2 using the method for rolling, will using Centreless lathe at the bar of Ф 8mm
The oxide skin vehicle on surface removes, using abrasive machine thinning surface crackle.
Step 4：Surface treated bar in step 3 is continuous under 720 DEG C, 13m/min speed in tube furnace
It is thermally formed oxide layer, and the light drawing of drawing die being equipped with less than diameter of rod 0.1mm when bar is come out of the stove is primary, drawing die installation
In in aquadag box, aquadag is housed, its object is to be coated with graphite lubrication layer in aquadag box.When silk material passes through wire drawing die
Diameter just can rely on mold when reducing to be uniformly adhered to silk material surface, stone to the pressure of silk material by pulling-down 0.1mm, aquadag
The attachment of black lubricant layer is uneven will to seriously affect silk material surface quality, and silk material is also easy to break when drawing；
Step 5：By the blank in step 4 through hot pull, it is prepared into the silk material blank of Ф 1.2.Drawing process is：One stage
It is heated in 700 DEG C of temperature ranges, is drawn to → Ф 4.5 from Ф 8, passage deforms 0.5mm or so, drawing speed 2m/min；One
Need after the completion of stage to carry out surface inspection reconditioning, then in tube furnace under 720 DEG C, 13m/min speed laser heating shape
At oxide layer, and the light drawing of drawing die being equipped with less than diameter of rod 0.1mm when bar is come out of the stove is primary, and drawing die is installed on graphite
In box, its object is to be coated with graphite lubrication layer.When silk material passes through wire drawing die, diameter is by pulling-down 0.1mm, and aquadag just can be according to
Mold when by reducing is uniformly adhered to silk material surface to the pressure of silk material, and the attachment of graphite lubrication layer will be uneven to be seriously affected
Silk material surface quality, silk material is also easy to break when drawing；It is finally heated at 690 DEG C, Ф is drawn to from Ф 4.5mm
1.15mm, passage are deformed into 0.3mm or so, drawing speed 5m/min.
Step 6：The silk material completed in step 5 is carried out to on-line solution, aligning again in tube furnace, is thrown convenient for finished surface
Light.Solid solubility temperature is 790 DEG C, speed 6m/min.
Step 7：The silk material aligned in step 6 is subjected to the solid solution state silk material that surface polishing is prepared into Ф 1.
Embodiment 5
For preparing Φ 1.0mm beta titanium alloy welding wires, preparation process is as follows：
Step 1：Use a kind of beta titanium alloy ingot casting for raw material, by the way that in 1110 DEG C of flat-die forgings, base is Ф 140mm
Bar, then Centreless lathe vehicle descale, remove forge crack.
Step 2：Bar finish forge step 1 prepared using the method for finish forge at Ф 60mm bar, using Centreless lathe
The oxide skin vehicle on surface is removed, using abrasive machine thinning surface crackle.
Step 3：The rolling bar for being prepared step 2 using the method for rolling, will using Centreless lathe at the bar of Ф 9mm
The oxide skin vehicle on surface removes, using abrasive machine thinning surface crackle.
Step 4：Surface treated bar in step 3 is continuous under 705 DEG C, 14m/min speed in tube furnace
It is thermally formed oxide layer, and the light drawing of drawing die being equipped with less than diameter of rod 0.1mm when bar is come out of the stove is primary, drawing die installation
In in aquadag box, aquadag is housed, its object is to be coated with graphite lubrication layer in aquadag box.When silk material passes through wire drawing die
Diameter just can rely on mold when reducing to be uniformly adhered to silk material surface, stone to the pressure of silk material by pulling-down 0.1mm, aquadag
The attachment of black lubricant layer is uneven will to seriously affect silk material surface quality, and silk material is also easy to break when drawing；
Step 5：By the blank in step 4 through hot pull, it is prepared into the silk material blank of Ф 3.2.Drawing process is：One stage
It is heated in 710 DEG C of temperature ranges, is drawn to → Ф 4.5 from Ф 8, passage deforms 0.5mm or so, drawing speed 2m/min；One
Need after the completion of stage to carry out surface inspection reconditioning, then in tube furnace under 705 DEG C, 14m/min speed laser heating shape
At oxide layer, and the light drawing of drawing die being equipped with less than diameter of rod 0.1mm when bar is come out of the stove is primary, and drawing die is installed on graphite
In box, its object is to be coated with graphite lubrication layer.When silk material passes through wire drawing die, diameter is by pulling-down 0.1mm, and aquadag just can be according to
Mold when by reducing is uniformly adhered to silk material surface to the pressure of silk material, and the attachment of graphite lubrication layer will be uneven to be seriously affected
Silk material surface quality, silk material is also easy to break when drawing；It is finally heated at 710 DEG C, Ф is drawn to from Ф 4.5mm
1.15mm, passage are deformed into 0.2mm or so, drawing speed 4m/min.
Step 6：The silk material completed in step 5 is carried out to on-line solution, aligning again in tube furnace, is thrown convenient for finished surface
Light.Solid solubility temperature is 820 DEG C, speed 4m/min.
Step 7：The silk material aligned in step 6 is subjected to the solid solution state silk material that surface polishing is prepared into Ф 1.
Embodiment 6
For preparing Φ 1.0mm beta titanium alloy welding wires, preparation process is as follows：
Step 1：Use a kind of beta titanium alloy ingot casting for raw material, by the way that in 1130 DEG C of flat-die forgings, base is Ф 150mm
Bar, then Centreless lathe vehicle descale, remove forge crack.
Step 2：Bar finish forge step 1 prepared using the method for finish forge at Ф 50mm bar, using Centreless lathe
The oxide skin vehicle on surface is removed, using abrasive machine thinning surface crackle.
Step 3：The rolling bar for being prepared step 2 using the method for rolling, will using Centreless lathe at the bar of Ф 8mm
The oxide skin vehicle on surface removes, using abrasive machine thinning surface crackle.
Step 4：Surface treated bar in step 3 is continuous under 715 DEG C, 15m/min speed in tube furnace
It is thermally formed oxide layer, and the light drawing of drawing die being equipped with less than diameter of rod 0.1mm when bar is come out of the stove is primary, drawing die installation
In in aquadag box, aquadag is housed, its object is to be coated with graphite lubrication layer in aquadag box.When silk material passes through wire drawing die
Diameter just can rely on mold when reducing to be uniformly adhered to silk material surface, stone to the pressure of silk material by pulling-down 0.1mm, aquadag
The attachment of black lubricant layer is uneven will to seriously affect silk material surface quality, and silk material is also easy to break when drawing；
Step 5：By the blank in step 4 through hot pull, it is prepared into the silk material blank of Ф 2.Drawing process is：One stage existed
Heating in 720 DEG C of temperature ranges is drawn to → Ф 4.5 from Ф 8, and passage deforms 0.5mm or so, drawing speed 2m/min；Single order
It needs to carry out surface inspection reconditioning after the completion of section, then laser heating is formed under 715 DEG C, 15m/min speed in tube furnace
Oxide layer, and the light drawing of drawing die being equipped with less than diameter of rod 0.1mm when bar is come out of the stove is primary, drawing die is installed on graphite
Interior, its object is to be coated with graphite lubrication layer.When silk material passes through wire drawing die, diameter just can be relied on by pulling-down 0.1mm, aquadag
Mold when reducing is uniformly adhered to silk material surface to the pressure of silk material, and the attachment of graphite lubrication layer is uneven will to seriously affect silk
Material surface quality, silk material is also easy to break when drawing；It is finally heated at 720 DEG C, Ф 1.15mm is drawn to from Ф 4.5mm,
Passage is deformed into 0.3mm or so, drawing speed 5m/min.
Step 6：The silk material completed in step 5 is carried out to on-line solution, aligning again in tube furnace, is thrown convenient for finished surface
Light.Solid solubility temperature is 810 DEG C, speed 5m/min.
Step 7：The silk material aligned in step 6 is subjected to the solid solution state silk material that surface polishing is prepared into Ф 1.
The country initially based on imitated, but gradually forms the development of high-strength beta-titanium alloy since the 1970s
The alloy system of oneself, there is a variety of high-strength titanium alloys such as TB2, TB3, but after its timeliness strength level in 1300MPa hereinafter,
Beta titanium alloy silk material prepared by the present invention has the characteristics that high intensity (>=1300MPa), and it is low to solve steel spring specific strength,
The problems such as not corrosion-resistant, meets the requirement of aerospace titanium alloy spring.
Claims (7)
1. a kind of spring preparation method of beta titanium alloy silk material, which is characterized in that include the following steps：
Step 1：Use beta titanium alloy ingot casting for raw material, flat-die forging is the bar of 120~Ф of Ф 150mm, then Centreless lathe
Vehicle descales and removes forge crack；
Step 2：Bar finish forge prepared by step 1 at 40~Ф of Ф 60mm bar, using Centreless lathe by the oxidation on surface
Skin vehicle removes, thinning surface crackle；
Step 3：Rolling bar prepared by step 2 at 8~Ф of Ф 9mm bar, using Centreless lathe by the oxide skin on surface
Vehicle removes, thinning surface crackle；
Step 4：By surface treated bar in step 3 at 700 DEG C~720 DEG C in tube furnace, 13~15m/min speed
Lower laser heating forms oxide layer, and is gently drawn once using drawing die when bar is come out of the stove, while adhering to stone on silk material surface
Black breast；
Step 5：By the blank in step 4 through hot pull, it is prepared into the silk material blank of 1.2~Ф of Ф 3.2mm；
Step 6：The silk material of drawing in step 5 is subjected to solution treatment, is continuously applied drawing at silk material both ends while solution treatment
Power is aligned；
Step 7：The silk material aligned in step 6 is subjected to the silk material that surface polishing is prepared into 1.0~Ф of Ф 3mm.
2. a kind of preparation method of spring beta titanium alloy silk material according to claim 1, which is characterized in that step 1
In, the temperature of flat-die forging is 1100 DEG C~1170 DEG C.
3. a kind of preparation method of spring beta titanium alloy silk material according to claim 1, which is characterized in that step 2 and
In 3, it is all made of abrasive machine thinning surface crackle.
4. a kind of preparation method of spring beta titanium alloy silk material according to claim 1, which is characterized in that step 4
In, the diameter of drawing die is smaller 0.1mm than diameter of rod.
5. a kind of preparation method of spring beta titanium alloy silk material according to claim 1, which is characterized in that step 4
In, drawing die is installed in graphite, and aquadag is housed in graphite, when silk material passes through wire drawing die diameter by pulling-down 0.1mm,
Aquadag is attached to silk material surface.
6. a kind of preparation method of spring beta titanium alloy silk material according to claim 1, which is characterized in that step 5
In, hot-pull technique is：It is first heated in 700 DEG C~750 DEG C temperature ranges, Ф 4.5mm, passage deformation is drawn to from Ф 8mm
Surface inspection reconditioning is then carried out for 0.5mm and is heated in 680 DEG C~720 DEG C temperature ranges after repeating step 4, from Ф
4.5mm is drawn to Ф 1.15~Ф 3.15mm, and passage is deformed into 0.1mm~0.3mm.
7. a kind of preparation method of spring beta titanium alloy silk material according to claim 1, which is characterized in that step 6
In, solution treatment carries out in tube furnace, and the temperature of solution treatment is 780 DEG C~840 DEG C, and speed is 4~6m/min.
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