CN105344899B - A kind of cold-heading processing method of TC16 titanium alloys plate nut - Google Patents
A kind of cold-heading processing method of TC16 titanium alloys plate nut Download PDFInfo
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- CN105344899B CN105344899B CN201510887678.0A CN201510887678A CN105344899B CN 105344899 B CN105344899 B CN 105344899B CN 201510887678 A CN201510887678 A CN 201510887678A CN 105344899 B CN105344899 B CN 105344899B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
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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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- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention provides a kind of cold-heading processing method of TC16 titanium alloys plate nut.This method comprises the following steps：TC16 titanium alloy plate nuts blank is pre-processed, and obtains pretreated TC16 titanium alloys plate nut blank；Pretreated TC16 titanium alloys plate nut blank is carried out to put hydrogen processing, the blank through putting hydrogen processing is obtained；Solution treatment is carried out to the blank through putting hydrogen processing, then through water quenching, obtains the blank through solution treatment；Blank through solution treatment is carried out into magnetic field impulse cold-heading to shape, the blank shaped；The blank shaped is subjected to vacuum annealing processing, TC16 titanium alloy plate nuts are obtained.The method of the present invention can improve the temperature-room type plasticity of titanium alloy, and then can realize that its fastener comparatively fast shapes at room temperature, and its frock is simple, it is easy to accomplish automated production.
Description
Technical field
The present invention relates to a kind of cold-heading processing method of TC16 titanium alloys plate nut, belong to machining manufacturing technology neck
Domain；Further belong to fastener processing technique field.
Background technology
TC16 titanium alloys are a kind of raw material of conventional titanium alloy fastener, and the alloy belongs to high strength titanium alloy, its
Not only there is higher mechanical property, while have excellent cold heading performance, cold upset forming can be achieved, can meet it is efficient, continuously,
Automatically the requirement produced.At present, the bolt of minor diameter, screw and self-locking nut are using the shaping of cold-heading method.
The hydrogen treatment technology of titanium alloy refers to titanium alloy be carried out oozing hydrogen at a certain temperature, when hydrogen content reaches in titanium alloy
During to normal concentration, hydrogen can change titanium alloy institutional framework, promote its processing performance and mechanical property to be improved.Titanium is closed
Gold is carried out after hydrogen processing, recycles vacuum annealing dehydrogenation, it is ensured that titanium alloy does not occur clear and melodious in use.Utilize the technology
The transition temperature of titanium alloy beta phase is reduced, the ratio of β phases is improved, so as to improve the plasticity of titanium alloy.Pass through hydrogen deduced plasticity
Titanium alloy deformation at room temperature performance is would be even more beneficial to, the cold upset forming of titanium alloy is realized, therefore, as titanium alloy puts hydrogen treatment technology
It is gradually ripe, provide feasibility for application of this method in terms of titanium alloy cold upset forming basic.
Magnetic pulse forming techniques be it is a kind of using strong pulsed magnetic field to by electromagnetic force metal stock carry out plasticity add
The high energy rate forming technology of work.Electromagnetic force required for being shaped in plastic processing acts on to be processed in the form of a pulse
Metal stock.It is as a kind of novel processing technology of environmental protection, with Forming Workpiece precision is high, forming speed is fast, can be big
Width improves the forming limit of material, mould loss is small, processing part stability is high, be easy to implement the advantages such as automated production, mesh
Preceding to be applied to the fields such as Aero-Space, weapon manufacture and other manufacturing industries, application prospect is very wide.
In place of the deficiencies in the prior art：
Although TC16 titanium alloy cold-headings processing technology can be directed to supporting plate spiral shell with the fastener of production section small deformation amount
The fastener of female (deflection reaches more than 90%) this aximal deformation value, existing cold upset forming technique can not meet deformation will
Ask, it is impossible to be processed using cold-heading.But under heat effect, its institutional framework will deteriorate, and influence its mechanical performance, together
When thermal upsetting die heat with cyclic loading in the presence of, service life is low, production cost increase.
The content of the invention
In order to solve above-mentioned shortcoming and defect, it is an object of the invention to provide a kind of TC16 titanium alloys plate nut
Cold-heading processing method.
To reach above-mentioned purpose, the invention provides a kind of cold-heading processing method of TC16 titanium alloys plate nut, the party
Method comprises the following steps：
A, TC16 titanium alloy plate nut blank are pre-processed
TC16 titanium alloy plate nuts blank is subjected to pickling, the TC16 titanium alloy plate nut bases after pickling are obtained
Material, then dry after the TC16 titanium alloy plate nut blanks after pickling are cleaned up, obtain pretreated TC16 titaniums and close
Golden plate nut blank；
B, put hydrogen processing
The pretreated TC16 titanium alloys plate nut blank is carried out to put hydrogen processing, the base through putting hydrogen processing is obtained
Material；Counted using the gross weight of the pretreated TC16 titanium alloys plate nut blank as 100%, put hydrogen processing procedure and be filled with hydrogen
The amount of gas is 0.6wt%-1.0wt%；
C, solution treatment
Solution treatment is carried out to the blank through putting hydrogen processing, then through water quenching, obtains the blank through solution treatment；
D, magnetic field impulse cold-heading are shaped
Blank through solution treatment is carried out into magnetic field impulse cold-heading to shape, the blank shaped；
E, dehydrogenation
The blank shaped is subjected to vacuum annealing processing, the TC16 titanium alloys plate nut is obtained.
According to method of the present invention, plate nut blank used is the conventional equipment that this area is used, for example, exist
In the preferred embodiment of the present invention, the blank is the TC16 titanium alloy bars of different-diameter.
According to method of the present invention, TC16 titanium alloy plate nuts blank is carried out after pickling in step a, then successively
The TC16 titanium alloy plate nut blanks after pickling are cleaned up using acetone, ethanol；Wherein, the purpose of pickling is to remove
The oxide-film of titanium alloy surface.
According to method of the present invention, the pickling operation described in step a is the routine operation of this area, in the present invention
In preferred embodiment, pickle used in pickling be nitric acid in nitric acid and the mixed aqueous solution of hydrofluoric acid, the pickle,
The volume ratio of hydrofluoric acid and water is 2:1:7.
According to method of the present invention, the drying operation described in step a is the routine operation of this area, and the present invention is right
The temperature and time of drying is not required, and those skilled in the art can need to select suitable drying bar according to field operation
Part, as long as guaranteeing to realize the purpose of drying.
According to method of the present invention, step b puts that hydrogen processing procedure is filled with the amount of hydrogen and step b is obtained through putting hydrogen
The hydrogen content in blank after processing is identical, and the hydrogen content is calculated using difference weight method and obtained, i.e.,：Pretreated TC16 titaniums
The weight of alloy plate nut blank be m, step b obtain through put hydrogen processing after blank quality be M, then the hydrogen content=
[(M-m)/m] × 100%.
According to method of the present invention, it is preferable that the temperature for putting hydrogen processing described in step b is 550-800 DEG C, is protected
The warm time is 2-4h.
According to method of the present invention, in the preferred embodiment of the present invention, the hydrogen of putting described in step b is treated
Journey is carried out in hydrogen treatment furnace, and putting the vacuum of hydrogen treatment furnace in hydrogen processing procedure needs to be maintained at 10-3The Pa orders of magnitude.
According to method of the present invention, it is preferable that the temperature of the solution treatment described in step c is 650-750 DEG C, when
Between be 1-3h.
According to method of the present invention, in the preferred embodiment of the present invention, the solution treatment described in step c
Journey is carried out in heat-treatment furnace.
According to method of the present invention, the water quenching described in step c is water quenching to room temperature.
According to method of the present invention, it is preferable that the magnetic field impulse discharge voltage described in step d is 1-4kV, electric discharge electricity
Hold for 100-2660 μ F.
According to method of the present invention, in the preferred embodiment of the present invention, step d is in magnetic field impulse cold-heading processing
Carried out in building mortion, the schematic diagram of the device is as shown in Fig. 2 from figure 2 it can be seen that the device includes upper mounting plate 1, absolutely
Listrium 2, coil 3, driving plate 4, amplifier 5, magnetic pulse formation mould 6, heating plate 7, insulation board 8 and lower platform 9；
Step b can be carried out according to operation in detail below：
By through put hydrogen processing, solution treatment blank be put into magnetic pulse formation mould 6, mold tooling is adjusted, lead to
Cross magnetic field impulse power supply to discharge to magnet (coil 3) and carry out magnetic field impulse cold-heading and shape, by remote computer control, by magnetic arteries and veins
Rush the energy stored in power capacitor and pass through coil discharge, electric current and the induced-current phase separation in driving plate 4 of coil, production
Drift in magnetisation field force, driving magnetic pulse formation mould 6, impacts titanium alloy sample, discharge voltage is 1-4kV, discharge capacity
For 100-2660 μ F, experiment, the blank shaped are completed.
According to method of the present invention, it is preferable that the temperature of the vacuum annealing processing described in step e is 500-650
DEG C, the time is 4-8h.
According to method of the present invention, the dehydrogenation process in step e is also to be carried out in hydrogen treatment furnace, dehydrogenation
The vacuum of hydrogen treatment furnace needs to be maintained at 10 in processing procedure-2The Pa orders of magnitude；It is the side handled using vacuum annealing in step e
Hydrogen content is reduced to standard value (0.012wt%) by method.
The cold-heading processing method for the TC16 titanium alloy plate nuts that the present invention is provided utilizes magnetic field impulse under hydrogen booster action
Cold-heading process technology obtains titanium alloy fastener；I.e. method of the invention hydrogenated titanium alloy room temperature be plasticized and magnetic field impulse into
Shape is improved under the double action of forming limit, can improve the temperature-room type plasticity of titanium alloy, and then its fastener can be realized in room
The lower very fast shaping of temperature, and its frock is simple, it is easy to accomplish automated production；
Meanwhile, titanium alloy, which puts hydrogen processing, can also improve the cutting ability of titanium alloy, be conducive to after its fastener blank
Continuous processing, is conducive to improving the mechanical performance of fastener, and then can significantly improve production efficiency, reduces production cost, promotes
Its Aero-Space, weapon manufacture etc. field application.
Brief description of the drawings
The flow chart of the cold-heading processing method of Fig. 1 TC16 titanium alloys plate nuts of the present invention；
Fig. 2 is processed into shape dress for the cold-heading process steps d magnetic field impulse cold-headings of TC16 titanium alloys plate nut of the present invention
The schematic diagram put.
Main Reference label declaration：
1st, upper mounting plate 2, insulation board 3, coil 4, driving plate 5, amplifier
6th, magnetic pulse formation mould 7, heating plate 8, insulation board 9, lower platform.
Embodiment
In order to which technical characteristic, purpose and beneficial effect to the present invention are more clearly understood from, in conjunction with detail below
Embodiment and Figure of description are described further below to technical scheme progress, but it is not intended that can to of the invention
The restriction of practical range.
Embodiment 1
Present embodiments provide a kind of cold-heading processing method of TC16 titanium alloys plate nut, its process chart such as Fig. 1
It is shown, from figure 1 it appears that the cold-heading processing method of TC16 titanium alloy plate nuts specifically includes following steps：
The first step：Sample is cleaned
The oxide-film on TC16 titanium alloy bars (a diameter of 6.2mm) surface is removed with pickle first, after pickling
Titanium alloy blank is cleaned up successively with acetone and alcohol, afterwards dries blank；
Second step：Put hydrogen processing
The ready-made prefabricated sample of the first step is put into tubular type hydrogen treatment furnace, before being flushed with hydrogen, the vacuum of hydrogen treatment furnace will be protected
Hold 10-3The Pa orders of magnitude, put hydrogen temperature for 650 DEG C, are incubated 2 hours；Finally obtain hydrogen content and put hydrogen sample for 0.65wt%；
3rd step：Solution treatment
The hydrogen sample of putting obtained to second step carries out solution treatment, and the temperature of solution treatment is 720 DEG C, and processing time is
1h, processing terminate after again through water quenching to room temperature, obtain the blank through solution treatment；
4th step：Magnetic pulse formation
Blank through solution treatment is put into magnetic pulse formation mould, mold tooling is adjusted, passes through magnetic field impulse electricity
Source carries out magnetic pulse formation experiment to magnet (coil 3) electric discharge, by remote computer control, will be stored up in magnetic field impulse power capacitor
The energy deposited is by coil discharge, and the induced-current phase separation on the electric current and driving plate of coil produces magnetic field force, drives magnetic arteries and veins
Drift in punching forming mould, impacts titanium alloy sample, and discharge capacity is 2660 μ F, and discharge voltage is 2500V, completes experiment；
5th step：Dehydrogenation
Hydrogenated titanium alloy sample of 4th step after processing is put into hydrogen treatment furnace, is 600 DEG C in dehydrogenation temperature, removes
The hydrogen time is under conditions of 6h, the method handled using vacuum annealing reduces the hydrogen content in hydrogenated titanium alloy sample, so that hydrogen
Content reaches standard value (0.012wt%), obtains TC16 titanium alloy plate nuts；Prepared using existing cold-heading processing technology
During TC16 titanium alloy plate nuts, because the deformability of itself material is not enough, office can occur for deformed area in preparation process
Portion ftractures, and leads to not shape plate nut；And can by the cold-heading processing method of the TC16 titanium alloy plate nuts of the present invention
To effectively improve the deformation performance of material, the cold-heading processing of this aximal deformation value fastener of plate nut is finally realized.
Embodiment 2
A kind of cold-heading processing method of TC16 titanium alloys plate nut is present embodiments provided, wherein, this method is specifically wrapped
Include following steps：
The first step：Sample is cleaned
The oxide-film on TC16 titanium alloy bars (a diameter of 9.3mm) surface is removed with pickle first, after pickling
Titanium alloy blank is cleaned up successively with acetone and alcohol, afterwards dries blank；
Second step：Put hydrogen processing
The ready-made prefabricated sample of the first step is put into tubular type hydrogen treatment furnace, before being flushed with hydrogen, the vacuum of hydrogen treatment furnace will be protected
Hold 10-3The Pa orders of magnitude, put hydrogen temperature for 700 DEG C, are incubated 3 hours；Finally obtain hydrogen content and put hydrogen sample for 1.0wt%；
3rd step：Solution treatment
The hydrogen sample of putting obtained to second step carries out solution treatment, and the temperature of solution treatment is 710 DEG C, and processing time is
2h, processing terminate after again through water quenching to room temperature, obtain the blank through solution treatment；
4th step：Magnetic pulse formation
Blank through solution treatment is put into magnetic pulse formation mould, mold tooling is adjusted, passes through magnetic field impulse electricity
Source carries out magnetic pulse formation experiment to magnet (coil 3) electric discharge, by remote computer control, will be stored up in magnetic field impulse power capacitor
The energy deposited is by coil discharge, and the induced-current phase separation on the electric current and driving plate of coil produces magnetic field force, drives magnetic arteries and veins
Drift in punching forming mould, impacts titanium alloy sample, and discharge capacity is 2660 μ F, and discharge voltage is 3500V, completes experiment；
5th step：Dehydrogenation
Hydrogenated titanium alloy sample of 4th step after processing is put into hydrogen treatment furnace, is 650 DEG C in dehydrogenation temperature, removes
The hydrogen time is under conditions of 7h, the method handled using vacuum annealing reduces the hydrogen content in hydrogenated titanium alloy sample, so that hydrogen
Content reaches standard value (0.012wt%), obtains TC16 titanium alloy plate nuts.
Claims (5)
1. a kind of cold-heading processing method of TC16 titanium alloys plate nut, wherein, this method comprises the following steps：
A, TC16 titanium alloy plate nut blank are pre-processed
TC16 titanium alloy plate nuts blank is subjected to pickling, the TC16 titanium alloy plate nut blanks after pickling are obtained, then
Dried after TC16 titanium alloy plate nut blanks after pickling are cleaned up, obtain pretreated TC16 titanium alloys supporting plate
Nut blank；
B, put hydrogen processing
The pretreated TC16 titanium alloys plate nut blank is carried out to put hydrogen processing, the blank through putting hydrogen processing is obtained；
Counted using the gross weight of the pretreated TC16 titanium alloys plate nut blank as 100%, put hydrogen processing procedure and be filled with hydrogen
Amount be 0.6wt%-1.0wt%；
C, solution treatment
Solution treatment is carried out to the blank through putting hydrogen processing, then through water quenching, obtains the blank through solution treatment；
D, magnetic field impulse cold-heading are shaped
Blank through solution treatment is carried out into magnetic field impulse cold-heading to shape, the blank shaped；
E, dehydrogenation
The blank shaped is subjected to vacuum annealing processing, the TC16 titanium alloys plate nut is obtained.
2. according to the method described in claim 1, wherein, described in step b put hydrogen processing temperature be 550-800 DEG C, protect
The warm time is 2-4h.
3. according to the method described in claim 1, wherein, the temperature of the solution treatment described in step c is 650-750 DEG C, when
Between be 1-3h.
4. according to the method described in claim 1, wherein, magnetic field impulse discharge voltage described in step d is 1-4kV, electric discharge electricity
Hold for 100-2660 μ F.
5. according to the method described in claim 1, wherein, the temperature of vacuum annealing described in step e processing is 500-650
DEG C, the time is 4-8h.
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| CN106854742B (en) * | 2016-12-29 | 2018-11-06 | 西部超导材料科技股份有限公司 | The preparation method of silk material is justified in a kind of cold-heading with TC16 alloy discs |
| CN113549855B (en) * | 2021-07-20 | 2022-06-07 | 南京工业大学 | Preparation method of hydrogen-containing titanium alloy wire for additive manufacturing |
| CN113909574A (en) * | 2021-09-30 | 2022-01-11 | 中国航空工业标准件制造有限责任公司 | Groove machining method for earless supporting plate nut |
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| US4023225A (en) * | 1974-11-01 | 1977-05-17 | Anatoly Andreevich Tochilkin | Method of fabrication of headed-shank parts from high-strength two-phase titanium alloys |
| CN101435062A (en) * | 2008-10-21 | 2009-05-20 | 宝鸡市华西金属科技有限责任公司 | Novel process for hot upsetting titanium alloy workpiece |
| RU2431538C1 (en) * | 2010-05-24 | 2011-10-20 | Закрытое акционерное общество "Тектос-АПМ" | Method of fabricating rod threaded fasteners with heads from thermal-hardened high-strength titanium alloys |
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2015
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|---|---|---|---|---|
| US4023225A (en) * | 1974-11-01 | 1977-05-17 | Anatoly Andreevich Tochilkin | Method of fabrication of headed-shank parts from high-strength two-phase titanium alloys |
| CN101435062A (en) * | 2008-10-21 | 2009-05-20 | 宝鸡市华西金属科技有限责任公司 | Novel process for hot upsetting titanium alloy workpiece |
| RU2431538C1 (en) * | 2010-05-24 | 2011-10-20 | Закрытое акционерное общество "Тектос-АПМ" | Method of fabricating rod threaded fasteners with heads from thermal-hardened high-strength titanium alloys |
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| 置氢TC16钛合金室温变形行为;孙中刚等;《稀有金属材料与工程》;20110228;第40卷(第02期);第357-361页 * |
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Address after: 100024 North East military villa, eight Li bridge, Chaoyang District, Beijing Patentee after: China Institute of Aeronautical Manufacturing Technology Address before: 100024 North East military villa, eight Li bridge, Chaoyang District, Beijing Patentee before: Beijing Aviation Manufacturing Engineering Institute of China Aviation Industry Group Company |
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