CN109469817A - The high pressure gas cylinder aluminium alloy inner container and its manufacturing method of one end back cover - Google Patents
The high pressure gas cylinder aluminium alloy inner container and its manufacturing method of one end back cover Download PDFInfo
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- CN109469817A CN109469817A CN201811600503.7A CN201811600503A CN109469817A CN 109469817 A CN109469817 A CN 109469817A CN 201811600503 A CN201811600503 A CN 201811600503A CN 109469817 A CN109469817 A CN 109469817A
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- spinning
- aluminium alloy
- inner container
- alloy inner
- high pressure
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 205
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 52
- 238000009987 spinning Methods 0.000 claims abstract description 246
- 238000000034 method Methods 0.000 claims abstract description 43
- 230000008569 process Effects 0.000 claims abstract description 36
- 239000007789 gas Substances 0.000 claims description 132
- 238000004140 cleaning Methods 0.000 claims description 49
- 238000010438 heat treatment Methods 0.000 claims description 46
- 238000012545 processing Methods 0.000 claims description 44
- 238000000227 grinding Methods 0.000 claims description 28
- 238000001514 detection method Methods 0.000 claims description 23
- 230000007547 defect Effects 0.000 claims description 19
- 238000010791 quenching Methods 0.000 claims description 19
- 230000000171 quenching effect Effects 0.000 claims description 19
- 230000032683 aging Effects 0.000 claims description 17
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 16
- 230000008859 change Effects 0.000 claims description 14
- 230000007246 mechanism Effects 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 8
- 230000007812 deficiency Effects 0.000 claims description 8
- 238000007689 inspection Methods 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 239000001294 propane Substances 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 7
- 210000000232 gallbladder Anatomy 0.000 claims description 7
- 238000003754 machining Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 6
- 230000003746 surface roughness Effects 0.000 claims description 6
- 230000008719 thickening Effects 0.000 claims description 6
- 238000012790 confirmation Methods 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 5
- 230000000750 progressive effect Effects 0.000 claims description 5
- 230000007935 neutral effect Effects 0.000 claims description 4
- 239000012634 fragment Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000009966 trimming Methods 0.000 claims description 2
- 238000007514 turning Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 10
- 238000002360 preparation method Methods 0.000 abstract description 6
- 239000002994 raw material Substances 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000003672 processing method Methods 0.000 abstract description 2
- 238000003466 welding Methods 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 14
- 229910052782 aluminium Inorganic materials 0.000 description 14
- 239000004411 aluminium Substances 0.000 description 14
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 14
- 229920000049 Carbon (fiber) Polymers 0.000 description 8
- 239000004917 carbon fiber Substances 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000004744 fabric Substances 0.000 description 6
- 238000005070 sampling Methods 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000002604 ultrasonography Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 238000004804 winding Methods 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 239000012736 aqueous medium Substances 0.000 description 3
- LFYJSSARVMHQJB-QIXNEVBVSA-N bakuchiol Chemical compound CC(C)=CCC[C@@](C)(C=C)\C=C\C1=CC=C(O)C=C1 LFYJSSARVMHQJB-QIXNEVBVSA-N 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000013016 damping Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 238000009991 scouring Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000004506 ultrasonic cleaning Methods 0.000 description 3
- 235000013399 edible fruits Nutrition 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
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- 239000003795 chemical substances by application Substances 0.000 description 1
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- 150000001875 compounds Chemical class 0.000 description 1
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- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 208000020442 loss of weight Diseases 0.000 description 1
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- 239000011707 mineral Substances 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
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- 229920005989 resin Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/21—Shaping processes
- F17C2209/2172—Polishing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/21—Shaping processes
- F17C2209/2181—Metal working processes, e.g. deep drawing, stamping or cutting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The present invention provides the high pressure gas cylinder aluminium alloy inner container and its manufacturing method of a kind of one end back cover, aluminium alloy inner container is the integrated seamless structure of one end back cover, other end closing in formed head and bottleneck, including direct tube section, and it is located at the back cover and end socket at direct tube section both ends, bottleneck is located on end socket；The length of aluminium alloy inner container is less than 5m, and the nominal outside diameter of direct tube section is Ф 406- Ф 850mm, and the rated pressure of high pressure gas cylinder is 20-30Mpa.The present invention is using slab as raw material, and the overall processing method for using spinning, product integrated welding seam-free, preparation process is simple, and easy to operate, low energy consumption, and pollution is small, and the loss of entire manufacturing process chinese raw materials is fewer.The aluminium alloy inner container that the manufacturing method of the present invention processes has the characteristics that high reliablity, wall be thin, light weight；Its material structure even compact, integral strength excellent effect have high pressure resistant property, have great importance to the manufacture of high pressure gas cylinder.
Description
Technical field
The invention belongs to high-pressure bottle technical fields, and in particular to a kind of high pressure gas cylinder aluminium alloy inner container of one end back cover
And its manufacturing method.
Background technique
High pressure gas cylinder is widely used for the national economy such as industrial and mineral production, building, traffic, ocean, aviation, medical treatment, military affairs
Various industries.Capacity, bottle wall thickness and the manufacture craft and material of high pressure gas cylinder can all influence the performance of high pressure gas cylinder.Such as day
Right gas and hydrogen are given priority to and widely used clean energy resource in a kind of world wide.20-30MP high pressure gas is used at present
Bottle storage and transportation and use compressed natural gas (CNG), compression hydrogen and other compression industrial gasses are the mobile masters used of these gases
Want mode.
Currently, aluminum alloy inner container carbon fiber winds high pressure gas cylinder with many merits entirely, gradually replace traditional steel gas
Bottle, becomes the main product of world today's high pressure gas cylinder.Its advantage is as follows:
(1) substantially loss of weight；Using the gas cylinder of aluminium alloy inner container composite winding, material thickness is only steel cylinder under equal performance
50%-70%, and density is lower, thus its weight is only the 35%-40% of traditional steel cylinder.
(2) fail-safety is good；Aluminum alloy inner container carbon fiber full wrapped cylinders are compound using aluminium alloy inner container and carbon fiber
Material reinforcement, it is every square centimeter on fiber it is up to ten thousand up to thousands of, when gas cylinder overloads and a small amount of fibrous fracture occurs, carry
Lotus can distribute rapidly on unbroken fiber, this can make gas cylinder that will not lose carrying within short-term or even significant period of time
Ability greatly improves safety.
(3) damping property is good；Fiber In Composite Material and resin matrix interface have damping capaicty, and shock damping is good, acoustic resistive
It is also very high to shake fatigue behaviour.
(4) compared with the complicated procedures of forming that seamless steel gas cylinder needs, pressure stochastic distribution is more flexible, is easy transformation, work
Sequence is more simplified, also automation easy to accomplish, and energy consumption is well below the production process of steel gas cylinder.
For example, the aluminum alloy inner container carbon fiber full wrapped cylinders of outer diameter Φ 406- Φ 850mm, length no more than 5m are mainly used
Make the movement such as large-scale natural gas automobile CNG fuel gas cylinder, modularization CNG gas cylinders group storage and transportation gas cylinder and uses big capacity high pressure gas
Bottle.
But limited by material production and technical capability, China also fails to production diameter greater than Φ 406mm's at present
Aluminum alloy inner container carbon fiber full wrapped cylinders, key problem are exactly that aluminium alloy inner container can not manufacture, and are relied primarily in import.
In the above context, it is fired to further grasp large-scale compression natural gas, hydrogen and mixing with autonomous property right
The key technology and product of the storage and transportation apparatus such as gas, urgent need exploitation have the height of the characteristics such as big volume, light weight, highly reliable
Air bottle aluminium alloy inner container product.
Summary of the invention
It is an object of the invention to propose the high pressure gas cylinder aluminium alloy inner container and its manufacturing method of a kind of one end back cover.So that
The problem of current high pressure gas cylinder volume is small, and quality is overweight, poor reliability is solved less.
To achieve the goals above, the invention provides the following technical scheme:
A kind of high pressure gas cylinder aluminium alloy inner container of one end back cover, high pressure gas cylinder with aluminium alloy inner container is one end back cover, another
The integrated seamless structure of one end closing in formed head and bottleneck, including back cover, direct tube section, end socket and bottleneck, the back cover and
End socket is located at the both ends of the direct tube section, and the bottleneck is located on the end socket；The high pressure gas cylinder aluminium alloy inner container
Length be less than 5m, the nominal outside diameter of the direct tube section is Ф 406- Ф 850mm, and the rated pressure of the high pressure gas cylinder is 20-
30Mpa。
High pressure gas cylinder aluminium alloy inner container as described above, it is preferable that the wall thickness of the direct tube section is 1-10mm, the straight tube
The whole straightness of section is not more than 0.5mm/m；
Preferably, the tolerance of the wall thickness of the direct tube section is less than or equal to ± 0.15mm；
More preferably, the direct tube section arbitrary line fragment position part straightness is not more than 0.5mm/300mm；
More preferably, the circularity of the direct tube section any position is not more than 0.5mm；
More preferably, the inside surface roughness of the direct tube section is less than Ra1.6 μm, the outer surface roughness of the direct tube section
Less than Ra3.2 μm.
High pressure gas cylinder aluminium alloy inner container as described above, it is preferable that the structure type of the end socket is spheroid shape end socket, dish
Type end socket or dome-type end socket, the structure type of the back cover is identical as the structure type of the end socket, the thickness of the end socket
It is thickened from edge to the uniform gradual change in bottleneck position, center uniform gradual change of the thickness of the back cover from edge to back cover thickens；
Preferably, the thickness of the end socket is thickened from the 5-8mm at edge to the uniform gradual change of the 10-15mm at bottleneck position；
More preferably, the uniform gradual change of the 15-20mm at center of the thickness of the back cover from the 5-8mm at edge to back cover increases
It is thick；
More preferably, the length of the bottleneck is 40mm, the outer diameter of the bottleneck is 50mm, and the internal diameter of the bottleneck is
28mm。
The manufacturing method of the high pressure gas cylinder aluminium alloy inner container of described in any item one end back covers as above, it is preferable that the system
The method of making includes the following steps:
S1, back cover rotary press modelling carry out the common rotation of multi-pass heating to round or rectangular slab using conventional spinning equipment
The seamless tubular goods being made of back cover and direct tube section open at one end is made in pressure or draw spinning；
S2, aluminium alloy inner container spinning control is standby, carries out multi-pass strength to the direct tube section of seamless tubular goods made from step S1
The processing of outward turning pressing formation, obtains aluminium alloy inner container spinning pipe；
S3, aluminium alloy inner container spinning pipe flaw detection, to the back cover and straight tube of aluminium alloy inner container spinning pipe obtained in step S2
Duan Jinhang ultrasonic inspection checks inner surface stomata, is mingled with, is recessed and micro-crack defect；
The rotary press modelling of S4, end socket and bottleneck opens the aluminium alloy inner container spinning pipe using heating closing in spinning machine
The rotary press modelling that end socket and bottleneck are carried out at mouthful, obtains rotary press modelling part B；
S5, the processing of bottleneck centre bore add the machine for carrying out bottleneck centre bore of rotary press modelling part B obtained in step S4
Work obtains rotary press modelling part C；
S6, curved surface flaw detection carry out closing in quality flaw detection to rotary press modelling part C obtained in step S5, examine end socket position
Whether the manufacturing deficiency of orange peel, folding is had；
S7, curved interior surface reconditioning, according to result of detection, using end socket inner surface grinding machine tool to being found in step S6
End socket defect in inner surface carries out reconditioning, obtains up-to-standard rotary press modelling part C；
S8, heat treatment carry out T6 process to rotary press modelling part C obtained in step S7, obtain high pressure gas cylinder aluminium
Alloy liner base；
S9, bottleneck processing, using dedicated bottleneck machining center to high pressure gas cylinder aluminium alloy inner container obtained in step S8
Internal diameter of the bottleneck, the outer diameter of base are machined out, and process bottle outlet internal and external screw thread, obtain high pressure gas cylinder aluminium alloy inner container；
S10, liner cleaning.
The manufacturing method of high pressure gas cylinder aluminium alloy inner container as described above, it is preferable that in the step S1, the common rotation
Pressing equipment is the common spinning machine of single-wheel numerical control or the common spinning machine of double rotary wheel numerical control with image feature；Spin-on process is Dan Xuan
Take turns multi-pass conventional spinning or double rotary wheel multi-pass mirror image conventional spinning；Using end shape and one end back cover when spinning
The identical mold of the back cover inner surface configuration of high pressure gas cylinder aluminium alloy inner container carries out secondary process, and the length of mold is seamless tubular goods
1.2-1.5 times of length；
Preferably, the tail end of the mold has device for discharging, can automatic discharging；
More preferably, the conventional spinning equipment is the common spinning machine of double rotary wheel numerical control with image feature.
The manufacturing method of high pressure gas cylinder aluminium alloy inner container as described above, it is preferable that the step S1 specifically includes as follows
Step:
Slab is waited for that spinning position is heated to 200-400 DEG C by S1a, heating of plate blank；
S1b, back cover is preforming, and the double rotary wheel multi-pass mirror image conventional spinning using 1-3 passage is to heating in step S1a
Slab carries out the preforming processing of back cover, which is that not to be bonded mold preforming, during spinning, persistently plus
Heat makes spinning part be kept for 200-400 DEG C；
S1c, back cover molding carry out 3-5 passage to preformed member obtained in step S1b using progressive thickness spin-on process
Double rotary wheel multi-pass mirror image composite spinning, obtain back cover molded part, during spinning, continuous heating, make spinning part protect
Hold 200-400 DEG C；
S1d, direct tube section it is preforming, using the double rotary wheel multi-pass mirror image composite spinning of 6-10 passage in step S1c
Back cover molded part obtained carries out the preforming of direct tube section to spinning position, to be made by back cover and straight tube open at one end
The seamless tubular goods that section is constituted, during spinning, continuous heating makes spinning part be kept for 200-400 DEG C；
Preferably, in step S1c and step S1d, derotation is interted while double rotary wheel multi-pass mirror image conventional spinning
Technique, for thickening for direct tube section blank to be processed；
More preferably, the heating in the step S1a-S1d carries out burning bright eruption heating using oxygen, propane/LNG.
The manufacturing method of high pressure gas cylinder aluminium alloy inner container as described above, it is preferable that the step S2 specifically includes as follows
Step:
S21, the rotary press modelling of aluminium alloy inner container spinning pipe direct tube section, using three-wheel mistake away from dextrorotation spin-on process to step S1
The direct tube section of seamless tubular goods obtained carries out 2-4 spinning process, obtains spinning part A；It is equal to when spinning using processing length and is set
Determine 1.2-1.4 times of product length of core model and carries out spinning secondary process；
S22, the Processing to length of aluminium alloy inner container spinning pipe determine spinning part A obtained in step S21 using sawing machine
Long processing, obtains aluminium alloy inner container spinning pipe；
S23, the cleaning of aluminium alloy inner container spinning pipe, using cleaning machine to aluminium alloy inner container spinning obtained in step S22
Pipe is cleaned；
S24, reconditioning aluminium alloy inner container spinning pipe close the aluminium after cleaning in step S23 using numerical control internal-external cavetto grinding machine
The reconditioning that golden liner spinning pipe carries out surfaces externally and internally scuffing, damages；
Preferably, the three-wheel mistake in the step S21 is set as 6-12mm away from amount away from the mistake in dextrorotation spin-on process；
Preferably, the cleaning machine in the step S23 is rotary spray cleaning machine or supersonic cleaning machine；
Preferably, the cleaning of the aluminium alloy inner container spinning pipe of one end back cover is using 30-45 DEG C of neutral cleaners of heating
It completes；
More preferably, after the aluminium alloy inner container spinning pipe cleaning of one end back cover using drying apparatus or drying unit is gone
Except remained on surface is water stain.
The manufacturing method of high pressure gas cylinder aluminium alloy inner container as described above, it is preferable that the step S4 specifically includes as follows
Step:
S41, clamping carry out the clamping of aluminium alloy inner container spinning pipe using split-type hollow main shaft；
S42, heating, to being heated to 200-400 DEG C at the spinning to be closed up of aluminium alloy inner container spinning pipe；
The formed spinning of S43, end socket and bottleneck, using unilateral X straight line, Z straight line and rotation three-dimensional insertion packing closing in spinning
Machine carries out multi-pass closing in spinning to the aluminium alloy inner container spinning pipe heated in step S42, obtains rotary press modelling part B；
Preferably, the heating in the step S42 carries out burning bright eruption heating using oxygen, propane/LNG.
High pressure gas cylinder aluminium alloy inner container manufacturing method as described above, it is preferable that the step S7 specifically includes following step
It is rapid:
S71, using clamping tooling clamping rotary press modelling part C；
S72, the automatic endoscope system automatic Observation carried using end socket inner surface grinding machine tool judge that end socket inner surface lacks
Situation is fallen into, corresponding position is recorded, and combines artificial confirmation；
S73, using the end socket inner mold face slot trimming mechanism of end socket inner surface grinding machine tool in the end socket found in step S5
Surface defect carries out reconditioning, obtains up-to-standard rotary press modelling part C；
Preferably, the clamping tooling of the rotary press modelling part C is the hollow clamping tooling of split-type；
Preferably, end socket inner mold face reconditioning is numerical control automatic grinding mechanism, programmable to independently execute.
The manufacturing method of high pressure gas cylinder aluminium alloy inner container as described above, it is preferable that the step S8 includes the following steps:
S81, quenching treatment, is put into glowing furnace for rotary press modelling part C obtained in step S6 and is quenched, by spinning
Molded part C is heated to 525-531 DEG C, and keeps the temperature 2-4 hours in 525-531 DEG C of environment, and then rotary press modelling part C quenches
Fire；
Quenched rotary press modelling part C is transferred to aging furnace and carries out ageing treatment, finally in 160- by S82, ageing treatment
6-10 hours are kept the temperature in 200 DEG C of environment, high pressure gas cylinder aluminium alloy inner container base is made；
Preferably, the glowing furnace is vertical aluminum alloy sealed box type quenching furnace；
More preferably, the aging furnace is car-type aluminium alloy aging furnace.
Compared with the immediate prior art, technical solution provided by the invention is had the following beneficial effects:
The manufacturing method of the high pressure gas cylinder aluminium alloy inner container of one end back cover provided by the invention, overall adding using spinning
Work method, preparation process is simple, easy to operate, and low energy consumption, and pollution is small, and the loss of entire manufacturing process chinese raw materials is fewer,
The cost of raw material is saved.The high pressure gas cylinder aluminium alloy inner container for one end back cover that the manufacturing method of the present invention processes, it is public
Outer diameter is referred to as Φ 406- Φ 850mm, and volume is much higher than the volume of existing standard aluminium alloy inner container；The wall thickness of direct tube section is 1-
10mm has the characteristics that wall is thin, light weight；The tensile strength of direct tube section is more than or equal to 345MPa, yield strength is more than or equal to
310MPa, elongation percentage are more than or equal to 15%；Grain size is organized to be more than or equal to 5 according to ASTME112 standard in direct tube section any position
Grade, interior material structure even compact, integral strength excellent effect have high pressure resistant property, have to the manufacture of high pressure gas cylinder
Important meaning.
It is the preparation method simple process of aluminium alloy inner container provided by the invention, easy to operate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of mesohigh of embodiment of the present invention gas cylinder aluminium alloy inner container；
Fig. 2 is the manufacturing method flow chart of mesohigh of embodiment of the present invention gas cylinder aluminium alloy inner container.
In figure: 1, back cover；2, direct tube section；3, end socket；4, bottleneck.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is general
Logical technical staff's every other embodiment obtained, shall fall within the protection scope of the present invention.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.It should be noted that in the feelings not conflicted
Under condition, the feature in embodiment and embodiment in the present invention be can be combined with each other.
In the description of the present invention, term " connected ", " connection " used in the present invention shall be understood in a broad sense, for example, can
To be to be fixedly connected, may be a detachable connection；It can be directly connected, can also be indirectly connected by intermediate member, it is right
For those skilled in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
The present invention provides a kind of manufacturing method of the high pressure gas cylinder aluminium alloy inner container of one end back cover, and high pressure gas cylinder is closed with aluminium
Golden liner is process by circular or rectangular slab by this manufacturing method；As shown in Figure 1, high pressure gas cylinder aluminium alloy
Liner be one end back cover, other end closing in formed head 3 and bottleneck 4 integrated seamless structure, including back cover 1, direct tube section 2,
End socket 3 and bottleneck 4, back cover 1 and end socket 3 are located at the both ends of direct tube section 2, and bottleneck 4 is located on end socket 3.The structure class of end socket 3
Type is spheroid shape end socket 3, disk bottom 3 or dome-type end socket 3, and the structure type of back cover 1 is identical as the structure type of end socket 3,
In an embodiment of the present invention, the structure type of back cover 1 and end socket 3 is dish-like；As shown in Fig. 2, one end back cover of the invention
The manufacturing method of high pressure gas cylinder aluminium alloy inner container includes the following steps:
S1,1 rotary press modelling of back cover carry out the common rotation of multi-pass heating to round or rectangular slab using conventional spinning equipment
The seamless tubular goods being made of back cover 1 and direct tube section 2 open at one end is made in pressure or draw spinning.Conventional spinning equipment is single-wheel
The common spinning machine of numerical control or the common spinning machine of double rotary wheel numerical control with image feature；Spin-on process is that single spinning roller multi-pass is common
Spinning or double rotary wheel multi-pass mirror image conventional spinning；Using in the high pressure gas cylinder aluminium alloy of end shape and one end back cover when spinning
The identical mold processing of 1 inner surface configuration of back cover of gallbladder, selects the length of mold for 1.2-1.5 times of (example of seamless tubular goods length
Such as 1.2 times, 1.25 times, 1.3 times, 1.35 times, 1.4 times, 1.45 times, 1.5 times)；It is quick in order to facilitate the seamless steel pipe after spinning
Discharging, the mold tail end have device for discharging, can automatic discharging；In an embodiment of the present invention, using with image feature
The common spinning machine of double rotary wheel numerical control carries out double rotary wheel multi-pass mirror image conventional spinning to slab to which seamless tubular goods be made.It selects thick
Degree is 20-25mm (such as 20.5mm, 21mm, 21.5mm, 22mm, 22.5mm, 23mm, 23.5mm, 24mm, 24.5mm, 25mm)
Slab as spinning blank.The step specifically comprises the following steps:
S1a, heating of plate blank wait for that spinning position is heated to 200-400 DEG C (such as 220 to slab using oxygen, propane/LNG
℃,240℃,260℃,280℃,300℃,320℃,340℃,360℃,380℃)；
S1b, back cover 1 is preforming, using the entire spinning track of graphical programming, using the double rotary wheel multiple tracks secondary mirror of 1-3 passage
Preforming processing as conventional spinning to the slab progress back cover 1 heated in step S1a, the spinning process are pre- not to be bonded mold
Molding, during spinning, continuous heating makes spinning part keep 200-400 DEG C of (such as 220 DEG C, 240 DEG C, 260 DEG C, 280
℃,300℃,320℃,340℃,360℃,380℃)；
S1c, back cover 1 form, and carry out the road 3-5 to preformed member obtained in step S1b using progressive thickness spin-on process
Secondary double rotary wheel multi-pass mirror image composite spinning, obtains 1 molded part of back cover, during spinning, continuous heating makes spinning part
Keep 200-400 DEG C (such as 220 DEG C, 240 DEG C, 260 DEG C, 280 DEG C, 300 DEG C, 320 DEG C, 340 DEG C, 360 DEG C, 380 DEG C)；
S1d, direct tube section 2 it is preforming, using 6-10 passage (such as 6 passages, 7 passages, 8 passages, 9 passages, 10 passages)
Double rotary wheel multi-pass mirror image composite spinning direct tube section 2 is carried out to spinning position to back cover obtained in step S1c 1 molded part
It is preforming, so that the seamless tubular goods that is made of back cover 1 and direct tube section 2 open at one end be made, during spinning, continue
Heating makes spinning part keep 200-400 DEG C of (such as 220 DEG C, 240 DEG C, 260 DEG C, 280 DEG C, 300 DEG C, 320 DEG C, 340 DEG C, 360
℃、380℃)。
In step S1c and step S1d, while double rotary wheel multi-pass mirror image conventional spinning intert 4-8 passage (such as
4 passages, 5 passages, 6 passages, 7 passages, 8 passages) derotation technique, for thickening for 2 blank of direct tube section to be processed.Entire spinning
The total spinning pass quantity of process is 10-18 (such as 10 times, 11 times, 12 times, 13 times, 14 times, 15 times, 16 times, 17 times, 18
It is secondary), the length of the direct tube section 2 of seamless tubular goods obtained is not more than 1.7m；The thickness of back cover 1 by edge 5-8mm (such as
5.2mm, 5.4mm, 5.6mm, 5.8mm, 6mm, 6.2mm, 6.4mm, 6.6mm, 6.8mm, 7mm, 7.3mm, 7.6mm, 7.8mm) to
The center of back cover 1 15-20mm (such as 15.5mm, 16mm, 16.5mm, 17mm, 17.5mm, 18.mm, 18.5mm, 19mm,
19.5mm) uniformly gradual change thickens.
S2, the preparation of aluminium alloy inner container spinning pipe, using the conventional spinning equipment in S1 step or in addition using numerical control rotation
Press carries out multi-pass spinning forming processing to the direct tube section 2 of seamless tubular goods obtained in step S1, to obtain in aluminium alloy
Gallbladder spinning pipe；The step specifically comprises the following steps:
S21, the rotary press modelling of aluminium alloy inner container spinning pipe direct tube section 2 are adopted with two spinning rollers/tri- spinning roller strength cnc spinning machines
2-4 times (such as 2 times, 3 times, 4 times) are carried out to seamless tubular goods made from step S1 away from dextrorotation spin-on process with two-wheeled/three-wheel mistake
Spinning process obtains spinning part A；When spinning using processing length be equal to setting 1.2-1.4 times of product length (such as 1.23 times,
1.26 times, 1.29 times, 1.32 times, 1.35 times, 1.38 times) core model carry out spinning processing, two-wheeled/three-wheel mistake is away from dextrorotation spinning side
In method it is wrong away from amount be set as 6-12mm (such as 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm, 10mm, 10.5mm,
11mm,11.5mm)；Seamless tubular goods is 55%-70% through spinning treated total deformation.Spinning part A be one end back cover etc.
The direct tube section 2 of thick straight tube or one end back cover, one end with outer circumferential end frame.
S22, the Processing to length of aluminium alloy inner container spinning pipe determine spinning part A obtained in step S21 using sawing machine
Long processing, obtains aluminium alloy inner container spinning pipe；In an embodiment of the present invention, sawing machine uses twin columns automatic sawing machine, and saw blade uses
The dedicated saw blade of aluminium alloy.
S23, the cleaning of aluminium alloy inner container spinning pipe add 30-45 DEG C using rotary spray cleaning machine or supersonic cleaning machine
(such as 31 DEG C, 32 DEG C, 33 DEG C, 34 DEG C, 35 DEG C, 36 DEG C, 37 DEG C, 38 DEG C, 39 DEG C, 40 DEG C, 41 DEG C, 42 DEG C, 43 DEG C, 44 DEG C)
Neutral cleaners clean aluminium alloy inner container spinning pipe obtained in step S22；Use is dried using dedicated after the completion of cleaning
Tool or drying unit removal remained on surface are water stain；
S24, reconditioning aluminium alloy inner container spinning pipe close the aluminium after cleaning in step S23 using numerical control internal-external cavetto grinding machine
The reconditioning that golden liner spinning pipe carries out surfaces externally and internally scuffing, damages；The step specifically comprises the following steps:
S241 carries out reconditioning using outer surface of the cloth abrasive band to aluminium alloy inner container spinning pipe；
S242 carries out thick reconditioning using inner surface of the Chiba fabric disc to aluminium alloy inner container spinning pipe；
S243 carries out refine mill using inner surface of the scouring pad wheel to aluminium alloy inner container spinning pipe.
S3, aluminium alloy inner container spinning pipe flaw detection, to the back cover 1 and straight tube of aluminium alloy inner container spinning pipe obtained in step S2
Section 2 carry out ultrasonic inspections, check inner surface stomata, be mingled with, be recessed, micro-crack the defects of.
S4, the rotary press modelling of end socket 3 and bottleneck 4, using heating closing in spinning machine to the opening of aluminium alloy inner container spinning pipe
Place carries out the rotary press modelling of end socket 3 and bottleneck 4, obtains rotary press modelling part B；The step specifically comprises the following steps:
S41, clamping carry out the clamping of aluminium alloy inner container spinning pipe using split-type hollow main shaft；
S42, using oxygen, propane/LNG burning to progress bright eruption heating at the spinning to be closed up of aluminium alloy inner container spinning pipe
To 200-400 DEG C (such as 220 DEG C, 240 DEG C, 260 DEG C, 280 DEG C, 300 DEG C, 320 DEG C, 340 DEG C, 360 DEG C, 380 DEG C)；
S43, the formed spinning of end socket 3 and bottleneck 4 are closed up and are revolved using unilateral X straight line, Z straight line and rotation three-dimensional insertion packing
Press to the aluminium alloy inner container spinning pipe that is heated in step S42 carry out 10-18 passage (such as 10 passages, 11 passages, 12 passages,
13 passages, 14 passages, 15 passages, 16 passages, 17 passages, 18 passages) closing in spinning, obtain rotary press modelling part B；In spinning process
In, closing in spinning 1-8 passage (such as 1 passage, 2 passages, 3 passages, 4 passages, 5 passages, 6 passages, 7 passages, 8 passages) has
Derotation, for thickening for 4 position of bottleneck；The thickness of the end socket 3 of rotary press modelling part B obtained by edge 5-8mm (such as
5.2mm, 5.4mm, 5.6mm, 5.8mm, 6mm, 6.2mm, 6.4mm, 6.6mm, 6.8mm, 7mm, 7.3mm, 7.6mm, 7.8mm) to
4 position of bottleneck 10-15mm (such as 10.5mm, 11mm, 11.5mm, 12mm, 12.5mm, 13mm, 13.5mm, 14mm,
14.5mm) uniformly gradual change thickens；
S5, the processing of 4 centre bore of bottleneck carry out the clamping of rotary press modelling part B using the hollow clamping tooling of split-type；Using
Dedicated 4 machining center of bottleneck carries out the machining of 4 centre bore of bottleneck to rotary press modelling part B obtained in step S4, obtains spinning
Molded part C；It is ready for subsequent T6 processing；
S6, curved surface flaw detection, using Special curved surface ultrasound automatic flaw detector to rotary press modelling part C obtained in step S5 into
The flaw detection of row closing in quality, examines whether 3 position of end socket has the manufacturing deficiencies such as orange peel, folding；
S61, using the hollow clamping frock clamping rotary press modelling part C of split-type；
S62 carries out end socket 3 to rotary press modelling part C obtained in step S5 using Special curved surface ultrasound automatic flaw detector
And the full-automatic flaw detection of 4 closing in quality of bottleneck, examine whether 3 position of end socket there are the manufacturing deficiencies such as orange peel, folding.
S7, curved interior surface reconditioning, according to result of detection, using dedicated 3 inner surface grinding machine tool of end socket in step S6
It was found that 3 defect in inner surface of end socket carry out reconditioning, obtain up-to-standard rotary press modelling part C；The step specifically includes following step
It is rapid:
S71, using the hollow clamping frock clamping rotary press modelling part C of split-type；
S72, the automatic endoscope system automatic Observation carried using dedicated 3 inner surface grinding machine tool of end socket are judged in end socket 3
Case of surface defects records corresponding position, and combines artificial confirmation；
S73, using the numerical control automatic grinding mechanism of dedicated 3 inner surface grinding machine tool of end socket to the end socket found in step S6
3 defect in inner surface carry out reconditioning, obtain up-to-standard rotary press modelling part C, during reconditioning, numerical control automatic grinding mechanism can
Programming independently executes.
S8, heat treatment carry out T6 process to rotary press modelling part C obtained in step S7, obtain high pressure gas cylinder aluminium
Alloy liner base；The step specifically comprises the following steps:
Rotary press modelling part C obtained in step S7 is put into vertical aluminum alloy sealed box type quenching furnace and carried out by S81, quenching treatment
Rotary press modelling part C is heated to 525-531 DEG C of (such as 525.5 DEG C, 526 DEG C, 526.5 DEG C, 527 DEG C, 527.5 by quenching treatment
DEG C, 528 DEG C, 528.5 DEG C, 529 DEG C, 529.5 DEG C, 530 DEG C, 530.5 DEG C), and in 525-531 DEG C of (such as 525.5 DEG C, 526
DEG C, 526.5 DEG C, 527 DEG C, 527.5 DEG C, 528 DEG C, 528.5 DEG C, 529 DEG C, 529.5 DEG C, 530 DEG C, 530.5 DEG C) keep the temperature in environment
2-4 hours (such as 2.2 hours, 2.4 hours, 2.6 hours, 2.8 hours, 3 hours, 3.2 hours, 3.4 hours, 3.6 hours, 3.8
Hour), rotary press modelling part C is then subjected to aqueous medium quenching；
Quenched rotary press modelling part C is transferred to car-type aluminium alloy aging furnace and carried out at timeliness by S82, ageing treatment
Reason, finally in 160-200 DEG C of (such as 165 DEG C, 170 DEG C, 175 DEG C, 180 DEG C, 185 DEG C, 190 DEG C, 195 DEG C, 198 DEG C) environment
Heat preservation 6-10 hours (such as 6.3 hours, 6.6 hours, 7 hours, 7.3 hours, 7.7 hours, 8 hours, 8.4 hours, 8.7 hours,
9 hours, 9.3 hours, 9.7 hours), high pressure gas cylinder aluminium alloy inner container base is made.In entire quenching treatment and ageing treatment mistake
Cheng Zhong, high pressure gas cylinder aluminium alloy inner container base are fixed in dedicated heat treatment material frame using dedicated heat treatment tooling is vertical,
In treatment process, one section of 1 ground of back cover is placed upwards.
S9, bottleneck 4 is processed, using dedicated 4 machining center of bottleneck in high pressure gas cylinder aluminium alloy obtained in step S7
4 internal diameter of bottleneck, the outer diameter of gallbladder base are machined out, and process 4 internal and external screw thread of bottle outlet, are obtained in high pressure gas cylinder aluminium alloy
Gallbladder；The step specifically comprises the following steps:
S91, using the hollow clamping frock clamping high pressure gas cylinder aluminium alloy inner container base of split-type；
S92, bottleneck 4 is processed, using dedicated 4 machining center of bottleneck in high pressure gas cylinder aluminium alloy obtained in step S8
Gallbladder base carries out 4 outer diameter of bottleneck, internal diameter, screw thread and carries out High-speed machining, obtains high pressure gas cylinder aluminium alloy inner container, the length of bottleneck 4
Outer diameter for 40mm, bottleneck 4 is 50mm, and the internal diameter of bottleneck 4 is 28mm.
S10, liner cleaning, closes high pressure gas cylinder obtained in step S9 with aluminium using special vertical cylinder liner cleaning machine
The inner cavity of golden liner carries out high pressure water spray cleaning, removes aluminium skimmings and other processing pollution objects；The step specifically includes following step
It is rapid:
S101 is placed on high pressure gas cylinder aluminium alloy inner container is vertical on special vertical cylinder liner cleaning machine, bottleneck 4 to
Under, enter special vertical cylinder liner cleaning machine spraying mechanism inside liner, fixed liner；
S102, is sprayed using high pressure water or ultrasonic cleaning mode carries out clearly the inner cavity of high pressure gas cylinder aluminium alloy inner container
It washes, removes aluminium skimmings and other processing pollution objects.
S11, product inspection test to the high pressure gas cylinder obtained in step S10 with aluminium alloy inner container, obtain high pressure gas
The bottle finished product of aluminium alloy inner container.
S12 carries out carbon fiber winding to the finished product of the obtained high pressure gas cylinder aluminium alloy inner container of step S11, obtains one end
The high pressure gas cylinder of back cover detects the ultimate pressure capacity situation of the high pressure gas cylinder.
The high pressure gas cylinder aluminium alloy inner container prepared through the manufacturing method of the present invention, length are less than 5m, the public affairs of direct tube section 2
Outer diameter is referred to as Ф 406- Ф 850mm, and the wall thickness of direct tube section 2 is 1-10mm, and the whole straightness of direct tube section 2 is not more than 0.5mm/m；
The tolerance of the wall thickness of direct tube section 2 is less than or equal to ± 0.15mm；2 arbitrary line fragment position part straightness of direct tube section is not more than
0.5mm/300mm；The circularity of 2 any position of direct tube section is not more than 0.5mm；The inside surface roughness of direct tube section 2 is less than Ra1.6 μ
The outer surface roughness of m, direct tube section 2 are less than Ra3.2 μm.High pressure gas cylinder aluminium alloy inner container made from the manufacturing method of the present invention
Volume be much higher than the volume of existing standard aluminium alloy inner container, while also there are the characteristics such as thin, the high pressure resistant and light weight of wall thickness.
Embodiment 1
A kind of diameter of phi 420mm, length 2.5m are prepared, wall thickness is in the high pressure gas cylinder aluminium alloy of one end back cover of 4mm
Gallbladder, high pressure gas cylinder rated pressure require to be 25Mpa, specifically include following operating procedure:
S1, back cover rotary press modelling
It selects with a thickness of 20mm, diameter is the slab of Φ 800mm as spinning blank, first by the heating of plate blank to spinning
To 360 DEG C, spinning program is write according to following parameter, carries out conventional spinning:
The double rotary wheel multi-pass mirror image conventional spinning for carrying out 3 passages first carries out preforming spinning, is in the spinning process
It is not bonded mold spinning；
Then the formed spinning Jing Guo 4 passage back cover sections is carried out in the spinning process using progressive thickness spin-on process
Spinning；
The molding of straight-through cylinder section is carried out using the double rotary wheel multi-pass mirror image conventional spinning of 8 passages；
To which the seamless tubular goods being made of back cover and direct tube section open at one end be made, the back cover diameter of seamless tubular goods is Φ
The uniform gradual change of 12mm of 420mm, center of the thickness of back cover from from the 8mm at edge to back cover thicken, and the length of direct tube section is
1300mm, direct tube section with a thickness of 8mm.
S2, the preparation of aluminium alloy inner container spinning pipe, specifically comprises the following steps:
S21, using the core model of processing length 3000mm, to seamless tubular goods made from step S1 carry out 2 passage three-wheel mistakes away from
Dextrorotation spinning, mistake are set as 6mm away from amount；
Obtain spinning part A；The size of spinning part A are as follows: the length of direct tube section be 2600mm, direct tube section with a thickness of 4mm.
S22, the Processing to length of aluminium alloy inner container spinning pipe determine spinning part A obtained in step S21 using sawing machine
Long processing, to obtain aluminium alloy inner container spinning pipe, the length of the aluminium alloy inner container spinning pipe is 2500mm；
S23, the cleaning of aluminium alloy inner container spinning pipe are added in 40 DEG C using rotary spray cleaning machine or supersonic cleaning machine
Property cleaning agent cleans aluminium alloy inner container spinning pipe obtained in step S22；Apparatus is dried using dedicated after the completion of cleaning
Or drying unit removal remained on surface is water stain；
S24, reconditioning aluminium alloy inner container spinning pipe close the aluminium after cleaning in step S23 using numerical control internal-external cavetto grinding machine
The reconditioning that golden liner spinning pipe carries out surfaces externally and internally scuffing, damages；The step specifically comprises the following steps:
S241 carries out reconditioning using outer surface of the cloth abrasive band to aluminium alloy inner container spinning pipe；
S242 carries out thick reconditioning using inner surface of the Chiba fabric disc to aluminium alloy inner container spinning pipe；
S243 carries out refine mill using inner surface of the scouring pad wheel to aluminium alloy inner container spinning pipe.
S3, aluminium alloy inner container spinning pipe flaw detection, to the back cover and straight tube of aluminium alloy inner container spinning pipe obtained in step S2
Duan Jinhang ultrasonic inspection, check inner surface stomata, be mingled with, be recessed, micro-crack the defects of.
The rotary press modelling of S4, end socket and bottleneck, using heating closing in spinning machine to the opening of aluminium alloy inner container spinning pipe
The rotary press modelling for carrying out end socket and bottleneck, obtains rotary press modelling part B；The step specifically comprises the following steps:
S41 carries out the clamping of aluminium alloy inner container spinning pipe using split-type hollow main shaft；
S42, using oxygen, propane/LNG burning to progress bright eruption heating at the spinning to be closed up of aluminium alloy inner container spinning pipe
To 360 DEG C；
S43, using unilateral X straight line, Z straight line and rotation three-dimensional insertion packing closing in spinning machine to aluminium alloy inner container spinning pipe into
Row closing in spinning, so that rotary press modelling part B be made；
In spinning process, 4 derotations are had, for thickening for bottleneck position；The end socket of rotary press modelling part B obtained
Thickness is thickened from the 12mm at edge to the uniform gradual change of the 8mm at bottleneck position.
S5, the processing of bottleneck centre bore carry out the clamping of rotary press modelling part B using the hollow clamping tooling of split-type；Using
Dedicated bottleneck machining center carries out the machining of bottleneck centre bore to rotary press modelling part B obtained in step S4, is spun into
Type part C；It is ready for subsequent T6 processing；
S6, curved surface flaw detection, using Special curved surface ultrasound automatic flaw detector to rotary press modelling part C obtained in step S5 into
The flaw detection of row closing in quality, examines whether end socket position has the manufacturing deficiencies such as orange peel, folding；
S61, using the hollow clamping frock clamping rotary press modelling part C of split-type；
S62, using Special curved surface ultrasound automatic flaw detector to rotary press modelling part C obtained in step S5 carry out end socket and
The full-automatic flaw detection of bottleneck closing in quality, examines whether end socket position has the manufacturing deficiencies such as orange peel, folding.
S7, curved interior surface reconditioning, according to result of detection, using dedicated end socket inner surface grinding machine tool to being sent out in step S6
Existing end socket defect in inner surface carries out reconditioning, obtains up-to-standard rotary press modelling part C；The step specifically comprises the following steps:
S71, using the hollow clamping frock clamping rotary press modelling part C of split-type；
S72, the automatic endoscope system automatic Observation carried using dedicated end socket inner surface grinding machine tool judge table in end socket
Planar defect situation records corresponding position, and combines artificial confirmation；
S73, using the numerical control automatic grinding mechanism of dedicated end socket inner surface grinding machine tool to the end socket found in step S5
Defect in inner surface carries out reconditioning, obtains up-to-standard rotary press modelling part C, during reconditioning, numerical control automatic grinding mechanism can
Programming independently executes.
S8, heat treatment carry out T6 process to rotary press modelling part C obtained in step S7, obtain high pressure gas cylinder aluminium
Alloy liner base；The step specifically comprises the following steps:
Rotary press modelling part C obtained in step S7 is put into vertical aluminum alloy sealed box type quenching furnace and carried out by S81, quenching treatment
Quenching treatment, is heated to 525-531 DEG C for rotary press modelling part C, and keep the temperature 3.3 hours in 525-531 DEG C of environment, then will rotation
Molded part C carries out aqueous medium quenching；
Quenched rotary press modelling part C is transferred to car-type aluminium alloy aging furnace and carried out at timeliness by S82, ageing treatment
Reason, finally keeps the temperature 9 hours in 160 DEG C of environment, and high pressure gas cylinder aluminium alloy inner container base is made.In entire quenching treatment and timeliness
In treatment process, high pressure gas cylinder aluminium alloy inner container base is fixed on dedicated heat treatment material frame using dedicated heat treatment tooling is vertical
In, during processing, back cover one section upwards place.
S9, bottleneck processing, using dedicated bottleneck machining center to high pressure gas cylinder aluminium alloy inner container obtained in step S8
Internal diameter of the bottleneck, the outer diameter of base are machined out, and process bottle outlet internal and external screw thread, obtain high pressure gas cylinder aluminium alloy inner container；It should
Step specifically comprises the following steps:
S91, using the hollow clamping frock clamping high pressure gas cylinder aluminium alloy inner container base of split-type；
S92, bottleneck processing, using dedicated bottleneck machining center to high pressure gas cylinder aluminium alloy inner container obtained in step S8
Base carries out bottleneck outer diameter, internal diameter, internal screw thread, external screw thread and carries out High-speed machining, obtains high pressure gas cylinder aluminium alloy inner container, bottleneck
Length is 40mm, the outer diameter of bottleneck is 50mm, and the internal diameter of bottleneck is 28mm.
S10, liner cleaning, closes high pressure gas cylinder obtained in step S9 with aluminium using special vertical cylinder liner cleaning machine
The inner cavity of golden liner carries out high pressure water spray cleaning, removes aluminium skimmings and other processing pollution objects；The step specifically includes following step
It is rapid:
S101 is placed on high pressure gas cylinder aluminium alloy inner container is vertical on special vertical cylinder liner cleaning machine, bottleneck to
Under, enter special vertical cylinder liner cleaning machine spraying mechanism inside liner, fixed liner；
S102, is sprayed using high pressure water or ultrasonic cleaning mode carries out clearly the inner cavity of high pressure gas cylinder aluminium alloy inner container
It washes, removes aluminium skimmings and other processing pollution objects.
S11, product inspection test to the high pressure gas cylinder obtained in step S10 with aluminium alloy inner container, some projects into
Row sampling observation, measures the tissue grain size of any six positions of the high pressure gas cylinder aluminium alloy inner container of sampling observation, measurement knot
The tissue grain size of fruit six positions is respectively 6 grades according to ASTME112 standard, 6 grades, 7 grades, 7 grades, 6 grades, 7 grades, to sampling observation
High pressure gas cylinder aluminium alloy inner container direct tube section tensile strength.Yield strength and elongation percentage measure respectively, through measuring,
The tensile strength of direct tube section is 345MPa, yield strength 310MPa, elongation percentage 15%, and it is qualified that this batch produces product, is obtained
To the finished product of high pressure gas cylinder aluminium alloy inner container.
S12 carries out carbon fiber winding to the finished product of the obtained high pressure gas cylinder aluminium alloy inner container of step S11, obtains one end
The high pressure gas cylinder of back cover detects the ultimate pressure capacity situation of the high pressure gas cylinder.
By examining, the tissue grain size of any position of high pressure gas cylinder aluminium alloy inner container made from the present embodiment according to
ASTME112 standard class is all larger than equal to 5 grades, and the tensile strength of direct tube section is 345MPa, yield strength 310MPa, extends
Rate is 15%；Carrying out the high pressure gas cylinder test limits pressure obtained after liner winding is 75Mpa, meets rated pressure 25Mpa's
It is required that.
Embodiment 2
A kind of diameter 620mm, length 4.5m are prepared, wall thickness is the high pressure gas cylinder aluminium alloy inner container of one end back cover of 5mm,
Its high pressure gas cylinder rated pressure requires to be 25Mpa, specifically includes following operating procedure:
S1, back cover rotary press modelling
It selects with a thickness of 22mm, diameter is the slab of Φ 1200mm as spinning blank, first adds the slab to spinning
Heat writes spinning program to 320 DEG C, according to following parameter, carries out conventional spinning:
The double rotary wheel multi-pass mirror image conventional spinning for carrying out 3 passages first carries out preforming spinning, is in the spinning process
It is not bonded mold spinning；
Then the formed spinning Jing Guo 3 passage back cover sections is carried out in the spinning process using progressive thickness spin-on process
Spinning；
The molding of straight-through cylinder section is carried out using the double rotary wheel multi-pass mirror image conventional spinning of 6 passages；
To which the seamless tubular goods being made of back cover and direct tube section open at one end be made, the back cover diameter of seamless tubular goods is Φ
The uniform gradual change of 15mm of 620mm, center of the thickness of back cover from from the 8mm at edge to back cover thicken, and the length of direct tube section is
2000mm, direct tube section with a thickness of 12mm.
S2, the preparation of aluminium alloy inner container spinning pipe, specifically comprises the following steps:
S21 uses processing length for the core model of 5500mm, to seamless tubular goods made from step S1 carry out passage three-wheel mistake away from
Dextrorotation spinning, mistake are set as 6mm away from amount；
Obtain spinning part A；The size of spinning part A are as follows: the length of direct tube section be 4600mm, direct tube section with a thickness of 5mm.
S22, the Processing to length of aluminium alloy inner container spinning pipe determine spinning part A obtained in step S21 using sawing machine
Long processing, to obtain aluminium alloy inner container spinning pipe, which is 4500mm；
S23, the cleaning of aluminium alloy inner container spinning pipe, using rotary spray cleaning machine or the neutral cleaning of supersonic cleaning machine addition
Aluminium alloy inner container spinning pipe obtained in step S22 is cleaned in agent；Apparatus or drying are dried using dedicated after the completion of cleaning
It is water stain that device removes remained on surface；
S24, reconditioning aluminium alloy inner container spinning pipe close the aluminium after cleaning in step S23 using numerical control internal-external cavetto grinding machine
The reconditioning that golden liner spinning pipe carries out surfaces externally and internally scuffing, damages；The step specifically comprises the following steps:
S241 carries out reconditioning using outer surface of the cloth abrasive band to aluminium alloy inner container spinning pipe；
S242 carries out thick reconditioning using inner surface of the Chiba fabric disc to aluminium alloy inner container spinning pipe；
S243 carries out refine mill using inner surface of the scouring pad wheel to aluminium alloy inner container spinning pipe.
S3, aluminium alloy inner container spinning pipe flaw detection, to the back cover and straight tube of aluminium alloy inner container spinning pipe obtained in step S2
Duan Jinhang ultrasonic inspection, check inner surface stomata, be mingled with, be recessed, micro-crack the defects of.
The rotary press modelling of S4, end socket and bottleneck, using heating closing in spinning machine to the opening of aluminium alloy inner container spinning pipe
The rotary press modelling for carrying out end socket and bottleneck, obtains rotary press modelling part B；The step specifically comprises the following steps:
S41 carries out the clamping of aluminium alloy inner container spinning pipe using split-type hollow main shaft；
S42, using oxygen, propane/LNG burning to progress bright eruption heating at the spinning to be closed up of aluminium alloy inner container spinning pipe
To 300 DEG C；
S43, using unilateral X straight line, Z straight line and rotation three-dimensional insertion packing closing in spinning machine to aluminium alloy inner container spinning pipe into
Row closing in spinning, so that rotary press modelling part B be made；
In spinning process, closing in spinning has 4 derotations, for thickening for bottleneck position；Rotary press modelling part B obtained
The thickness of end socket thickened from the 8mm at edge to the uniform gradual change of the 15mm at bottleneck position.
S5, the processing of bottleneck centre bore carry out the clamping of rotary press modelling part B using the hollow clamping tooling of split-type；Using
Dedicated bottleneck machining center carries out the machining of bottleneck centre bore to rotary press modelling part B obtained in step S4, is spun into
Type part C；It is ready for subsequent T6 processing；
S6, curved surface flaw detection, using Special curved surface ultrasound automatic flaw detector to rotary press modelling part C obtained in step S5 into
The flaw detection of row closing in quality, examines whether end socket position has the manufacturing deficiencies such as orange peel, folding；
S61, using the hollow clamping frock clamping rotary press modelling part C of split-type；
S62, using Special curved surface ultrasound automatic flaw detector to rotary press modelling part C obtained in step S5 carry out end socket and
The full-automatic flaw detection of bottleneck closing in quality, examines whether end socket position has the manufacturing deficiencies such as orange peel, folding.
S7, curved interior surface reconditioning, according to result of detection, using dedicated end socket inner surface grinding machine tool to being sent out in step S6
Existing end socket defect in inner surface carries out reconditioning, obtains up-to-standard rotary press modelling part C；The step specifically comprises the following steps:
S71, using the hollow clamping frock clamping rotary press modelling part C of split-type；
S72, the automatic endoscope system automatic Observation carried using dedicated end socket inner surface grinding machine tool judge table in end socket
Planar defect situation records corresponding position, and combines artificial confirmation；
S73, using the numerical control automatic grinding mechanism of dedicated end socket inner surface grinding machine tool to the end socket found in step S6
Defect in inner surface carries out reconditioning, obtains up-to-standard rotary press modelling part C, during reconditioning, numerical control automatic grinding mechanism can
Programming independently executes.
S8, heat treatment carry out T6 process to rotary press modelling part C obtained in step S7, obtain high pressure gas cylinder aluminium
Alloy liner base；The step specifically comprises the following steps:
Rotary press modelling part C obtained in step S7 is put into vertical aluminum alloy sealed box type quenching furnace and carried out by S81, quenching treatment
Quenching treatment, is heated to 529 DEG C for rotary press modelling part C, and keep the temperature 3.5 hours in 529 DEG C of environment, then by rotary press modelling part
C carries out aqueous medium quenching；
Quenched rotary press modelling part C is transferred to car-type aluminium alloy aging furnace and carried out at timeliness by S82, ageing treatment
Reason, finally keeps the temperature 10 hours in 165 DEG C of environment, and high pressure gas cylinder aluminium alloy inner container base is made.Entire quenching treatment and when
It imitates in treatment process, high pressure gas cylinder aluminium alloy inner container base is fixed on dedicated heat treatment material using dedicated heat treatment tooling is vertical
In frame, during processing, back cover one section upwards place.
S9, bottleneck processing, using dedicated bottleneck machining center to high pressure gas cylinder aluminium alloy inner container obtained in step S8
Internal diameter of the bottleneck, the outer diameter of base are machined out, and process bottle outlet internal and external screw thread, obtain high pressure gas cylinder aluminium alloy inner container；It should
Step specifically comprises the following steps:
S91, using the hollow clamping frock clamping high pressure gas cylinder aluminium alloy inner container base of split-type；
S92, bottleneck processing, using dedicated bottleneck machining center to high pressure gas cylinder aluminium alloy inner container obtained in step S8
Base carries out bottleneck outer diameter, internal diameter, internal screw thread, external screw thread and carries out High-speed machining, obtains high pressure gas cylinder aluminium alloy inner container, bottleneck
Length is 40mm, the outer diameter of bottleneck is 50mm, and the internal diameter of bottleneck is 28mm.
S10, liner cleaning, closes high pressure gas cylinder obtained in step S9 with aluminium using special vertical cylinder liner cleaning machine
The inner cavity of golden liner carries out high pressure water spray cleaning, removes aluminium skimmings and other processing pollution objects；The step specifically includes following step
It is rapid:
S101 is placed on high pressure gas cylinder aluminium alloy inner container is vertical on special vertical cylinder liner cleaning machine, bottleneck to
Under, enter special vertical cylinder liner cleaning machine spraying mechanism inside liner, fixed liner；
S102, is sprayed using high pressure water or ultrasonic cleaning mode carries out clearly the inner cavity of high pressure gas cylinder aluminium alloy inner container
It washes, removes aluminium skimmings and other processing pollution objects.
S11, product inspection test to the high pressure gas cylinder obtained in step S10 with aluminium alloy inner container, some projects into
Row sampling observation, measures the tissue grain size of any six positions of the high pressure gas cylinder aluminium alloy inner container of sampling observation, measurement knot
The tissue grain size of fruit six positions is respectively 7 grades according to ASTME112 standard, 7 grades, 6 grades, 5 grades, 6 grades, 6 grades, to sampling observation
High pressure gas cylinder aluminium alloy inner container direct tube section tensile strength.Yield strength and elongation percentage measure respectively, through measuring,
The tensile strength of direct tube section is 352MPa, yield strength 316MPa, elongation percentage 16%, and it is qualified that this batch produces product, is obtained
To the finished product of high pressure gas cylinder aluminium alloy inner container.
S12 carries out carbon fiber winding to the finished product of the obtained high pressure gas cylinder aluminium alloy inner container of step S11, obtains one end
The high pressure gas cylinder of back cover detects the ultimate pressure capacity situation of the high pressure gas cylinder.
By examining, the tissue grain size of any position of high pressure gas cylinder aluminium alloy inner container made from the present embodiment according to
ASTME112 standard class is all larger than equal to 5 grades, and the tensile strength of direct tube section is 352MPa, yield strength 316MPa, extends
Rate is 16%；Being wound rear test limits pressure is 78Mpa, meets the requirement of rated pressure 25Mpa.
In conclusion the manufacturing method of the high pressure gas cylinder aluminium alloy inner container of one end back cover provided by the invention, is totally adopted
With the processing method of spinning, low energy consumption, and pollution is small, and the loss of entire manufacturing process chinese raw materials is fewer, has saved raw material
Cost.The high pressure gas cylinder aluminium alloy inner container for one end back cover that the manufacturing method of the present invention processes, nominal outside diameter Φ
406- Φ 850mm, volume are much higher than the volume of existing standard aluminium alloy inner container；The wall thickness of direct tube section is 1-10mm, has wall
The characteristics of thickness, light weight；The tensile strength of direct tube section is more than or equal to 345MPa, yield strength is more than or equal to 310MPa, extends
Rate is more than or equal to 15%；Direct tube section any position organizes grain size to be more than or equal to 5 grades according to ASTME112 standard, interior material group
Even compact is knitted, integral strength excellent effect has high pressure resistant property, has great importance to the manufacture of high pressure gas cylinder.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Mind and principle within, any modification, equivalent replacement, improvement and so on, accompanying claims protection scope of the present invention it
It is interior.
Claims (10)
1. a kind of high pressure gas cylinder aluminium alloy inner container of one end back cover, which is characterized in that the high pressure gas cylinder aluminium alloy inner container
For the integrated seamless structure of one end back cover, other end closing in formed head and bottleneck, including back cover, direct tube section, end socket and bottle
Mouth, the back cover and end socket are located at the both ends of the direct tube section, and the bottleneck is located on the end socket；The high pressure gas cylinder
It is less than 5m with the length of aluminium alloy inner container, the nominal outside diameter of the direct tube section is Ф 406- Ф 850mm, the volume of the high pressure gas cylinder
Constant-pressure is 20-30Mpa.
2. high pressure gas cylinder aluminium alloy inner container as described in claim 1, which is characterized in that the wall thickness of the direct tube section is 1-
The whole straightness of 10mm, the direct tube section are not more than 0.5mm/m；
Preferably, the tolerance of the wall thickness of the direct tube section is less than or equal to ± 0.15mm；
More preferably, the direct tube section arbitrary line fragment position part straightness is not more than 0.5mm/300mm；
More preferably, the circularity of the direct tube section any position is not more than 0.5mm；
More preferably, the inside surface roughness of the direct tube section is less than Ra1.6 μm, and the outer surface roughness of the direct tube section is less than
Ra3.2μm。
3. high pressure gas cylinder aluminium alloy inner container as described in claim 1, which is characterized in that the structure type of the end socket is ellipse
Spherical shell cover, disk bottom or dome-type end socket, the structure type of the back cover is identical as the structure type of the end socket, described
The thickness of end socket is thickened from edge to the uniform gradual change in bottleneck position, and center of the thickness of the back cover from edge to back cover is uniformly gradually
Change thickens；
Preferably, the thickness of the end socket is thickened from the 5-8mm at edge to the uniform gradual change of the 10-15mm at bottleneck position；
More preferably, the uniform gradual change of 15-20mm at center of the thickness of the back cover from the 5-8mm at edge to back cover thickens；
More preferably, the length of the bottleneck is 40mm, the outer diameter of the bottleneck is 50mm, and the internal diameter of the bottleneck is 28mm.
4. a kind of manufacturing method of the high pressure gas cylinder aluminium alloy inner container of one end back cover as described in any one of claims 1 to 3,
It is characterized in that, the manufacturing method includes the following steps:
S1, back cover rotary press modelling, using conventional spinning equipment to round or rectangular slab carry out multi-pass heating conventional spinning or
The seamless tubular goods being made of back cover and direct tube section open at one end is made in draw spinning；
S2, aluminium alloy inner container spinning control is standby, carries out the outward turning of multi-pass strength to the direct tube section of seamless tubular goods made from step S1
Pressing formation processing, obtains aluminium alloy inner container spinning pipe；
S3, the flaw detection of aluminium alloy inner container spinning pipe, to the back cover of aluminium alloy inner container spinning pipe obtained in step S2 and direct tube section into
Row ultrasonic inspection checks inner surface stomata, is mingled with, is recessed and micro-crack defect；
The rotary press modelling of S4, end socket and bottleneck, using heating closing in spinning machine to the opening of the aluminium alloy inner container spinning pipe
The rotary press modelling for carrying out end socket and bottleneck, obtains rotary press modelling part B；
S5, the processing of bottleneck centre bore carry out the machining of bottleneck centre bore to rotary press modelling part B obtained in step S4, obtain
To rotary press modelling part C；
S6, curved surface flaw detection carry out closing in quality flaw detection to rotary press modelling part C obtained in step S5, whether examine end socket position
There is the manufacturing deficiency of orange peel, folding；
S7, curved interior surface reconditioning, according to result of detection, using end socket inner surface grinding machine tool to the end socket found in step S6
Defect in inner surface carries out reconditioning, obtains up-to-standard rotary press modelling part C；
S8, heat treatment carry out T6 process to rotary press modelling part C obtained in step S7, obtain high pressure gas cylinder aluminium alloy
Liner base；
S9, bottleneck processing, using dedicated bottleneck machining center to the aluminium alloy inner container base of high pressure gas cylinder obtained in step S8
Internal diameter of the bottleneck, outer diameter are machined out, and process bottle outlet internal and external screw thread, obtain high pressure gas cylinder aluminium alloy inner container；
S10, liner cleaning.
5. the manufacturing method of high pressure gas cylinder aluminium alloy inner container as claimed in claim 4, which is characterized in that the step S1
In, the conventional spinning equipment is the common spinning machine of single-wheel numerical control or the common spinning machine of double rotary wheel numerical control with image feature；
Spin-on process is single spinning roller multi-pass conventional spinning or double rotary wheel multi-pass mirror image conventional spinning；When spinning using end shape with
The identical mold of the back cover inner surface configuration of the high pressure gas cylinder aluminium alloy inner container of one end back cover carries out secondary process, mold
Length is 1.2-1.5 times of seamless tubular goods length；
Preferably, the tail end of the mold has device for discharging, can automatic discharging；
More preferably, the conventional spinning equipment is the common spinning machine of double rotary wheel numerical control with image feature.
6. the manufacturing method of high pressure gas cylinder aluminium alloy inner container as claimed in claim 5, which is characterized in that the step S1 tool
Body includes the following steps:
Slab is waited for that spinning position is heated to 200-400 DEG C by S1a, heating of plate blank；
S1b, back cover is preforming, using the double rotary wheel multi-pass mirror image conventional spinning of 1-3 passage to the slab heated in step S1a
The preforming processing of back cover is carried out, mold is preforming, and during spinning, continuous heating makes not to be bonded for the spinning process
Spinning part is kept for 200-400 DEG C；
S1c, back cover molding carry out the double of 3-5 passage to preformed member obtained in step S1b using progressive thickness spin-on process
Spinning roller multi-pass mirror image composite spinning, obtains back cover molded part, and during spinning, continuous heating keeps spinning part
200-400℃；
S1d, direct tube section it is preforming, using 6-10 passage double rotary wheel multi-pass mirror image composite spinning in step S1c be made
Back cover molded part to spinning position carry out direct tube section it is preforming, thus be made by back cover and direct tube section structure open at one end
At seamless tubular goods, during spinning, continuous heating, make spinning part keep 200-400 DEG C；
Preferably, in step S1c and step S1d, derotation technique is interted while double rotary wheel multi-pass mirror image conventional spinning,
For thickening for direct tube section blank to be processed；
More preferably, the heating in the step S1a-S1d carries out burning bright eruption heating using oxygen, propane/LNG.
7. the manufacturing method of high pressure gas cylinder aluminium alloy inner container as claimed in claim 4, which is characterized in that the step S2 tool
Body includes the following steps:
S21, the rotary press modelling of aluminium alloy inner container spinning pipe direct tube section are made step S1 away from dextrorotation spin-on process using three-wheel mistake
Seamless tubular goods direct tube section carry out 2-4 spinning process, obtain spinning part A；It is equal to setting using processing length when spinning to produce
The core model of 1.2-1.4 times of product length carries out spinning secondary process；
S22, the Processing to length of aluminium alloy inner container spinning pipe carry out fixed length to spinning part A obtained in step S21 using sawing machine and add
Work obtains aluminium alloy inner container spinning pipe；
S23, the cleaning of aluminium alloy inner container spinning pipe, using cleaning machine to aluminium alloy inner container spinning pipe obtained in step S22 into
Row cleaning；
S24, reconditioning aluminium alloy inner container spinning pipe, using numerical control internal-external cavetto grinding machine in the aluminium alloy after being cleaned in step S23
The reconditioning that gallbladder spinning pipe carries out surfaces externally and internally scuffing, damages；
Preferably, the three-wheel mistake in the step S21 is set as 6-12mm away from amount away from the mistake in dextrorotation spin-on process；
Preferably, the cleaning machine in the step S23 is rotary spray cleaning machine or supersonic cleaning machine；
Preferably, the cleaning of the aluminium alloy inner container spinning pipe of one end back cover is completed using 30-45 DEG C of neutral cleaners are heated；
More preferably, it is used after the aluminium alloy inner container spinning pipe cleaning of one end back cover and dries apparatus or drying unit removal table
Face residual is water stain.
8. the manufacturing method of high pressure gas cylinder aluminium alloy inner container as claimed in claim 4, which is characterized in that the step S4 tool
Body includes the following steps:
S41, clamping carry out the clamping of aluminium alloy inner container spinning pipe using split-type hollow main shaft；
S42, heating, to being heated to 200-400 DEG C at the spinning to be closed up of aluminium alloy inner container spinning pipe；
The formed spinning of S43, end socket and bottleneck, using unilateral X straight line, Z straight line and rotation three-dimensional insertion packing closing in spinning machine pair
The aluminium alloy inner container spinning pipe heated in step S42 carries out multi-pass closing in spinning, obtains rotary press modelling part B；
Preferably, the heating in the step S42 carries out burning bright eruption heating using oxygen, propane/LNG.
9. high pressure gas cylinder as claimed in claim 4 aluminium alloy inner container manufacturing method, which is characterized in that the step S7 is specific
Include the following steps:
S71, using clamping tooling clamping rotary press modelling part C；
S72, the automatic endoscope system automatic Observation carried using end socket inner surface grinding machine tool judge end socket defect in inner surface feelings
Condition records corresponding position, and combines artificial confirmation；
S73, using the end socket inner mold face slot trimming mechanism of end socket inner surface grinding machine tool to the end socket inner surface found in step S5
Defect carries out reconditioning, obtains up-to-standard rotary press modelling part C；
Preferably, the clamping tooling of the rotary press modelling part C is the hollow clamping tooling of split-type；
Preferably, end socket inner mold face reconditioning is numerical control automatic grinding mechanism, programmable to independently execute.
10. the manufacturing method of high pressure gas cylinder aluminium alloy inner container as claimed in claim 4, which is characterized in that the step S8
Include the following steps:
S81, quenching treatment, is put into glowing furnace for rotary press modelling part C obtained in step S6 and is quenched, by rotary press modelling
Part C is heated to 525-531 DEG C, and keeps the temperature 2-4 hours in 525-531 DEG C of environment, then quenches rotary press modelling part C；
Quenched rotary press modelling part C is transferred to aging furnace and carries out ageing treatment, finally in 160-200 by S82, ageing treatment
6-10 hours are kept the temperature in DEG C environment, high pressure gas cylinder aluminium alloy inner container base is made；
Preferably, the glowing furnace is vertical aluminum alloy sealed box type quenching furnace；
More preferably, the aging furnace is car-type aluminium alloy aging furnace.
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