CN105039880B - Little ozzle, major diameter, the cylindricality aluminium alloy inner container heat treatment method of big L/D ratio - Google Patents
Little ozzle, major diameter, the cylindricality aluminium alloy inner container heat treatment method of big L/D ratio Download PDFInfo
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- CN105039880B CN105039880B CN201510494770.0A CN201510494770A CN105039880B CN 105039880 B CN105039880 B CN 105039880B CN 201510494770 A CN201510494770 A CN 201510494770A CN 105039880 B CN105039880 B CN 105039880B
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Abstract
The present invention relates to the cylindricality aluminium alloy inner container heat treatment method of little ozzle, major diameter, big L/D ratio, for the design feature that aluminium alloy inner container length is larger, over entry attitude is adopted in Quenching Treatment, and devise spray system and combined the type of cooling with tank, improve water intake end cooling velocity after bottle, it is ensured that the uniformity of bottle overall mechanical properties and meet design requirement；Additionally, being also directed to the design feature of aluminium alloy inner container " the big mouth of tripe is little ", devise rear water intake end ozzle water injecting pipeline and increase appropriate counterweight, improve the exclusion speed of air and guarantee quenching water-inlet process in big volume, the hollow bottle of little ozzle smooth；Finally, after bottle, water intake end end socket and bottle straightway intersection have also been devised inverted-cone shape baffle plate, interior in short-term avoid shower water from contact with bottle straightway, reduction causes bottle straightway mechanical heterogeneity and risk of distortion due to shower water splashing.
Description
Technical field
The invention belongs to Composite Material in Space gas cylinder manufacturing technology field, and in particular to a kind of composites gas cylinder is with little
Ozzle, major diameter, the cylindricality aluminium alloy inner container heat treatment method of big L/D ratio.
Background technology
6061 aluminium alloys are heat treatment reinforcement alloy, including solid solution and aging strengthening model process, solid solution and aging strengthening model
System：120min, water quenching are incubated at 535 ± 5 DEG C, and quenching shift time is less than 60s, then 10h is incubated at 165 ± 5 DEG C, empty
Cold, the quenching process of wherein solution treatment is the key link of aluminium alloy bottle mechanical property control.In general, tank, gas
The solution heat treatment of bottle type III pressure vessel is widely used in using tank direct-water-quenching or spray two ways, wherein tank quenching
The hemispherical of reduced size or cylindrical component, and spray and be applied to large-size structure, such as Japan H-2 rocket diameter 5m magnitudes are store
The quenching of case end socket housing (Li Baorong etc., H-2B carrier rocket tank manufacturing technology and application, Aerospace manufacturing technology, 2008 (5):
35-37).At present, domestic for ozzle small in ends (external diameter 60～80mm of φ, endoporus 20～40mm of φ), major diameter (φ 300～
400mm), big L/D ratio (＞ 2), hollow, cylindricality, the solution heat treatment of no-welding-seam seamless cylinder typically simply adopt direct water
Groove quenching (Chinese patent, CN201010295347.5；The experimental study of LD31 alloy high-pressure tanks spinning forming process, the 8th
National rotary pressure technology exchanging meeting, 1999), whole bottle over entry during quenching, but as bottle volume is big, length big, bottle is quenched
When fiery there is notable difference in upper/lower terminal cooling velocity；Further, since bottle two ends ozzle is less, the air in bottle is discharged
Process is slower, buoyancy effect bottle digging water speed, causes the cooling velocity of rear water intake end bottle low；In addition, hollow bottle quenching
When digging water speed difference also affect cooling effect, too fast, in bottle, air is difficult to discharge, and is formed in bottle a certain degree of
" hollow " state, is easily caused that bottle floats, bottle internal cooling speed reduces or uneven etc., and water intake end after excessively slow then bottle
Cooling velocity is not enough.In general, the mechanical property of rear oral siphon mouth, end socket and neighbouring straightway position is low, is easily caused multiple
There is leakage in hydraulic pressure self-tightening, fatigue or explosion bulge test at ozzle R angles and design requirement can not be met in condensation material bottle.Cause
This, water intake end ozzle after improving " the big mouth of tripe is little " bottle in quenching process, end socket and near straightway cooling velocity, make
It is most important that the mechanical property of 6061 aluminium alloys meets design requirement.
Content of the invention
It is an object of the invention to overcoming the problems referred to above of prior art, there is provided little ozzle, major diameter, the post of big L/D ratio
Shape aluminium alloy inner container heat treatment method, the heat treatment mode combined using spray and water quenching so that aluminium alloy inner container two ends ozzle,
The mechanical property of end socket and straightway can meet design requirement.
The above-mentioned purpose of the present invention is mainly achieved by following technical solution：Little ozzle, major diameter, big major diameter
The cylindricality aluminium alloy inner container heat treatment method of ratio, step are as follows：
Step (one), the cylindricality aluminium alloy inner container that two ends are had little ozzle are vertically fixedly mounted on heat treatment tooling, institute
Stating heat treatment tooling includes end breaket, balancing weight and frame baffle under cylindricality outside framework, inner bag upper end fixing device, inner bag；Its
In, end breaket under inner bag is fixed in cylindricality outside framework near lower end position, and below end breaket, base of frame is placed under inner bag
Balancing weight, aluminium alloy inner container are vertically disposed under inner bag on end breaket, and aluminium alloy inner container direct tube section upper end is vertical by fixing device
The outer material frame of cylindricality is fixed near upper end position, frame baffle is wrapped circumferentially around along cylindrical frame, and is fixed on cylindricality outside framework top
Portion；
Step (two), the aluminium alloy inner container being vertically mounted on heat treatment tooling is put in heat-treatment furnace carries out at solid solution
Reason, after being disposed, heat treatment tooling and cylindricality aluminium alloy inner container is hung out and is transferred to above Quenching Treatment tank, is being turned
During shifting, spray equipment is moved to cylindricality outside framework upper end fixed position, contacted with water when heat treatment tooling drops to inner bag
When, the spray equipment above opening sink water, and rapid by heat treatment tooling and inner bag submerged；
After step (three), quenching are finished, heat treatment tooling and aluminium alloy inner container are together put into when carrying out in heat-treatment furnace
Effect process, after being disposed, aluminium alloy inner container is dismantled from heat treatment tooling.
The cylindricality outside framework top center of the heat treatment tooling arranges positioning annulus, and annulus is highly less than aluminium alloy
Inner bag ozzle height, diameter are mated with inner bag upper end nozzle diameter.
The inner bag upper end fixing device of the heat treatment tooling includes the thin bed course of inverted-cone shape baffle plate, fix bar, fine aluminium；Its
In, inverted-cone shape baffle plate lower edge is the high cylindrical extensions of 10～15mm, along inner bag straightway direction fit, and its girth with
Inner bag straightway upper limb matches, and is fixed on inner bag straightway upper limb by clip, lays on the inside of inverted-cone shape baffle plate extension
The thin bed course of fine aluminium, is symmetrically welded two fix bars on the outside of inverted-cone shape baffle plate, fix bar free end is fixed on cylindricality outside framework side
On edge, inverted-cone shape baffle plate upper limb circumference is less than framework inner circle, and is less than framework upper surface.
Under the inner bag of the heat treatment tooling, end breaket includes a positioning annulus and two fix bars；Positioning annulus conduct
The center of end breaket under inner bag, positioning circle diameter is less than cylindricality inner bag diameter, more than inner bag nozzle diameter, on the outside of the outer toroid of top
It is welded in frame edge with fix bar.
The spray equipment includes the chilling spray pipeline and upper end ozzle endoporus water injection pipe of inner bag upper end ozzle and end socket
Road；Wherein, inner bag upper end ozzle is connected with water pump with chilling spray pipeline one end of end socket, the other end is sprayed equipped with bent angle porous
Head, upper end ozzle endoporus water injecting pipeline one end are also connected with water pump, and the other end is equipped with right angle pipe shower nozzle, upper end ozzle endoporus note
Water lines pipe diameter positions circle diameter less than frame roof center.
The present invention is had the advantages that compared with prior art：
(1), the present invention is directed to big volume, the design feature of 6061 aluminium alloy inner container of long length, adopts along inner bag during water quenching
Length direction over entry, while for solving the problems, such as that water intake end i.e. upper end cooling velocity is not enough after large scale inner bag, in upper end
Increased spray system so that inner bag bottle upper/lower terminal ozzle is contacted with water simultaneously, improve the cooling speed of rear water intake end
Degree so that upper/lower terminal ozzle and neighbouring straightway mechanical property meet the design requirement of aluminum alloy materials, it is ensured that bottle entirety
The uniformity of mechanical property；
(2), the present invention is directed to big volume, the design feature of little ozzle aluminium alloy inner container " the big mouth of tripe is little ", for avoiding inner bag
The bottle inner air velocity of discharge is slow, and its buoyancy causes bottle digging water speed slow and rear water intake end cooling velocity that is bringing is slow asks
Topic, increased the water injecting pipeline for upper end ozzle endoporus in spray system, improves the exclusion speed of air in bottle, with
Shi Zengjia appropriateness counterweights, it is ensured that quenching water-inlet process improves digging water speed while smooth, is further ensured that inner bag bottle
Quenching effect；
(3) present invention is alternatively directed to spray system brings current splashing and causes the uniform change of bottle straightway inhomogeneous cooling
Shape, in bottle upper end, end socket and bottle straightway intersection increased inverted-cone shape baffle plate, interior in short-term avoid shower water and bottle
Straightway is contacted, and is reduced as shower water splashes and is caused bottle straightway mechanical property to reduce and risk of distortion；
(4), the cylindricality aluminium alloy inner container heat treatment method process is simple of little ozzle of the invention, major diameter, big L/D ratio, easily
In realization, with stronger practicality.
Description of the drawings
Fig. 1 is heat treatment tooling of the present invention and spray system structural representation.
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings：
For reducing risk of distortion when long length cylindricality aluminium alloy inner container straightway quenches, the present invention is using along its length
The mode of over entry quenching, cylinder liner is placed in heat treatment tooling as shown in Figure 1.Work is heat-treated as shown in Figure 1
Dress includes end breaket 3, balancing weight 4 and frame baffle 5 under cylindricality outside framework 1, inner bag upper end fixing device 2, inner bag.Wherein, frame
Frame 1 is column construction, and upper and lower two circular end faces are welded with 4～6 vertical beams.1 bottom disc of framework welds many intersections
Beam, for placing removably balancing weight 4, it is to lower that hollow bottle buoyancy is larger and the floating that causes which acts on, and improves great Rong
The hollow bottle quenching water-inlet speed of product, and ensure that quenching water-inlet process is smooth.Inner bag is welded and fixed in framework 1 near lower end position
Lower end breaket 3, under inner bag, 3 center of end breaket is positioning annulus, and circle diameter is less than 6 diameter of cylindricality inner bag, more than inner bag ozzle
Diameter, aluminium alloy inner container 6 are vertically disposed on bracket 3.Removably inner bag upper end is also provided with framework 1 near upper end position
Fixing device 2,2 two ends iron wire of fixing device are fixed on the vertical beam at 1 edge of framework, and it is for vertical fixed interior which acts on
Courage 6 and prevent inner bag 6 run-off the straight or floating during water quenching.
For improving the cooling velocity of 6 upper end ozzle of inner bag and end socket, the present invention employs spray above in quenching process
The mode for combining that quenches with following tank carries out Quenching Treatment.After solution treatment is finished, with crane rapidly by heat treatment tooling
Hang out with cylindricality aluminium alloy inner container 6 and be transferred to above Quenching Treatment tank, in transfer process, rapid by spray dress manually
Put 7 to move to 1 upper end fixed position 8 of framework and fix, when heat treatment tooling drops to inner bag 6 to be contacted with water, on opening sink water
The spray equipment 7 of side, and rapid by 6 submerged of heat treatment tooling and inner bag.Wherein, spray equipment 7 includes inner bag upper pipes
The chilling spray pipeline 12 of mouth and end socket and upper end ozzle endoporus water injecting pipeline 13, arrange the cooling of inner bag upper end ozzle and end socket
The purpose of spray pipeline 12 is the cooling velocity for improving 6 upper end ozzle of inner bag and end socket, and upper end ozzle endoporus water injecting pipeline
13 purpose is to further speed up the air velocity of discharge in hollow inner bag 6, it is ensured that enter water smooth.As shown in figure 1, inner bag upper end
Ozzle has two with the chilling spray pipeline 12 of end socket, and one end is connected with water pump, the other end is equipped with bent angle porous nozzle, upper end
Ozzle endoporus water injecting pipeline 13 is one, and one end is also connected with water pump, and the other end is equipped with right angle pipe shower nozzle.In addition, spray
The fixed position 8 of system includes the chilling spray conduit positions and upper end ozzle endoporus water injecting pipeline of inner bag upper end ozzle and end socket
Position.As shown in figure 1, the chilling spray pipeline of inner bag upper end ozzle and end socket direct built in spray is being heat-treated framework 1
Nose-circle is faced on edges at two ends position, and upper end ozzle endoporus water injecting pipeline is placed on 1 top center of framework in spray, is
The center, 1 welded top crossbeam of cylindricality outside framework is fixed, center weld positions annulus, annulus height about 30mm, its internal diameter
Mate with inner bag upper end nozzle diameter with 13 diameter of upper end ozzle water injecting pipeline.
Additionally, bottle straightway mechanical heterogeneity and risk of distortion is caused for reducing as shower water splashes, this
Invention have also been devised back taper baffle plate in inner bag upper end fixing device 2, it is to avoid shower water and bottle straight line in quenching process
Section short contact.As shown in figure 1, inner bag upper end fixing device 2 includes inverted-cone shape baffle plate 9, the thin bed course of fix bar 10, fine aluminium
11.Wherein, 9 upper/lower terminal of inverted-cone shape baffle plate be circular open, taper be approximately more than 30 degree, upper limb circumference is slightly less than frame
1 inner circle of frame, and 1 upper surface of framework is less than, lower edge is placed in 6 straightway upper limb position of inner bag, and arranges the high cylinders of about 10mm
Extension, fits along 6 straightway direction of inner bag downwards, its girth is matched with 6 straightway upper limb of inner bag, can be by fastening manually
Clip is fixed on 6 straightway upper limb of inner bag；Additionally, laying the thin bed course 11 of the thick fine aluminiums of about 1mm, fine aluminium on the inside of baffle plate extension
Fusing point will not melt under solid solubility temperature and come off higher than 6061 aluminum alloy solution temperature, and when inner bag 6 and baffle plate 9 be heated swollen
Easily deformable after swollen, interior in short-term in spray can avoid spraying with the gap between sealing baffle 9 and inner bag 6 after clip fastening
Water drenching infiltration is contacted with bottle straightway.
Meanwhile, for avoiding the random splashing tank perimeter of water during spraying, on the outside of framework 1, also wrap up cylinder
Shape frame baffle 5, and be fixed at the top of framework 1, but the top and bottom of frame baffle 5 are not blocked, and are easy to water quenching process bottle
Body is fully contacted with water.Additionally, heat treatment tooling and spray system adopt material, except inverted-cone shape baffle plate 9, inner bag upper end ozzle
It is stainless steel material with the chilling spray pipeline 12 of end socket and upper end ozzle endoporus water injecting pipeline 13, other fixture components are adopted
45# steel.
Embodiment 1
In the present embodiment, 6061 aluminium alloy inner containers are through aluminium alloy pipe two ends closing in mould pressing, be two ends have little ozzle and
Ellipsoidal head and between cylindricality straightway hollow inner bag, its volume be 130L, total length is 1300mm, and internal diameter is Ф
400mm, wall thickness are 7.6mm, and straightway is 870mm, straightway linearity ＜ 0.5mm, and two ends ozzle external diameter is Ф 56mm, endoporus
A diameter of Ф 20mm.It is below the detailed process of heat treatment method：
Step (one), 6061 aluminium alloy cylindricality inner bags are fixedly mounted on heat treatment tooling；
Step (two), big volume inner bag (6) on the heat treatment tooling are put in heat-treatment furnace carry out at solid solution
Reason, is incubated 120min at 535 ± 5 DEG C, after being disposed, hangs out simultaneously heat treatment tooling and cylindricality aluminium alloy inner container (6) rapidly
It is transferred to above Quenching Treatment tank, in transfer process, spray equipment (7) is moved to framework (1) upper end rapidly manually solid
Positioning puts (8), and when heat treatment tooling drops to inner bag (6) to be contacted with water, the spray equipment (7) above opening sink water is opened,
And it is rapid by heat treatment tooling and inner bag (6) submerged.Quenching shift time is less than 60s；.
After step (three), quenching are finished, frock will be processed and cylindricality aluminium alloy inner container (6) together will be put in heat-treatment furnace
Row Ageing Treatment, is incubated 10h, air cooling at 165 ± 5 DEG C.After being disposed, aluminium alloy inner container is loaded onto dismounting from quencher.
Inner bag (6) bottle mechanical property after processing in the present embodiment as shown in table 1, upper/lower terminal ozzle and straight nearby
Line segment material mechanical performance is satisfied by design requirement, the linearity ＜ 1.0mm of inner bag (6) straightway, meet design requirement≤
1.5mm, it is ensured that the mechanical property and dimensional accuracy of product, improves the reliability of composites gas cylinder inner bag.
1 130L aluminium alloy inner container bottle mechanical properties of table
The above, optimal specific embodiment only of the invention, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, the change or replacement that can readily occur in,
Should all be included within the scope of the present invention.
The content not being described in detail in description of the invention belongs to the known technology of professional and technical personnel in the field.
Claims (5)
1. the cylindricality aluminium alloy inner container heat treatment method of little ozzle, major diameter, big L/D ratio, it is characterised in that：
Step (one), the cylindricality aluminium alloy inner container that two ends are had little ozzle are vertically fixedly mounted on heat treatment tooling, the heat
Process frock include cylindricality outside framework (1), inner bag upper end fixing device (2), end breaket (3), balancing weight (4) and framework under inner bag
Baffle plate (5)；Wherein, end breaket (3) under inner bag, and end breaket under inner bag are fixed in cylindricality outside framework (1) near lower end position
(3) below, base of frame places balancing weight (4), and aluminium alloy inner container (6) is vertically disposed on end breaket under inner bag (3), aluminium alloy
Inner bag (6) direct tube section upper end is vertically fixed on cylindricality outside framework (1) near upper end position, frame baffle (5) by fixing device (2)
It is wrapped circumferentially around along cylindricality outside framework, and is fixed at the top of cylindricality outside framework (1)；
Step (two), the aluminium alloy inner container (6) being vertically mounted on heat treatment tooling is put in heat-treatment furnace carries out at solid solution
Reason, after being disposed, heat treatment tooling and cylindricality aluminium alloy inner container (6) is hung out and is transferred to above Quenching Treatment tank,
In transfer process, spray equipment (7) is moved to cylindricality outside framework (1) upper end fixed position (8), when heat treatment tooling drops to
When inner bag (6) is contacted with water, spray equipment (7) above opening sink water, and heat treatment tooling and inner bag (6) are sunk to water rapidly
In；
After step (three), quenching are finished, heat treatment tooling and aluminium alloy inner container (6) are together put in heat-treatment furnace carries out timeliness
Process, after being disposed, aluminium alloy inner container (6) is dismantled from heat treatment tooling.
2. the cylindricality aluminium alloy inner container heat treatment method of little ozzle according to claim 1, major diameter, big L/D ratio, its
It is characterised by：Cylindricality outside framework (1) top center of the heat treatment tooling arranges positioning annulus, and annulus is highly less than aluminium
Alloy inner bag (6) ozzle height, diameter are mated with inner bag upper end nozzle diameter.
3. the cylindricality aluminium alloy inner container heat treatment method of little ozzle according to claim 1, major diameter, big L/D ratio, its
It is characterised by：Inner bag upper end fixing device (2) of the heat treatment tooling includes inverted-cone shape baffle plate (9), fix bar (10), pure
The thin bed course of aluminium (11)；Wherein, inverted-cone shape baffle plate (9) lower edge is the high cylindrical extensions of 10～15mm, along inner bag (6) straight line
Duan Fangxiang fits, and its girth is matched with inner bag (6) straightway upper limb, and is fixed on inner bag (6) straightway upper limb by clip,
On the inside of inverted-cone shape baffle plate (9) extension, laying fine aluminium is thin bed course (11), is symmetrically welded two admittedly on the outside of inverted-cone shape baffle plate (9)
Fixed pole (10), fix bar (10) free end are fixed on cylindricality outside framework (1) edge, and inverted-cone shape baffle plate (9) upper limb circumference is little
In cylindricality outside framework (1) inner circle, and it is less than cylindricality outside framework (1) upper surface.
4. the cylindricality aluminium alloy inner container heat treatment method of little ozzle according to claim 1, major diameter, big L/D ratio, its
It is characterised by：Under the inner bag of the heat treatment tooling, end breaket (3) includes a positioning annulus and two fix bars；Positioning annulus
Used as the center of end breaket under inner bag, less than cylindricality inner bag (6) diameter, more than inner bag nozzle diameter, top is outer for positioning circle diameter
It is welded on cylindricality outside framework (1) edge with fix bar on the outside of annulus.
5. the cylindricality aluminium alloy inner container heat treatment method of little ozzle according to claim 1, major diameter, big L/D ratio, its
It is characterised by：Described spray equipment (7) are included in the chilling spray pipeline (12) and upper end ozzle of inner bag upper end ozzle and end socket
Hole water injecting pipeline (13)；Wherein, inner bag upper end ozzle be connected with water pump with chilling spray pipeline (12) one end of end socket, the other end
Bent angle porous nozzle is housed, upper end ozzle endoporus water injecting pipeline (13) one end is also connected with water pump, the other end is equipped with right angle pipe
Shower nozzle, upper end ozzle endoporus water injecting pipeline (13) pipe diameter are straight less than cylindricality outside framework (1) top center positioning annulus
Footpath.
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| CN107570972A (en) * | 2017-09-22 | 2018-01-12 | 航天材料及工艺研究所 | The manufacturing process of large-scale high mode spheroid shape face Aluminum alloys tank Loadings On Hemispherical Shell |
| CN107723636B (en) * | 2017-10-29 | 2019-05-24 | 航天材料及工艺研究所 | Improve the thermomechanical treatment process of high-intensity thermal deformation resistant magnesium alloy cylindrical member performance |
| CN108555543B (en) * | 2018-05-11 | 2020-08-14 | 航天材料及工艺研究所 | Forming method of semispherical shell of aluminum alloy storage tank |
| CN108637602B (en) * | 2018-05-11 | 2020-10-23 | 航天材料及工艺研究所 | Forming method of hemispherical shell of large-size thin-wall aluminum alloy storage tank |
| CN114062038A (en) * | 2020-07-31 | 2022-02-18 | 力合科技（湖南）股份有限公司 | Pollution tracing management and control method |
| CN112251585B (en) * | 2020-09-30 | 2023-03-17 | 中材科技(成都)有限公司 | Thin-wall aluminum alloy gas cylinder liner solid solution frame and framing method thereof |
| CN113667804A (en) * | 2021-08-23 | 2021-11-19 | 湖南云箭集团有限公司 | Device for delaying cooling speed of steel shell after heat treatment and using method thereof |
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| JP2005133211A (en) * | 2003-10-08 | 2005-05-26 | Ntn Corp | Heat treatment system |
| CN2685348Y (en) * | 2004-03-16 | 2005-03-16 | 南京长江电炉厂有限公司 | Heat processing equipment |
| DE102005045340B4 (en) * | 2004-10-05 | 2010-08-26 | Aleris Aluminum Koblenz Gmbh | Process for heat treating an aluminum alloy element |
| CN203419954U (en) * | 2013-08-29 | 2014-02-05 | 江苏高皓工业炉有限公司 | Vertical quenching furnace |
| CN204509405U (en) * | 2015-01-29 | 2015-07-29 | 湖北泰福瑞轻合金有限公司 | A kind of press quenching device of complicated big cross section aluminium section bar |
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