CN107406924A - Tank body aluminium alloy plate - Google Patents
Tank body aluminium alloy plate Download PDFInfo
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- CN107406924A CN107406924A CN201680014124.2A CN201680014124A CN107406924A CN 107406924 A CN107406924 A CN 107406924A CN 201680014124 A CN201680014124 A CN 201680014124A CN 107406924 A CN107406924 A CN 107406924A
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- aluminium alloy
- tank
- mass
- alloy plate
- baking
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
Abstract
The present invention provides a kind of tank body aluminium alloy plate, it is characterized in that, Si, Fe, Cu, Mn and Mg containing specified quantitative respectively, remainder is made up of Al and inevitable impurity, yield strength after the baking of 200 DEG C × 20 minutes is 240~295MPa, the yield strength (unit after by the baking of the aluminium alloy plate：MPa) it is set to X-axis, by by the dislocation density (unit of the thickness of slab central portion of X-ray diffraction measure：×1014/m2) be set in the chart of Y-axis, the dislocation density of thickness of slab central part is in the range of the polygon surrounded by the line segment of link following coordinate A, B, C, D, E each point.Coordinate A (240,1.0 × 1014)；Coordinate B (240,8.0 × 1014)；Coordinate C (276,8.0 × 1014)；Coordinate D (295,14.2 × 1014)；Coordinate E (295,1.0 × 1014)。
Description
Technical field
Used the present invention relates to one kind in order to carry out DI (draw＆ironing) shapings shaping the tank body of seamless tin
Tank body aluminium alloy plate.
Background technology
For the purpose of carrying capacity of environment reduces and cost reduces, the thin-walled property of beverage aluminium pot body raw material is constantly promoted,
Accompany with this, also constantly promote the thin-walled property of the tank skin after DI shapings (relative to 105~110 μm of left sides of thickness of slab of conventional tank skin
The right side, thin-walled property is to 95~100 μm or so).
If the thickness of slab of tank skin is thinned, following unfavorable condition is easily produced：When thrust contacts with the outer surface of tank skin
And when being pressed into, tank skin is run through in the front end of thrust, perforate (pin hole) and make content leaks.The leakage of content is great thing
Part, therefore, even if seeking the aluminium pot body for being also difficult to perforate (puncture resistance is excellent) when thrust is pressed at the tank skin of thin-walled property
And aluminium pot body raw material.
The metal of Si, Fe, Cu, Mn, Mg containing ormal weight and the specific dimensions of plate surface has been recorded in patent document 1
Between compound individual number density and area occupation ratio be limited in tank body aluminium alloy plate in prescribed limit.According to patent document 1
Record, it is excellent that the pinhole resistance (puncture resistance) of tank body that DI is shaped to achieve is carried out to the aluminium alloy plate.But in the aluminium
In the case of alloy sheets, the thickness of slab of the tank skin after DI is shaped be set as it is thicker and more than 110 μm, above-mentioned thin-walled can not be tackled
Change trend.
Si, Fe, Cu, Mn, Mg containing ormal weight are recorded in patent document 2 and specific in plate surface and section
The individual number density of the intermetallic compound of size is limited in the tank body aluminium alloy plate in prescribed limit with area occupation ratio.According to special
The record of sharp document 2, the aluminium alloy plate is carried out in the tank bodies that are shaped to achieve of DI, even if the thickness of slab of tank skin it is relatively thin and be 90~
95 μm or so (with reference to the embodiments of patent document 2), puncture resistance is also excellent.But in the embodiment of patent document 2, it is right
Aluminium alloy plate carries out film lamination and then carries out DI shapings, for not making without tank body of the film lamination with regard to the type of DI shapings
Consider.The major part of the aluminium pot to circulate in the market is all the aluminium pot with regard to DI shapings without film lamination, is looked like in this layer
Down it may be said that the aluminium alloy plate described in the embodiment of patent document 2 lacks versatility.
Si, Fe, Cu, Mn, Mg containing ormal weight are recorded in patent document 3 and total comprising the originals of the Mg of more than 5
The averag density of the specific atom set body (cluster) of son and/or Cu atoms is limited in the tank body in prescribed limit
Use aluminium alloy plate.According to the record of patent document 3, the tank body that DI is shaped to achieve is carried out to the aluminium alloy plate and is being manufactured into aluminium pot
The subgrain granulation for implementing the tank body tissue after application sintering processes after body is promoted, and the puncture resistance of tank body improves.
Citation
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2007-197815 publications
Patent document 2：Japanese Unexamined Patent Publication 2009-270192 publications
Patent document 3：Japanese Unexamined Patent Publication 2014-125677 publications
The content of the invention
The invention problem to be solved
Recorded in patent document 3 and excellent puncture resistance is obtained in the DI tanks for making tank skin thin-walled property.On the other hand,
For the tank body aluminium alloy plate of DI tanks, in addition to requiring above-mentioned puncture resistance, also require not crack when DI is processed
(pulling apart), in the tank bottoms of DI tanks the spies such as fold (the caused fold in the range of from the grounding parts of tank bottom to side wall) are not produced
Property.But in the DI tanks by raw material thin-walled property, the tank bottom fold is easily produced, generate the DI tanks of the tank bottom fold
As bad order product.
It is even if excellent resistance to it is an object of the invention to provide can also be obtained in a kind of DI tanks by tank skin thin-walled property
Puncture property, even and if carry out also obtaining excellent puncture resistance in the DI tanks of DI shapings pressing without film layer, simultaneously
The tank body aluminium alloy plate of tank bottom fold will not be produced.
For solving the scheme of problem
If make DI shape after the work hardening capacity (=homogeneous deformation ability) of tank skin improve, when thrust is from tank skin
Outer surface press-in and when deforming tank skin, the thickness of slab for being not likely to produce tank skin reduces (necking down), reaches the load (thorn untill fracture
Wear intensity) improve.In the present invention, by the way that the relation between the yield strength after the dislocation density of aluminium alloy plate and baking is limited
System improves the work hardening capacity of the tank skin after DI shapings in prescribed limit, improves the puncture resistance after DI shapings.Meanwhile
Thus, it is possible to the generation of the tank bottom fold after preventing DI from shaping.
Tank body aluminium alloy plate involved in the present invention contains Si：0.1~0.5 mass %, Fe：0.3~0.6 mass %,
Cu：0.1~0.35 mass %, Mn：0.5~1.2 mass %, Mg：0.7~2.5 mass %, remainder is by Al and can not keep away
The impurity exempted from is formed.The yield strength that the aluminium alloy plate carries out after the baking of 200 DEG C × 20 minutes is 240~295MPa, is being incited somebody to action
Yield strength (unit after the baking of the aluminium alloy plate：MPa) as transverse axis, the thickness of slab that will be gone out by X-ray diffraction measure
Dislocation density (the unit of central portion：×1014/m2) in Fig. 4 for being shown as the longitudinal axis, yield strength after the baking with it is logical
The dislocation density for crossing the thickness of slab central part that X-ray diffraction measure goes out is in by point of contact A (240,1.0 × 1014), point B (240,
8.0×1014), point C (276,8.0 × 1014), point D (295,14.2 × 1014), point E (295,1.0 × 1014) each point line segment
In the range of the polygon surrounded (including on line segment).The aluminium alloy plate contains Cr as needed：Below 0.10 mass %, Zn：
Below 0.40 mass %, Ti：One or more of below 0.10 mass %.
The effect of invention
Tank body involved in the present invention with aluminium alloy plate by the way that dislocation density is limited in prescribed limit, even if will not
Carry out film lamination but in the case of the tank skin thin-walled property after DI shapings, the tank skin after DI shapings and baking also has excellent
Puncture resistance.Thus, when thrust contacts with the tank skin after filling etc., the fracture of the tank skin after filling can be prevented, from
And prevent the leakage of content.In addition, tank body involved in the present invention with aluminium alloy plate by the way that dislocation density is limited in
In prescribed limit, it can prevent the tank bottom after DI shapes from producing fold.Also there is excellent thinned processability, DI shapings and
Tank after baking has high compressive resistance.
Tank body involved in the present invention can be also suitable for carrying out DI shapings after film lamination with aluminium alloy plate.
Brief description of the drawings
Figure 1A is the figure that the order of the compressive resistance experiment to tank illustrates, and is used in compressive resistance experiment
The side view of tank.
Figure 1B is the figure that the order of the compressive resistance experiment to tank illustrates, and is the major part side of compression tester
View.
Fig. 1 C are the figures that the order of the compressive resistance experiment to tank illustrates, and are the compression testers shown in Figure 1B
Top view.
Fig. 2A is the figure that the order of the compressive resistance experiment to tank illustrates, and is side when tank to be fixed on to keeper
View.
Fig. 2 B are the figures illustrated to the order of the compressive resistance of tank experiment, and are side of the tank bottom because of internal pressure and during warpage
View.
Fig. 3 is the sectional view of the assay method for the puncture intensity for schematically illustrating tank body.
Fig. 4 is the yield strength after the baking for the aluminium alloy plate for showing embodiment and the thickness of slab by X-ray diffraction measure
The figure of relation between the dislocation density of central portion, aluminium alloy plate involved in the present invention are included in each point by point of contact A~E
The polygon that surrounds of line segment in the range of.
Embodiment
Hereinafter, tank body involved in the present invention is described in detail with aluminium alloy plate and its manufacture method.
<The composition composition of aluminium alloy>
(Si：0.1~0.5 mass %)
If Si contents are less than 0.1 mass %, when DI shapes, 0~180 ° of ear processed uprises, when easily producing thinned processing
Raw edges and thus caused pull apart.On the other hand, if Si contents have not again more than 0.5 mass % in hot rolling material remaining
Crystal grain, so as to which 45 ° of ears processed uprise when DI shape, easily produce the raw edges being thinned when processing and thus caused pull
It is disconnected.In addition, if Si contents form a large amount of Al-Fe-Mn-Si series intermetallic compounds, Mg-Si systems metal more than 0.5 mass %
Between compound, thus, when to tank skin applying power and the tank skin deform when, encourage compound around hole formed and cracking
Propagate, puncture resistance reduces.
(Fe：0.3~0.6 mass %)
If Fe contents less than 0.3 mass %, have non-recrystallization in hot rolling material remaining, therefore, 45 ° of ears processed when DI shapes
Uprise, easily produce raw edges when processing is thinned and thus caused pull apart.On the other hand, if Fe contents are more than 0.6 matter
% is measured, then Al-Fe-Mn series intermetallic compounds become more, easily produce and pull apart when processing is thinned.Further, since Al-Fe-Mn
Series intermetallic compound becomes more, causes, when making tank skin applying power the tank skin to deform, to encourage the hole shape around compound
Into and cracking propagation, puncture resistance reduce.
(Cu：0.1~0.35 mass %)
The intensity deficiency if Cu contents are less than 0.1 mass %, the compressive resistance deficiency of tank.On the other hand, if Cu contents surpass
Crossing 0.35 mass %, then intensity becomes too much, easily produces and pulls apart when processing is thinned.
(Mn：0.5~1.2 mass %)
The intensity deficiency if Mn contents are less than 0.5 mass %, the compressive resistance deficiency of tank.On the other hand, if Mn contents surpass
1.2 mass % are crossed, then Al-Fe-Mn series intermetallic compounds become more, easily produce and pull apart when processing is thinned.Further, since
Al-Fe-Mn series intermetallic compounds become more, cause, when making tank skin applying power the tank skin to deform, to encourage around compound
Hole formed and cracking propagation, puncture resistance reduce.
(Mg：0.7~2.5 mass %)
The intensity deficiency if Mg contents are less than 0.7 mass %, the compressive resistance deficiency of tank.In addition, work hardening capacity is (
Even deformability) deficiency, necking down is easily produced when deforming the tank skin to tank skin applying power, puncture resistance reduces.It is another
Aspect, intensity becomes too much if Mg contents are more than 2.5 mass %, easily produces and pulls apart when processing is thinned.In order to be subtracted
Thin processability and the especially excellent characteristic of the compressive resistance of tank, puncture resistance, the lower limit of Mg contents is preferably 1.0 mass %,
The upper limit is preferably 1.8 mass %.
(Cr：Below 0.10 mass %)
If Cr is below 0.10 mass % content, the tank after will not being shaped to the material property of aluminium alloy plate, DI is special
Property impacts.Cr is inevitable impurity, but in order to which cost of implementation reduces, such as also can be by improving the waste material in raw material
(waste material containing a large amount of Cr etc.) match ratio etc., Cr is actively added within the above range.But if Cr contents are more than 0.10 matter
Measure %, then in hot rolling material remaining non-recrystallization, when DI shape, 45 ° of ears processed uprise, when be thinned process when easily produce raw edges with
And thus caused pull apart.Thus, the Cr contents in aluminium alloy are limited in above range.
(Zn：Below 0.40 mass %)
If Zn is below 0.40 mass % content, the tank after will not being shaped to the material property of aluminium alloy plate, DI is special
Property impacts.Zn is inevitable impurity, but in order to which cost of implementation reduces, such as also can be by improving the waste material in raw material
Match ratio of (waste material of heat exchanger clad material etc.) etc., Zn is actively added within the above range.
(Ti：Below 0.10 mass %)
For the purpose of the miniaturization of ingot casting crystal grain, Ti is added as needed on., can if making ingot structure miniaturization during casting
Enough improve castability and realize high-speed casting.The effect is obtained by adding more than 0.01 mass %.On the other hand, if addition
More than 0.10 mass % Ti, then the blocking of filter shifts to an earlier date, and molten metal gradually becomes to be difficult to by filter in casting,
It is final to have to stop casting.Thus, the Ti contents in aluminium alloy are limited in above range.It should be noted that adding
In the case of adding Ti, the fine agent of ingot casting (Al-Ti-B) that Ti and B mass ratio is 5: 1 is added in the form of honeycomb or bar
It is added in the molten metal before casting, therefore also necessarily adds B corresponding with content ratio.
(other inevitable impurity)
For the inevitable impurity (V, Na, Zr, Ni, Ca etc.) beyond above-mentioned element, even if containing 0.05 matter respectively
Amount and is added up to below 0.15 mass % below %, and tank characteristic that also will not be to the material property of aluminium alloy plate, after DI shapes is made
Into influence.It should be noted that for these elements, if being no more than the content, not only as inevitable impurity and
In the case of containing and in the case where intentionally improving match ratio of waste material comprising these elements etc. and energetically adding,
It there will not be the effect of the damage present invention.
<The characteristic of aluminium alloy plate>
(the yield strength after baking：240~295MPa)
If the aluminium alloy plate after the baking of 200 DEG C × 20 minutes yield strength less than 240MPa if intensity deficiency, DI into
The compressive resistance deficiency of tank after shape and baking.On the other hand, if aluminium alloy plate after the baking of 200 DEG C × 20 minutes is bent
Taking intensity, then intensity becomes too much more than 295MPa, easily produces and pulls apart when processing is thinned, productivity ratio reduces.Need what is illustrated
It is the intensity linkage before the intensity and baking after baking, before baking (processing is thinned in the big aluminium alloy plate of the intensity after baking
When) intensity it is also big.Yield strength after baking is preferably more than 250MPa.
(dislocation density of thickness of slab central portion)
Dislocation is due to cold rolling and the defects of imported into the wire or striated of tank body aluminium alloy plate.These dislocation energies
Wire or striated are enough identified as by the transmission electron microscope of 50,000 times of multiplying power.If dislocation density is big, due to position
Wrong intersection etc. and form dislocation of standing in great numbers, turn into the obstacle of the movement of other dislocations, intensity increase.
Figure 4 illustrates the dislocation density of the thickness of slab central part in aluminium alloy plate involved in the present invention and 200 DEG C × 20
The relation between yield strength after the baking of minute.Fig. 4 is the yield strength (unit after the baking by aluminium alloy plate：MPa)
It is set to transverse axis, by by the dislocation density (unit of the thickness of slab central portion of the aluminium alloy plate of X-ray diffraction measure：×1014/m2) set
Turn into the semi-log chart of natural logrithm scale for the longitudinal axis and the longitudinal axis.The dislocation density of aluminium alloy plate involved in the present invention and baking
The value of yield strength after roasting be limited at as the point A shown in link Fig. 4, point B, point C, point D, point E line segment surround it is polygon
In the range of shape (including on line segment).It should be noted that for transverse axis is set into X-axis, the seat of each point of longitudinal axis when being set to Y-axis
Mark (X, Y), point A is (240,1.0 × 1014), point B is (240,8.0 × 1014), point C is (276,8.0 × 1014), point D is
(295,14.2 × 1014), point E is (295,1.0 × 1014)。
If the dislocation density of the thickness of slab central portion of aluminium alloy plate is less than 1.0 × 1014/m2, then be thinned processing when processing it is hard
Change and become big, easily produce and pull apart.On the other hand, if dislocation density is more than 8.0 × 1014/m2, then the tank after DI shapes and toasted
Work hardening capacity (homogeneous deformation ability) deficiency of wall, contracting is easily produced when deforming the tank skin to tank skin applying power
Neck, puncture resistance reduce, and also easily produce tank bottom fold.But the yield strength of aluminium alloy plate after baking be in 276~
During 295MPa scope, dislocation density can also be more than 8.0 × 1014/m2.More specifically, the point C shown in Fig. 4 is being linked
(276,8.0 × 1014) and point D (295,14.2 × 1014) line segment lower section region in, can to DI shape and toast
Tank skin afterwards assigns appropriate work hardening capacity, can not reduce puncture resistance, be also prevented from the generation of tank bottom fold.
By the way that the value of the yield strength after the dislocation density of the thickness of slab central portion of aluminium alloy plate and baking is controlled above-mentioned
In the range of, pulling apart when can prevent that processing is thinned, it is ensured that the compressive resistance of the tank after DI shapings and baking, and tank skin is assigned
That gives good work hardening capacity and obtain excellent puncture resistance and tank bottom fold prevents effect.
<The manufacture method of aluminium alloy plate>
Aluminium alloy plate involved in the present invention can pass through the heat treatment that casts, homogenizes, hot rolling and each operation of cold rolling
Manufacture.After the intermediate annealing (also referred to as black annealing) and the intermediate annealing and cold rolling of cold rolling midway after hot rolling
Essence annealing.Moreover, the manufacture method of aluminium alloy plate involved in the present invention carries out cold rolling preferably by tandem mill, improve
Coiling temperature, and in the cooling procedure after batching the cooling velocity of defined temperature province is controlled relatively low.Thereby, it is possible to
Promote the recovery of the material in cold rolling and after batching, the dislocation density of aluminium alloy plate (production board) can be controlled in the model
In enclosing.
Hereinafter, each operation is illustrated.
First, semi-continuous casting method cast aluminium alloy gold known to DC castings etc. is passed through.
Then, after the region of formation heterogeneous structure on ingot casting top layer is removed by building up by welding, based on conventional side
Method implements the heat treatment that homogenizes.At this time it is also possible to using two sections of homogenize heat treatments or second homogenateization heat treatment.This place
The two sections of heat treatments that homogenize said refer at high temperature by ingot casting keep the stipulated time (heat treatment that homogenizes of first stage) it
Afterwards, room temperature is not cooled to, but stops cooling at a temperature of more than 200 DEG C, keeps stipulated time (second-order at such a temperature
The heat treatment that homogenizes of section).In addition, second homogenateization heat treatment refers at high temperature keep ingot casting the stipulated time (for the first time
Homogenize heat treatment) after, less than 200 DEG C of the temperature including room temperature is temporarily cooled to, is then heated again and defined
The stipulated time is kept at a temperature of homogenize process (homogenize heat treatment for the second time).
After the heat treatment that homogenizes, hot rolling is then carried out without cooling, preferably terminates hot rolling more than 300 DEG C.System
The hot-rolling stock made is recrystallized structure.
In the case where carrying out based on tandem mill passage or being rolled using unit milling train, by
The so-called continuous passage of lower a time is directly carried out after one passage to carry out ensuing cold rolling.Pass through tandem mill
One passage or the continuous passage of unit milling train carry out cold rolling, and the thus processing heating in cold rolling becomes big, promotes the dynamic of material
State recovers and the recovery after batching.It should be noted that from the viewpoint of production efficiency, tandem mill is preferably based on
Rolling.
Total rolling rate of cold rolling is 80~90%.The rolling rate passes through 1 logical plate or unit based on tandem mill
The logical plate of multiple passages of milling train and realize.If cold rolling total rolling rate less than 80% if aluminium alloy plate intensity deficiency, DI into
The compressive resistance deficiency of tank after shape and baking.On the other hand, if total rolling rate is more than 90%, intensity becomes too much, and
Cause the increase of 45 ° of ears processed, easily produce raw edges when processing is thinned and thus caused pull apart.In order to increase processing hair
Heat, the dislocation density for improving coiling temperature and being formed as the specific scope of institute of the invention are, it is necessary to working roll application using path
High pressure.In particular, it is desirable to carry out cold rolling using below diameter 650mm working roll, below diameter 450mm is preferably utilized
Working roll carries out cold rolling.
Coiling temperature after cold rolling is preferably more than 150 DEG C.By improving coiling temperature, promote the recovery of material, aluminium closes
The dislocation density of golden plate (production board) is reduced in above range, the work hardening capacity of the tank skin after DI shapings and baking
(homogeneous deformation) improves, and prevents the generation of tank bottom fold, and puncture resistance improves.On the other hand, if coiling temperature is more than 180
DEG C, then it can produce excessive recovery and cause dislocation density further to be reduced out of above range.As a result, when processing is thinned
Processing hardening become big, easily produce and pull apart.In addition, the softening of the aluminium alloy plate based on processing heating becomes big, hold in rolling
It is also easy to produce disconnected plate.As a result, the productivity ratio of aluminium alloy plate is greatly reduced, therefore it is undesirable in practical application.Thus,
Coiling temperature after cold rolling is preferably more than 150 DEG C, more preferably more than 160 DEG C, and higher limit is 180 DEG C.
In addition, in the temperature province (more than 120 DEG C of temperature provinces) from coiling temperature to 120 DEG C, coiled material is averaged
Cooling velocity is 15 DEG C/below hr.By making the cooling velocity small to 15 DEG C/below hr, promote the recovery of material, aluminium alloy plate
The dislocation density of (production board) is reduced in above range, and the work hardening capacity of the tank skin after DI shapings and baking is (uniformly
Deformability) improve, the generation of tank bottom fold is prevented, and puncture resistance improves.The cooling in temperature province more than 120 DEG C
In the case that speed is more than 15 DEG C/h, the recovery of material is insufficient, dislocation density can not be made fully to reduce, DI shapings and baking
The work hardening capacity deficiency of tank skin afterwards, easily produces tank bottom fold, and puncture resistance reduces.
Embodiment
Hereinafter, it will confirm that the comparative example of important document of the embodiment of the effect of the present invention with being unsatisfactory for the present invention is contrasted
And specifically illustrate.It should be noted that the present invention is not limited to the embodiment.
The aluminium alloy of the composition shown in table 1,2 is melted, the ingot casting that thickness 600mm is made using semi-continuous casting method (is compared
Except the No.12 of example).Building up by welding is carried out to the top layer of the ingot casting, after implementation homogenizes heat treatment, then carries out thick heat
Roll and smart hot rolling.Do not implement intermediate annealing afterwards, cold rolling (tandem mill or unit milling train) is carried out to hot-rolling stock, formed
Thickness of slab 0.27mm aluminium alloy plate (coiled material) is simultaneously batched.Without the essence annealing after cold rolling (except the No.19 of comparative example).
It should be noted that the No.12 of comparative example can not be cast due to the blocking of filter.
Recorded in table 1,2 and batched temperature after the species, total rolling rate of cold rolling, cold rolling of milling train used in cold rolling
Spend, batch after the average cooling rate (from coiling temperature to 120 DEG C) of coiled material, the presence or absence of essence annealing after cold rolling and bar
Part.In the situation of cold rolling is carried out using tandem mill, total rolling rate described in table 1,2 is realized by once leading to plate.
[table 1]
[table 2]
Embodiment No.1~22 produced and comparative example No.1~11,13~19 aluminium alloy plate are used as trying
Material, according to yield strength and dislocation density after main points measure baking as shown below.It the results are shown in table 3.
(yield strength after the baking of aluminium alloy plate)
After the baking to implementing 200 DEG C × 20 minutes for examination material (aluminium alloy plate), gathered in rolling parallel direction
JIS5 test film, tension test is carried out according to JISZ2241 regulation, determines 0.2% yield strength.When 0.2% surrender is strong
When degree is in the range of 240~295MPa, it is qualified to be evaluated as.
(dislocation density of aluminium alloy plate)
In the present invention, X-ray diffraction measure dislocation density is passed through.In dislocation, wire, the dislocation of striated are intensive
Region (cell-wall, shear band) is difficult to differentiate by transmission electron microscope, may turn into survey when asking for dislocation density ρ
Determine error.On the other hand, in X-ray diffraction, as described later, according to the half of the diffraction maximum in each face in set tissue
Be worth width calculation dislocation density ρ, accordingly, there exist even it is such stand in great numbers dislocation and the advantages of also less error.
Imported in plastic deformations such as application cold rollings in the tissue of dislocation, lattice strain is produced centered on dislocation.This
Outside, small inclination crystal boundary, cellular construction etc. are developed according to the arrangement of dislocation.The position as obtained from X-ray diffraction pattern
When mistake, the domain structure associated with this, characteristic extension corresponding with the indices of diffraction, shape are presented in diffraction maximum.This can be spread out
The shape (line profile) for penetrating peak is parsed (line profile parsing), obtains dislocation density.
First, by the X-ray diffraction of the thickness of slab central part for examination material (aluminium alloy plate), can obtain in the thickness of slab
The half breadth of the diffraction maximum in each face (each azimuth plane) of the main orientation of the set tissue of center portion.Dislocation density ρ is higher, then on
The half breadth for stating the diffraction maximum in each face is bigger.
It should be noted that using Co., Ltd. Rigaku X-ray diffraction device, Cu, tube voltage are used in target
For 45kV, tube current 200mA, sweep speed be 1 °/min., sampling width is 002 °, measurement range (2 θ) is 30 °~145 °
Under conditions of implement X-ray diffraction experiment.
Then, according to the half breadth of the diffraction maximum in these each faces and by Williamson-Hall methods obtain lattice should
Become (crystal strain) ε, on this basis, dislocation density ρ is calculated by following formulas.In following formula, b is Burgers vector
Size, this uses b=2.8635 × 10-10m。
ρ=16.1 × ε2/b2
For it is each for examination material at arbitrary 5 (being thickness of slab central part) implements X-ray diffraction experiment, according to being obtained
Result calculate average dislocation density.
Then, using embodiment No.1~22 and comparative example No.1~11,13~19 aluminium alloy plate, DI tanks are made.
As preparation method, first, from aluminium alloy plate punching diameter 140mm blank, drawing and forming is carried out to the blank and made straight
Footpath 90mm cup.DI shapings (re-drawing+processing is thinned) are carried out to the cup obtained using general aluminium pot body forming machine, so as to
Make DI tanks.
The external diameter of the DI tanks of making is 66.3mm, and the wall thickness of the most thinner wall section (the 60mm height from tank bottom) of tank skin is 90
μm, the working modulus of the part is 66.7% (raw sheet thickness：270μm).
Progressive forming is carried out to 10000 tanks in each embodiment and comparative example using the aluminium pot body forming machine, and
According to main points as shown below be thinned the evaluation of processability (DI processabilities).Then, using the tank of the shaping, according to following
Shown main points carry out compressive resistance and the measure of puncture intensity and the evaluation of tank bottom fold.It the results are shown in table 3.Need
It is noted that in comparative example No.6,10,16, in the progressive forming based on the aluminium pot body forming machine, produce is pulled more
It is disconnected, therefore the measure of compressive resistance and puncture intensity can not be carried out.
(thinned processability)
Tank in 10000 tanks of progressive forming, to generate a problem that pulling apart is evaluated as the situation below 3 tanks
Qualified (zero), situations more than 4 tanks is evaluated as unqualified (×).
(compressive resistance of tank)
Deburring is carried out to the opening portion of the DI tanks (tank body portion) of making and is formed as height 100mm, implements 200 DEG C × 20 points
The baking of clock.Then, using hydrostatic compression tester, (the hydraulic type pressurization decompression warpage of acetec Co. Ltd. systems is tested
Device, model name WBT-500), the DI tanks after baking are applied internal pressure, determine maximum internal pressure during tank bottom warpage.
As shown in Figure 1B and Fig. 1 C, compression tester possesses the substrate 2 being arranged on body 1, set on a substrate 2
Cylindric keeper 3 and a pair of the fixing components 4,4 for the both sides for being configured at keeper 3.In the short transverse of keeper 3
Centre position is provided with o-ring 5.Rubber tube 6 is internally provided with keeper 3, the rubber tube 6 is extended down by substrate 2,
Link with water-filled pipe, and connected via hydraulic gage and switching valve etc. with hydraulic pamp (not shown).In substrate 2 formed with hole
7, the hole 7 links with vent line, and is connected via switching valve etc. with vavuum pump (not shown).Fixing component 4,4 is led to respectively
Hydraulic cylinder (not shown) is crossed to be retreated.
Pressure test is carried out as follows.
(1) as shown in Figure 1A~Fig. 1 C, after tank bottom is embedded in keeper 3 in a manner of upward, make to fix structure by tank 8
Stroke as defined in the advance of part 4,4.When fixing component 4,4 reaches assigned position (reference picture 2A), the front end of fixing component 4,4 exists
Tank 8 is fixed on keeper 3 by the opening position slightly by lower section of o-ring 5 from the tank skin of both sides pressing tank 8.Thus, the tank skin of tank 8
Inner face is close to around o-ring 5, in addition to the position in rubber tube 6 and hole 7, is sealed in keeper 3 (in tank 8).
(2) make the vacuum pump work, will be deaerated by hole 7 in keeper 3 (in tank 8) to 9.8kPa (0.1kgf/cm2)
Hereinafter, it is then switched off the vent line.
(3) make the hydraulic pressure pump work, from rubber tube 6 towards keeper 3 in (in tank 8) supply water.(tank 8 in keeper 3
It is interior) hydraulic pressure (being measured by the hydraulic gage) with since supply elapsed time it is generally proportionate rise, produce tank
The moment of the warpage at bottom reduces.The maximum internal pressure during warpage that will produce tank bottom is set to the compressive resistance of tank.Produce sticking up for tank bottom
Status display when bent is in Fig. 2 B.
It is more than 618kPa (6.3kgf/cm by the compressive resistance2More than) situation be evaluated as it is qualified.
(puncture intensity)
The opening portion of DI tanks to producing carries out deburring and is formed as height 100mm, is implementing 200 DEG C × 20 minutes
After baking, as shown in figure 3, the opening portion of tank 11 is fixed on into keeper 12 and sealed.Then, in from vent line 13 towards tank
Air is supplied, applies internal pressure 2kgf/cm2, by front end be radius 0.5mm hemispherical steel puncture pin 14 relative to tank skin
Vertically pierced through with speed 50mm/min..Pierce through the rolling direction that the position that pin 14 is pierced through is tank direction of principal axis and aluminium alloy plate
The position that consistent and from tank bottom height L is 60mm.Lasting measure pierces through the load untill pin 14 runs through tank skin, will be obtained
Maximum load be set to puncture intensity.It will puncture through the DI tanks that intensity is more than 35N and be set to qualified.
(evaluation of tank bottom fold)
Arbitrary 30 tank is selected from the DI tanks made by the tank body forming machine, is observed by visual observation from tank for each tank
Scope of the grounding parts of bottom to side wall.By 30 selected tanks all without producing even the situation of tank bottom fold is evaluated
For qualified (zero), even if simply any one of selected 30 tanks will only generate the situation of a tank bottom fold and be evaluated as not
Qualified (×).It should be noted that in above-mentioned tank body forming machine, in anti-fold air pressure 50psi, re-drawing mould
Re-drawing is carried out under conditions of R2.0mm.In addition, a diameter of φ 48mm of the grounding parts of the tank bottom for the DI tanks produced.
[table 3]
* the defined position of the present invention or the position of characteristic difference are deviateed
By the value pictorialization of the dislocation density described in table 3 and the yield strength after baking and it is shown in Fig. 4.
As shown in table 1,3 and Fig. 4, yield strength and dislocation density after the composition of aluminium alloy composition, baking are in
The present invention prescribed limit in embodiment No.1~22 aluminium alloy plate thinned excellent in workability, the compressive resistance of tank and
Puncture intensity is big, does not also produce tank bottom fold.So, in embodiment No.1~22, thin to 90 μm of the thickness of slab of tank skin, when DI into
It is laminated during shape without film, there is excellent puncture resistance, and the generation of tank bottom fold can be prevented.Embodiment No.1~
In 22, cold rolling is carried out in the range of the condition of art heretofore taught, batch and batch after cooling.
It should be noted that the aluminium alloy plate of embodiment No.1~22 have excellent puncture resistance be considered as because,
The work hardening capacity (=homogeneous deformation ability) of tank skin improves, when puncture pin 14 is pressed into and tank skin deforms, it is difficult to produce tank
The thickness of slab of wall reduces (necking down).DI, which is carried out, using the aluminium alloy plate of embodiment No.1~22 shapes the tank formed in thrust with filling out
The fracture of tank skin can be prevented during tank skin contact after filling etc., so as to prevent the leakage of content.In addition, in embodiment
In the aluminium alloy plate of No.1~22, the generation that can prevent tank bottom fold is considered as because the work hardening capacity of material carries
Height, thus, plastic force (tension force) increase of tank direction of principal axis when tank body forming machine carries out re-drawing processing, as a result, suppressing
Buckling for tank circumferential direction (generation of=fold).
On the other hand, as shown in table 2,3 and Fig. 4, yield strength and dislocation after the composition of aluminium alloy composition, baking
Comparative example No.1~11 of the density outside the prescribed limit of the present invention, the thinned processability of 13~19 aluminium alloy plate, tank
Any one of evaluation of compressive resistance, puncture property and tank bottom fold is unsatisfactory for the benchmark of the present invention.
In comparative example No.1, Si contents deficiency, therefore poor in processability is thinned.In comparative example No.2, Si contents are excessive,
Poor in processability is thinned, puncture resistance is also poor.
In comparative example No.3, Fe contents deficiency, therefore poor in processability is thinned.In comparative example No.4, Fe contents are excessive,
Poor in processability is thinned, puncture resistance is also poor.
In comparative example No.5,7,9, Cu, Mn, Mg content deficiency, therefore the yield strength deficiency after baking respectively, tank
Compressive resistance is poor.In comparative example No.9, puncture resistance is also poor.In comparative example No.6,10, Cu, Mg content are excessive respectively, because
The yield strength of aluminium alloy plate after this baking is excessive, and poor in processability is thinned.In comparative example No.8,11, Mn, Cr content difference
It is excessive, therefore poor in processability is thinned.In comparative example No.8, puncture resistance is also poor.In No.12, Ti contents are excessive, therefore such as
Previously as narration, it can not be cast.
In comparative example No.13, total rolling rate deficiency of cold rolling, therefore the yield strength deficiency after baking, compressive resistance
Difference.In comparative example No.14, total rolling rate is excessive, therefore the yield strength of aluminium alloy plate is excessive, and poor in processability is thinned.
In comparative example No.15, coiling temperature is low, and Dynamic- Recovery and recovery after batching are insufficient, aluminium alloy plate
Dislocation density is high, and the puncture resistance of tank is poor, generates tank bottom fold.In comparative example No.16, coiling temperature is high, aluminium alloy plate
Dislocation density reduce, be thinned poor in processability.
In comparative example 17, the cooling velocity from coiling temperature to 120 DEG C of temperature province is big, and the recovery after batching is not filled
Point, the dislocation density of aluminium alloy plate is high, and the puncture resistance of tank is poor, generates tank bottom fold.
In comparative example No.18, implement cold rolling using unit milling train, and have the time in vain between passage, therefore coiling temperature
Low, Dynamic- Recovery and recovery after batching are insufficient, and the dislocation density of aluminium alloy plate is high, and processability and the resistance to thorn of tank is thinned
Wearing property is poor, generates tank bottom fold.In comparative example No.19, when implementing cold rolling using unit milling train, and being had in vain between passage
Between, therefore coiling temperature is low, and Dynamic- Recovery and recovery after batching are insufficient, and the effect of essence annealing is also small, and dislocation density is high,
The puncture resistance of tank is poor, generates tank bottom fold.
The present invention is described in detail with reference to specific embodiment, but as long as the spirit and scope for not departing from the present invention then can
Enough apply various changes, amendment, this will be apparent to those skilled in the art.
Japanese patent application (Patent 2015-055910) that the application was proposed based on March 19th, 2015 and 2015 years
December 17 propose Japanese patent application (Patent 2015-245939), by its content by referring to and be incorporated herein.
Industrial utilization possibility
For the present invention tank body aluminium alloy plate, even by the DI tanks of tank skin thin-walled property, without film lamination and
Carry out the DI tanks of DI shapings, it may have excellent puncture resistance, and can prevent from producing fold in tank bottom, especially as two
It is useful that the tank body of tank, which is used,.
Description of reference numerals：
(compressive resistance experiment)
2 substrates
3 keepers
4 fixing components
5 o-rings
6 rubber tubes
8 tanks
(puncture intensity experiment)
11 tanks
12 keepers
14 pierce through pin
Claims (3)
- A kind of 1. tank body aluminium alloy plate, it is characterised in thatThe tank body aluminium alloy plate contains Si：Mass %, Fe of 0.1 mass %~0.5：Mass %, Cu of 0.3 mass %~0.6： Mass %, Mn of 0.1 mass %~0.35：Mass %, Mg of 0.5 mass %~1.2：The mass % of 0.7 mass %~2.5, remainder Point be made up of Al and inevitable impurity, carry out the yield strength after the baking of 200 DEG C × 20 minutes for 240MPa~ 295MPa, the yield strength after by the baking of the aluminium alloy plate are set to X-axis, the thickness of slab that will go out by X-ray diffraction measure The dislocation density of central portion is set in the chart of Y-axis, the yield strength after the baking and the plate gone out by X-ray diffraction measure Line segment of the relation in each point by linking following coordinate A, B, C, D, E between the dislocation density of thick central part surrounds polygon In the range of shape, wherein, the unit of the yield strength is MPa, and the unit of institute's dislocation density is × 1014/m2,Coordinate A (240,1.0 × 1014),Coordinate B (240,8.0 × 1014),Coordinate C (276,8.0 × 1014),Coordinate D (295,14.2 × 1014),Coordinate E (295,1.0 × 1014)。
- 2. tank body aluminium alloy plate according to claim 1, it is characterised in thatThe tank body aluminium alloy plate contains Cr：Below 0.10 mass %, Zn：Below 0.40 mass %, Ti：0.10 mass % with It is one or more of lower.
- 3. tank body aluminium alloy plate according to claim 1 or 2, it is characterised in thatThe Mg contents of the aluminium alloy are the mass % of 1.0 mass %~1.8.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-055910 | 2015-03-19 | ||
| JP2015055910 | 2015-03-19 | ||
| JP2015245939A JP6000437B1 (en) | 2015-03-19 | 2015-12-17 | Aluminum alloy plate for can body |
| JP2015-245939 | 2015-12-17 | ||
| PCT/JP2016/055291 WO2016147816A1 (en) | 2015-03-19 | 2016-02-23 | Aluminum alloy sheet for can body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107406924A true CN107406924A (en) | 2017-11-28 |
Family
ID=56997686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680014124.2A Pending CN107406924A (en) | 2015-03-19 | 2016-02-23 | Tank body aluminium alloy plate |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6000437B1 (en) |
| KR (1) | KR20170113659A (en) |
| CN (1) | CN107406924A (en) |
| TW (1) | TWI582241B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109778020A (en) * | 2019-03-11 | 2019-05-21 | 江苏华企铝业科技股份有限公司 | The high-densit aluminum titanium alloy ingot of high-purity and its manufacturing method |
| CN114457264A (en) * | 2022-01-28 | 2022-05-10 | 邹平宏发铝业科技有限公司 | 5-series aluminum alloy strip for stamping lamp and processing method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7235634B2 (en) * | 2019-09-30 | 2023-03-08 | 株式会社神戸製鋼所 | Aluminum alloy plate for can body |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004300537A (en) * | 2003-03-31 | 2004-10-28 | Kobe Steel Ltd | Aluminum alloy sheet for packaging container and its producing method |
| JP2006283113A (en) * | 2005-03-31 | 2006-10-19 | Furukawa Sky Kk | Aluminum alloy sheet for drink can barrel, and method for producing the same |
| JP2009235475A (en) * | 2008-03-27 | 2009-10-15 | Furukawa-Sky Aluminum Corp | Aluminum alloy sheet for can body excellent in circularity of drawn cup, and method for producing the same |
| CN102676890A (en) * | 2011-03-10 | 2012-09-19 | 株式会社神户制钢所 | Aluminum-alloy sheet and method for producing the same |
| CN103526079A (en) * | 2012-07-06 | 2014-01-22 | 住友轻金属工业株式会社 | A can aluminum alloy plate and a manufacturing method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3708616B2 (en) * | 1996-03-15 | 2005-10-19 | 古河スカイ株式会社 | Manufacturing method of Ai alloy plate for DI can body excellent in formability |
| JP4791072B2 (en) * | 2005-04-14 | 2011-10-12 | 古河スカイ株式会社 | Aluminum alloy plate for beverage can body and manufacturing method thereof |
| JP5848694B2 (en) * | 2012-12-27 | 2016-01-27 | 株式会社神戸製鋼所 | Aluminum alloy plate for DI can body |
-
2015
- 2015-12-17 JP JP2015245939A patent/JP6000437B1/en not_active Expired - Fee Related
-
2016
- 2016-02-23 KR KR1020177025179A patent/KR20170113659A/en not_active Application Discontinuation
- 2016-02-23 CN CN201680014124.2A patent/CN107406924A/en active Pending
- 2016-03-18 TW TW105108505A patent/TWI582241B/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004300537A (en) * | 2003-03-31 | 2004-10-28 | Kobe Steel Ltd | Aluminum alloy sheet for packaging container and its producing method |
| JP2006283113A (en) * | 2005-03-31 | 2006-10-19 | Furukawa Sky Kk | Aluminum alloy sheet for drink can barrel, and method for producing the same |
| JP2009235475A (en) * | 2008-03-27 | 2009-10-15 | Furukawa-Sky Aluminum Corp | Aluminum alloy sheet for can body excellent in circularity of drawn cup, and method for producing the same |
| CN102676890A (en) * | 2011-03-10 | 2012-09-19 | 株式会社神户制钢所 | Aluminum-alloy sheet and method for producing the same |
| CN103526079A (en) * | 2012-07-06 | 2014-01-22 | 住友轻金属工业株式会社 | A can aluminum alloy plate and a manufacturing method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109778020A (en) * | 2019-03-11 | 2019-05-21 | 江苏华企铝业科技股份有限公司 | The high-densit aluminum titanium alloy ingot of high-purity and its manufacturing method |
| CN114457264A (en) * | 2022-01-28 | 2022-05-10 | 邹平宏发铝业科技有限公司 | 5-series aluminum alloy strip for stamping lamp and processing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20170113659A (en) | 2017-10-12 |
| JP6000437B1 (en) | 2016-09-28 |
| TWI582241B (en) | 2017-05-11 |
| JP2016176140A (en) | 2016-10-06 |
| TW201702396A (en) | 2017-01-16 |
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