WO2022138806A1 - 単層で加熱接合機能を有するアルミニウム合金材の製造方法 - Google Patents
単層で加熱接合機能を有するアルミニウム合金材の製造方法 Download PDFInfo
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- WO2022138806A1 WO2022138806A1 PCT/JP2021/047827 JP2021047827W WO2022138806A1 WO 2022138806 A1 WO2022138806 A1 WO 2022138806A1 JP 2021047827 W JP2021047827 W JP 2021047827W WO 2022138806 A1 WO2022138806 A1 WO 2022138806A1
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 45
- 239000000956 alloy Substances 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 239000002356 single layer Substances 0.000 title claims abstract description 6
- 238000003466 welding Methods 0.000 title abstract 2
- 238000005266 casting Methods 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims abstract description 34
- 238000009749 continuous casting Methods 0.000 claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims description 21
- 239000002184 metal Substances 0.000 claims description 21
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- 238000000034 method Methods 0.000 abstract description 12
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- 238000004458 analytical method Methods 0.000 description 16
- 229910052782 aluminium Inorganic materials 0.000 description 13
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- 229910018520 Al—Si Inorganic materials 0.000 description 1
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0622—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
- B22D11/003—Aluminium alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0637—Accessories therefor
- B22D11/064—Accessories therefor for supplying molten metal
- B22D11/0642—Nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0637—Accessories therefor
- B22D11/0648—Casting surfaces
- B22D11/0651—Casting wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/18—Controlling or regulating processes or operations for pouring
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
-
- 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
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
Definitions
- the present invention relates to a method for manufacturing an aluminum alloy material which is a single layer and has a heat bonding function.
- twin rolls a molten metal such as aluminum is supplied between a pair of cooling rolls (hereinafter referred to as twin rolls) arranged one above the other, and the molten metal is solidified by contacting the twin rolls to form a plate material.
- twin rolls a pair of cooling rolls
- it is a method of continuously deforming a molten metal that is being solidified by applying a load by the twin rolls into a plate material.
- centerline segregation part remaining inside the coil has a high solute concentration and a structure different from that of the aluminum base material part, so that the brazing property is significantly reduced, and even when the fin material is processed, it is caused by the centerline segregation part.
- the defects may cause cracks and damage the fins.
- blistering defects may occur due to volume expansion due to remelting of the segregated portion of the center line. Therefore, it is necessary to apply a technique for reducing centerline segregation.
- due to the large amount of dissolved mass and the wide range it is difficult to completely remove the centerline segregation by applying heat treatment or the like using a diffusion phenomenon.
- the present invention has been made against the background of the above problems, and an object of the present invention is to provide a method for manufacturing an aluminum alloy material in which centerline segregation is reduced.
- the method for producing an aluminum alloy material of the present invention contains 2.00 to 3.00% by mass of Si, 0.01 to 0.50% by mass of Fe, and 0.80 to 1.50% by mass of Mn. It is a method for manufacturing an aluminum alloy material having a single layer and a heat bonding function, and the thickness is obtained by rotating a roll having a diameter D (mm) satisfying the following formula (1) at a peripheral speed v (mm / min). Includes a casting step of performing a double roll casting type continuous casting to form a plate material of 3 to 12 mm.
- an aluminum alloy material with reduced centerline segregation can be obtained.
- the inventor of the present invention has established a method for producing an aluminum alloy material of the present invention based on actual casting results and engineering by numerical analysis.
- the length of the solid-liquid phase region at the center of the plate thickness controls the presence or absence and degree of centerline segregation.
- the length of the solid-liquid phase region in the center of the plate thickness is long, the time spent in the solid-liquid phase region is long, so that the amount of solute elements discharged from the solid phase side increases and the centerline segregation is remarkable.
- the solid-liquid phase region in the central portion of the plate thickness is short, the amount of solute elements discharged from the solid phase side is small, and the centerline segregation is slight.
- the solid-liquid phase region referred to here is a position where the temperature of the molten aluminum in the center of the plate thickness becomes the liquidus temperature of the aluminum alloy material (hereinafter referred to as the liquidus temperature position) and the solidus temperature. It is the physical distance between the position (hereinafter referred to as the solid phase temperature position).
- the inventor of the present invention uses numerical analysis to calculate the distance at which the temperature at the center of the plate thickness in the double-roll continuous casting is equal to or lower than the liquidus temperature and above the solidus temperature of the aluminum alloy material. We found a correlation with the centerline segregation by the actual casting test.
- the model system and model formula applied to the numerical analysis will be described in detail below.
- FIG. 1 shows a schematic diagram of a model obtained by numerically analyzing the central portion of the plate thickness in double-roll continuous casting.
- the numerical analysis range is from the tip of the nozzle where the molten aluminum comes into contact with the twin rolls to the center of the roll, and the plate thickness t is 6 to 7 mm, based on a two-dimensional heat transfer equation assuming the center of the plate width.
- An analysis was performed.
- the temperature distributions of the molten aluminum and the plate material within the numerical analysis range were calculated, and the distance L between the liquidus line temperature position and the solid phase line temperature position was calculated by numerical analysis.
- the following equation (2) shows the heat conduction equation as the basic equation for numerical analysis.
- the following formula (3) is a definition formula for the solid phase ratio.
- ⁇ A , CA, ⁇ A , H, f S , T L , and TS are physical property values of the aluminum alloy material and can be derived from the chemical composition of the aluminum alloy material.
- ⁇ A density
- CA specific heat
- ⁇ A thermal conductivity
- H latent heat
- f S solid phase ratio
- TL liquidus temperature
- TS solid phase temperature.
- the molten aluminum and the plate material are parallel from the nozzle tip to the roll in the x direction orthogonal to the y direction, with the direction of the line segment connecting the central axes of the upper roll 5a and the lower roll 5b constituting the twin rolls as the y direction.
- the x direction means the casting direction
- the distance L means the distance in the x direction.
- the specific heat CA is based on the equivalent specific heat method.
- the processing heat generation QH is obtained by the following formula (4).
- ⁇ y is the yield stress of the plate material at 500 ° C.
- h O is the plate thickness on the exit side
- h S is the plate thickness at the completion of solidification
- v is the roll peripheral speed (here, it is equal to the casting speed)
- L is the distance from the solid phase line temperature position at the center of the plate thickness to the roll center position
- RH is the heat conversion rate of the processing work by the roll.
- the roll center position is the position of the midpoint of the line segment connecting the central axes of the upper roll 5a and the lower roll 5b constituting the twin roll.
- the heat transfer between the roll and the molten aluminum and the plate material is associated with the following formula (5).
- TR is the roll surface temperature
- hRA is the heat transfer coefficient between the roll surface and the molten aluminum and the plate material.
- the following formula (6) shows the basic formula of heat conduction in the roll.
- ⁇ R , CR, and ⁇ R are the physical characteristics of the roll, and specifically, ⁇ R : density, CR: specific heat, and ⁇ R : thermal conductivity.
- the diameter D of the upper roll 5a and the lower roll 5b and the respective physical property values ⁇ R , CR, and ⁇ R are the same.
- Table 1 shows the physical property values of the aluminum alloy used in the numerical analysis.
- FIG. 2 shows the effects of the roll diameter D and the roll peripheral speed v on the distance L as an example of the numerical analysis results.
- the roll diameter D and the roll peripheral speed v may be simply expressed as the diameter D and the peripheral speed v.
- the distance L tends to be.
- a more suitable range of conditions can be defined by the following formula (9). This is because the shorter the distance L, the less likely it is that the center line segregation at the center of the plate thickness will occur, and it shows the relationship between the roll diameter D and the peripheral speed v, which can make this distance L 16 mm or less. be.
- the molten metal temperature according to the present invention it is necessary to control and control the molten metal temperature according to the present invention to a temperature equal to or lower than the liquidus temperature of the aluminum alloy material by 80 ° C.
- the molten metal temperature is high, an unsolidified region is likely to remain in the central portion of the plate thickness, and defects are likely to occur in the central portion of the plate thickness.
- the molten metal temperature is low, casting troubles due to solidification in the nozzle tip and thickening of the plate will cause significant deformation resistance due to the double rolls and increase the equipment load.
- a lower limit of temperature may be set.
- the molten metal temperature is measured at the position immediately before the head box or nozzle tip, and if the temperature there is 80 ° C higher than the liquidus temperature, the molten metal temperature (casting temperature) at the time of reaching the roll is that. It can be considered as follows.
- the suitable temperature control range at the position immediately before the head box or the nozzle tip is 20 to 80 ° C. higher than the liquidus temperature of the aluminum alloy material. This temperature range is a casting temperature range in which double roll casting is stable and easy to perform.
- a range of 100 mm to 1500 mm is a suitable range for the roll diameter D.
- the roll diameter D is small, the cooling capacity of the plate material is not sufficient, so that the plate material can be completely solidified and the trouble of hot water leakage is likely to occur.
- the roll diameter D exceeds 1500 mm, it is not practical because it is large in terms of equipment.
- the range of 500 mm to 1300 mm, which is widely used industrially, is a more preferable range of the roll diameter D.
- a range from 300 mm / min to 700 mm / min is a desirable range of the roll peripheral speed v.
- the roll peripheral speed v exceeds 700 mm / min, the time for the solidification of the molten metal by the roll to proceed becomes short, the thickness of the solidified shell grown from the roll becomes thin, and in extreme cases, hot water (molten metal) leaks. It can even reach.
- the thickness of the solidified shell grown from the roll becomes thick, so that the deformation resistance due to the roll becomes remarkable and the equipment load increases remarkably.
- an excessively slow roll peripheral speed v may cause solidification from the inside of the nozzle.
- a suitable range of plate thickness t is 3 mm to 12 mm. If the plate thickness is less than 3 mm, stable casting of the plate material is difficult, and hot water leakage trouble and plate breakage are likely to occur. Further, when the plate thickness t exceeds 12 mm, the deformation resistance due to the double roll becomes remarkable and the equipment load increases remarkably.
- FIG. 1 is a schematic diagram of the numerical analysis of the present invention.
- FIG. 2 is a diagram showing the relationship between the roll diameter and the peripheral speed, and the distance between the liquidus line temperature position and the solid phase line temperature position in the present invention.
- FIG. 3 is a schematic view of the double roll continuous casting method of the present invention.
- FIG. 4a is a cross-sectional structure photograph of a plate material according to an embodiment of the present invention.
- FIG. 4b is a cross-sectional structure photograph of a plate material in a comparative example of the present invention.
- the aluminum alloy material exemplified here can be used for other members by supplying the liquid phase necessary for joining by exuding the liquid phase from the material itself without using a joining member such as a brazing material or a fillering material. It is an aluminum alloy material that can be heat-bonded with a single layer.
- Si is an element that forms an Al—Si-based liquid phase and contributes to bonding. However, when the amount of Si added is less than 2.0% by mass, a sufficient amount of liquid phase cannot be generated, the liquid phase exudes less, and the bonding becomes incomplete.
- the amount of Si added exceeds 3.0% by mass, the amount of the liquid phase formed in the aluminum alloy material increases, so that the material strength during heating becomes extremely low, and it becomes difficult to maintain the shape of the structure. Therefore, the amount of Si added is defined as 2.0 to 3.0% by mass. Since the amount of the liquid phase that exudes is large and the heating temperature is high, the amount of the liquid phase required for heating is the amount of Si added or the joining required according to the structure of the structure to be manufactured. It is desirable to adjust the heating temperature.
- Fe has the effect of slightly dissolving in the matrix to improve the strength, and also has the effect of dispersing as crystallization and precipitates to prevent a decrease in strength particularly at high temperatures.
- the Fe addition amount is less than 0.01% by mass, not only the above-mentioned effect is small, but also it is necessary to use a high-purity bullion, which increases the cost.
- the amount of Fe added exceeds 0.50% by mass, a coarse intermetallic compound is generated during casting, which causes a problem in manufacturability.
- the corrosion resistance is lowered.
- the amount of Fe added is set to 0.01 to 0.50% by mass.
- Mn forms Al-Mn-Si-based, Al-Mn-Fe-Si-based, and Al-Mn-Fe-based intermetallic compounds together with Si and Fe, and acts as dispersion strengthening, or is contained in the aluminum matrix. It is an important additive element that dissolves in solid form and enhances its strength by strengthening the solid solution. When the amount of Mn added exceeds 1.5% by mass, a coarse intermetallic compound is likely to be formed and the corrosion resistance is lowered. On the other hand, if the amount of Mn added is less than 0.8% by mass, the above effect is insufficient. Therefore, the amount of Mn added is set to 0.8 to 1.5% by mass or less.
- the aluminum alloy material produced by the production method according to the present invention contains a predetermined amount of Si, Fe and Mn as essential elements in order to improve the deformation resistance during joint heating. Then, in order to further improve the strength, one or more selected from a predetermined amount of Zn, Cu, Zr and Ti may be further added as a selective additive element.
- Addition of Zn is effective in improving corrosion resistance due to sacrificial anticorrosion action.
- Zn is almost uniformly solid-solved in the matrix, but when a liquid phase is formed, it dissolves in the liquid phase and the Zn of the liquid phase is concentrated. When the liquid phase exudes to the surface, the Zn concentration in the exuded portion increases, so that the corrosion resistance is improved by the sacrificial anode action.
- the aluminum alloy material of the present invention is applied to a heat exchanger, by using the aluminum alloy material of the present invention for fins, it is possible to exert a sacrificial anticorrosion action for anticorrosion of tubes and the like.
- the amount of Zn added exceeds 2.0% by mass, the corrosion rate becomes high and the self-corrosion resistance decreases. Therefore, the amount of Zn added is set to 2.0% by mass or less.
- Cu is an additive element that dissolves in the matrix to improve its strength. If the amount of Cu added exceeds 0.50% by mass, the corrosion resistance is lowered. On the other hand, if the amount of Cu added is less than 0.05% by mass, the above effect is insufficient. Therefore, the amount of Cu added is set to 0.05 to 0.50% by mass. It was
- Zr is precipitated as an Al—Zr-based intermetallic compound and exerts the effect of improving the strength after bonding by strengthening the dispersion. Further, the Al—Zr-based intermetallic compound acts on the coarsening of crystal grains during heating. When the addition amount exceeds 0.30% by mass, it becomes easy to form a coarse intermetallic compound, and the plastic workability is lowered. Therefore, the amount of Zr added is set to 0.30% by mass or less. The preferable amount of Zr added is 0.05 to 0.30% by mass.
- Ti is dissolved in the matrix to improve the strength, and is distributed in layers to prevent the progress of corrosion in the plate thickness direction. If the amount of Ti added exceeds 0.30% by mass, coarse crystallization is generated, which impairs moldability and corrosion resistance. Therefore, the amount of Ti added is set to 0.30% by mass or less. The preferable amount of Ti added is 0.01 to 0.30% by mass.
- a predetermined amount of Mg, One or more selected from Ni, Cr, V, Sr, Bi, Na and Ca may be further added as a selective additive element.
- Such elements include Mg: 0.3% or less, Ni: 0.3% or less, Cr: 0.3% or less, V: 0.3% or less, Sr: 0.1% or less, Bi: 0. One or more of 3% or less, Na: 0.1% or less, Ca: 0.05% or less is added as needed.
- These trace elements can improve the bondability by finely dispersing Si particles, improving the fluidity of the liquid phase, and the like. If these trace elements are less than the above-mentioned preferable specified range, the effects of fine dispersion of Si particles and improvement of fluidity of the liquid phase may be insufficient. Further, if the specified range is exceeded, adverse effects such as deterioration of corrosion resistance will occur.
- the twin-roll continuous casting machine of the present embodiment includes a pair of water-cooled twin rolls 5a and 5b arranged one above the other with a predetermined roll gap 6, and a gutter 8 for holding the molten aluminum alloy 1.
- the nozzle tip 4 for receiving the molten aluminum alloy 1 supplied from the gutter 8 is provided at one end of the gutter 8, is arranged vertically on the tip of the nozzle tip 4, and rotates at a peripheral speed v (mm / min).
- the twin rolls (upper roll 5a, lower roll 5b) are in sliding contact with each other.
- the roll diameters of the upper roll 5a and the lower roll 5b are D (mm).
- Si 2.00 to 3.00% by mass
- Fe 0.01 to 0.50% by mass
- Mn 0.80 to 1.50% by mass
- Zn 0.5 to 2.0 by mass.
- Cu 0.05 to 0.50% by mass
- Zr 0.05 to 0.30% by mass
- Ti 0.01 to 0.30% by mass.
- the molten aluminum alloy 1 composed of the balance Al and the unavoidable impurities is housed in the gutter 8.
- the molten metal 1 housed in the gutter 8 is supplied between the twin rolls 5a and 5b rotating at a peripheral speed v (mm / min) through the nozzle tip 4.
- the molten metal temperature needs to be controlled to be 20 to 80 ° C. higher than the liquidus temperature of the aluminum alloy material.
- the molten metal 1 of the aluminum alloy material comes into contact with the water-cooled twin rolls 5a and 5b and begins to solidify, and finally becomes an aluminum alloy material having a plate thickness of t (mm).
- the plate thickness is cast in the range of 3 to 12 mm.
- the condition is that the relationship between the roll diameter D (mm) and the roll peripheral speed v (mm / min) at the time of casting is the equation (1).
- Aluminum alloy material containing Si: 2.46% by mass, Fe: 0.196% by mass, Mn: 1.21% by mass, and further containing Zn: 1.483% by mass and Cu: 0.024% by mass. was manufactured so that the plate thickness was 6 to 7 mm by continuous double-roll casting shown in the above-described embodiment.
- Table 2 shows an outline of Examples and Comparative Examples. In Table 2, in addition to the casting conditions, the L value by numerical analysis is also shown, and the result of the presence or absence of centerline segregation by observing the cross-sectional structure of the actually cast plate material is also shown.
- Example (No. 1) when casting was performed at a casting temperature of 660 ° C., a roll diameter of 485 mm, and a roll peripheral speed of 500 mm / min, no centerline segregation was observed. In this case, the distance L obtained by the numerical analysis was 15.63 mm. The same result was obtained in Example (No. 2) in which only the casting temperature was changed from Example (No. 1).
- Comparative Example (No. 5) when casting was performed at a casting temperature of 660 ° C., a roll diameter of 485 mm, and a roll peripheral speed of 640 mm / min, centerline segregation occurred remarkably. The same result was obtained in Comparative Example (No. 6) in which only the casting temperature was changed from Comparative Example (No. 5).
- FIGS. 4a and 4b are cross-sectional tissue observation photographs of Example (No. 1) and Comparative Example (No. 5).
- the horizontal direction of the paper surface in FIGS. 4a and 4b corresponds to the casting direction, and the vertical direction of the paper surface corresponds to the plate thickness direction.
- No centerline segregation was confirmed in Example (No. 1) of FIG. 4a, and remarkable centerline segregation was confirmed in Comparative Example (No. 5) of FIG. 4b.
- the distance L when casting is performed under various casting conditions for an aluminum alloy material having the same chemical composition as in Examples and Comparative Examples is shown as a calculation example. Since the casting conditions of the calculation examples (No. 7 to 10) are the conditions that the distance L is 20 mm or less, it is considered that the center line segregation can be reduced. On the other hand, since the casting conditions of the calculation examples (No. 11 to 19) are conditions in which the distance L is larger than 20 mm, it is considered that the centerline segregation becomes remarkable.
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Abstract
Description
双ロールによって冷却される過程で、溶融金属の凝固が進むにつれて、凝固した固相中で過飽和に固溶した溶質元素の一部が、固相側から凝固界面を通じて液相側に排出され、凝固界面付近の樹脂状晶間に濃化する偏析現像が発生する。
これにより、最終凝固完了位置である板材の厚さ中心部(板厚中心部)では溶質元素が濃化する中心線偏析が発生し、同部では凝固収縮による空隙などの鋳造欠陥も発生する不具合がある。
SiはAl-Si系の液相を生成し、接合に寄与する元素である。ただし、Si添加量が2.0質量%未満の場合は充分な量の液相を生成することができず、液相の染み出しが少なくなり、接合が不完全となる。一方、Si添加量が3.0質量%を超えるとアルミニウム合金材中の液相の生成量が多くなるため、加熱中の材料強度が極端に低下し、構造体の形状維持が困難となる。従って、Si添加量を2.0~3.0質量%と規定する。なお、染み出す液相の量は体積が大きく、加熱温度が高いほど多くなるので、加熱時に必要とする液相の量は、製造する構造体の構造に応じて必要となるSi添加量や接合加熱温度を調整することが望ましい。
2…アルミニウム合金の液相線温度位置
3…アルミニウム合金の固相線温度位置
4…ノズルチップ
5…双ロール(5a:上ロール、5b:下ロール)
6…ロールギャップ
7…アルミニウム合金板材
8…樋
L…板厚中心部の液相線温度位置-固相線温度位置間の距離(mm)
D…ロール直径(mm)
v…ロール周速(mm/min)
t…板厚(mm)
Claims (4)
- 2.00~3.00質量%のSiと0.01~0.50質量%のFeと0.80~1.50質量%のMnとを含有する単層で加熱接合機能を有するアルミニウム合金材の製造方法であって、
下記の(C1)式を満足する直径D(mm)のロールを周速v(mm/min)で回転させることによって厚さが3~12mmの板材を形成する双ロール鋳造式の連続鋳造を行う鋳造工程を含む、
アルミニウム合金材の製造方法。
0.057*v+0.0016*D≦33.54 ・・(C1) - 鋳造時の溶湯温度を液相線温度より20~80℃だけ高温とする、
請求項1に記載のアルミニウム合金材の製造方法。 - 前記直径Dと前記周速vは下記の(C2)式を満足する、
請求項1または請求項2に記載のアルミニウム合金材の製造方法。
0.057*v+0.0016*D≦29.54 ・・(C2) - 前記アルミニウム合金材は、2.00~3.00質量%のSiと0.01~0.50質量%のFeと0.80~1.50質量%のMnとを必須的に含有し、0.50~2.00質量%のZnと0.05~0.50質量%のCuと0.05~0.30質量%のZrと0.01~0.30質量%のTiの少なくとも一種を選択的に含有し、残部がAlと不可避的不純物とからなる、
請求項1~請求項3のいずれか一項に記載のアルミニウム合金材の製造方法。
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JP2022571613A JPWO2022138806A1 (ja) | 2020-12-25 | 2021-12-23 | |
EP21910945.1A EP4269640A1 (en) | 2020-12-25 | 2021-12-23 | Method for producing single-layer aluminum alloy material which exhibits heat-welding function |
CN202180085959.8A CN116710583A (zh) | 2020-12-25 | 2021-12-23 | 单层且具有加热接合功能的铝合金材料的制造方法 |
US18/256,354 US20240102134A1 (en) | 2020-12-25 | 2021-12-23 | Method of producing aluminum alloy material having thermal bonding function in single layer |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH10102178A (ja) * | 1996-09-25 | 1998-04-21 | Furukawa Electric Co Ltd:The | Al−Mg−Si系合金の直接鋳造圧延板とその製造方法 |
JP2007268547A (ja) * | 2006-03-30 | 2007-10-18 | Kobe Steel Ltd | アルミニウム合金鋳造板の製造方法 |
JP2017025378A (ja) | 2015-07-22 | 2017-02-02 | 三菱アルミニウム株式会社 | 熱交換器用Al−Mn系アルミニウム合金材およびその製造方法 |
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- 2021-12-23 WO PCT/JP2021/047827 patent/WO2022138806A1/ja active Application Filing
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Patent Citations (3)
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JPH10102178A (ja) * | 1996-09-25 | 1998-04-21 | Furukawa Electric Co Ltd:The | Al−Mg−Si系合金の直接鋳造圧延板とその製造方法 |
JP2007268547A (ja) * | 2006-03-30 | 2007-10-18 | Kobe Steel Ltd | アルミニウム合金鋳造板の製造方法 |
JP2017025378A (ja) | 2015-07-22 | 2017-02-02 | 三菱アルミニウム株式会社 | 熱交換器用Al−Mn系アルミニウム合金材およびその製造方法 |
Non-Patent Citations (1)
Title |
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KUROSAKI, TOMOHITO; MURASE, TAKASHI; TERAYAMA, KAZUKO; BEKKI, YOICHIRO; NINOMIYA, JUNJI; NIIKURA, AKIO: "Influences of the Manganese Contents and the Brazing Conditions on the Brazeability and the Shape Retainability of the Al-Si Based Alloy Sheets for Brazing", UACJ TECHNICAL REPORT, vol. 7, no. 1, 30 June 2021 (2021-06-30), Japan, pages 30 - 36, XP009537764, ISSN: 2189-1222 * |
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JPWO2022138806A1 (ja) | 2022-06-30 |
CN116710583A (zh) | 2023-09-05 |
US20240102134A1 (en) | 2024-03-28 |
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