JP3209346B2 - Method for producing aluminum and aluminum alloy thin plate for plate fin of heat exchanger having excellent flaring workability - Google Patents
Method for producing aluminum and aluminum alloy thin plate for plate fin of heat exchanger having excellent flaring workabilityInfo
- Publication number
- JP3209346B2 JP3209346B2 JP06785491A JP6785491A JP3209346B2 JP 3209346 B2 JP3209346 B2 JP 3209346B2 JP 06785491 A JP06785491 A JP 06785491A JP 6785491 A JP6785491 A JP 6785491A JP 3209346 B2 JP3209346 B2 JP 3209346B2
- Authority
- JP
- Japan
- Prior art keywords
- flaring
- plate
- workability
- aluminum
- heat exchanger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Metal Rolling (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、熱交換器のプレートフ
ィン用アルミニウム及びアルミニウム合金薄板の製造方
法に係り、より詳細には、熱間圧延、冷間圧延加工を受
けた後に各種熱交換器のプレートフィン材に適用するに
最適な高成形性（プレス成形性、コルゲート加工性、リ
フレアー加工性等）に優れたアルミニウム及びアルミニ
ウム合金薄板の製造方法に関するものである。BACKGROUND OF THE INVENTION The present invention relates to a plate for a heat exchanger.
It relates to a method for manufacturing a fin for aluminum and aluminum alloy sheet and, more particularly, hot rolling, optimal high <br/> to apply to the plate fin material for various heat exchanger after receiving cold rolling The present invention relates to a method for producing aluminum and aluminum alloy thin plates having excellent formability (press formability, corrugating workability, flaring workability, etc.).
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】熱交換
器は、従来より、ルームエアコン、パッケージエアコ
ン、カーエアコン及びラジェーター等を代表として、種
々の分野に利用されている。2. Description of the Related Art Heat exchangers have been used in various fields, such as room air conditioners, package air conditioners, car air conditioners, and radiators.
【０００３】これら熱交換器の素材としては、アルミニ
ウム又はアルミニウム合金板が多用されている。これら
の素材は、熱間圧延、冷間圧延により製造した後、成形
加工によって最終製品とされるが、熱交換器の中でもル
ームエアコン用に使用されるプレートフィン成形加工方
法においては、図１及び図２に示す最終工程でリフレア
ー加工が施され、この工程での加工性(割れ発生程度、
度合い)は最終製品での熱性能に大きく影響を及ぼす材
料特性である。[0003] As a material for these heat exchangers, aluminum or aluminum alloy plates are frequently used. These materials are manufactured by hot rolling and cold rolling, and then are formed into final products by forming. In a plate fin forming method used for a room air conditioner in a heat exchanger, FIG. 1 and FIG. In the final step shown in FIG. 2, the flaring is performed.
Is a material property that greatly affects the thermal performance of the final product.
【０００４】近年、熱交換器の複雑形状化、小型軽量化
の目的から、使用素材であるアルミニウム及びアルミニ
ウム合金板の薄肉化が進められるに伴い、リフレアー加
工性が低下するという問題が生じてきている。[0004] In recent years, with the aim of making the heat exchanger complex and reducing the size and weight, there has been a problem that as the materials used, such as aluminum and aluminum alloy plates, are being made thinner, the flaring processability is reduced. I have.
【０００５】そこで、上記のような薄肉材料において
も、充分なリフレアー加工性を確保するための対策とし
て、合金素材の成分組成の改良、素材の製造条件の
改善等が検討されている。しかしながら、必ずしも満足
し得る結果が得られていないのが実情である。[0005] In order to ensure sufficient flaring workability even for the above-mentioned thin materials, improvement of the composition of the alloy material and improvement of the manufacturing conditions of the material have been studied. However, in fact, satisfactory results have not been obtained.
【０００６】本発明は、かゝる要請に応えるべくなされ
たものであって、熱交換器用アルミニウム及びアルミニ
ウム合金素材の高強度化、薄肉化に対して優れた成形
性、特にリフレアー加工性が得られる方法を提供するこ
とを目的とするものである。SUMMARY OF THE INVENTION The present invention has been made to meet such a demand, and provides excellent formability, particularly flaring workability, for increasing strength and thinning of aluminum and aluminum alloy materials for heat exchangers. It is intended to provide a method that can be used.
【０００７】[0007]
【課題を解決するための手段】前記課題を解決するた
め、本発明者は、従来より用いられているフィン用アル
ミニウム素材の性状について検討したところ、比較的粗
度の粗い表面形態を有する板が使用されており、概ね、
フィン素材の表面平均粗さが０.２５〜０.４０μmであ
った。In order to solve the above-mentioned problems, the present inventors have studied the properties of conventionally used aluminum materials for fins and found that a plate having a relatively rough surface morphology was obtained. Used, generally
The surface average roughness of the fin material was 0.25 to 0.40 μm.
【０００８】そこで、本発明者は、この実体を考慮して
リフレアー加工性を向上し得る方策について鋭意研究を
重ねた結果、熱交換器等におけるリフレアー加工におい
て、熱間圧延により得たホットコイル組織を微細にコン
トロールし、一定のホットコイル厚さを確保することに
よって延性を向上させ、かつ、冷間圧延加工時に素材表
面をある程度平滑化させると、加工時の摩擦抵抗が少な
く、リフレアー加工性を向上できることを見い出し、こ
こに本発明をなしたものである。Therefore, the present inventor has conducted intensive studies on measures to improve the flared workability in consideration of this substance, and as a result, found that the hot coil structure obtained by hot rolling in the flared work in a heat exchanger or the like. By controlling the fineness of the material and improving the ductility by securing a constant hot coil thickness, and by smoothing the material surface to some extent during cold rolling, the friction resistance during processing is small, It has been found that the present invention can be improved, and the present invention has been made here.
【０００９】すなわち、本発明は、熱交換器のプレート
フィン用アルミニウム及びアルミニウム合金薄板を製造
するに際し、熱間圧延の終了温度を２５０〜２７０℃の
範囲にコントロールし、この熱間圧延により得たホット
コイル厚さが２．６ｍｍ以上３．４ｍｍ未満のものにつ
き、表面粗さを調整した圧延ロールを用いた冷間圧延に
より、表面の粗さＲａを０．０５〜０．２０μｍとした
薄板を得ることを特徴とするリフレアー加工性に優れた
熱交換器のプレートフィン用アルミニウム及びアルミニ
ウム合金薄板の製造方法を要旨とするものである。That is, the present invention relates to a plate for a heat exchanger.
In producing aluminum and aluminum alloy sheets for fins, the end temperature of hot rolling is controlled in the range of 250 to 270 ° C., and the thickness of the hot coil obtained by this hot rolling is from 2.6 mm to less than 3.4 mm. The surface roughness Ra was adjusted to 0.05 to 0.20 μm by cold rolling using a roll having adjusted surface roughness .
Excellent flaring properties characterized by obtaining a thin plate
A gist of the present invention is a method for producing aluminum and aluminum alloy sheets for plate fins of a heat exchanger .
【００１０】以下に本発明を更に詳述する。Hereinafter, the present invention will be described in more detail.
【００１１】[0011]
【作用】本発明は、アルミニウム又はアルミニウム合金
について、特定の条件での熱間圧延→冷間圧延により素
材を製造するものであり、この素材を、従来と同様、図
１に示すドロー方式、或いは図２に示すドローレス方式
等により成形して製品とする。ドロー方式及びドローレ
ス方式のいずれの成形方式においても、最終工程はリフ
レアー工程が採用される。According to the present invention, a material is produced from aluminum or an aluminum alloy by hot rolling → cold rolling under specific conditions. This material is produced by a draw method shown in FIG. A product is formed by a drawless method shown in FIG. In any of the draw method and the drawless method, the final step employs a flaring step.
【００１２】まず、本発明では、熱間圧延時の終了温度
を低く２５０〜２７０℃にコントロールし、得られたホ
ットコイルについて、一定厚さ（２.６mm以上３.４mm未
満）を確保することにより、延性を確保する。これは、
ホットコイル厚さが２.６mm以上３.４mm未満の場合、熱
間圧延終了温度が２７０℃より高いと組織が粗粒化し、
プレス加工時にリフレアー加工割れが生じるが、２５０
〜２７０℃であれば、満足のできるリフレアー加工性が
得られることが判明したためである。First, in the present invention, the end temperature during hot rolling is controlled to a low value of 250 to 270 ° C., and a constant thickness (2.6 mm or more and less than 3.4 mm) is obtained for the obtained hot coil. With this, ductility is ensured. this is,
When the hot coil thickness is 2.6 mm or more and less than 3.4 mm, the structure becomes coarse when the hot rolling end temperature is higher than 270 ° C.
Flare cracking occurs during pressing, but 250
This is because it has been found that satisfactory flare processability can be obtained when the temperature is up to 270 ° C.
【００１３】しかし、単にある一定の熱間圧延終了温度
を確保するだけでは、リフレアー加工性の向上は期待で
きない。従来の素材(冷延板)は、前述の如く比較的粗い
表面粗さであることに鑑み、表面粗さＲaを小さくして
みたところ、Ｒaが０.２０μm以下の場合にリフレアー
加工性が向上することが判明した。However, simply securing a certain hot-rolling termination temperature cannot be expected to improve flaring workability. Considering that the conventional material (cold rolled sheet) has a relatively rough surface roughness as described above, the surface roughness Ra was reduced. When Ra was 0.20 μm or less, the reflaring processability was improved. It turned out to be.
【００１４】このように、熱間圧延終了温度及び素材の
表面粗さを小さくすることによってリフレアー加工性が
向上する理由は、ホットコイルの組織が微細であると、
冷間圧延時の加工率の増加に伴い高延性が確保でき、か
つ表面の凹凸によるノッチ効果が少なくなるためと考え
られる。特にフィンのリフレアー加工のように、薄板
で、しかもカラーの先端部は局部的に２００〜３００％
の伸び加工を受ける厳しい加工ではその効果が大きい。[0014] As described above, the reason why the hot rolling end temperature and the surface roughness of the raw material are reduced to improve the flared workability is that the microstructure of the hot coil is small.
It is considered that high ductility can be ensured with an increase in the working ratio at the time of cold rolling, and the notch effect due to unevenness on the surface is reduced. In particular, as in the case of fin flaring, it is a thin plate, and the tip of the collar is locally 200% to 300%.
The effect is great in severe processing that undergoes elongation processing.
【００１５】しかし、Ｒaが０.２０μmを超えると、そ
の近傍では、従来の素材よりはリフレアー加工性が若干
向上するものの、向上度合いが十分でない。一方、０.
０５μm未満では、リフレアー加工性は向上するもの
の、圧延時に圧延スピードを上げると、コイルの巻きず
れが生じる等、著しく生産性が低下するので好ましくな
い。However, when Ra exceeds 0.20 μm, the flaring processability is slightly improved in the vicinity of Ra in comparison with conventional materials, but the degree of improvement is not sufficient. On the other hand, 0.
If the thickness is less than 05 μm, the flared workability is improved, but if the rolling speed is increased during rolling, productivity is remarkably reduced, for example, coil winding deviation occurs, which is not preferable.
【００１６】なお、平均粗さをＲaで０.０５〜０.２０
μmとする手段は、特に限定されない。また、本発明に
おけるアルミニウム合金の成分組成、熱処理状態につい
ても特に限定されない。更に、素材板（冷延板）の厚み
も特に限定されず、厚肉材、薄肉材を問わないが、近時
の薄肉化傾向に鑑みて、薄肉の板に適用することが好ま
しい。The average roughness Ra is 0.05 to 0.20.
Means for setting μm is not particularly limited. Further, the component composition and heat treatment state of the aluminum alloy in the present invention are not particularly limited. Further, the thickness of the material plate (cold rolled plate) is not particularly limited, and it does not matter whether it is a thick material or a thin material. However, it is preferable to apply the material to a thin plate in view of the recent tendency to reduce the thickness.
【００１７】次に本発明の実施例を示す。Next, an embodiment of the present invention will be described.
【００１８】[0018]
【実施例】現在エアコン用フィンの素材として使用され
ているアルミニウム合金Ａ１１００Ｐ−Ｈ２６材、０.
１００mm厚の板について、DESCRIPTION OF THE PREFERRED EMBODIMENTS Aluminum alloy A1100P-H26 currently used as a material for air conditioner fins, 0.1 mm
For a 100mm thick plate
【表１】 に示すように熱間圧延終了温度、ホットコイル厚さ、表
面粗さＲaを種々変更して、リフレアー加工性について
調査した。その結果を表１に併記する。なお、素材の化
学成分及び製造工程は同一である。板の表面粗さＲa
は、一定粗さを有する圧延用表面研削砥石により圧延ロ
ール表面の粗さを調整(Ｒa０.０３〜０.１５μm)した圧
延ロールを用いた冷汗圧延により、調整した。また、リ
フレアー加工はドローレスフィン加工機にて加工した。[Table 1] The hot rolling end temperature, the hot coil thickness and the surface roughness Ra were variously changed as shown in FIG. The results are also shown in Table 1. In addition, the chemical components of the material and the manufacturing process are the same. Plate surface roughness Ra
Was adjusted by cold sweat rolling using a roll in which the roughness of the roll surface was adjusted (Ra 0.03 to 0.15 μm) with a rolling surface grinding wheel having a constant roughness. The flaring was performed by a drawless fin processing machine.
【００１９】表１から明らかなように、本発明材は、比
較材に比らべ、強度等の機械的性質はほぼ同一であるに
も拘わらず、リフレアー加工性が向上している。As is evident from Table 1, the material of the present invention has improved reworkability even though the mechanical properties such as strength are almost the same as compared with the comparative material.
【００２０】一方、比較材Ｎｏ．１〜Ｎｏ．２はホット
コイル厚さ、表面粗さが本発明範囲内であるが、熱間圧
延終了温度が高いため、比較材Ｎｏ．３は熱間圧延終了
温度、表面粗さが本発明範囲内であるが、ホットコイル
厚さが薄いため、また比較材Ｎｏ．７〜Ｎｏ．８はホッ
トコイル厚さが本発明範囲内であるが、熱間圧延終了温
度が高く、かつ表面粗さが粗いため、Ｎｏ．９は表面粗
さが本発明範囲内であるが、熱間圧延終了温度が高く、
かつホットコイル厚さが厚いため、いずれの比較例も、
リフレアー加工性が劣っている。On the other hand, the comparative material No. 1 to No. 2 hot coils thickness, the surface roughness is within the scope the present invention, the hot pressure
Since the rolling end temperature is high, the comparative material No. No. 3 has the hot-rolling end temperature and the surface roughness within the range of the present invention, but has a small hot coil thickness . 7-No. No. 8 has a hot coil thickness within the range of the present invention, but has a high hot rolling end temperature and a rough surface roughness . 9 is the surface roughness
Is within the scope of the present invention, but the hot rolling end temperature is high,
In addition, since the hot coil thickness is large , both comparative examples
Inferior flaring workability.
【００２１】なお、本発明材はプレス成形性、コルゲー
ト加工性も優れていることを確認した。It was confirmed that the material of the present invention was excellent in press formability and corrugation workability.
【００２２】[0022]
【発明の効果】以上詳述したように、本発明によれば、
熱交換器のプレートフィンの素材として用いられるアル
ミニウム及びアルミニウム合金薄板の製造時、熱間圧延
終了温度を低く、ホットコイル厚さを厚めに確保し、か
つ、素材製品表面を適切に平滑化させるので、プレス加
工性、コルゲート加工性、リフレアー加工性等の成形性
を向上させることができる。とりわけ、高強度で、か
つ、十分なリフレアー加工性を確保することができる。As described in detail above, according to the present invention,
During the production of aluminum and aluminum alloy sheets used as the material of the plate fins of the heat exchanger, the end temperature of hot rolling is low, the thickness of the hot coil is kept large, and the material product surface is appropriately smoothed. In addition, moldability such as press workability, corrugation workability, and flaring workability can be improved. In particular, a high-strength, or
In addition, sufficient flaring workability can be ensured.
【図１】プレートフィン材の成形工程のうち、ドロー方
式を示す図である。FIG. 1 is a view showing a draw method in a step of forming a plate fin material.
【図２】プレートフィン材の成形工程のうち、ドローレ
ス方式を示す図である。FIG. 2 is a view showing a drawless method in a step of forming a plate fin material.
【図３】リフレアー工程で発生する割れを示す説明図で
ある。FIG. 3 is an explanatory view showing cracks generated in a reflearing step.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｃ２２Ｆ 1/00 ６３０ Ｃ２２Ｆ 1/00 ６３０Ｋ ６５１ ６５１Ａ ６８３ ６８３ ６８５ ６８５Ｚ ６９４ ６９４Ａ ６９４Ｚ (58)調査した分野(Int.Cl.7，ＤＢ名) C22F 1/04 - 1/057 B21B 1/00 - 3/00 F28F 1/32 ──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. 7 identification symbol FI C22F 1/00 630 C22F 1/00 630K 651 651A 683 683 685 685Z 694 694A 694Z (58) Fields investigated (Int. Cl. 7 , (DB name) C22F 1/04-1/057 B21B 1/00-3/00 F28F 1/32
Claims (1)
ム及びアルミニウム合金薄板を製造するに際し、熱間圧
延の終了温度を２５０〜２７０℃の範囲にコントロール
し、この熱間圧延により得たホットコイル厚さが２．６
ｍｍ以上３．４ｍｍ未満のものにつき、表面粗さを調整
した圧延ロールを用いた冷間圧延により、表面の粗さＲ
ａを０．０５〜０．２０μｍとした薄板を得ることを特
徴とするリフレアー加工性に優れた熱交換器のプレート
フィン用アルミニウム及びアルミニウム合金薄板の製造
方法。1. In producing aluminum and aluminum alloy sheets for plate fins of a heat exchanger, the end temperature of hot rolling is controlled in the range of 250 to 270 ° C. Hot coil thickness is 2.6
mm or more and less than 3.4 mm, the surface roughness R is determined by cold rolling using a roll having adjusted surface roughness.
A plate for a heat exchanger having excellent flaring properties, wherein a thin plate having a of 0.05 to 0.20 μm is obtained.
A method for producing aluminum and aluminum alloy sheets for fins .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06785491A JP3209346B2 (en) | 1991-03-07 | 1991-03-07 | Method for producing aluminum and aluminum alloy thin plate for plate fin of heat exchanger having excellent flaring workability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06785491A JP3209346B2 (en) | 1991-03-07 | 1991-03-07 | Method for producing aluminum and aluminum alloy thin plate for plate fin of heat exchanger having excellent flaring workability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04280950A JPH04280950A (en) | 1992-10-06 |
| JP3209346B2 true JP3209346B2 (en) | 2001-09-17 |
Family
ID=13356956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06785491A Expired - Fee Related JP3209346B2 (en) | 1991-03-07 | 1991-03-07 | Method for producing aluminum and aluminum alloy thin plate for plate fin of heat exchanger having excellent flaring workability |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3209346B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106378358B (en) * | 2016-09-14 | 2018-11-09 | 广西南南铝加工有限公司 | A kind of production method of large winding diameter, the high thin volume of flatness aluminium alloy width |
-
1991
- 1991-03-07 JP JP06785491A patent/JP3209346B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04280950A (en) | 1992-10-06 |
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