JPH046251A - Production of aluminum or aluminum alloy strip having uniform distribution of metallic structure - Google Patents
Production of aluminum or aluminum alloy strip having uniform distribution of metallic structureInfo
- Publication number
- JPH046251A JPH046251A JP10660990A JP10660990A JPH046251A JP H046251 A JPH046251 A JP H046251A JP 10660990 A JP10660990 A JP 10660990A JP 10660990 A JP10660990 A JP 10660990A JP H046251 A JPH046251 A JP H046251A
- Authority
- JP
- Japan
- Prior art keywords
- rolling
- hot
- less
- aluminum
- finish rolling
- 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.)
- Pending
Links
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 22
- 229910052782 aluminium Inorganic materials 0.000 title claims description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims description 15
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 238000009827 uniform distribution Methods 0.000 title abstract 2
- 238000005096 rolling process Methods 0.000 claims abstract description 63
- 238000005098 hot rolling Methods 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 10
- 229910052802 copper Inorganic materials 0.000 claims abstract description 9
- 238000003303 reheating Methods 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 238000009826 distribution Methods 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000010731 rolling oil Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract 2
- 239000006185 dispersion Substances 0.000 abstract 1
- 230000000977 initiatory effect Effects 0.000 abstract 1
- 239000010687 lubricating oil Substances 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 description 14
- 239000000956 alloy Substances 0.000 description 14
- 238000001953 recrystallisation Methods 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 229910004072 SiFe Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Metal Rolling (AREA)
Abstract
Description
【発明の詳細な説明】
[産業上の利用分野]
本発明は器物、建材などの深絞り用やアルマイトのよう
な表面処理用に適した均一な金属組織分布を有するアル
ミニウム又はアルミニウム合金帯板の製造方法に関する
ものである。Detailed Description of the Invention [Industrial Field of Application] The present invention is an aluminum or aluminum alloy strip having a uniform metallographic distribution suitable for deep drawing of objects, building materials, etc. and for surface treatment such as alumite. This relates to a manufacturing method.
[従来の技術〕
通常のアルミニウム連鋳塊の熱間圧延は、9〜29パス
の圧延パス回数で行われる熱間粗圧延と、その後連続し
て行われる熱間仕上圧延で構成される。熱間仕上圧延後
コイルに巻取られる。[Prior Art] Conventional hot rolling of continuous aluminum ingots consists of hot rough rolling carried out with 9 to 29 rolling passes, and then hot finishing rolling carried out continuously. After hot finish rolling, it is wound into a coil.
粗圧延開始温度は450〜500℃、仕上圧延終了温度
は300℃前後である。アルミニウム合金の再結晶温度
が250〜400℃であるために、この熱間圧延中にく
り返して起こる再結晶の進行度合いが、圧延された帯板
の機械的性質や結晶組織に起因する塑性異方性に影響を
及ぼす。又、同時に変化する合金成分の析出状態により
、化学溶解性、アルマイト性等が変化する。更に鋳塊を
熱間圧延する場合には長平方向、幅方向の温度ムラによ
って帯板内の再結晶の進行度合いが不均一になる。The rough rolling start temperature is 450 to 500°C, and the finish rolling end temperature is around 300°C. Since the recrystallization temperature of aluminum alloy is 250 to 400°C, the degree of progress of recrystallization that occurs repeatedly during hot rolling is due to plastic anisotropy caused by the mechanical properties and crystal structure of the rolled strip. Affects sexuality. Furthermore, chemical solubility, alumite properties, etc. change depending on the precipitation state of alloy components that change at the same time. Furthermore, when hot rolling an ingot, the degree of progress of recrystallization within the strip becomes uneven due to temperature unevenness in the longitudinal direction and the width direction.
その解決のために、これまでに圧延途中て水シヤワー等
を用いて強制冷却して再結晶の進行を遅らせる方法(特
公昭56−502号)や、具体的方法は明示されていな
いが、冷却を制御して圧延終了温度を調整する方法(特
開昭63224804号、特開昭64−83308号)
が提案されている。In order to solve this problem, a method has been proposed to delay the progress of recrystallization by forced cooling using a water shower or the like during rolling (Japanese Patent Publication No. 56-502), and although no specific method has been specified, cooling A method of adjusting the rolling end temperature by controlling
is proposed.
[発明が解決しようとする課題]
上記従来提案されている発明は、いずれも熱間粗圧延開
始温度が高く、圧延の途中で冷却して圧延温度を下げる
方法であるため、高温で行う圧延初期に生成する再結晶
粒が粗大化しやすい。 これを解決するために、熱間粗
圧延開始温度を低くする方法が提案されている(特開昭
59−179488号)。しかし、熱間仕上圧延終了温
度が低くなることが必然的で、水媒圧延油による潤滑不
良や腐食を生じる恐れがある。[Problems to be Solved by the Invention] In the above-mentioned conventionally proposed inventions, the hot rough rolling start temperature is high and the method involves cooling in the middle of rolling to lower the rolling temperature. The recrystallized grains that are formed tend to become coarse. In order to solve this problem, a method of lowering the hot rough rolling start temperature has been proposed (Japanese Patent Laid-Open No. 179488/1988). However, it is inevitable that the finishing temperature of hot finish rolling becomes low, which may cause poor lubrication or corrosion due to the water-borne rolling oil.
[課題を解決するための手段] 本発明は、下記3つの発明よりなる。[Means to solve the problem] The present invention consists of the following three inventions.
(1) S i十Fe : 1.5%以下、Cu:0
.5%以下、Mn:0.5%以下及びMg:1.0%以
下の各成分の1種以上を含み、残部は実質的にAlであ
るアルミニウム又はアルミニウム合金の鋳塊を熱間圧延
するに当り、350〜450℃に加熱後熱間粗圧延を開
始して、圧延途中の粗圧延と仕上圧延の間で300〜4
50℃に5℃/sec〜500℃/secの昇温速度で
再加熱し、熱間仕上圧延終了温度が250℃以下になる
ように水媒圧延油で冷却して仕上圧延し巻取る均一な金
属組織分布を有するアルミニウム又はアルミニウム合金
帯板の製造方法、
(2) S i 十F e : 1.5%以下、Cu
:0.5%以下、Mn:0.5%以下及びMg:1.0
%以下の各成分の1種以上を含み、残部は実質的にAl
であるアルミニウム又はアルミニウム合金の鋳塊を熱間
圧延するに当り、350〜450℃に加熱後熱間粗圧延
を開始して、圧延途中の粗圧延と仕上圧延の間で300
〜450℃に5℃/sec〜500℃/secの昇温速
度で再加熱し、仕上圧延終了後、帯板を巻取る直前に強
制冷却手段によって材料温度を250℃以下に冷却する
均一な金属組織分布を有するアルミニウム又はアルミニ
ウム合金帯板の製造方法、
(3) S i + F e : 1.5%以下、C
u:0.5%以下、Mn:0.5%以下及びMg:1.
0%以下の各成分の1種以上を含み、残部は実質的にA
1であるアルミニウム又はアルミニウム合金の鋳塊を熱
間圧延するに当り、350〜450℃に加熱後熱間粗圧
延を開始して、仕上圧延終了後、5℃/sec〜500
℃/secの昇温速度で300〜450℃に再加熱し、
強制冷却手段により材料温度を250℃以下に冷却して
巻取る均一な金属組織分布を有するアルミニウム又はア
ルミニウム合金基板の製造方法。(1) SiFe: 1.5% or less, Cu: 0
.. 5% or less, Mn: 0.5% or less, Mg: 1.0% or less, and the remainder is substantially Al. After heating to 350-450°C, hot rough rolling is started, and the rolling temperature is 300-450°C between rough rolling and finishing rolling.
Reheat to 50°C at a temperature increase rate of 5°C/sec to 500°C/sec, cool with water-borne rolling oil so that the finishing temperature of hot finish rolling is 250°C or less, finish roll it, and wind it into a uniform shape. Method for producing aluminum or aluminum alloy strip having metallographic distribution, (2) Si + Fe: 1.5% or less, Cu
: 0.5% or less, Mn: 0.5% or less, and Mg: 1.0
% or less of each component, and the remainder is substantially Al.
When hot rolling an ingot of aluminum or aluminum alloy, hot rough rolling is started after heating to 350 to 450°C, and the rolling time is 300°C between rough rolling and finishing rolling.
A uniform metal that is reheated to ~450°C at a temperature increase rate of 5°C/sec to 500°C/sec, and after finish rolling, the material temperature is cooled to 250°C or less by forced cooling means immediately before winding the strip. Method for manufacturing aluminum or aluminum alloy strip having texture distribution, (3) S i + Fe: 1.5% or less, C
u: 0.5% or less, Mn: 0.5% or less, and Mg: 1.
Contains 0% or less of one or more of each component, the remainder being substantially A
1. When hot rolling an ingot of aluminum or aluminum alloy, hot rough rolling is started after heating to 350 to 450°C, and after finish rolling, rolling is performed at 5°C/sec to 500°C.
Reheat to 300-450°C at a temperature increase rate of °C/sec,
A method for manufacturing an aluminum or aluminum alloy substrate having a uniform metal structure distribution, which comprises cooling the material temperature to 250° C. or lower using forced cooling means and then winding the material.
本発明において、350〜450℃で熱間粗圧延を開始
する理由は、350℃未満ではスラブからの圧延が困難
であるためであり、450℃を越える場合、熱間粗圧延
時の初期に生成する再結晶粒が粗大化しやすく、成形時
にフローマークが発生しやすい。In the present invention, the reason why hot rough rolling is started at 350 to 450°C is that rolling from a slab is difficult at temperatures below 350°C, and when the temperature exceeds 450°C, formation of Recrystallized grains tend to become coarser, and flow marks tend to occur during molding.
再加熱温度は300〜450℃が良い。再加熱は材料を
微細均一に再結晶させることが目的である。その温度は
加熱速度、保持時間と関係する。The reheating temperature is preferably 300 to 450°C. The purpose of reheating is to recrystallize the material finely and uniformly. The temperature is related to heating rate and holding time.
保持時間は特に定めないが、生産ラインとの関係でなる
べく短い方がよい。長くても10秒である。Although the holding time is not particularly determined, it is better to keep it as short as possible in relation to the production line. It is 10 seconds at most.
再加熱速度は5℃/sec〜500℃/secがよい。The reheating rate is preferably 5°C/sec to 500°C/sec.
5℃/secより遅いと結晶粒が粗大化しやすく、又、
生産性が劣る。500℃/secより速い場合、均一な
組織を得ることは難しい。If it is slower than 5°C/sec, crystal grains tend to become coarser, and
Productivity is poor. When the speed is faster than 500° C./sec, it is difficult to obtain a uniform structure.
熱間仕上圧延終了温度を250℃以下とする理由は、2
50℃以下の場合、冷却速度の差による組織差を生じる
ことがないからである。The reason for setting the finishing temperature of hot finish rolling to 250°C or less is 2.
This is because when the temperature is 50° C. or lower, no structural difference occurs due to a difference in cooling rate.
Si+Feを1.5%以下、Cuを0.5%以下、Mn
を0,5%以下、Mgを1.0%以下に限定する理由は
、器物用としての絞り性を考慮したものであり、これら
の成分量を越えて添加した場合絞り性が劣る。Si+Fe 1.5% or less, Cu 0.5% or less, Mn
The reason why Mg is limited to 0.5% or less and Mg to 1.0% or less is to take into consideration the drawability for use in utensils, and if the amounts of these components are exceeded, the drawability will be poor.
[作 用コ
熱間粗圧延初期の再結晶粒粗大化を防止するために、熱
間粗圧延開始温度をできるだけ低くし、熱間仕上圧延終
了温度は潤滑不良や腐食が起こらないように十分高くし
、かつ、再結晶の進行度合を帯板内で均一にすることで
、塑性異方性が良好で、かつ機械的性質のバラツキが小
さい帯板を得る。同時に合金成分の析出状態を均一化で
き、化学的性質を均一化する。[Function] In order to prevent coarsening of recrystallized grains in the initial stage of hot rough rolling, the hot rough rolling start temperature is set as low as possible, and the hot finish rolling end temperature is set high enough to prevent poor lubrication and corrosion. In addition, by making the progress of recrystallization uniform within the strip, a strip with good plastic anisotropy and small variations in mechanical properties can be obtained. At the same time, the precipitation state of the alloy components can be made uniform, and the chemical properties can be made uniform.
[実施例] 以下、本発明の詳細な説明する。[Example] The present invention will be explained in detail below.
実施に際しては、研究所の小型圧延機を用い、本発明の
効果を確認した。その方法は次のとおりである。During the implementation, a small rolling mill at the research institute was used to confirm the effects of the present invention. The method is as follows.
表1に示す成分を有するN011〜5のアルミニウム合
金鋳塊を、半連続鋳造で2501io+t X500■
W X 500m1のインゴットに鋳込んだ。An aluminum alloy ingot of N011 to 5 having the components shown in Table 1 was semi-continuously cast to 2501io+tX500■
It was cast into an ingot of W x 500m1.
N011合金は1100相当のもので、N002合金は
No、1合金のFeを1%としたもの、No、3合金は
No、1合金のCuを0.4%としたもの、No、4合
金はNo、1合金のMnを0.1%としたもの、No、
5合金はN011合金のMgを0.85%としたもので
ある。N011 alloy is equivalent to 1100, N002 alloy is No. 1 alloy with 1% Fe, No. 3 alloy is No. 1 alloy with 0.4% Cu, No. 4 alloy is No. 1 alloy with 0.4% Cu. No. 1 alloy with 0.1% Mn, No.
Alloy No. 5 is the N011 alloy with Mg content of 0.85%.
得られたインゴットを200IIIltとなるよう片面
25m52ずつ面側し均質化処理した後、400℃に加
熱し、熱間圧延を開始した。熱間仕上圧延終了温度を3
00℃、熱間仕上圧延終了板厚を2■■とした。熱間仕
上圧延後に高周波誘導加熱炉により表2に示す条件で再
加熱して、再結晶させ、250℃以下にミスト及び水槽
を通すことで冷却してから抜取った。The obtained ingot was homogenized by 25 m52 on each side so as to have a thickness of 200 IIIt, and then heated to 400° C. and hot rolling was started. Hot finish rolling end temperature 3
00° C., and the plate thickness after hot finish rolling was 2■■. After hot finish rolling, it was reheated in a high-frequency induction heating furnace under the conditions shown in Table 2 to recrystallize it, cooled to 250° C. or lower by passing through a mist and water bath, and then extracted.
熱間圧延のこれらの工程(熱間粗圧延から巻き取りまで
)を連続して行った。These steps of hot rolling (from rough hot rolling to winding) were performed continuously.
このようにして作製した合金NO31〜5のアルミニウ
ム合金帯板コイルと、従来法を適用した合金No、1〜
5のアルミニウム合金帯板コイルについて、1.5■’
まで冷間圧延した。これらの冷間圧延板のコイル長手方
向、幅方向における強度、耳率、アルマイト後の色調を
調べた。Aluminum alloy strip coils of alloy Nos. 31 to 5 produced in this way and alloys Nos. 1 to 5 prepared by the conventional method.
Regarding the aluminum alloy strip coil of 5, 1.5■'
Cold rolled to The strength of these cold-rolled sheets in the longitudinal and width directions of the coil, the selvage ratio, and the color tone after alumite were investigated.
更に深絞り加工性(肌荒れ、フローマーク等)も調べた
。結果を表2に示す。Furthermore, deep drawing workability (rough skin, flow marks, etc.) was also investigated. The results are shown in Table 2.
本発明例によるNo、1〜5の材料はいずれも強度、耳
率、アルマイト色調のバラツキが無く、絞り性も良く、
問題はない。しかし、加熱を行わない比較例の場合、絞
り性は良いものの、強度、耳率、アルマイト色調のバラ
ツキがある。All of the materials No. 1 to 5 according to the invention examples have no variation in strength, selvage rate, and alumite color tone, and have good drawing properties.
No problem. However, in the case of a comparative example in which heating is not performed, although the drawability is good, there are variations in strength, selvage ratio, and alumite color tone.
(νt%)
表
うな絞り用材料や建築パネルのような表面処理用材料と
して好適なアルミニウム又はアルミニウム合金帯板を得
ることができ、その工業的価値は極めて高い。(vt%) It is possible to obtain an aluminum or aluminum alloy strip suitable as a drawing material or a surface treatment material such as a building panel, and its industrial value is extremely high.
Claims (3)
、Mn:0.5%以下及びMg:1.0%以下の各成分
の1種以上を含み、残部は実質的にAlであるアルミニ
ウム又はアルミニウム合金の鋳塊を熱間圧延(熱間粗圧
延+熱間仕上圧延)するに当り、350〜450℃に加
熱後熱間粗圧延を開始して、圧延途中の熱間粗圧延と熱
間仕上圧延の間で300〜450℃に5℃/sec〜5
00℃/secの昇温速度で再加熱し、熱間仕上圧延終
了温度が250℃以下になるように水媒圧延油で冷却し
て仕上圧延し巻取ることを特徴とする均一な金属組織分
布を有するアルミニウム又はアルミニウム合金帯板の製
造方法。(1) Contains one or more of the following components: Si+Fe: 1.5% or less, Cu: 0.5% or less, Mn: 0.5% or less, and Mg: 1.0% or less, and the remainder is substantially Al. When hot rolling (hot rough rolling + hot finish rolling) an ingot of aluminum or aluminum alloy, hot rough rolling is started after heating to 350 to 450°C, and hot rough rolling is carried out during rolling. 5℃/sec to 5 at 300 to 450℃ between rolling and hot finish rolling
Uniform metal structure distribution characterized by reheating at a temperature increase rate of 00°C/sec, cooling with water-borne rolling oil so that the hot finish rolling end temperature is 250°C or less, finish rolling, and winding. A method for producing an aluminum or aluminum alloy strip having the following.
、Mn:0.5%以下及びMg:1.0%以下の各成分
の1種以上を含み、残部は実質的にAlであるアルミニ
ウム又はアルミニウム合金の鋳塊を熱間圧延(熱間圧延
+熱間仕上圧延)するに当り、350〜450℃に加熱
後熱間粗圧延を開始して、圧延途中の熱間粗圧延と熱間
仕上圧延の間で300〜450℃に5℃/sec〜50
0℃/secの昇温速度で再加熱し、仕上圧延終了後、
帯板を巻取る直前に強制冷却手段によって材料温度を2
50℃以下に冷却することを特徴とする均一な金属組織
分布を有するアルミニウム又はアルミニウム合金帯板の
製造方法。(2) Contains one or more of the following components: Si+Fe: 1.5% or less, Cu: 0.5% or less, Mn: 0.5% or less, and Mg: 1.0% or less, and the remainder is substantially Al. When hot rolling (hot rolling + hot finish rolling) an aluminum or aluminum alloy ingot, hot rough rolling is started after heating to 350 to 450°C, and hot rough rolling is carried out during rolling. and hot finish rolling at 300~450℃ at 5℃/sec~50
After reheating at a temperature increase rate of 0°C/sec and finish rolling,
Immediately before winding the strip, the material temperature is reduced to 2 by forced cooling means.
A method for producing an aluminum or aluminum alloy strip having a uniform metallographic distribution, the method comprising cooling to 50°C or less.
、Mn:0.5%以下及びMg:1.0%以下の各成分
の1種以上を含み、残部は実質的にAlであるアルミニ
ウム又はアルミニウム合金の鋳塊を熱間圧延(熱間粗圧
延+熱間仕上圧延)するに当り、350〜450℃に加
熱後熱間粗圧延を開始して、仕上圧延終了後、5℃/s
ec〜500℃/secの昇温速度で300〜450℃
に再加熱し、強制冷却手段により材料温度を250℃以
下に冷却して巻取ることを特徴とする均一な金属組織分
布を有するアルミニウム又はアルミニウム合金帯板の製
造方法。(3) Contains one or more of the following components: Si+Fe: 1.5% or less, Cu: 0.5% or less, Mn: 0.5% or less, and Mg: 1.0% or less, and the remainder is substantially Al. When hot rolling (hot rough rolling + hot finish rolling) an aluminum or aluminum alloy ingot, hot rough rolling is started after heating to 350 to 450°C, and after finish rolling, 5 ℃/s
300 to 450℃ at a heating rate of ec to 500℃/sec
1. A method for producing an aluminum or aluminum alloy strip having a uniform metallographic distribution, which comprises reheating the material to a temperature of 250° C. or lower using forced cooling means and then winding the material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10660990A JPH046251A (en) | 1990-04-24 | 1990-04-24 | Production of aluminum or aluminum alloy strip having uniform distribution of metallic structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10660990A JPH046251A (en) | 1990-04-24 | 1990-04-24 | Production of aluminum or aluminum alloy strip having uniform distribution of metallic structure |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH046251A true JPH046251A (en) | 1992-01-10 |
Family
ID=14437861
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10660990A Pending JPH046251A (en) | 1990-04-24 | 1990-04-24 | Production of aluminum or aluminum alloy strip having uniform distribution of metallic structure |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH046251A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3060358B1 (en) | 2013-10-25 | 2017-11-15 | SMS group GmbH | Aluminum hot strip rolling train and method for hot rolling an aluminum hot strip |
-
1990
- 1990-04-24 JP JP10660990A patent/JPH046251A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3060358B1 (en) | 2013-10-25 | 2017-11-15 | SMS group GmbH | Aluminum hot strip rolling train and method for hot rolling an aluminum hot strip |
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