JPH04319431A - Steel sheet-clad aluminum sheet for automobile, being lightweight and having excellent machinability, and manufacture thereof - Google Patents
Steel sheet-clad aluminum sheet for automobile, being lightweight and having excellent machinability, and manufacture thereofInfo
- Publication number
- JPH04319431A JPH04319431A JP8795291A JP8795291A JPH04319431A JP H04319431 A JPH04319431 A JP H04319431A JP 8795291 A JP8795291 A JP 8795291A JP 8795291 A JP8795291 A JP 8795291A JP H04319431 A JPH04319431 A JP H04319431A
- Authority
- JP
- Japan
- Prior art keywords
- thin
- plate
- aluminum
- sheet
- clad
- 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.)
- Withdrawn
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 63
- 239000010959 steel Substances 0.000 title claims abstract description 63
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 47
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000000463 material Substances 0.000 claims abstract description 25
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 19
- 239000011162 core material Substances 0.000 claims abstract description 17
- 239000000853 adhesive Substances 0.000 claims abstract description 15
- 230000001070 adhesive effect Effects 0.000 claims abstract description 15
- 229920005989 resin Polymers 0.000 claims abstract description 11
- 239000011347 resin Substances 0.000 claims abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 229910001209 Low-carbon steel Inorganic materials 0.000 abstract description 2
- 239000013585 weight reducing agent Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000003562 lightweight material Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
- B32B15/012—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of aluminium or an aluminium alloy
Landscapes
- Laminated Bodies (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、自動車の外板、内板お
よび足廻り部品等に用いられるクラッドアルミニウム薄
板もしくは薄鋼板クラッドアルミニウム合金薄板（以下
薄鋼板クラッドアルミニウム系薄板と略記する）および
その製造方法に関するものである。[Industrial Application Field] The present invention relates to clad aluminum thin sheets or thin steel sheets clad aluminum alloy thin sheets (hereinafter abbreviated as thin steel sheets and clad aluminum thin sheets) used for automobile outer panels, inner panels, suspension parts, etc. This relates to a manufacturing method.
【０００２】0002
【従来の技術】地球的規模の環境保護の一環として、自
動車の燃費が大きな問題となっている。例えば米国では
、いわゆるＣＡＦＥ（Ｃｏｒｐｏｒａｔｅ Ａｖｅｒａ
ｇｅ Ｆｕｅｌ Ｅｃｏｎｏｍｙ）問題として大きくク
ローズアップされている。そのため自動車車体の大幅な
軽量化が必要とされるが、これに対する取り組みとして
、軽量化材料の採用、中でも従来の薄鋼板に替わるアル
ミニウム薄板あるいはアルミニウム合金薄板の採用が進
もうとしている。その一方で自動車の生産性向上の目的
から、自動車の外板および内板を中心として高度の加工
性が要求されている状況である。しかしながらアルミニ
ウムは、軟らかいにも拘らず成形加工性が鋼板に比して
劣る、連続溶接時にＡｌ２Ｏ３が生じて溶接チップを劣
化させる、さらには軟らかい故に取扱い疵が生じ易い等
々、生産技術上の多くの欠点を有し、アルミニウムの採
用は大幅な経済的な非効率を覚悟せざるを得ない状況で
ある。BACKGROUND OF THE INVENTION As part of global environmental protection, fuel efficiency of automobiles has become a major issue. For example, in the United States, so-called CAFE (Corporate Avera
GE Fuel Economy) is attracting a lot of attention as a problem. For this reason, there is a need to significantly reduce the weight of automobile bodies, and efforts to address this need include the use of lightweight materials, particularly thin aluminum sheets or thin aluminum alloy sheets to replace conventional thin steel sheets. On the other hand, for the purpose of improving automobile productivity, a high degree of workability is required mainly for the outer and inner panels of automobiles. However, although aluminum is soft, its formability is inferior to that of steel sheets, Al2O3 is generated during continuous welding, which deteriorates the welding tip, and because it is soft, it is easily susceptible to handling defects. Due to its drawbacks, the adoption of aluminum has no choice but to be prepared for significant economic inefficiency.
【０００３】なお、本発明と関連の従来技術としてアル
ミニウムと鉄の積層物に関する技術は多い。例えば、芯
材を薄鋼板として、アルミニウムを片面または両面表皮
としているものに特開昭５６−９３８５４号公報、特開
昭５６−１６５５８０号公報があるが、これらは絞り性
を高めるために圧延後の焼鈍条件により製造するもので
あるとともに、自動車用としての用途には何等言及して
おらず、本発明とは異なる。また芯材をアルミニウム合
金として表皮をステンレス鋼としたものが特開昭６１−
２０６６３６号公報にあるが、耐摩耗性向上に主眼がお
かれ、かつ用途もデイスクブレーキ用デイスクに限定さ
れているため、これも本発明とは異なるものである。[0003] There are many prior art technologies related to the present invention relating to laminates of aluminum and iron. For example, there are JP-A-56-93854 and JP-A-56-165580 that use a thin steel plate as the core material and aluminum as the skin on one or both sides. It is manufactured under the following annealing conditions, and there is no mention of its use in automobiles, which is different from the present invention. In addition, the core material was made of aluminum alloy and the skin was made of stainless steel.
Although it is disclosed in Japanese Patent No. 206636, the main focus is on improving wear resistance, and the application is limited to discs for disc brakes, so this is also different from the present invention.
【０００４】0004
【発明が解決しようとする課題】以上のように、従来の
アルミニウム薄板あるいはアルミニウム合金薄板（以下
アルミニウム系薄板と略記する）では、自動車車体の軽
量化を狙いとした自動車用薄鋼板としての加工性、溶接
性など、特に加工性に大きな問題点がある。本発明は、
このような従来の問題点を解消し、自動車の外板、内板
、足廻り部品として使用に耐えられる軽量化材料を提供
することを目的とする。[Problems to be Solved by the Invention] As described above, conventional aluminum thin sheets or aluminum alloy thin sheets (hereinafter abbreviated as aluminum thin sheets) are difficult to process as thin steel sheets for automobiles aimed at reducing the weight of automobile bodies. , there are major problems with weldability, especially workability. The present invention
The purpose of the present invention is to solve these conventional problems and provide a lightweight material that can be used as outer panels, inner panels, and suspension parts of automobiles.
【０００５】[0005]
【課題を解決するための手段】本発明の要旨は以下のと
おりである。
（１）表皮材が低炭素薄鋼板で芯材をアルミニウム系薄
板とし、該薄鋼板とアルミニウム系薄板の間に樹脂系接
着剤を介在せしめたクラッド鋼板にあって、該クラッド
鋼板の薄鋼板とアルミニウム系薄板の板厚比（薄鋼板／
アルミニウム系薄板）を０．３〜５．２としたことを特
徴とする軽量で加工性の優れた自動車用薄鋼板クラッド
アルミニウム系薄板。[Means for Solving the Problems] The gist of the present invention is as follows. (1) A clad steel plate in which the skin material is a low carbon thin steel plate, the core material is an aluminum thin plate, and a resin adhesive is interposed between the thin steel plate and the aluminum thin plate, and the thin steel plate of the clad steel plate Thickness ratio of aluminum thin plate (thin steel plate/
A clad aluminum thin steel sheet for automobiles that is lightweight and has excellent workability, characterized in that the aluminum thin sheet is 0.3 to 5.2.
【０００６】（２）低炭素薄鋼板もしくはアルミニウム
薄板もしくはアルミニウム合金薄板の片面あるいは両面
に樹脂系接着剤を付着し、積層したのち加熱圧着し、そ
のせん断強度を１０Ｎ／ｍｍ２以上とすることを特徴と
する加工性に優れた自動車用薄鋼板クラッドアルミニウ
ム系薄板の製造方法。(2) A resin adhesive is attached to one or both sides of a low carbon thin steel plate, aluminum thin plate, or aluminum alloy thin plate, laminated, and heat-pressed to give a shear strength of 10 N/mm2 or more. A method for manufacturing a thin automotive steel sheet clad aluminum thin sheet with excellent workability.
【０００７】[0007]
【作用】本発明の詳細を図面により説明する。図１のご
とく、本発明の自動車用薄鋼板クラッドアルミニウム薄
板もしくはアルミニウム合金薄板は、表皮材の低炭素薄
鋼板１および２の間に芯材のアルミニウム薄板もしくは
アルミニウム合金薄板３を中間層４および５とする樹脂
系接着剤により加熱圧着させたものである。[Operation] The details of the present invention will be explained with reference to the drawings. As shown in FIG. 1, the automotive thin steel plate clad aluminum thin plate or aluminum alloy thin plate of the present invention has a thin aluminum plate or aluminum alloy thin plate 3 as a core material between low carbon thin steel plates 1 and 2 as skin materials, and intermediate layers 4 and 5. It was heat-pressed and bonded using a resin adhesive.
【０００８】このクラッド薄板には自動車用薄鋼板とし
て軽量化率で１０〜４０％が要求される状況にあるが、
それに対しては現在製造している板厚で十分に対応でき
る。例えば現在使用されている自動車用薄鋼板の０．６
ｍｍと同一板厚で軽量化率を換算した場合、現在製造可
能な薄い板厚を例にとっても、表皮材の２枚の薄鋼板が
それぞれ０．２ｍｍで芯材のアルミニウムを０．２ｍｍ
とすれば約２１％の軽量化になり、対象板厚が厚くなれ
ばさらに軽量化率は大きく達成される。また表皮材と芯
材の板厚比を適正量にすること、さらに薄鋼板とアルミ
ニウム系薄板の間に樹脂系接着剤が介在することにより
、薄鋼板とアルミニウム系薄板の接着強度が確保され加
工性が向上するものである。[0008] This thin clad plate is required to have a weight reduction rate of 10 to 40% as a thin steel plate for automobiles.
The plate thicknesses currently manufactured are sufficient for this purpose. For example, the thin steel sheet currently used for automobiles is 0.6
When converting the weight reduction rate with the same plate thickness as mm, even if we take the thin plate thickness that can currently be manufactured as an example, the two thin steel plates for the skin material are each 0.2 mm, and the aluminum core material is 0.2 mm.
If this is the case, the weight will be reduced by approximately 21%, and if the target plate thickness becomes thicker, the weight reduction rate will be even greater. In addition, by setting the thickness ratio of the skin material and the core material to an appropriate amount, and by interposing a resin adhesive between the thin steel sheet and the aluminum thin sheet, the adhesive strength between the thin steel sheet and the aluminum thin sheet is ensured. It improves the performance.
【０００９】この場合、薄鋼板とアルミニウム系薄板の
板厚比を０．３〜５．２と限定したのは、０．３未満の
ときは、表皮材の鋼板の板厚が薄くなる場合には材料の
強度不足のために加工不良となり、表皮材の鋼板の板厚
が厚い場合には曲げ半径が大きくなるため、表皮の加工
歪が大きくなることによる加工不良となるためであり、
また５．２超になると加工性は問題はないが、重量軽減
効果がなく自動車用鋼板として適さないためである。[0009] In this case, the reason why the thickness ratio of the thin steel plate and the aluminum thin plate is limited to 0.3 to 5.2 is because if it is less than 0.3, the thickness of the steel plate used as the skin material becomes thinner. This is because processing defects occur due to insufficient strength of the material, and if the steel plate used as the skin material is thick, the bending radius becomes large, resulting in processing defects due to increased processing strain on the skin.
If it exceeds 5.2, there is no problem with workability, but there is no weight reduction effect and the steel sheet is not suitable for automobiles.
【００１０】次いで表皮材と芯材の間に使用している樹
脂系接着剤は特に限定するものではなく、熱硬化性樹脂
接着剤や熱可塑性樹脂接着剤およびこれらの複合接着剤
等々のいずれでも良いが、せん断強度が１０Ｎ／ｍｍ２
以上確保出来るものが望ましく、それ未満では表皮材と
芯材の間にはくりが生じ加工性が低下するため好ましく
ない。Next, the resin adhesive used between the skin material and the core material is not particularly limited, and may be any of thermosetting resin adhesives, thermoplastic resin adhesives, composite adhesives thereof, etc. Good, but shear strength is 10N/mm2
It is desirable that the above-mentioned amount can be ensured, and if it is less than that, peeling will occur between the skin material and the core material and workability will deteriorate, so it is not preferable.
【００１１】次に表皮材の薄鋼板の種類は自動車を対象
にした場合、現在ＪＩＳに定められている熱間および冷
間圧延による軟質鋼板から高張力鋼板がコスト、加工性
などの点から適している。また芯材のアルミニウム薄板
もしくはアルミニウム合金薄板の種類は特に限定するも
のではなく、ＪＩＳに定められている１０００系〜７０
００系であればいずれでも良い。[0011] Next, when considering the type of thin steel plate used as the skin material for automobiles, from the soft steel plate produced by hot and cold rolling currently specified by JIS, to the high tensile strength steel plate, suitable from the viewpoint of cost, workability, etc. ing. In addition, the type of aluminum thin plate or aluminum alloy thin plate used as the core material is not particularly limited, and is 1000 series to 70 as specified by JIS.
Any 00 series may be used.
【００１２】次に表皮材の薄鋼板の種類は、特に限定す
るものではなく、鋼板、ステンレス板などいずれでも良
いが、自動車を対象にした場合、コスト、加工性などの
点から低炭素鋼板が望ましい。また芯材のアルミニウム
系薄板の種類は、特に限定するものではなく、アルミニ
ウム板、アルミニウム合金板などいずれでも良い。さら
にこれら薄鋼板およびアルミニウム系薄板の板厚は特に
限定しないが、自動車を対象にした場合、０．１〜１．
２ｍｍ程度が適当である。また樹脂系接着剤の中間層の
厚みは、特に限定するものではないが０．０１〜０．５
ｍｍが適当である。[0012] Next, the type of thin steel plate for the skin material is not particularly limited and may be either steel plate or stainless steel plate, but when targeting automobiles, low carbon steel plates are preferred from the viewpoint of cost and workability. desirable. Further, the type of the aluminum thin plate of the core material is not particularly limited, and may be any such as an aluminum plate or an aluminum alloy plate. Further, the thickness of these thin steel sheets and aluminum thin sheets is not particularly limited, but when used for automobiles, the thickness is 0.1 to 1.
Approximately 2 mm is appropriate. The thickness of the intermediate layer of the resin adhesive is not particularly limited, but is 0.01 to 0.5.
mm is appropriate.
【００１３】[0013]
【実施例】以下に本発明の実施例を比較例とともに説明
する。図２は本発明における自動車用クラッド鋼板の製
造方法を示したものである。即ち、表皮材の鋼板１と２
および芯材のアルミニウム系薄板３の間に中間層４およ
び５のエポキシ樹脂−アクリル樹脂の複合接着剤を挿入
し、圧着制御ロール６により積層させた状態で加熱部７
により２００℃に加熱したのち、仕上圧着ロール８によ
り仕上げ厚みに圧着させて、自動車用鋼板クラッドアル
ミニウム系薄板９を製造した。[Examples] Examples of the present invention will be described below along with comparative examples. FIG. 2 shows a method of manufacturing a clad steel sheet for automobiles according to the present invention. That is, the steel plates 1 and 2 of the skin material
A composite adhesive of epoxy resin and acrylic resin for the intermediate layers 4 and 5 is inserted between the aluminum thin plate 3 of the core material, and the heating unit 7
After heating to 200° C., the sheet was pressed to a final thickness using a finishing press roll 8 to produce an automotive steel plate clad aluminum thin sheet 9.
【００１４】この製造法において、薄鋼板とアルミニウ
ム系薄板を圧着するためにロール圧着法を採用している
が、プレスによる圧着でも十分に可能である。表１には
該製造方法により製造したクラッド鋼板の加工性を調べ
るために円筒深絞り成形による絞り性を求めた結果を示
す。本発明のクラッド鋼板の実施例（供試材１〜９）は
比較例（供試材１０〜１８）に比べて、いずれも軽量で
加工性が向上している。[0014] In this manufacturing method, a roll crimping method is used to crimp the thin steel plate and the aluminum thin plate, but crimping by a press is also sufficient. Table 1 shows the results of determining the drawability by cylindrical deep drawing in order to investigate the workability of the clad steel sheet manufactured by this manufacturing method. The examples (sample materials 1 to 9) of the clad steel plates of the present invention are all lighter and have improved workability compared to the comparative examples (sample materials 10 to 18).
【００１５】尚、比較例の供試材１０，１１は板厚比が
小さく、かつ表皮材の鋼板板厚が小さいために破断を生
じ、加工性が満足していない。供試材１２，１４はせん
断強度が不足したため、芯材のアルミニウム板が先に破
断し、加工性を満足しない。供試材１３，１５，１６，
１７，１８は加工性を満足したが軽量化率が低く、重量
軽減の効果が少ないため、自動車用の薄鋼板クラッドア
ルミニウム系薄板として満足しない。[0015] The test materials 10 and 11 of the comparative example have a small plate thickness ratio and a small thickness of the steel plate of the skin material, so they break and the workability is not satisfactory. Since the sample materials 12 and 14 lacked shear strength, the aluminum plate of the core material broke first, and the workability was not satisfied. Sample materials 13, 15, 16,
Although samples Nos. 17 and 18 satisfied the workability, the weight reduction rate was low and the weight reduction effect was small, so they were not satisfactory as thin steel sheets for automobiles.
【００１６】[0016]
【表１】[Table 1]
【００１７】[0017]
【発明の効果】本発明によれば、本発明の自動車用の薄
鋼板クラッドアルミニウム薄板もしくは薄鋼板クラッド
アルミニウム合金薄板は、軽量で加工性を確実に向上さ
すことができ、従来使用が難しかった自動車の外板、内
板などの材料重量の軽減化が要求される部品への適用が
可能となり、自動車用鋼板としての用途が拡大でき、工
業的に実用価値が大きいものである。[Effects of the Invention] According to the present invention, the thin steel plate clad aluminum thin plate or thin steel plate clad aluminum alloy thin plate for automobiles of the present invention is lightweight and has reliably improved workability, and can be used in automobiles, which was conventionally difficult to use. It can be applied to parts that require a reduction in material weight, such as outer panels and inner panels, and can be used as steel sheets for automobiles, which has great practical value industrially.
図１は本発明による自動車用薄鋼板クラッドアルミニウ
ム系薄板を略示する縦断面図、図２は本発明の製造方法
を示す概略的な工程図、である。FIG. 1 is a vertical cross-sectional view schematically showing a clad aluminum-based thin steel sheet for automobiles according to the present invention, and FIG. 2 is a schematic process diagram showing the manufacturing method of the present invention.
１，２：表皮材の低炭素薄鋼板、 ３：芯材のアルミ
ニウム薄板もしくはアルミニウム合金薄板、 ４，５
：中間層である樹脂系接着剤、 ６：圧着制御ロール
、 ７：加熱部、 ８：仕上圧着ロール、 ９：
本発明の自動車用薄鋼板クラッドアルミニウム系薄板。1, 2: Low carbon thin steel plate as skin material, 3: Aluminum thin plate or aluminum alloy thin plate as core material, 4,5
: Resin adhesive as intermediate layer, 6: Pressure control roll, 7: Heating section, 8: Finish press roll, 9:
The automotive thin steel plate clad aluminum thin plate of the present invention.
Claims (2)
ム薄板もしくはアルミニウム合金薄板とし、該薄鋼板と
アルミニウム薄板もしくはアルミニウム合金薄板との間
に樹脂系接着剤を介在せしめたクラッド鋼板にあって、
該クラッド鋼板の薄鋼板とアルミニウム板もしくはアル
ミニウム合金薄板との板厚比（薄鋼板／アルミニウム薄
板もしくはアルミニウム合金薄板）を０．３〜５．２と
したことを特徴とする軽量で加工性の優れた自動車用薄
鋼板クラッドアルミニウム薄板もしくは薄鋼板クラッド
アルミニウム合金薄板。Claim 1: A clad steel plate in which the skin material is a low carbon thin steel plate, the core material is an aluminum thin plate or an aluminum alloy thin plate, and a resin adhesive is interposed between the thin steel plate and the aluminum thin plate or aluminum alloy thin plate. hand,
The clad steel plate is lightweight and has excellent workability, characterized in that the thickness ratio between the thin steel plate and the aluminum plate or aluminum alloy thin plate (thin steel plate/aluminum thin plate or aluminum alloy thin plate) is 0.3 to 5.2. Automotive thin steel plate clad aluminum thin plate or thin steel plate clad aluminum alloy thin plate.
しくはアルミニウム合金薄板の片面あるいは両面に樹脂
系接着剤を付着し、積層したのち加熱圧着し、そのせん
断強度を１０Ｎ／ｍｍ２以上とすることを特徴とする加
工性に優れた自動車用薄鋼板クラッドアルミニウム薄板
もしくは薄鋼板クラッドアルミニウム合金薄板の製造方
法。2. A resin adhesive is attached to one or both sides of a low carbon thin steel plate, an aluminum thin plate, or an aluminum alloy thin plate, laminated, and then heated and pressed to have a shear strength of 10 N/mm2 or more. A method for producing automotive thin steel sheets, clad aluminum thin sheets, or thin steel sheets, clad aluminum alloy thin sheets, which have excellent workability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8795291A JPH04319431A (en) | 1991-04-19 | 1991-04-19 | Steel sheet-clad aluminum sheet for automobile, being lightweight and having excellent machinability, and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8795291A JPH04319431A (en) | 1991-04-19 | 1991-04-19 | Steel sheet-clad aluminum sheet for automobile, being lightweight and having excellent machinability, and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04319431A true JPH04319431A (en) | 1992-11-10 |
Family
ID=13929220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8795291A Withdrawn JPH04319431A (en) | 1991-04-19 | 1991-04-19 | Steel sheet-clad aluminum sheet for automobile, being lightweight and having excellent machinability, and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04319431A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7097915B2 (en) * | 2002-12-27 | 2006-08-29 | C2C Technologie Fur Leiterplatten Gmbh | Separator plate for manufacturing printed circuit board components |
| JP2018536564A (en) * | 2015-12-11 | 2018-12-13 | エーケー スティール プロパティ−ズ、インク． | Composite steel |
-
1991
- 1991-04-19 JP JP8795291A patent/JPH04319431A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7097915B2 (en) * | 2002-12-27 | 2006-08-29 | C2C Technologie Fur Leiterplatten Gmbh | Separator plate for manufacturing printed circuit board components |
| JP2018536564A (en) * | 2015-12-11 | 2018-12-13 | エーケー スティール プロパティ−ズ、インク． | Composite steel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19980711 |