JPH0565664A - Organic coated aluminum material excellent in spot resistance weldability - Google Patents
Organic coated aluminum material excellent in spot resistance weldabilityInfo
- Publication number
- JPH0565664A JPH0565664A JP22603391A JP22603391A JPH0565664A JP H0565664 A JPH0565664 A JP H0565664A JP 22603391 A JP22603391 A JP 22603391A JP 22603391 A JP22603391 A JP 22603391A JP H0565664 A JPH0565664 A JP H0565664A
- Authority
- JP
- Japan
- Prior art keywords
- film
- aluminum material
- resin
- spot resistance
- coated aluminum
- 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.)
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- Laminated Bodies (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、主として自動車用軽量
化素材として使用されるアルミニウムまたはアルミニウ
ム合金製のアルミニウム材料、特にスポット抵抗溶接性
に優れたアルミニウム材料に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aluminum material made of aluminum or an aluminum alloy, which is mainly used as a lightweight material for automobiles, and more particularly to an aluminum material having excellent spot resistance weldability.
【０００２】[0002]
【従来の技術】近年、地球環境問題特にＣＯ2 による地
球温暖化防止対策等の観点から自動車の燃費を向上する
ために、自動車車体の軽量化が積極的に推進されている
が、その中でも材料の信頼性、加工性、リサイクル利用
等の面でアルミニウム合金が脚光を浴び、最近では自動
車車体の内外用板にも適用されつつある。2. Description of the Related Art In recent years, in order to improve fuel efficiency of automobiles from the viewpoint of global environmental problems, in particular, measures against global warming due to CO 2 , the weight reduction of automobile bodies has been actively promoted. Aluminum alloys have been spotlighted in terms of reliability, processability, recycling, etc., and are recently being applied to internal and external boards of automobile bodies.
【０００３】しかしながら、これらのアルミニウム合金
板を自動車車体として組み立てる際にはそのほとんどが
スポット抵抗溶接されるが、アルミニウム合金板はスポ
ット抵抗溶接性とりわけ電極寿命が鋼板に比べて極端に
劣るため、車体の生産効率の著しい低下を招いているの
が現状である。However, most of these aluminum alloy sheets are spot resistance welded when they are assembled into an automobile body. However, since the aluminum alloy sheets are extremely inferior in spot resistance welding property, especially electrode life, to the steel sheet, The current situation is that it has caused a significant decrease in production efficiency.
【０００４】すなわち、アルミニウム合金板のスポット
抵抗溶接では溶着現象が起こり易いことおよび同一の電
極で適正なナゲットを得ることができる溶接打点数が著
しく短いため、溶着が起こる前や適正ナゲットができな
くなる前に電極形状をドレッシングによって整えたり、
あるいは新品電極と交換する頻度も多くなり、このこと
が溶接効率、ひいては自動車車体の生産効率に多大なる
影響を及ぼしている。That is, in spot resistance welding of an aluminum alloy plate, the welding phenomenon is likely to occur and the number of welding spots at which an appropriate nugget can be obtained with the same electrode is extremely short, so that proper nugget cannot be performed before welding occurs. You can arrange the electrode shape by dressing before,
Alternatively, the frequency with which the electrode is replaced with a new one also increases, which has a great influence on the welding efficiency and, consequently, the production efficiency of the automobile body.
【０００５】アルミニウム合金が自動車のごときスポッ
ト抵抗溶接による大量生産品に実用化されだしたのはご
く最近であるため、上記のごとき問題を解決するための
適正な手段の提案は極めて少ないが、特開昭６０−１８
７４８３号公報にはアルミニウム板接合面の酸化皮膜厚
さを陽極処理にて制御することによる改善法が提案され
ている。また、自動車用アルミニウム合金板への適用を
目的としたものではないが、特公昭５４−４１５５０
号、特公昭５９−２６３９２号、特公昭５９−２６３９
３号公報にはアルミニウム接合面にＺｎ，Ｔｉおよびス
テンレス綱薄膜を介在させることによる改善法が、特開
昭５７−４３８９号公報にはＣｒ，Ｎｉ，Ｃｕ，Ａｇめ
っきを施すことによる改善法が開示されている。Since aluminum alloys have only recently been put to practical use in mass-produced products by spot resistance welding such as automobiles, there are very few proposals for proper means for solving the above problems, but Kaisho 60-18
Japanese Patent No. 7483 proposes an improvement method by controlling the thickness of the oxide film on the aluminum plate joint surface by anodizing. Moreover, although it is not intended to be applied to an aluminum alloy plate for automobiles, the Japanese Examined Patent Publication No. 54-41550
No. 59/2659, Sho 59-2639
No. 3 discloses an improving method by interposing Zn, Ti and a stainless steel thin film on an aluminum bonding surface, and JP-A-57-4389 discloses an improving method by plating with Cr, Ni, Cu, Ag. It is disclosed.
【０００６】[0006]
【発明が解決しようとする課題】しかし、陽極酸化処理
皮膜のみの制御による改善法は均一処理が難しく、且つ
その効果が不安定であり実用的ではない。また、Ｚｎ，
Ｔｉ、ステンレス綱薄膜の介在による改善法は自動車用
には適用が困難であり、Ｃｒ，Ｎｉ，Ｃｕ，Ａｇめっき
を施すことによる改善法はアルミニウム合金へのこれら
のめっきの密着性が極めて悪く実用的でない問題があ
る。However, the improvement method by controlling only the anodized film is not practical because the uniform treatment is difficult and the effect is unstable. In addition, Zn,
The improvement method by interposing Ti and stainless steel thin film is difficult to apply for automobiles, and the improvement method by applying Cr, Ni, Cu, Ag plating is extremely poor in adhesion of these platings to aluminum alloys and is practically used. There is a problem that is not relevant.
【０００７】本発明は、スポット抵抗溶接時における電
極寿命、すなわち連続打点性が従来のアルミニウム合金
板に比べ格段に向上し、且つ工業的に容易に安定的に、
しかも経済的に製造できる有機被覆アルミニウム材料を
提供することを目的とするものである。According to the present invention, the electrode life at the time of spot resistance welding, that is, the continuous spotting property is remarkably improved as compared with the conventional aluminum alloy sheet, and it is industrially easily and stably produced.
Moreover, it is an object of the present invention to provide an organically coated aluminum material that can be economically produced.
【０００８】[0008]
【課題を解決するための手段】アルミニウム合金板を同
一の銅系電極を用いて連続的にスポット抵抗溶接を繰り
返し実施すると、電極先端の通電径が打点とともに拡大
し、これにともなう板中の電流密度の低下によってナゲ
ット径も減少し、ついには電極寿命となるが、アルミニ
ウム合金板の場合には鋼板の場合に比べその電極先端径
の拡大速度が著しく大きいことに特徴がある。Means for Solving the Problems When spot resistance welding is continuously repeated on an aluminum alloy plate using the same copper-based electrode, the current-carrying diameter at the electrode tip increases with the hit point, and the current in the plate The decrease in density reduces the nugget diameter, which eventually leads to the life of the electrode. However, the aluminum alloy plate is characterized in that the expansion rate of the electrode tip diameter is significantly higher than that of the steel plate.
【０００９】したがってこのような現象に着目し、その
原因について鋭意検討した結果、アルミニウム合金板の
連続打点溶接の場合には電極先端の通電部に溶融アルミ
ニウムが付着し、その酸化物が打点とともに堆積し、こ
れが絶縁槽を形成してついには電極とこの絶縁層の間で
スパークを起こし、その際に電極が虫食い状に欠損して
ゆくことおよび接合面でのアルミニウム合金板表面の絶
縁性酸化皮膜が迅速な溶着を阻害していることを見出し
た。このようなアルミニウム合金板の特有現象が電極先
端径の拡大を促進し、電極寿命が極端に劣化するとの知
見を得た。Therefore, as a result of paying attention to such a phenomenon and diligently investigating the cause thereof, in the case of continuous spot welding of an aluminum alloy plate, molten aluminum adheres to the current-carrying portion of the electrode tip and its oxide is deposited together with the spot. Then, this forms an insulating tank and finally sparks occur between the electrode and this insulating layer, at which time the electrode is damaged like a worm and the insulating oxide film on the surface of the aluminum alloy plate at the joint surface. Was found to hinder rapid welding. It was found that such a peculiar phenomenon of the aluminum alloy plate promotes the enlargement of the electrode tip diameter and the electrode life is extremely deteriorated.
【００１０】この知見に基づき、本発明では上記アルミ
ニウム合金板が溶接時に電極先端にアルミニウム酸化物
が堆積せず、且つ接合面での迅速な溶着を可能とする技
術を鋭意検討した結果、本発明を完成するに至った。す
なわち本発明は、アルミニウム合金板の表面に、皮膜中
の全クロム量が５〜１００mg/m2 のクロメート皮膜を第
１層として形成し、その上に第２層として乾燥膜厚の
１．０〜１．５倍となる平均粒子径の導電性微粒子を乾
燥固形分中に１〜４０容積％含有した有機系樹脂皮膜を
固形皮膜として０．０１〜３μｍ形成することによって
電極先端でのアルミニウム酸化物の形成を抑制するとと
もに、接合部界面のアルミニウム合金表面に適度の電気
抵抗性を付与することによりアルミニウム合金板の溶着
を容易にすることにより、電極寿命を著しく改善するも
のである。On the basis of this finding, the present invention has earnestly studied a technique in which the aluminum alloy plate described above does not deposit aluminum oxide on the electrode tip during welding and enables quick welding at the joint surface. Has been completed. That is, according to the present invention, a chromate film having a total amount of chromium in the film of 5 to 100 mg / m 2 is formed as a first layer on the surface of an aluminum alloy plate, and a second film having a dry film thickness of 1.0 is formed thereon. Aluminum oxide at the electrode tip is formed by forming an organic resin film containing conductive fine particles having an average particle diameter of ~ 1.5 times the dry solid content in an amount of 1 to 40% by volume as a solid film in an amount of 0.01 to 3 µm. The object life is significantly improved by suppressing the formation of the object and by facilitating the welding of the aluminum alloy plate by imparting an appropriate electric resistance to the aluminum alloy surface at the interface of the joint.
【００１１】そして、有機樹脂がアクリル樹脂、アルキ
ッド樹脂、ウレタン樹脂、エポキシ樹脂、フェノール樹
脂、ポリエステル樹脂の１種または２種以上の混合物で
あるが好適である。また、導電性微粒子がＣｕ，Ｎｉ，
Ａｇ，Ｚｎ，カーボンブラック、カーボングラファイ
ト、ステンレスの１種または２種以上の混合物であるが
好適である。The organic resin is preferably one or a mixture of two or more of acrylic resin, alkyd resin, urethane resin, epoxy resin, phenol resin and polyester resin. In addition, the conductive fine particles are Cu, Ni,
One or a mixture of two or more of Ag, Zn, carbon black, carbon graphite and stainless steel is preferable.
【００１２】[0012]
【作用】以下に本発明を更に詳細に説明する。The present invention will be described in more detail below.
【００１３】本発明におけるアルミニウム材料とは、ア
ルミニウムやアルミニウム合金などのアルミニウム材料
を広く含有し、その形態は、板材、棒材、管材など任意
である。The aluminum material in the present invention includes a wide range of aluminum materials such as aluminum and aluminum alloys, and its form is arbitrary such as plate material, bar material, and pipe material.
【００１４】本発明においては、上述したアルミニウム
材料に、第１は高耐食性の付与のため、第２は上塗り塗
装との密着力を付与するためにクロメート処理を行う。In the present invention, the above-mentioned aluminum material is subjected to a chromate treatment, firstly for imparting high corrosion resistance and secondly for imparting adhesion to the top coat.
【００１５】クロメート付着量としてはクロム換算で５
〜１００mg/m2 、好ましくは１０〜５０mg/m2 の範囲と
する。クロム付着量が５mg/m2 未満であるとクロメート
非被覆部が生じ耐食性、塗膜密着性の点で好ましくな
く、１００mg/m2 を超えるとこれ以上の大幅な耐食改善
効果がなく、不経済であるばかりでなく絶縁皮膜抵抗が
著しく大きくなり、溶接性、電着塗装性を損う。１０〜
５０mg/m2の範囲では耐食性、密着性、溶接性、電着塗
装性が安定して良好な性能が得られる。The amount of chromate deposited is 5 in terms of chromium.
˜100 mg / m 2 , preferably 10 to 50 mg / m 2 . Chromium adhesion less than 5 mg / m 2 is not preferable in terms of corrosion resistance and coating adhesion, and if it exceeds 100 mg / m 2 , there is no further significant improvement in corrosion resistance and it is uneconomical. Not only that, but the insulation film resistance is significantly increased, and the weldability and electrodeposition paintability are impaired. 10 to
In the range of 50 mg / m 2 , corrosion resistance, adhesion, weldability, and electrodeposition coatability are stable and good performance is obtained.
【００１６】クロメート処理方法としては、塗布型クロ
メート法、電解クロメート法、反応クロメート法等があ
るが、いずれの方法を用いても良い。As the chromate treatment method, there are a coating type chromate method, an electrolytic chromate method, a reaction chromate method and the like, but any method may be used.
【００１７】本発明において、クロメート皮膜上の第２
層目の皮膜は有機樹脂と導電性微粒子からなるもので、
有機樹脂として例えば、アクリル樹脂、アルキッド樹
脂、ウレタン樹脂、エポキシ樹脂、フェノール樹脂、ポ
リエステル樹脂の１種または２種以上の混合物が用いら
れる。In the present invention, the second layer on the chromate film
The film of the second layer consists of organic resin and conductive fine particles,
As the organic resin, for example, one kind or a mixture of two or more kinds of acrylic resin, alkyd resin, urethane resin, epoxy resin, phenol resin, polyester resin is used.
【００１８】導電性微粒子を含有する有機樹脂の塗膜厚
は０．０１μｍ未満では加工時に塗膜がはく離し、３μ
ｍを超えると、加工性が低下するため、０．０１〜３μ
ｍとした。If the coating film thickness of the organic resin containing the conductive fine particles is less than 0.01 μm, the coating film peels off during processing and the coating film thickness is 3 μm.
If it exceeds m, the workability decreases, so 0.01-3 μ
m.
【００１９】導電性微粒子はＣｕ，Ｎｉ，Ａｇ，Ｚｎ、
カーボンブラック、カーボングラファイト、ステンレス
の１種または２種以上の 混合物が用いるのが好まし
く、これらの平均粒子径が乾燥膜厚と同等未満では導電
性にバラツキを生じ、また１．５倍超では加工時に脱離
しやすいため、導電性微粒子の平均粒径を乾燥膜厚の
１．０〜１．５倍とした。The conductive fine particles are Cu, Ni, Ag, Zn,
It is preferable to use one kind or a mixture of two or more kinds of carbon black, carbon graphite and stainless steel. If the average particle diameter of these is less than the dry film thickness, the conductivity varies, and if it exceeds 1.5 times, it is processed. Since it is easily detached at times, the average particle size of the conductive fine particles is set to 1.0 to 1.5 times the dry film thickness.
【００２０】また、導電性微粒子を乾燥固形分中に１容
積％未満では溶接性の改善効果がみられず、４０容積％
を超えると塗膜の加工性が悪くなるため、導電性微粒子
の含有量を乾燥固形分中に１容積％〜４０容積％とし
た。If the conductive fine particles are contained in the dry solid content of less than 1% by volume, the effect of improving the weldability is not observed.
If it exceeds, the workability of the coating film will be deteriorated, so the content of the conductive fine particles was set to 1% by volume to 40% by volume in the dry solid content.
【００２１】[0021]
【実施例】次に、本発明を実施例に基づき具体的に説明
する。EXAMPLES Next, the present invention will be specifically described based on examples.
【００２２】（実施例）自動車体材料として使用されて
いる代表的なアルミニウム合金板である１ｍｍ厚の５１
８２合金用い、まずアルミニウム合金表面をトリクロー
ルエチレンで蒸気脱脂後、苛性ソーダおよび硝酸溶液を
用いて表面活性化処理を行った後、表１に示す表面処理
を施した。(Example) 1 mm-thick 51, which is a typical aluminum alloy plate used as an automobile body material
Using the No. 82 alloy, the surface of the aluminum alloy was first degreased with trichloroethylene by steam, followed by surface activation treatment with a caustic soda solution and nitric acid solution, and then the surface treatment shown in Table 1.
【００２３】表面処理後のアルミニウム合金板の加工性
は９０ｍｍφに打抜いた各サンプルを径５０ｍｍφ、深
さ２５ｍｍの円筒絞り加工し、加工部をセロテープはく
離し、皮膜はく離量２mg/m2 未満を良好（○印）、２mg
/m2 以上を不良（×印）とした。The workability of the aluminum alloy plate after the surface treatment was such that each sample punched to 90 mmφ was subjected to a cylindrical drawing process with a diameter of 50 mmφ and a depth of 25 mm, and the processed part was peeled with a cellophane tape and the film peeling amount was less than 2 mg / m 2 . Good (○), 2 mg
/ m 2 or more was considered as a defect (marked with X).
【００２４】表面処理後のアルミニウム合金板の耐食性
はクロスカットをいれた各サンプルを塩水噴霧（５％Ｎ
ａＣｌ、３５℃、４時間）→湿潤（６０℃、２時間）→
乾燥（９５％ＲＨ、５０℃、２時間）のサイクル試験１
００サイクル後のクロスカット部からの最大腐食長さで
評価し、最大腐食長さ２ｍｍ未満を良好（○印）、２ｍ
ｍ以上を不良（×印）とした。The corrosion resistance of the aluminum alloy plate after the surface treatment was evaluated by salt spraying (5% N
aCl, 35 ° C., 4 hours) → wet (60 ° C., 2 hours) →
Dry (95% RH, 50 ° C, 2 hours) cycle test 1
The maximum corrosion length from the cross-cut part after 00 cycles was evaluated, and a maximum corrosion length of less than 2 mm was evaluated as good (○ mark), 2 m.
m or more was regarded as a defect (x mark).
【００２５】表面処理後のアルミニウム合金板の電極寿
命はインバーター直流溶接機を用いて下記の電極および
溶接条件にて評価した。評価は溶着するまでの打点数ま
たはナゲット径が４√ｔ（ｔ：板厚）を下まわるまでの
打点数のいずれかの少ない打点数でその効果を判定し
た。評価基準はその打点数が１０００点未満を不良（×
印）で、１０００点以上を良好（○印）とした。The electrode life of the aluminum alloy plate after the surface treatment was evaluated using an inverter DC welding machine under the following electrodes and welding conditions. In the evaluation, the effect was judged by either the number of dots until welding or the number of dots until the nugget diameter falls below 4√t (t: plate thickness), whichever is smaller. The evaluation standard is that the number of RBIs is less than 1000 (Bad)
1000 points or more were evaluated as good (○).
【００２６】（電極） ・形 状 ：円錘台頭（ＣＦ）型 ・先端径 ：５．０ｍｍφ ・材 質 ：Ｃｒ−Ｃｕ （溶接条件） ・加圧 ：１５０ｋｇｆ ・初期加圧時間 ：２０／５０秒 ・通電時間 ： ６／５０秒 ・保持時間 ： ５／５０秒 ・溶接電流 ：１５ｋＡ 本発明例および比較例を表１にまとめて示す。表１から
明らかなように、本発明はアルミニウム合金板のスポッ
ト溶接性に改善に極めて効果があることが分かる。(Electrode) -Shape: Cone conical head (CF) type-Tip diameter: 5.0 mmφ-Material: Cr-Cu (welding conditions) -Pressure: 150 kgf-Initial pressurization time: 20/50 seconds -Electrification time: 6/50 seconds-Holding time: 5/50 seconds-Welding current: 15 kA Inventive examples and comparative examples are summarized in Table 1. As is clear from Table 1, the present invention is extremely effective in improving the spot weldability of the aluminum alloy plate.
【００２７】[0027]
【表１】 [Table 1]
【表２】 [Table 2]
【００２８】[0028]
【発明の効果】以上説明したように、本発明によればア
ルミニウム板あるいはアルミニウム合金板の表面にクロ
メート皮膜と導電性微粒子を含有する有機樹脂を被覆す
ることによって、スポット抵抗溶接時の電極寿命は著し
く改善される。これによって、生産現場におけるスポッ
ト溶接時の電極の交換あるいはドレッシングによる先端
形状の整形頻度が格段に減少し、著しい生産性の向上に
つながると同時に、溶接部の品質の安定性も飛躍的に向
上する効果も期待できる。As described above, according to the present invention, by coating the surface of the aluminum plate or aluminum alloy plate with the organic resin containing the chromate film and the conductive fine particles, the electrode life during spot resistance welding can be improved. Significantly improved. As a result, the frequency of shaping the tip shape by exchanging electrodes or dressing during spot welding at the production site is significantly reduced, leading to a marked improvement in productivity, and at the same time, the stability of the quality of the weld is dramatically improved. You can expect an effect.
フロントページの続き (72)発明者 望 月 一 雄 千葉県千葉市川崎町１番地 川崎製鉄株式 会社技術研究本部内 (72)発明者 上 杉 康 治 千葉県千葉市川崎町１番地 川崎製鉄株式 会社技術研究本部内 (72)発明者 松 本 義 裕 千葉県千葉市川崎町１番地 川崎製鉄株式 会社技術研究本部内 (72)発明者 橋 口 耕 一 千葉県千葉市川崎町１番地 川崎製鉄株式 会社技術研究本部内Front Page Continuation (72) Inventor Kazuo Mochizuki, 1 Kawasaki-cho, Chiba-shi, Chiba Kawasaki Steel Co., Ltd. Technical Research Division (72) Inventor Koji Uesugi 1 Kawasaki-cho, Chiba-shi Kawasaki Steel Co., Ltd. Technical Research Division (72) Inventor Yoshihiro Matsumoto 1 Kawasaki-cho, Chiba City, Chiba Prefecture Kawasaki Steel Co., Ltd.Technical Research Division (72) Inventor Koichi Hashiguchi 1 Kawasaki-cho, Chiba City Kawasaki Steel Co., Ltd. Technical Research Division
Claims (3)
ロム量が５〜１００mg/m2 のクロメート皮膜を第１層と
して形成し、その上に第２層として乾燥膜厚の１．０〜
１．５倍となる平均粒径の導電性微粒子を乾燥固形分中
に１〜４０容量％含有した有機樹脂皮膜を固形皮膜とし
て０．０１〜３μｍ形成してなることを特徴とするスポ
ット抵抗溶接性に優れた有機被覆アルミニウム材料。1. A chromate film having a total amount of chromium in the film of 5 to 100 mg / m 2 is formed as a first layer on the surface of an aluminum material, and a second film having a dry film thickness of 1.0 to is formed on the chromate film.
Spot resistance welding, characterized in that an organic resin film containing 1 to 40% by volume of conductive fine particles having an average particle size of 1.5 times in a dry solid content is formed in a solid film of 0.01 to 3 μm. Organic coated aluminum material with excellent properties.
脂、ウレタン樹脂、エポキシ樹脂、フェノール樹脂、ポ
リエステル樹脂の１種または２種以上の混合物である請
求項１に記載のスポット抵抗溶接性に優れた有機被覆ア
ルミニウム材料。2. The organic resin excellent in spot resistance weldability according to claim 1, wherein the organic resin is one kind or a mixture of two or more kinds of acrylic resin, alkyd resin, urethane resin, epoxy resin, phenol resin and polyester resin. Coated aluminum material.
カーボンブラック、カーボングラファイト、ステンレス
の１種または２種以上の混合物である請求項１または２
に記載のスポット抵抗溶接性に優れた有機被覆アルミニ
ウム材料。3. The conductive fine particles are Cu, Ni, Ag, Zn,
The carbon black, carbon graphite, or a mixture of two or more of stainless steel.
An organic coated aluminum material having excellent spot resistance weldability according to 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22603391A JPH0565664A (en) | 1991-09-05 | 1991-09-05 | Organic coated aluminum material excellent in spot resistance weldability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22603391A JPH0565664A (en) | 1991-09-05 | 1991-09-05 | Organic coated aluminum material excellent in spot resistance weldability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0565664A true JPH0565664A (en) | 1993-03-19 |
Family
ID=16838724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22603391A Withdrawn JPH0565664A (en) | 1991-09-05 | 1991-09-05 | Organic coated aluminum material excellent in spot resistance weldability |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0565664A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013202873A (en) * | 2012-03-28 | 2013-10-07 | Sumitomo Light Metal Ind Ltd | Aluminum alloy coated plate |
| CN103697186A (en) * | 2013-12-16 | 2014-04-02 | 四川精控阀门制造有限公司 | Plug of pressure-balance oil seal plug valve and plug surface processing technology |
-
1991
- 1991-09-05 JP JP22603391A patent/JPH0565664A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013202873A (en) * | 2012-03-28 | 2013-10-07 | Sumitomo Light Metal Ind Ltd | Aluminum alloy coated plate |
| CN103697186A (en) * | 2013-12-16 | 2014-04-02 | 四川精控阀门制造有限公司 | Plug of pressure-balance oil seal plug valve and plug surface processing technology |
| CN103697186B (en) * | 2013-12-16 | 2016-04-13 | 四川精控阀门制造有限公司 | The cock of pressure balance type oil seal stopcock and cock process of surface treatment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19981203 |