JPH01279788A - Treatment of al alloy sheet for coating - Google Patents
Treatment of al alloy sheet for coatingInfo
- Publication number
- JPH01279788A JPH01279788A JP10978788A JP10978788A JPH01279788A JP H01279788 A JPH01279788 A JP H01279788A JP 10978788 A JP10978788 A JP 10978788A JP 10978788 A JP10978788 A JP 10978788A JP H01279788 A JPH01279788 A JP H01279788A
- Authority
- JP
- Japan
- Prior art keywords
- degreasing
- treatment
- coating
- alloy
- painting
- 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.)
- Granted
Links
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 61
- 239000011248 coating agent Substances 0.000 title abstract description 28
- 238000000576 coating method Methods 0.000 title abstract description 28
- 238000005238 degreasing Methods 0.000 claims abstract description 53
- 238000005530 etching Methods 0.000 claims abstract description 44
- 239000013527 degreasing agent Substances 0.000 claims abstract description 25
- 238000005237 degreasing agent Methods 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims description 26
- 238000010422 painting Methods 0.000 claims description 24
- 230000007547 defect Effects 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000007796 conventional method Methods 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 abstract description 13
- 238000005260 corrosion Methods 0.000 abstract description 13
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract description 6
- 239000003973 paint Substances 0.000 abstract description 5
- 230000002950 deficient Effects 0.000 abstract description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 abstract description 3
- 235000017550 sodium carbonate Nutrition 0.000 abstract description 3
- 235000011121 sodium hydroxide Nutrition 0.000 abstract description 2
- 239000001488 sodium phosphate Substances 0.000 abstract description 2
- 229910000162 sodium phosphate Inorganic materials 0.000 abstract description 2
- 235000011008 sodium phosphates Nutrition 0.000 abstract description 2
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 abstract description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 abstract 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 abstract 1
- 235000017557 sodium bicarbonate Nutrition 0.000 abstract 1
- 229910052938 sodium sulfate Inorganic materials 0.000 abstract 1
- 235000011152 sodium sulphate Nutrition 0.000 abstract 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 24
- 229910000831 Steel Inorganic materials 0.000 description 17
- 239000010959 steel Substances 0.000 description 17
- 229910045601 alloy Inorganic materials 0.000 description 16
- 239000000956 alloy Substances 0.000 description 16
- 239000000126 substance Substances 0.000 description 16
- 238000006243 chemical reaction Methods 0.000 description 11
- 238000012360 testing method Methods 0.000 description 7
- 238000004070 electrodeposition Methods 0.000 description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 6
- 239000004115 Sodium Silicate Substances 0.000 description 5
- 229910052911 sodium silicate Inorganic materials 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000004090 dissolution Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000007747 plating Methods 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 3
- 238000005097 cold rolling Methods 0.000 description 3
- 238000007739 conversion coating Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 235000014593 oils and fats Nutrition 0.000 description 3
- 239000010731 rolling oil Substances 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 2
- 229910001278 Sr alloy Inorganic materials 0.000 description 2
- 229920000180 alkyd Polymers 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 239000007798 antifreeze agent Substances 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000003925 fat Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 description 2
- 229910000165 zinc phosphate Inorganic materials 0.000 description 2
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000007591 painting process Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 235000011118 potassium hydroxide Nutrition 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- ing And Chemical Polishing (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は自動車のボディパネル等に使用される塗装用
のＡｌ２合金板の処理方法、特に脱脂処理方法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a method for treating an Al2 alloy plate for painting used for automobile body panels, etc., and particularly to a degreasing method.
従来の技術
従来一般に自動車のボディパネルとしては鋼板を用いる
のが通常であったが、最近では寒冷地における凍結防止
剤散布による腐食防止のための耐食性向上の要求や燃費
向上のための軽量化の要求がますます強くなってきてお
り、そこで例えばｚｎめつきやＺｎ合金めつき等の金属
めっきを施した表面処理鋼板や、薄くて強度の高い高張
力鋼板を自動車のボディパネルに適用することなどが進
められている。しかしながら鋼を素材としている限りは
、耐食性向上や軽量化も限界があるのが実状である。Conventional Technology In the past, steel plates were generally used for automobile body panels, but recently there has been a demand for improved corrosion resistance to prevent corrosion caused by spraying antifreeze agents in cold regions, and for weight reduction to improve fuel efficiency. Demands are becoming stronger and stronger, such as applying surface-treated steel sheets with metal plating such as ZN plating or Zn alloy plating, and thin, high-strength high-tensile steel sheets to automobile body panels. is in progress. However, the reality is that as long as steel is used as a material, there are limits to improving corrosion resistance and reducing weight.
そこで鋼板に代えて、別よりも材料特性として耐食性が
優れかつ軽量であるアルミニウム合金を自動車用ボディ
パネル等に適用することが考えられ、一部では実用化も
開始されている。Therefore, instead of steel plates, it has been considered to apply aluminum alloys, which have better corrosion resistance and lighter weight than other materials, to automobile body panels, and some have even begun to put them into practical use.
ところで自ｖＪ事のボディパネルは１Ｂを施して用いる
のが通常であり、アルミニウム合金板をボディパネルに
使用する場合、先ず前処理として板表面に付着している
圧延油や油脂類を除去するために脱脂処理を行ない、次
いで水洗した後塗膜の下地に対する密着性向上および塗
装下地の耐食性向上のために化成処理を行なって化成皮
膜を生成させ、その後電ｔｌ装を行ない、さらに中塗り
塗装および仕上塗り塗装を施すのが一般的である。ここ
で、従来アルミニウム合金板の脱脂処理にはアルカリ脱
脂処理液としてケイ酸ソーダ（Ｎａ２ＳｉＯ３）を用い
るのが一般的であり、また化成処理としてはクロメート
処理および／またはリン酸亜鉛処理を施して化成皮膜を
生成するのが一般的である。By the way, the body panels of JVC cars are usually treated with 1B, and when aluminum alloy plates are used for body panels, the first step is to remove rolling oil and fats and oils that adhere to the plate surface as a pre-treatment. After degreasing and washing with water, chemical conversion treatment is performed to improve the adhesion of the paint film to the base and the corrosion resistance of the paint base to form a chemical film. It is common to apply a finishing coat. Conventionally, sodium silicate (Na2SiO3) is commonly used as an alkaline degreasing solution for degreasing aluminum alloy plates, and chromate treatment and/or zinc phosphate treatment are used for chemical conversion treatment. Generally, a film is formed.
発明が解決すべき問題点
アルミニウム合金はそれ自体で鋼よりも耐食性が優れて
おり、したがって塗装を施した板としてもアルミニウム
合金塗装板は鋼板塗装板より耐食性が優れてはいるが、
自動車用ボディパネルとして考慮した場合、アルミニウ
ム合金塗装板は未だ満足できる程度に耐食性が優れてい
るとは言えなかった。すなわち、自動車ボディパネルと
して使用した場合、凍結防止剤が散布された道路や海浜
地区など極めて苛酷な腐食環境下で長時間使用すれば、
アルミニウム合金塗装板であっても糸錆が発生し易く、
特に美的外観が強く求められる自動車用ボディパネルと
しては未だ耐食性が充分とは言い青なかったのだが実情
である。Problems to be Solved by the Invention Aluminum alloy itself has better corrosion resistance than steel, and therefore even as a coated plate, an aluminum alloy coated plate has better corrosion resistance than a steel plate.
When considered as an automobile body panel, aluminum alloy coated plates cannot yet be said to have satisfactory corrosion resistance. In other words, when used as an automobile body panel, if it is used for a long time in an extremely corrosive environment such as on roads sprayed with antifreeze or in coastal areas,
Even aluminum alloy coated plates are susceptible to thread rust.
The reality is that corrosion resistance is still not sufficient, especially for automobile body panels where aesthetic appearance is highly sought after.
そこでアルミニウム合金塗装板の耐食性、特に耐糸錆性
の向上を図る技術の開発が強く求められており、素材で
あるアルミニウム合金の成分面での改良や塗装下地皮膜
である化成皮膜についての改良、あるいは塗装技術、塗
料の改良などが試みられてはいるが、いずれもその効果
に限界があった。Therefore, there is a strong need for the development of technology to improve the corrosion resistance of aluminum alloy coated plates, especially the thread rust resistance. Attempts have also been made to improve painting techniques and paints, but all have had limited effectiveness.
ところで塗装前処理としての脱脂処理は、従来は要はア
ルミニウム合金板表面に付看している防錆油や圧延油等
の油脂類さえ除去できれば良いと考えられ、表面の油脂
類が完全に除去れるような脱脂処理であれば、塗装板の
ｒａ性を劣化させる要因は脱脂処理には特に存在しない
と考えられていた。しかしながら本発明者等がアルミニ
ウム合金板の脱脂処理について詳細に実験・検討を重ね
たところ、脱脂処理直後の板の表面状況が塗装板におけ
る系鋼の発生に大きく影響していることを見出し、この
弁明をなすに至ったのである。By the way, degreasing treatment as a pre-painting treatment has conventionally been thought to be sufficient as long as it can remove only the oils and fats such as anti-rust oil and rolling oil that are attached to the surface of the aluminum alloy plate, and it has been thought that it is sufficient to completely remove the oils and fats on the surface. It was thought that if the degreasing treatment was such that the degreasing treatment would cause degreasing, there would be no particular factors that would cause deterioration of the RA properties of the painted board. However, when the present inventors conducted detailed experiments and studies on the degreasing treatment of aluminum alloy plates, they found that the surface condition of the plate immediately after the degreasing treatment greatly influenced the generation of steel on the painted plate. He came to the conclusion that he had made an excuse.
したがってこの発明は、自動車のボディパネル等に使用
される塗装板とした状態で優れた耐糸錆性を示すことが
可能な、塗装用アルミニウム合金板を得るための処理方
法、特に脱脂処理方法を提供することを目的とするもの
である。Therefore, this invention provides a treatment method, particularly a degreasing treatment method, for obtaining an aluminum alloy plate for painting, which can exhibit excellent thread rust resistance when used as a painted plate for use in automobile body panels, etc. The purpose is to provide
問題点を解決するための手段
この発明の請求項１記載の塗装用アルミニウム合金の処
理方法は、基本的には、塗装用へ１合金板に塗装を施す
前の前処理として脱脂処理を施すにあたり、へβ合金に
対するエツチング性を有する脱脂処理剤を用いて、へβ
合金板表面の酸化膜および表面不良部を除去することを
特徴とするものである。Means for Solving the Problems The method for treating an aluminum alloy for painting according to claim 1 of the present invention basically involves performing a degreasing treatment as a pretreatment before applying a coating to an alloy plate for painting. , using a degreasing agent that has etching properties for heβ alloy,
This method is characterized by removing the oxide film and surface defects on the surface of the alloy plate.
ここで、上述の脱脂処理においては脱脂処理剤がエツチ
ング性を有するところから、Ａｌ合金板表面がエツチン
グされるが、そのエツチング深さは平均０．５ｍ以上と
することが好ましい。In the above degreasing treatment, since the degreasing agent has etching properties, the surface of the Al alloy plate is etched, and the etching depth is preferably 0.5 m or more on average.
またこの発明の請求項３記載の塗装用アルミニウム合金
処理方法は、塗装用人２合金板を常法により製造するに
あたり、その製造工程中における３００℃以上でかつ３
０分以上の熱処理をそれ以降行なわなくなった段階で、
Ａｌ合金に対するエツチング性を有する脱脂処理剤を用
いて脱脂処理を行ない、Ａｌ合金表面の酸化膜および表
面不良部を除去することを特徴とするものである。Further, the method for treating an aluminum alloy for painting according to claim 3 of the present invention provides a method for treating an aluminum alloy for painting at a temperature of 300° C. or higher during the manufacturing process when manufacturing a painting agent 2 alloy plate by a conventional method.
At the stage when heat treatment for 0 minutes or more is no longer performed,
This method is characterized in that a degreasing treatment is performed using a degreasing agent that has etching properties for the Al alloy, and oxide films and surface defects on the surface of the Al alloy are removed.
この場合においても、脱脂処理時におけるＡｌ合金表面
のエツチング深さは、平均０．５趨以上とすることが好
ましい。In this case as well, it is preferable that the etching depth of the Al alloy surface during the degreasing treatment is on average 0.5 or more.
作 用
先ずアルミニウム合金塗装板における耐糸錆性と、脱脂
処理後のアルミニウム合金板の表面状況との関係につい
て、本発明者等が新規に見出した知見について述べる。Function First, we will describe the new knowledge discovered by the present inventors regarding the relationship between the thread rust resistance of an aluminum alloy coated plate and the surface condition of the aluminum alloy plate after degreasing.
既に述べたように、従来のアルミニウム合金板の脱脂処
理においては、アルカリ脱脂処理剤としてケイ酸ソーダ
を用いているが、ケイ酸ソーダを用いた場合、アルミニ
ウム合金板の表面に付着している油脂類は除去されるが
、アルミニウム合金板自体はほとんどエツチング溶解さ
れないことが判明した。As already mentioned, in the conventional degreasing treatment of aluminum alloy plates, sodium silicate is used as an alkaline degreasing agent. It was found that the aluminum alloy plate itself was hardly etched and melted, although the aluminum alloy plate itself was removed.
一方、種々の１Ｉ５２脂処理剤を用いて脱脂処理を行な
った後、化成処理を施してから電着塗装、中塗り塗装、
上塗り塗装を施したアルミニウム合金塗装板について、
それぞれ耐糸錆性を評価し、ｍ脂処理によるアルミニウ
ム合金板表面のエツチング量と塗装板での耐糸錆性との
関係を調べたところ、脱脂処理によるエツチング量がほ
とんど零の場合には塗装板での耐糸錆性が低く、脱脂処
理でのエツチング量がある程度以上あれば塗装板での耐
糸錆性が著しく良好となることを新規に見出した。On the other hand, after degreasing using various 1I52 fat treating agents, chemical conversion treatment is performed, and then electrodeposition coating, intermediate coating,
Regarding aluminum alloy coated plate with top coat,
The thread rust resistance of each was evaluated, and the relationship between the amount of etching on the surface of the aluminum alloy plate due to the M-grease treatment and the thread rust resistance of the painted plate was found. It has been newly discovered that the thread rust resistance of the plate is low, and that if the amount of etching in the degreasing treatment is above a certain level, the thread rust resistance of the painted plate becomes significantly better.
このことから、脱脂処理剤としてエツチング性を有する
ものを用いて、脱脂処理時にアルミニウム合金板表面を
エツチング溶解さぜることにより、塗装板における耐糸
錆性の向上を図り得ることを見出し、この発明の完成に
至ったのである。From this, we discovered that it is possible to improve the thread rust resistance of painted plates by using a degreasing agent that has etching properties and etching and dissolving the surface of the aluminum alloy plate during degreasing. The invention was completed.
またここで本発明者等の実験によれば、エツチング性を
有する脱脂処理剤を用いての脱脂処理において、アルミ
ニウム合金板の表面のエツチング深さが平均０．５ＩＪ
Ｊｎ以上であれば、塗装板で実用上充分な耐糸錆性が得
られることが判明しており、したがってエツチング深さ
が平均０．５ＩＪＪｎ以上となるように脱脂処理時のエ
ツチング溶解量を制御することが望ましい。Furthermore, according to experiments conducted by the present inventors, the average etching depth of the surface of an aluminum alloy plate was 0.5 IJ in degreasing treatment using a degreasing agent having etching properties.
It has been found that practically sufficient thread rust resistance can be obtained with coated plates if the coating is Jn or more, and therefore the amount of etching dissolved during degreasing is controlled so that the etching depth is on average 0.5IJJn or more. It is desirable to do so.
上述のように脱脂処理時においてエツチング性のある脱
脂処理剤を用いて積極的にアルミニウム合金表面をエツ
チング溶解させることによって、塗装板での耐糸錆性が
向上する理由は次のように考えられる。As mentioned above, the reason why thread rust resistance on painted plates is improved by actively etching and dissolving the aluminum alloy surface using a degreasing agent with etching properties during degreasing is thought to be as follows. .
すなわち、アルミニウム合金板の！ｌｅ装処理工程にお
いで、脱脂処理後に生成される化成処理皮膜はアルミニ
ウム合金板基板と１ｌｌ１９との密着性向上に大きな役
割を果たしている。化成処理皮膜が均一にむらなく緻密
に形成されていれば、次工程の電着塗装において塗膜が
均一に侵れた密着性をもって生成され、その場合には塗
装板での耐食性が良好となり、系鋼の発生のおそれは少
なくなる。In other words, an aluminum alloy plate! In the LE mounting process, the chemical conversion coating formed after the degreasing process plays a major role in improving the adhesion between the aluminum alloy plate substrate and 1ll19. If the chemical conversion coating is formed evenly and densely, the coating will be produced with uniformly eroded adhesion in the next step of electrodeposition coating, and in this case, the corrosion resistance of the painted plate will be good. The risk of generation of steel is reduced.
これに対し化成処理皮膜にむらがあれば、塗膜の密着性
が劣る部分や塗膜欠陥が生じたりし、このような塗膜の
密着性が劣る部分や塗膜欠陥の部分で系鋼が発生する。On the other hand, if the chemical conversion coating is uneven, areas with poor adhesion or coating defects may occur, and the system steel may deteriorate in areas with poor adhesion or defects in the coating. Occur.
しかるに、化成処理前の脱脂処理においてアルミニウム
合金板表面がほとんどエツチングされない場合は、酸化
皮膜や表面不良部（油焼付層やその他の汚染層など）が
ほとんど除去されずに残っているため、次の化成処理工
程において皮膜生成が均一に進行せず、そのためむらの
ある不均一な化成処理皮膜が生成されてしまい、これに
より塗膜にち密着性の劣る部分やｉ！大欠陥生じ、その
部分で系鋼が発生し易くなる。However, if the surface of the aluminum alloy plate is hardly etched during the degreasing treatment before chemical conversion treatment, the oxide film and surface defects (such as oil-baked layers and other contaminant layers) remain largely unremoved, so the next step is Film formation does not proceed uniformly during the chemical conversion treatment process, resulting in an uneven and non-uniform chemical conversion treatment film, which results in areas with poor adhesion and i! Large defects occur, and system steel tends to occur in those areas.
これに対し脱脂Ｍ１！ｌ！時にアルミニウム合金板表面
をエツチング溶解させて酸化皮膜や表面不良部を除去し
ておけば、化成処理皮膜をほぼ均一にむらなく生成させ
ることができ、そのため塗膜の密着性も均一でかつ良好
でまた塗膜欠陥も少なくなり、系鋼発生のおそれが少な
くなる。そして特に脱脂処理におけるエツチング量が平
均エツチング深さにして０．５１Ｊａ以上であれば、こ
のような傾向が顕著となり、系鋼発生を実用上充分な程
度まで防止することができるのである。On the other hand, degreased M1! l! If the surface of the aluminum alloy plate is etched and dissolved to remove the oxide film and surface defects, the chemical conversion film can be formed almost uniformly and evenly, so the adhesion of the paint film is also uniform and good. In addition, coating film defects are reduced, and the risk of occurrence of system steel is reduced. In particular, if the amount of etching in the degreasing treatment is 0.51 Ja or more in terms of average etching depth, this tendency becomes remarkable, and formation of steel can be prevented to a practically sufficient degree.
なお上述のような脱脂処理時のエツチング溶解による塗
装板での耐糸錆性の向上効果は、その脱脂処理が所定の
製品板厚、製品強度に仕上げられたＲ終板に対する塗装
前処理としてのものでなくても、１Ｈ用アルミニウム合
金板の製造工程中途において実施した場合にも得られる
。すなわち、塗装用アルミニウム合金の通常の製造工程
中途であっても、それ以降に３００℃以上でしかも３０
分以上の熱処理を行なわないような段階であれば、その
段階でエツチング性を有する脱脂処理剤を用いての脱脂
処理、望ましくはエツチング深さが平均０、５ＩＩＩｎ
以上となるようなエツチング溶解を伴った脱脂処理を行
ない、その段階までに発生した酸化皮膜や表面不良部を
除去しておくことにより、最終加工板とした後の塗装処
理工程において化成処理皮膜をほぼ均一にむらなく形成
することができ、そのため塗装の密着性も均一かつ良好
となるとともに塗膜欠陥も少なくなり、系鋼発生を防止
することができるのである。但し、エツチング性を有す
る脱脂処理剤による脱脂処理後に、３００℃以上でしか
も３０分以上の熱処理を行なえば、表面に再び酸化膜が
形成されたり表面不良部が発生したりしてしまい、その
ため前述のような効果が得られなくなる。したがってア
ルミニウム合金板の製造工程中途でエツチング性を有す
る脱脂処理剤を用いての脱脂処理を行なう場合は、それ
以後に３００℃以上でかつ３０分以上の熱処理をもはや
行なわなくなった段階とする必要がある。Furthermore, the above-mentioned effect of improving thread rust resistance on coated plates due to etching dissolution during degreasing treatment is due to the fact that the degreasing treatment is performed as a pre-painting treatment on R end plates that have been finished to a specified product thickness and product strength. Even if it is not a product, it can be obtained even if it is carried out in the middle of the manufacturing process of an aluminum alloy plate for 1H. In other words, even during the normal manufacturing process of aluminum alloy for painting, the temperature is 300℃ or higher and 30℃
If the heat treatment is not to be carried out for more than 10 minutes, degreasing treatment is carried out at that stage using a degreasing agent with etching properties, preferably with an average etching depth of 0.5III In.
By performing the degreasing treatment accompanied by etching and dissolution as described above and removing the oxide film and surface defects that have occurred up to that stage, the chemical conversion film can be removed in the painting process after the final processed board. It can be formed almost uniformly and evenly, and as a result, the adhesion of the coating is uniform and good, and there are fewer defects in the coating film, and it is possible to prevent the formation of steel. However, if heat treatment is performed at 300°C or higher and for 30 minutes or more after degreasing with a degreasing agent that has etching properties, an oxide film may be formed on the surface again or surface defects may occur. You will not be able to get the same effect. Therefore, when performing degreasing using a degreasing agent with etching properties in the middle of the manufacturing process of aluminum alloy plates, it is necessary to carry out degreasing treatment at a stage where heat treatment at temperatures of 300°C or higher and for 30 minutes or more is no longer performed. be.
なお前述のような脱脂処理剤によるエツチング溶解にお
いては、アルミニウム合金板表面に微細な凹凸が生じ、
この凹凸は表面積を増加させるとともに、後の電着塗装
においてアンカー効果を担う役割を果たし、したがって
このこともエツチング性を有する脱脂処理剤を用いた脱
脂処理による塗膜密着性の向上、ひいては耐糸錆性の向
上に寄与する。In addition, when etching and dissolving using a degreasing agent as mentioned above, fine irregularities occur on the surface of the aluminum alloy plate.
These irregularities not only increase the surface area but also play the role of an anchor effect in the subsequent electrodeposition coating. Therefore, this also improves the adhesion of the coating film by degreasing using a degreasing agent that has etching properties, and also leads to thread resistance. Contributes to improved rust resistance.
発明の実施のための具体的な説明
この発明で対象となるアルミニウム合金の種類は特に限
定されるものではなく、全てのアルミニウム合金に適用
可能であるが、自動車用ボディパネルに使用することが
考えられるへβ−ＭＣＪ系合金（ＪＩＳ ５０００番系
合金）およびＡｆｆｉ−Ｍｑ−８ｉ系合金（ＪＩＳ ６
０００番系合金）のうちでは、特にＡｌ−Ｍｑ−８層系
合金の場合に、塗装前の脱詣処理時にほとんどエツチン
グ溶解されない場合の！！！装板での耐糸錆性劣化が著
しい。したがってこの発明の方法は、Ａ＆−Ｍｃｘ−８
ｉ系合金の場合に最も有効となる。Specific explanation for carrying out the invention The type of aluminum alloy targeted by this invention is not particularly limited, and it is applicable to all aluminum alloys, but it is considered that it can be used for automobile body panels. β-MCJ alloy (JIS 5000 series alloy) and Affi-Mq-8i series alloy (JIS 6
000 series alloy), especially in the case of Al-Mq-8 layer alloy, it is hardly etched and dissolved during the removal treatment before painting! ! ! Significant deterioration in thread rust resistance when plating is applied. Therefore, the method of this invention comprises A&-Mcx-8
This is most effective for i-based alloys.
この発明の方法において使用されるエツチング性を有す
る脱脂処理剤としては、八２が両性であるところから、
酸性のもの、アルカリ性のもの両者いずれも適用可能で
ある。要は、アルミニウム合金表面に存在する防錆油や
圧延油等の油脂類を除去するだけでなく、表面の酸化物
層や、油焼付層その他の汚染層などの表面不良部をエツ
チング溶解によって除去し、アルミニウム合金表面に活
性な面を均一に露呈させるような脱脂処理剤であれば良
い。具体的には、リン酸ナトリウム、炭酸ナトリウム、
重炭酸ナトリウム、水酸化ナトリウム、水酸化カリウム
、ｌｉ［ナトリウム（Ｎａ２８０４ ・１０Ｈ２０＞
、セスキ１ｉｌＨ！ｆナトリウム（Ｎａ２ＣＯ３・Ｎａ
ＨＣＯ３・ ２Ｈ２０）、あるいはそれらの２種以上を
含有するものを脱脂処理剤として用いれば良い。なお脱
脂処理における処理液の濃度、浸漬時間等の条件は特に
限定しないが、要はアルミニウム合金表面の酸化皮膜お
よび表面不良部が除去できれば良い。As the degreasing agent having etching properties used in the method of this invention, since 82 is amphoteric,
Both acidic and alkaline types are applicable. In short, it not only removes oils and fats such as rust prevention oil and rolling oil that exist on the aluminum alloy surface, but also removes surface defects such as surface oxide layers, oil-baked layers, and other contaminant layers by etching and dissolving them. However, any degreasing agent that uniformly exposes the active surface on the aluminum alloy surface may be used. Specifically, sodium phosphate, sodium carbonate,
Sodium bicarbonate, sodium hydroxide, potassium hydroxide, li[sodium (Na2804 ・10H20>
, Sesqui1ilH! f Sodium (Na2CO3・Na
HCO3.2H20) or a substance containing two or more thereof may be used as the degreasing agent. Note that conditions such as the concentration of the treatment liquid and the immersion time in the degreasing treatment are not particularly limited, but it is sufficient that the oxide film and surface defects on the surface of the aluminum alloy can be removed.
なおこの発明にしたがって脱脂処理を行なったＩＢ用ア
ルミニウム合金板において、実際に塗装を行なうにあた
っては、クロメート処理および／またはリン酸亜鉛処理
によって化成処理を行ない、水洗した後、電着塗装を行
ない、さらに必要に応じて１層または２層以上の焼付は
塗装を行なうのが通常である。In addition, when actually painting the aluminum alloy plate for IB that has been degreased according to the present invention, it is subjected to chemical conversion treatment by chromate treatment and/or zinc phosphate treatment, and after washing with water, electrodeposition painting is performed. Further, if necessary, one or more layers are usually baked and painted.
また特に請求項２の発明の場合は、エツチング性を有す
る脱脂処理剤による脱脂処理を塗装用アルミニウム合金
板の製造工程の中途で行なうが、この場合最終板とした
後の塗装前処理として改めて再度脱脂処理を行なっても
良いことは勿論である。但しこの場合は最終板での脱脂
処理はエツチング性がほとんどない脱脂処理剤、例えば
ケイ酸ソーダ等を用いても良く、このようにしても、製
造工程中途での脱脂処理によるエツチング溶解によって
この発明の目的は充分に達成される。In particular, in the case of the invention of claim 2, the degreasing treatment using a degreasing agent having etching properties is carried out in the middle of the manufacturing process of the aluminum alloy plate for painting, but in this case, the degreasing treatment is performed again as a pre-painting treatment after the final plate is made. Of course, degreasing treatment may also be performed. However, in this case, the final plate may be degreased by using a degreasing agent with almost no etching properties, such as sodium silicate, and even if this method is used, the present invention will be removed by etching and dissolution during the degreasing process in the middle of the manufacturing process. objective is fully achieved.
実 施 例
［実施例１］
Ａβ−Ｍｑ系合金であるＪＩＳ ５１８２合金、および
Ａｇ−Ｍｃ＞−ｓ ｒ系合金であるＪＩＳ ６０６１合
金について、通常の製造方法にしたがって圧延して板厚
１．０顛の最終板とし、その最終板から切出した試験片
について、第１表中のＮｏ、１〜Ｎ０１４に示すような
種々の条件で脱脂処理を行なった。脱脂処理後、水洗し
、ざらに化成処理としてクロメート処理を施し、次いで
水洗および純水洗を行なった債、エポキシ樹脂のカチオ
ン電着塗装（１８０℃×２０分）を厚さ２０ＩＪＩＩで
行ない、さらに中塗り１８としてメラミンアルキド樹脂
の焼付塗装（１４０℃×３０分）を厚さ３５趨で行ない
、その後上塗り塗装とＱてメラミンアルキド樹脂の焼付
塗装（１４０℃×３０分）を厚さ３５ｕａで行なった。Examples [Example 1] JIS 5182 alloy, which is an Aβ-Mq alloy, and JIS 6061 alloy, which is Ag-Mc>-sr alloy, were rolled to a plate thickness of 1.0 according to a normal manufacturing method. The test pieces cut from the final plate were degreased under various conditions as shown in Nos. 1 to 014 in Table 1. After degreasing, the bond was washed with water, subjected to chromate treatment as a chemical conversion treatment, and then washed with water and pure water.The bond was then coated with cationic electrodeposition of epoxy resin (180℃ x 20 minutes) to a thickness of 20IJII, and then As coating 18, a baking coating of melamine alkyd resin (140°C x 30 minutes) was applied to a thickness of 35 mm, followed by a top coat and a baking coating of melamine alkyd resin (140°C x 30 minutes) to a thickness of 35 ua. .
このようにして得られた塗装試験片について次のような
条件の試験を行ない、耐糸錆性の評価を行なった。The painted test pieces thus obtained were tested under the following conditions to evaluate their thread rust resistance.
すなわち先ず塗膜にクロスカットを入れて、ＪＩＳ ｉ
’２３７１に準拠した塩水噴霧試験を２４Ｍ間行ない、
続いて湿潤試験として、温度２５℃、湿度８５％ＲＨの
湿ａ！ｌ雰囲気に４２日間放置し、表面に発生した系鋼
の長さにより耐糸錆性を評価した。その結果を第１表中
に示す。なおここで、耐糸錆性評価は、系鋼の長さが１
．０ｆｆｉ１以下では良好として◎印、１．０〜２．０
闇でやや良好として○印、２．０〜４．０闇でやや不良
としてΔ印、４ｍｍ以上で不良としてｘ印を付した。That is, first, crosscuts are made in the coating film, and JIS i
A salt spray test based on '2371 was conducted for 24M,
Next, as a humidity test, a humidity test was performed at a temperature of 25°C and a humidity of 85% RH. The specimens were left in an atmosphere for 42 days, and the thread rust resistance was evaluated based on the length of the steel produced on the surface. The results are shown in Table 1. Here, the string rust resistance evaluation is based on the length of the series steel being 1
．． 0ffi1 or less is considered good, marked ◎, 1.0 to 2.0
A mark of ◯ indicates that it is slightly good in darkness, a mark of Δ indicates that it is somewhat poor in a range of 2.0 to 4.0 mm, and a mark of x indicates that it is defective in a case of 4 mm or more.
第 １ 表
第１表に示されるように、エツチング性がほとんどない
ケイ酸ナトリウムもしくはそれを主体とする脱脂処理剤
を用いて脱脂処理を行って脱脂処理時におけるエツチン
グ溶解層が零であったＮＯ，１３、Ｎ０１４の比較例で
は、特にＡｇ−ｖ９−ｓ ｒ系合金の場合に塗装板での
耐糸錆性が劣っていた。これに対しエツチング性を有す
る脱脂処理剤を用いてエツチング溶解深さが０．５／Ｊ
ＩＪ以上となった本発明例（ＮＯ，１〜Ｎｏ、１２）で
はいずれも塗装板で良好な耐糸錆性を示すことが判明し
た。Table 1 As shown in Table 1, when degreasing was performed using sodium silicate, which has almost no etching property, or a degreasing agent mainly composed of sodium silicate, the etching dissolved layer during degreasing was zero. , 13, and N014, the thread rust resistance on the painted plate was poor, especially in the case of the Ag-v9-sr alloy. On the other hand, using a degreasing agent with etching properties, the etching dissolution depth is 0.5/J.
It was found that all of the examples of the present invention (No. 1 to No. 12) with IJ or higher exhibited good thread rust resistance on coated plates.
［実施例２］
実施例１と同様な／ｌ’−Ｍｑ系合金および八２−Ｍｑ
−８ｉ系合金について、厚さ１．０闇の最終板を製造す
る工程の中途において第２表のＮＱ１５〜Ｎ０．１７に
示すような条件で脱脂処理（第１次）を行ない、その後
最終板厚、ＪＩ終強度に仕上げた後、その最終板につい
て再度脱脂処３！Ｉ！（第２次）を行ない、その後実施
例１と同じ条件で化成処理、電着塗装、中塗り塗装（焼
付塗装）、上塗り塗装（焼付塗装）を行なった。なお最
終板を得るための製造工程としては、鋳塊に対し５３０
℃×１０時間均熱処理を施した後、５３０℃×２時間加
熱して板厚４ＩＭに熱間圧延し、次いで第１次冷間圧延
を行なって板厚２Ｍとし、さらに３５０℃×２時間の中
間焼鈍を行なってから第２次冷間圧延を行なって板厚１
１１＃Ｉとし、その後５４０℃に加熱して６０秒間保持
後１２００℃／分の冷却速度で急冷する溶体化処理を行
なった。そしてこのような製造工程中途における第１次
脱脂処理は、中間焼鈍と第２次冷間圧延との間で行なっ
た。[Example 2] /l'-Mq-based alloy and 82-Mq similar to Example 1
For -8i alloys, degreasing treatment (first step) is performed under the conditions shown in NQ15 to N0.17 in Table 2 in the middle of the process of manufacturing the final plate with a thickness of 1.0 mm, and then the final plate is After finishing to the thickness and JI final strength, the final board is degreased again 3! I! After that, chemical conversion treatment, electrodeposition coating, intermediate coating (baked coating), and top coating (baked coating) were performed under the same conditions as in Example 1. The manufacturing process to obtain the final plate is as follows:
After soaking for 10 hours at 530°C, hot rolling was carried out to a thickness of 4IM by heating at 530°C for 2 hours, followed by first cold rolling to a thickness of 2M, and then 2 hours at 350°C. After performing intermediate annealing, secondary cold rolling is performed to obtain a plate thickness of 1
11#I, and then subjected to solution treatment by heating to 540°C, holding for 60 seconds, and rapidly cooling at a cooling rate of 1200°C/min. The first degreasing treatment in the middle of the manufacturing process was performed between intermediate annealing and second cold rolling.
前述のようにして得られた塗装板について、実施例１の
場合と同様に、塩水噴霧試験および湿潤試験を行ない、
耐糸錆性を評価した。その結果を第２表中に示す。The coated board obtained as described above was subjected to a salt spray test and a wetness test in the same manner as in Example 1.
The thread rust resistance was evaluated. The results are shown in Table 2.
第 ２ 表
第２表から明らかなように、最終板を得るための製造工
程の中途（但しそれ以降に３００℃以上でかつ３０分以
上の熱処理を施さなくなった段階）においてエツチング
性を有する脱脂処理剤を用いて脱脂処理（第１次）を行
ない、その段階で表面をエツチング溶解させた場合には
、最終板でエツチング性がほとんどないケイ酸ナトリウ
ムを脱脂処理剤として用いて脱脂処ＩｔＪ！（第２次）
を行なっても、塗装板で充分な耐糸錆性を得ることがで
きた。Table 2 As is clear from Table 2, degreasing treatment with etching properties is carried out in the middle of the manufacturing process to obtain the final board (however, at the stage after which no heat treatment is performed at 300°C or higher and for 30 minutes or more). If the surface is etched and dissolved at that stage, the final plate is degreased using sodium silicate, which has almost no etching properties, as the degreasing agent. (Second)
Even with this method, sufficient thread rust resistance could be obtained with the coated board.
発明の効果
この発明の塗装用アルミニウム合金の処理方法によれば
、エツチング性を有する脱脂処理剤を用いて脱脂処理を
行なっておくことによって、塗装板の状態で著しく優れ
た耐糸錆性を得ることができる。したがってこの発明の
方法を適用した塗装用アルミニウム合金を用いたｆｆ１
Ｈ板は、凍結防止剤が散布された道路あるいは海浜地区
の如く苛酷な腐食環境下で長時間使用しても系鋼発生の
おそれが少なく、自動車用ボディパネルや各種自動車部
品等に使用される塗装板に最適である。Effects of the Invention According to the method for treating aluminum alloys for painting according to the present invention, by performing degreasing treatment using a degreasing treatment agent having etching properties, extremely excellent thread rust resistance can be obtained in the state of a painted plate. be able to. Therefore, ff1 using the coating aluminum alloy to which the method of this invention is applied
H-plates are used for automobile body panels and various automobile parts because they have little risk of forming steel even when used for long periods of time in harsh corrosive environments such as on roads sprayed with antifreeze agents or in coastal areas. Ideal for painted boards.
出願人 スカイアルミニウム株式会社代理人 弁理
士 豊 １）武 久
（ばか１名）Applicant Sky Aluminum Co., Ltd. Agent Patent Attorney Yutaka 1) Hisashi Take (one idiot)
Claims (4)
脱脂処理を施すにあたり、Ａｌ合金に対するエッチング
性を有する脱脂処理剤を用いて、Ａｌ合金板表面の酸化
膜および表面不良部を除去することを特徴とする塗装用
Ａｌ合金板の処理方法。(1) When performing degreasing treatment as a pretreatment before painting an Al alloy plate for painting, use a degreasing agent that has etching properties for Al alloy to remove oxide films and surface defects on the surface of the Al alloy plate. A method for treating an Al alloy plate for painting, characterized by:
ング深さを平均０．５μｍ以上とする請求項１記載の塗
装用Ａｌ合金板の処理方法。(2) The method for treating an Al alloy plate for painting according to claim 1, wherein the etching depth of the surface of the Al alloy plate in the degreasing treatment is on average 0.5 μm or more.
、その製造工程中における３００℃以上でかつ３０分以
上の熱処理をそれ以降行なわなくなった段階で、Ａｌ合
金に対するエッチング性を有する脱脂処理剤を用いて脱
脂処理を行ない、Ａｌ合金表面の酸化膜および表面不良
部を除去することを特徴とする塗装用Ａｌ合金板の処理
方法。(3) When manufacturing an Al alloy plate for painting by a conventional method, a degreasing agent having etching properties for the Al alloy is used at a stage where heat treatment at 300°C or higher and for 30 minutes or more during the manufacturing process is no longer performed. 1. A method for treating an Al alloy plate for painting, which comprises degreasing using a degreasing process to remove an oxide film and surface defects on the Al alloy surface.
グ深さを平均０．５μｍ以上とする請求項３記載の塗装
用Ａｌ合金板の処理方法。(4) The method for treating an Al alloy plate for painting according to claim 3, wherein the etching depth of the surface of the Al alloy in the degreasing treatment is on average 0.5 μm or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63109787A JPH0759755B2 (en) | 1988-05-02 | 1988-05-02 | Method for manufacturing A-l alloy coated plate for automobiles having excellent system rust resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63109787A JPH0759755B2 (en) | 1988-05-02 | 1988-05-02 | Method for manufacturing A-l alloy coated plate for automobiles having excellent system rust resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01279788A true JPH01279788A (en) | 1989-11-10 |
| JPH0759755B2 JPH0759755B2 (en) | 1995-06-28 |
Family
ID=14519210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63109787A Expired - Lifetime JPH0759755B2 (en) | 1988-05-02 | 1988-05-02 | Method for manufacturing A-l alloy coated plate for automobiles having excellent system rust resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0759755B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0257692A (en) * | 1988-08-22 | 1990-02-27 | Nissan Motor Co Ltd | Aluminum alloy member for automobile |
| JPH0533158A (en) * | 1991-10-21 | 1993-02-09 | Nippon Steel Corp | Aluminum sheet excellent in filiform corrosion resistance |
| US5690539A (en) * | 1995-08-07 | 1997-11-25 | Cal-West Equipment Company Inc. | Method of abarding using surface abrasion compositions |
| CN105525319A (en) * | 2016-01-18 | 2016-04-27 | 苏州市华婷特种电镀有限公司 | Method for treatment in electroplating process |
| CN105586616A (en) * | 2016-01-18 | 2016-05-18 | 苏州市华婷特种电镀有限公司 | Process for pretreating part to be plated in electroplating process |
| WO2017170181A1 (en) * | 2016-03-30 | 2017-10-05 | 株式会社神戸製鋼所 | Aluminum alloy material with heat-cured coating having excellent durability and production method therefor |
| JP2019181450A (en) * | 2018-04-17 | 2019-10-24 | 株式会社神戸製鋼所 | Washing method of aluminum alloy plate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5045738A (en) * | 1973-08-27 | 1975-04-24 | ||
| JPS5939499A (en) * | 1982-08-28 | 1984-03-03 | Tokyo Shiyouketsu Kinzoku Kk | Compacting method of green compact |
| JPS60110879A (en) * | 1983-11-19 | 1985-06-17 | Kobe Steel Ltd | Surface treatment of aluminum alloy plate for can cover |
| JPS6196074A (en) * | 1984-10-15 | 1986-05-14 | Mazda Motor Corp | Chemical conversion treatment of product consisting of combined aluminum material and steel material |
-
1988
- 1988-05-02 JP JP63109787A patent/JPH0759755B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5045738A (en) * | 1973-08-27 | 1975-04-24 | ||
| JPS5939499A (en) * | 1982-08-28 | 1984-03-03 | Tokyo Shiyouketsu Kinzoku Kk | Compacting method of green compact |
| JPS60110879A (en) * | 1983-11-19 | 1985-06-17 | Kobe Steel Ltd | Surface treatment of aluminum alloy plate for can cover |
| JPS6196074A (en) * | 1984-10-15 | 1986-05-14 | Mazda Motor Corp | Chemical conversion treatment of product consisting of combined aluminum material and steel material |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0257692A (en) * | 1988-08-22 | 1990-02-27 | Nissan Motor Co Ltd | Aluminum alloy member for automobile |
| JPH0533158A (en) * | 1991-10-21 | 1993-02-09 | Nippon Steel Corp | Aluminum sheet excellent in filiform corrosion resistance |
| JPH0715149B2 (en) * | 1991-10-21 | 1995-02-22 | 新日本製鐵株式会社 | Aluminum plate with excellent resistance to thread and rust |
| US5690539A (en) * | 1995-08-07 | 1997-11-25 | Cal-West Equipment Company Inc. | Method of abarding using surface abrasion compositions |
| CN105525319A (en) * | 2016-01-18 | 2016-04-27 | 苏州市华婷特种电镀有限公司 | Method for treatment in electroplating process |
| CN105586616A (en) * | 2016-01-18 | 2016-05-18 | 苏州市华婷特种电镀有限公司 | Process for pretreating part to be plated in electroplating process |
| WO2017170181A1 (en) * | 2016-03-30 | 2017-10-05 | 株式会社神戸製鋼所 | Aluminum alloy material with heat-cured coating having excellent durability and production method therefor |
| JP2019181450A (en) * | 2018-04-17 | 2019-10-24 | 株式会社神戸製鋼所 | Washing method of aluminum alloy plate |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0759755B2 (en) | 1995-06-28 |
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