JPH0551355B2 - - Google Patents
Info
- Publication number
- JPH0551355B2 JPH0551355B2 JP86313699A JP31369986A JPH0551355B2 JP H0551355 B2 JPH0551355 B2 JP H0551355B2 JP 86313699 A JP86313699 A JP 86313699A JP 31369986 A JP31369986 A JP 31369986A JP H0551355 B2 JPH0551355 B2 JP H0551355B2
- Authority
- JP
- Japan
- Prior art keywords
- acid
- zirconium
- titanium
- film
- chromium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000463 material Substances 0.000 claims description 22
- 229910052782 aluminium Inorganic materials 0.000 claims description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 13
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 12
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 229920003002 synthetic resin Polymers 0.000 claims description 10
- 239000000057 synthetic resin Substances 0.000 claims description 10
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 9
- 238000002845 discoloration Methods 0.000 claims description 8
- 229910052719 titanium Inorganic materials 0.000 claims description 8
- 239000010936 titanium Substances 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 6
- 229910052726 zirconium Inorganic materials 0.000 claims description 6
- 229910052804 chromium Inorganic materials 0.000 claims description 5
- 239000011651 chromium Substances 0.000 claims description 5
- 150000003608 titanium Chemical class 0.000 claims description 5
- 239000013522 chelant Substances 0.000 claims description 4
- PHFQLYPOURZARY-UHFFFAOYSA-N chromium trinitrate Chemical compound [Cr+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O PHFQLYPOURZARY-UHFFFAOYSA-N 0.000 claims description 4
- 150000002148 esters Chemical class 0.000 claims description 4
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 claims description 4
- OERNJTNJEZOPIA-UHFFFAOYSA-N zirconium nitrate Chemical compound [Zr+4].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O OERNJTNJEZOPIA-UHFFFAOYSA-N 0.000 claims description 4
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 claims description 3
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 claims description 3
- QLOKJRIVRGCVIM-UHFFFAOYSA-N 1-[(4-methylsulfanylphenyl)methyl]piperazine Chemical compound C1=CC(SC)=CC=C1CN1CCNCC1 QLOKJRIVRGCVIM-UHFFFAOYSA-N 0.000 claims description 2
- JHWIEAWILPSRMU-UHFFFAOYSA-N 2-methyl-3-pyrimidin-4-ylpropanoic acid Chemical compound OC(=O)C(C)CC1=CC=NC=N1 JHWIEAWILPSRMU-UHFFFAOYSA-N 0.000 claims description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 2
- 229920002125 Sokalan® Polymers 0.000 claims description 2
- 229920002678 cellulose Polymers 0.000 claims description 2
- 239000001913 cellulose Substances 0.000 claims description 2
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 2
- DCKVFVYPWDKYDN-UHFFFAOYSA-L oxygen(2-);titanium(4+);sulfate Chemical compound [O-2].[Ti+4].[O-]S([O-])(=O)=O DCKVFVYPWDKYDN-UHFFFAOYSA-L 0.000 claims description 2
- 239000004584 polyacrylic acid Substances 0.000 claims description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 2
- PXLIDIMHPNPGMH-UHFFFAOYSA-N sodium chromate Chemical compound [Na+].[Na+].[O-][Cr]([O-])(=O)=O PXLIDIMHPNPGMH-UHFFFAOYSA-N 0.000 claims description 2
- 229910000348 titanium sulfate Inorganic materials 0.000 claims description 2
- OMQSJNWFFJOIMO-UHFFFAOYSA-J zirconium tetrafluoride Chemical compound F[Zr](F)(F)F OMQSJNWFFJOIMO-UHFFFAOYSA-J 0.000 claims description 2
- YHWCPXVTRSHPNY-UHFFFAOYSA-N butan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] YHWCPXVTRSHPNY-UHFFFAOYSA-N 0.000 claims 1
- 150000001844 chromium Chemical class 0.000 claims 1
- 150000003754 zirconium Chemical class 0.000 claims 1
- 230000007797 corrosion Effects 0.000 description 13
- 238000005260 corrosion Methods 0.000 description 13
- 238000000576 coating method Methods 0.000 description 6
- 150000007513 acids Chemical class 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000005219 brazing Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000012756 surface treatment agent Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 229910001593 boehmite Inorganic materials 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- -1 titanate esters Chemical class 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- XROWMBWRMNHXMF-UHFFFAOYSA-J titanium tetrafluoride Chemical compound [F-].[F-].[F-].[F-].[Ti+4] XROWMBWRMNHXMF-UHFFFAOYSA-J 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Laminated Bodies (AREA)
Description
産業上の利用分野
この発明は、ルーム・クーラなどの熱交換器に
用いられる耐熱変色性に優れた皮膜を有するアル
ミニウム・フイン材に関するものである。
従来の技術
ルーム・クーラなどの熱交換器に用いられる表
面処理アルミニウム・フイン材としては、優れた
親水性、耐食性および成形性を有したものである
ことが要求される。従来、アルミニウム・フイン
材にこれらの性能を付与するには、無機系の表面
処理剤を用いて、フイン材にクロメート皮膜やベ
ーマイト皮膜を形成したり、有機系の表面処理剤
を用いてフイン材にウレタン樹脂皮膜やアクリル
酸樹脂皮膜を形成する方法が行なわれていた。
発明が解決しようとする課題
しかしながら、従来の無機系処理剤により処理
されたフイン材は、耐食性には優れているが、成
形性に劣るという問題があり、また有機系処理剤
により処理されたフイ材は、逆に成形性には優れ
ているが、耐食性に劣り、耐食性を向上させるた
めに膜厚を厚くする必要があつた。ところがこれ
では、熱交換器の組立て工程におけるフインのろ
う付けないし溶接時に、皮膜が焼け焦げて黄変な
いし褐変し、これが外観時に大きな欠陥となると
いう問題があつた。
この発明の目的は、上記の従来技術の問題を解
決し、無機系皮膜および有機系皮膜の各長所をそ
のまゝ生かし、かつ各短所をそれぞれ克服して、
耐食性および成形性に優れしかもろう付けないし
溶接時に焼け焦げを生じるおそれがないうえに、
従来のように耐食性を向上させるために膜厚を厚
くする必要がなく、経済性が高い、耐熱変色性に
優れた皮膜を有する熱交換器用アルミニウム・フ
イン材を提供しようとするにある。
課題を解決するための手段
この発明は、上記の目的を達成するために、皮
膜形成能を有する合成樹脂と、合成樹脂とキレー
トを形成しかつクロム、ジルコニウムまたはチタ
ンよりなる金属の酸化物、同金属酸ないしその
塩、同金属酸エステル、および酸のクロム、ジル
コニウムまたはチタン塩よりなる群から選ばれた
クロム、ジルコニウムまたはチタン含有化合物の
少なくとも１種とを含みかつ膜厚0.1〜1.0μｍで
あることを特徴とする耐熱変色性に優れた皮膜を
有する熱交換器用アルミニウム・フイン材を要旨
としている。
上記において、皮膜形成能を有する合成樹脂
は、アルミニウム・フイン材の良好な成形性を確
保するために必要な成分であつて、その代表例と
しては、ポリアクリル酸があげられ、ほかにポリ
ビニルアルコールやセルロースヒドロキシエチル
エーテルなども使用可能である。
合成樹脂とキレートを形成する金属含有化合物
は、処理フイン材の良好な耐食性を確保するため
に必要な成分であつて、クロム、ジルコニウムま
たはチタンを含有する化合物である。
その代表例としては、３価または６価クロムの
クロム酸があげられ、ほかに酸化ジルコニウム、
酸化チタン、酸化クロムよりなる金属酸化物、例
えばクロム酸カリウム、クロム酸ナトリウム、重
クロム酸カリウムまたは重クロム酸ナトリウムな
どの金属酸塩、チタン酸エステルなどの金属酸エ
ステル、例えば硝酸クロム、硝酸ジルコニウム、
フツ化ジルコニウム、フツ化チタンまたは硫酸チ
タンなどの、酸のクロム、ジルコニウムまたはチ
タン塩も使用可能である。
上記皮膜の膜厚は、0.1〜1.0μｍである。ここ
で、皮膜の膜厚が0.1μｍ未満では、皮膜としての
性能が充分でない。また、皮膜の膜厚は1.0μｍを
越える必要はなく、1.0μｍを越える膜厚はその形
成のために処理剤を多く必要として、経済的でな
いし、熱交換器の組立て時のろう付けないし溶接
の熱によつて皮膜に焼け焦げを生じるおそれがあ
る。
合成樹脂と、クロム、ジルコニウムまたはチタ
ン含有化合物との配合比は、好ましくは２：８〜
９：１、さらに好ましくは３：７〜７：３であ
る。
実施例
つぎに、この発明の実施例と従来技術に対応す
る比較例とを示す。
実施例１〜10および比較例１〜４
皮膜として、表１に示す各種組成のものを形成
した。各皮膜については、それぞれの皮膜形成剤
を用いてロールコート法により通常の処理条件下
にアルミニウム・フイン材を表面処理し、表１に
示す膜厚の皮膜を形成した。
こうして表面処理されたフイン材について、耐
食性、成形性および耐熱変形性の試験を行なつ
た。試験結果を表１に示す。
耐食性については、フイン材に塩水を300時間
噴霧した結果、異常がない場合に◎印を付し、ほ
んのわずかに腐食を生じた場合に○印を付すこと
によつて、耐食性の評価を表わした。
成形性については、しごき加工によりカラーを
形成し、その高さが所要値に達したときに割れが
生じない場合に◎印を付し、割れが生じた場合に
△印を付すことによつて、成形性の評価を表わし
た。
耐熱変色性については、フイン材を400℃で１
分間加熱したときに、外観に変化がない場合に◎
印を付し、表面がかなり黄変した場合に△印を付
し、著しく黄変した場合に×印を付すことによつ
て、耐熱変色性の評価を表わした。
INDUSTRIAL APPLICATION FIELD This invention relates to an aluminum fin material having a coating with excellent heat discoloration resistance and used in heat exchangers such as room coolers. BACKGROUND ART Surface-treated aluminum fin materials used in heat exchangers such as room coolers are required to have excellent hydrophilicity, corrosion resistance, and formability. Conventionally, in order to impart these properties to aluminum fin materials, an inorganic surface treatment agent was used to form a chromate film or a boehmite film on the fin material, or an organic surface treatment agent was used to improve the fin material. Previously, a method of forming a urethane resin film or an acrylic acid resin film was used. Problems to be Solved by the Invention However, although fin materials treated with conventional inorganic treatment agents have excellent corrosion resistance, they have a problem of poor formability, and fin materials treated with organic treatment agents have On the other hand, the material has excellent formability, but poor corrosion resistance, and it was necessary to increase the film thickness to improve corrosion resistance. However, this method had the problem that during the brazing or welding of the fins in the heat exchanger assembly process, the film was scorched and turned yellow or brown, resulting in a major defect in appearance. The purpose of this invention is to solve the problems of the above-mentioned prior art, take advantage of each of the advantages of inorganic coatings and organic coatings, and overcome each of their disadvantages.
It has excellent corrosion resistance and formability, and there is no risk of burning during brazing or welding.
To provide an aluminum fin material for a heat exchanger that does not require thickening of the film to improve corrosion resistance as in the past, is highly economical, and has a film with excellent heat discoloration resistance. Means for Solving the Problems In order to achieve the above object, the present invention comprises a synthetic resin having film-forming ability, a metal oxide which forms a chelate with the synthetic resin and is composed of chromium, zirconium or titanium. Contains at least one chromium-, zirconium-, or titanium-containing compound selected from the group consisting of metal acids, salts thereof, esters of the same metals, and chromium-, zirconium-, or titanium salts of acids, and has a film thickness of 0.1 to 1.0 μm. The gist of this paper is an aluminum fin material for heat exchangers that has a film with excellent thermal discoloration resistance. In the above, the synthetic resin with film-forming ability is a necessary component to ensure good moldability of aluminum fin materials, and typical examples include polyacrylic acid, polyvinyl alcohol and cellulose hydroxyethyl ether can also be used. The metal-containing compound that forms a chelate with the synthetic resin is a necessary component for ensuring good corrosion resistance of the treated fin material, and is a compound containing chromium, zirconium, or titanium. Typical examples include trivalent or hexavalent chromic acid, as well as zirconium oxide,
Metal oxides consisting of titanium oxide and chromium oxide, such as metal salts such as potassium chromate, sodium chromate, potassium dichromate or sodium dichromate, metal acid esters such as titanate esters, such as chromium nitrate, zirconium nitrate ,
Chromium, zirconium or titanium salts of acids such as zirconium fluoride, titanium fluoride or titanium sulfate can also be used. The film thickness of the above film is 0.1 to 1.0 μm. Here, if the film thickness of the film is less than 0.1 μm, the performance as a film is not sufficient. In addition, the film thickness does not need to exceed 1.0 μm, and a film thickness exceeding 1.0 μm requires a large amount of processing agent to form, making it uneconomical and requiring brazing or welding when assembling the heat exchanger. There is a risk of burning the film due to the heat. The blending ratio of the synthetic resin and the chromium-, zirconium-, or titanium-containing compound is preferably 2:8 to 2:8.
The ratio is 9:1, more preferably 3:7 to 7:3. Examples Next, examples of the present invention and comparative examples corresponding to the prior art will be shown. Examples 1 to 10 and Comparative Examples 1 to 4 Films having various compositions shown in Table 1 were formed. For each film, the aluminum fin material was surface-treated using the respective film-forming agent under normal treatment conditions by a roll coating method to form a film having the thickness shown in Table 1. The thus surface-treated fin material was tested for corrosion resistance, formability, and heat deformation resistance. The test results are shown in Table 1. Corrosion resistance was evaluated by spraying salt water on the fin material for 300 hours, marking it with an ◎ mark if there was no abnormality, and marking it with an ○ mark if there was only slight corrosion. . Regarding formability, a collar is formed by ironing, and when the height reaches the required value, if no cracks occur, mark ◎, and if cracks occur, mark △. , represents the evaluation of moldability. Regarding heat discoloration resistance, the fin material was heated to 1 at 400℃.
If there is no change in appearance after heating for minutes ◎
The heat discoloration resistance was evaluated by marking the surface with a mark, △ if the surface was significantly yellowed, and × if the surface was significantly yellowing.
【表】
表１の結果から明らかなように、実施例１〜10
の皮膜を有する熱交換器用アルミニウム・フイン
材は、従来技術に対応する比較例１〜４の場合に
比べて、耐食性、成形性および耐熱変色性のいず
れにおいても申し分のないものであつた。
発明の効果
この発明による熱交換器用アルミニウム・フイ
ン材は、上述のように、皮膜形成能を有する合成
樹脂と、合成樹脂とキレートを形成しかつクロ
ム、ジルコニウムまたはチタンよりなる金属の酸
化物、同金属酸ないしその塩、同金属酸エステ
ル、および酸のクロム、ジルコニウムまたはチタ
ン塩よりなる群から選ばれたクロム、ジルコニウ
ムまたはチタン含有化合物の少なくとも１種とを
含みかつ膜厚0.1〜1.0μｍであることを特徴とす
る皮膜を有するもので、従来の無機系皮膜および
有機系皮膜の各長所をそのまゝ生かし、かつ各短
所をそれぞれ克服して、耐食性および成形性に優
れしかもろう付けないし溶接時に焼け焦げを生じ
るおそれがなく、耐熱変色性に優れているうえ
に、従来のように耐食性を向上させるために膜厚
を厚くする必要がなく、従つて皮膜形成のための
処理剤を多く使用する必要がなく、かつ塗布およ
び乾燥工程等に要する時間も短縮することができ
て、非常に経済性が高いという効果を奏する。[Table] As is clear from the results in Table 1, Examples 1 to 10
The aluminum fin material for a heat exchanger having the film had excellent corrosion resistance, moldability, and heat discoloration resistance compared to Comparative Examples 1 to 4 corresponding to the prior art. Effects of the Invention As mentioned above, the aluminum fin material for heat exchangers according to the present invention consists of a synthetic resin having film-forming ability, a metal oxide that forms a chelate with the synthetic resin, and is composed of chromium, zirconium, or titanium. Contains at least one chromium-, zirconium-, or titanium-containing compound selected from the group consisting of metal acids, salts thereof, esters of the same metals, and chromium-, zirconium-, or titanium salts of acids, and has a film thickness of 0.1 to 1.0 μm. It takes advantage of the advantages of conventional inorganic and organic coatings, and overcomes their respective disadvantages, offering excellent corrosion resistance and formability, while also being easy to use without brazing or welding. There is no risk of scorching, and it has excellent heat discoloration resistance, and there is no need to increase the thickness of the film to improve corrosion resistance, unlike conventional methods, so it is not necessary to use a large amount of processing agent to form the film. It has the advantage of being extremely economical, since it eliminates the need for drying, reduces the time required for coating and drying steps, etc.
Claims (1)
キレートを形成しかつクロム、ジルコニウムまた
はチタンよりなる金属の酸化物、同金属酸ないし
その塩、同金属酸エステル、および酸のクロム、
ジルコニウムまたはチタン塩よりなる群から選ば
れたクロム、ジルコニウムまたはチタン含有化合
物の少なくとも１種とを含みかつ膜厚0.1〜1.0μ
ｍであることを特徴とする耐熱変色性に優れた皮
膜を有する熱交換器用アルミニウム・フイン材。 ２ 皮膜形成能を有する合成樹脂が、ポリアクリ
ル酸、ポリビニルアルコールまたはセルロースヒ
ドロキシエチルエーテルである、請求項１記載の
熱交換器用アルミニウム・フイン材。 ３ クロム酸ないしその塩が、３価または６価ク
ロムのクロム酸、クロム酸カリウム、クロム酸ナ
トリウム、重クロム酸カリウムまたは重クロム酸
ナトリウムである、請求項１記載の熱交換器用ア
ルミニウム・フイン材。 ４ 酸のクロム塩が硝酸クロムであり、酸のジル
コニウム塩が硝酸ジルコニウムまたはフツ化ジル
コニウムであり、酸のチタン塩がブツ化チタンま
たは硫酸チタンである、請求項１記載の熱交換器
用アルミニウム・フイン材。[Scope of Claims] 1. A synthetic resin having a film-forming ability, an oxide of a metal that forms a chelate with the synthetic resin and is composed of chromium, zirconium, or titanium, an acid of the same metal, a salt thereof, an acid ester of the same metal, and an acid. chrome,
and at least one chromium-, zirconium-, or titanium-containing compound selected from the group consisting of zirconium or titanium salts, and has a film thickness of 0.1 to 1.0μ.
An aluminum fin material for heat exchangers that has a film with excellent heat discoloration resistance and is characterized by the following characteristics: 2. The aluminum fin material for a heat exchanger according to claim 1, wherein the synthetic resin having film-forming ability is polyacrylic acid, polyvinyl alcohol, or cellulose hydroxyethyl ether. 3. The aluminum fin material for a heat exchanger according to claim 1, wherein the chromic acid or its salt is trivalent or hexavalent chromic chromic acid, potassium chromate, sodium chromate, potassium dichromate, or sodium dichromate. . 4. The aluminum fin for a heat exchanger according to claim 1, wherein the chromium salt of the acid is chromium nitrate, the zirconium salt of the acid is zirconium nitrate or zirconium fluoride, and the titanium salt of the acid is titanium butoxide or titanium sulfate. Material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29556885 | 1985-12-26 | ||
| JP60-295568 | 1985-12-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62247866A JPS62247866A (en) | 1987-10-28 |
| JPH0551355B2 true JPH0551355B2 (en) | 1993-08-02 |
Family
ID=17822323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31369986A Granted JPS62247866A (en) | 1985-12-26 | 1986-12-26 | Sub-surface treatment of aluminum fin material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62247866A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011219871A (en) * | 2004-10-26 | 2011-11-04 | Nippon Parkerizing Co Ltd | Agent for treating metal surface, method for treating surface of metallic material, and surface-treated metallic material |
| JP2011241482A (en) * | 2004-10-26 | 2011-12-01 | Nippon Parkerizing Co Ltd | Surface treatment agent for metal, surface treatment method for metallic material, and surface-treated metallic material |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3013437B1 (en) * | 2013-11-20 | 2015-12-18 | Valeo Systemes Thermiques | COATING FOR HEAT EXCHANGER |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59196782A (en) * | 1983-04-22 | 1984-11-08 | Nippon Seihaku Kk | Manufacture of aluminum material for heat exchanger |
-
1986
- 1986-12-26 JP JP31369986A patent/JPS62247866A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59196782A (en) * | 1983-04-22 | 1984-11-08 | Nippon Seihaku Kk | Manufacture of aluminum material for heat exchanger |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011219871A (en) * | 2004-10-26 | 2011-11-04 | Nippon Parkerizing Co Ltd | Agent for treating metal surface, method for treating surface of metallic material, and surface-treated metallic material |
| JP2011241482A (en) * | 2004-10-26 | 2011-12-01 | Nippon Parkerizing Co Ltd | Surface treatment agent for metal, surface treatment method for metallic material, and surface-treated metallic material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62247866A (en) | 1987-10-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |