JPH0227599B2 - NETSUKOKANBAITAISEIZOHO - Google Patents
NETSUKOKANBAITAISEIZOHOInfo
- Publication number
- JPH0227599B2 JPH0227599B2 JP20357181A JP20357181A JPH0227599B2 JP H0227599 B2 JPH0227599 B2 JP H0227599B2 JP 20357181 A JP20357181 A JP 20357181A JP 20357181 A JP20357181 A JP 20357181A JP H0227599 B2 JPH0227599 B2 JP H0227599B2
- Authority
- JP
- Japan
- Prior art keywords
- heat exchange
- drawless
- film
- exchange medium
- 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.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 25
- 238000004519 manufacturing process Methods 0.000 claims description 17
- 229910052782 aluminium Inorganic materials 0.000 claims description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 13
- 229910000838 Al alloy Inorganic materials 0.000 claims description 9
- 239000000956 alloy Substances 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 description 11
- 238000005260 corrosion Methods 0.000 description 11
- 238000003825 pressing Methods 0.000 description 9
- 238000004381 surface treatment Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000007864 aqueous solution Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- 239000005708 Sodium hypochlorite Substances 0.000 description 2
- 229910001593 boehmite Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 2
- JGJLWPGRMCADHB-UHFFFAOYSA-N hypobromite Chemical compound Br[O-] JGJLWPGRMCADHB-UHFFFAOYSA-N 0.000 description 2
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 2
- 235000019353 potassium silicate Nutrition 0.000 description 2
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 239000010407 anodic oxide Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Treatment Of Metals (AREA)
Description
【発明の詳細な説明】
本発明は熱交換媒体製造法に係り、アルミニウ
ム又はアルミニウム合金をドローレスプレス加工
して熱交換媒体を製造する際に、ドローレスプレ
ス加工工程の前工程においてアルミニウム又はア
ルミニウム合金に表面酸化皮膜を形成しておくこ
とにより、アルミニウム又はアルミニウム合金材
より熱交換媒体を製造する製造能率が一段と向上
し、製造コストは低廉なものとなり、又ドローレ
スプレス加工工程前において形成する表面酸化皮
膜の膜厚を約２〜10mg／ｄm2、としておくことに
より、ドローレスプレス加工工程前に表面酸化皮
膜を形成していてもドローレスプレス加工時に酸
化皮膜の損傷が生じなく、かつ成形加工が容易で
あり、製造歩留りに極めて優れ、低コストなもの
となり、そして成形加工されて組み立てられた熱
交換媒体の熱交換効率は優れており、又耐食性に
も富んだものである熱交換媒体製造法を提供する
ことを目的とする。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a heat exchange medium, and when producing a heat exchange medium by applying drawless press processing to aluminum or an aluminum alloy, the present invention relates to a method for producing a heat exchange medium. By forming a surface oxide film, the manufacturing efficiency of manufacturing heat exchange media from aluminum or aluminum alloy materials is further improved, and manufacturing costs are reduced. By setting the film thickness to approximately 2 to 10 mg/dm 2 , even if a surface oxide film is formed before the drawless press process, the oxide film will not be damaged during the drawless press process, and the forming process will be easy. To provide a method for producing a heat exchange medium, which has an extremely high manufacturing yield and is low cost, and which has excellent heat exchange efficiency and corrosion resistance of the heat exchange medium that is molded and assembled. The purpose is to
従来、アルミニウム又はアルミニウム合金（以
下単にアルミニウムという）製の熱交換媒体は、
アルミニウム材をドローレスプレス加工して熱交
換媒体としての所定の形状に構成した後、アルミ
ニウム材表面を処理することにより、熱交換媒体
としての耐食性があるように製造されている。し
かし、このようなドローレスプレス加工後に表面
処理するといつた製造法は、ドローレスプレス加
工中に付着した油の除去が完全には行なえないの
で表面処理むらが生じ、耐食性及び熱交換効率が
悪く、さらには製造能率も悪く、コスト高のもの
についているといつた欠点がある。 Conventionally, heat exchange media made of aluminum or aluminum alloy (hereinafter simply referred to as aluminum) are
After the aluminum material is formed into a predetermined shape as a heat exchange medium by drawless press processing, the surface of the aluminum material is treated to make it corrosion resistant as a heat exchange medium. However, in manufacturing methods that involve surface treatment after drawless press processing, the oil adhering during drawless press processing cannot be completely removed, resulting in uneven surface treatment, resulting in poor corrosion resistance and heat exchange efficiency. However, they have disadvantages such as poor manufacturing efficiency and high cost.
そこで、製造能率等向上の為に、表面処理後に
ドローレスプレス加工を行なつて熱交換媒体を製
造する方法が考えられるのであるが、単に表面処
理した後にドローレスプレス加工を行なつたので
は、ドローレスプレス加工時に表面処理膜が損傷
してしまい、熱交換媒体としての耐食性及び熱交
換効率が悪くなり、単に表面処理工程をドローレ
スプレス加工工程の前にしておけばすむものでは
ない。 Therefore, in order to improve production efficiency, etc., it is possible to manufacture heat exchange media by performing drawless press processing after surface treatment. However, simply performing drawless press processing after surface treatment does not The surface treatment film is damaged during press processing, resulting in poor corrosion resistance and heat exchange efficiency as a heat exchange medium, and it is not sufficient to simply perform the surface treatment process before the drawless press process.
例えば、アルミニウム材表面に塗膜層を形成し
た後に、この素材をドローレスプレス加工によつ
てフインを製造した場合には、ドローレスプレス
加工工程時にしごき部に割れが生じたり、フレア
ー部が破損したりするので、加工後のフインの熱
交換性能が低下したり、又耐食性が著しく悪くな
つてしまう。 For example, if a paint layer is formed on the surface of an aluminum material and then this material is used to produce fins by drawless press processing, cracks may occur in the ironed part or breakage of the flared part during the drawless press process. As a result, the heat exchange performance of the processed fins deteriorates, and the corrosion resistance deteriorates significantly.
又、アルミニウム材表面に例えばベーマイト皮
膜を形成した後に、ドローレスプレス加工してフ
インを製造した場合には、上記の場合と同様ドロ
ーレスプレス加工時に例えばしごき部に割れが生
じたりするといつた欠点がある。 In addition, when fins are manufactured by drawless pressing after forming a boehmite film on the surface of the aluminum material, there are drawbacks such as cracks occurring at the ironed part during drawless pressing, as in the case described above. .
本発明者は、アルミニウム表面に皮膜形成後に
ドローレスプレス加工を行なつて熱交換媒体を作
ろうとすると、何故に不良な熱交換媒体となるの
かを詳細に検討していたところ、アルミニウム表
面の皮膜の膜厚がドローレスプレス加工と密接な
関係にあることを突き止め、クロメート皮膜、陽
極酸化皮膜、ベーマイト皮膜、水和酸化皮膜
MBV皮膜等の表面処理皮膜の膜厚を約２〜10
mg／ｄm2、としておけば、皮膜形成後にドローレ
スプレス加工を行なつて熱交換媒体を作つても表
面処理皮膜に欠陥は起きず、耐食性及び熱交換効
率が良好な熱交換媒体となり、しかもドローレス
プレス加工前にアルミニウム材の表面処理をでき
るので熱交換媒体の製造能率が向上し、製造コス
トを低廉なものとすることができたのである。又
皮膜量は、少なければ、加工性は良好であるが耐
食性が不良であるため、約５mg／ｄm2以上が必要
となる。 The inventor of the present invention was conducting a detailed study on why a heat exchange medium produced by drawless pressing after forming a film on the aluminum surface resulted in a defective heat exchange medium. It was discovered that the film thickness is closely related to drawless press processing, and it was found that chromate film, anodic oxide film, boehmite film, hydrated oxide film
The thickness of the surface treatment film such as MBV film is approximately 2 to 10
mg/dm 2 , even if a heat exchange medium is produced by drawless pressing after film formation, no defects will occur in the surface treatment film, and the resultant heat exchange medium will have good corrosion resistance and heat exchange efficiency, and will be drawless. Since the surface of the aluminum material can be treated before pressing, the production efficiency of the heat exchange medium can be improved and production costs can be reduced. Further, if the coating amount is small, the processability will be good but the corrosion resistance will be poor, so it is necessary to have a coating amount of about 5 mg/dm 2 or more.
以下、本発明に係る熱交換媒体製造法の実施例
について説明する。 Examples of the method for producing a heat exchange medium according to the present invention will be described below.
実施例 １
JIS1200−H26アルミニウム合金よりなる薄肉
の展伸材（巾500mm、長さ3000mm、厚さ0.110mm）
を、次亜塩素酸ナトリウム水溶液（ClO濃度
200ppm、PH10.6〜10.8）中に約80〜85℃の温度
下で約３分間浸漬処理して展伸材表面に酸化膜を
形成した後、水洗し、次いで濃度0.5％、PH11.2
の水ガラス溶液で約90℃の条件下で約30秒間処理
し、その後シヤワー後侵漬水洗し、そして100℃
で30秒間乾燥処理する。このようにして展伸材表
面に形成された親水性皮膜の膜厚は約５mg／ｄm2
であつた。Example 1 Thin wrought material made of JIS1200-H26 aluminum alloy (width 500mm, length 3000mm, thickness 0.110mm)
, sodium hypochlorite aqueous solution (ClO concentration
After forming an oxide film on the surface of the wrought material by immersing it in 200ppm, PH10.6-10.8) at a temperature of about 80-85℃ for about 3 minutes, it was washed with water, and then the wrought material was washed with water, and the concentration was 0.5%, PH11.2
Treated with a water glass solution for about 30 seconds at about 90℃, then showered, rinsed with water, and then heated to 100℃.
Dry for 30 seconds. The thickness of the hydrophilic film thus formed on the surface of the wrought material is approximately 5 mg/dm 2
It was hot.
次に、上記のようにして親水性皮膜の形成され
た展伸材をフインとして構成する為にドローレス
プレス加工を行ない、フインを形成する。 Next, in order to configure the wrought material on which the hydrophilic film has been formed as described above into a fin, drawless press processing is performed to form a fin.
実施例 ２
実施例１と同様なアルミニウム合金展伸材を、
PH6.5の脱塩水中に約95℃の温度下で約５分間侵
漬処理して展伸材表面に約6.5mg／ｄm2厚の酸化
皮膜を形成した後、乾燥処理する。Example 2 The same aluminum alloy wrought material as in Example 1 was
The material is immersed in demineralized water with a pH of 6.5 at a temperature of about 95° C. for about 5 minutes to form an oxide film with a thickness of about 6.5 mg/dm 2 on the surface of the wrought material, and then dried.
次に、上記のようにして酸化皮膜の形成された
展伸材をドローレスプレス加工し、所望のフイン
を形成する。 Next, the wrought material on which the oxide film has been formed as described above is subjected to drawless pressing to form desired fins.
実施例 ３
実施例１と同様なアルミニウム合金展伸材を、
PH10.6〜10.8の次亜塩素酸ナトリウム水溶液
（CIO濃度200ppm）中に約80〜85℃の温度下で約
５分間浸漬処理して展伸材表面に約８mg／ｄm2厚
の酸化皮膜を形成した後、水洗後乾燥処理する。Example 3 The same aluminum alloy wrought material as in Example 1 was
An oxide film with a thickness of approximately 8 mg/dm 2 is formed on the surface of the wrought material by immersion treatment in a sodium hypochlorite aqueous solution (CIO concentration 200 ppm) with a pH of 10.6 to 10.8 at a temperature of approximately 80 to 85°C for approximately 5 minutes. After forming, it is washed with water and then dried.
次に、上記のようにして酸化皮膜の形成された
展伸材をドローレスプレス加工し、所望の形状の
フインを形成する。 Next, the wrought material on which the oxide film has been formed as described above is subjected to drawless pressing to form fins of a desired shape.
比較例
上記実施例と同様なアルミニウム合金展伸材
を、PH10.5のアンモニア水溶液中に約95℃の温度
下で約3.5分間浸漬処理して展伸材表面に酸化膜
を形成した後、濃度１％、PH11.2の水ガラス溶液
中に約95℃の温度下において約45秒間浸漬処理
し、その後シヤワー後浸漬水洗し、そして乾燥処
理する。このようにして展伸材表面に形成された
皮膜の厚さは約12.5mg／ｄm2であつた。Comparative Example A wrought aluminum alloy material similar to the above example was immersed in an ammonia aqueous solution with a pH of 10.5 at a temperature of about 95°C for about 3.5 minutes to form an oxide film on the surface of the wrought material. The sample is immersed in a 1% water glass solution with a pH of 11.2 at a temperature of about 95° C. for about 45 seconds, then showered, rinsed with water, and dried. The thickness of the film thus formed on the surface of the wrought material was approximately 12.5 mg/dm 2 .
次に、上記のようにして表面皮膜の形成された
展伸材をドローレスプレス加工し、フインを形成
する。 Next, the wrought material on which the surface film has been formed as described above is subjected to drawless pressing to form fins.
上記実施例及び比較例において、ドローレスプ
レス加工して作つたフインを調べると、実施例１
〜３のフインはドローレス加工時に異常は起き
ず、例えばドローレスプレス加工によるしごき部
に割れが生じたり、あるいはフレアー部が破損し
たりするといつたことは起きなく、フインとして
耐食性等に優れた欠陥のないものであつた。これ
に対して比較例のフインでは、ドローレスプレス
加工によつてフレアとびが起き、フインとして欠
陥のあるものとなり、例えば組み立て後のフイン
としての耐食性が不充分なものとなり、又熱交換
効率もあまり良くなく、さらにはドローレスプレ
ス加工の成形加工性も良くなかつた。 In the above Examples and Comparative Examples, when examining the fins made by drawless press processing, Example 1
The fins of ~3 do not have any abnormalities during drawless processing, for example, cracks occur in the ironed part due to drawless press processing, or breakage of the flared part does not occur, and the fins have excellent corrosion resistance. It was something I didn't have. On the other hand, in the fin of the comparative example, flare skipping occurred due to the drawless press processing, resulting in a defective fin, for example, the corrosion resistance of the fin after assembly was insufficient, and the heat exchange efficiency was also low. It was not good, and furthermore, the formability in drawless press processing was also not good.
又、上記実施例のように、特に実施例１の場合
のようにアルミニウム表面に形成しておく表面皮
膜を親水性に富むものとしておくことにより、例
えばアルカル金属又はアルカリ土類金属の次亜塩
素酸塩又は次亜臭素酸塩の水溶液で酸化皮膜を形
成した後、特開昭56−27895の実施例に示される
ような長時間のケイ酸塩処理とは異なりケイ酸塩
溶液で短時間処理した約５mg／ｄm2の酸化皮膜の
場合には、ドローレスプレス加工してフインに成
形した後、トリクレン溶液で脱脂を行なつても、
フイン表面の水濡れ特性はあまり低下せず、極め
て望ましいものである。 In addition, as in the above embodiment, by making the surface film formed on the aluminum surface highly hydrophilic as in the case of embodiment 1, for example, hypochlorite of alkali metals or alkaline earth metals can be removed. After forming an oxide film with an aqueous solution of acid salt or hypobromite, it is treated with a silicate solution for a short time, unlike the long-time silicate treatment shown in the example of JP-A-56-27895. In the case of an oxide film of about 5mg/ dm2 , even if it is degreased with a trichlene solution after being formed into a fin by drawless pressing,
The water wettability of the fin surface does not deteriorate much, which is extremely desirable.
又、展伸材表面に形成した酸化皮膜の膜厚を約
２〜10mg／ｄm2、としておくことにより、ドロー
レスプレス加工性が良好であるのみでなく、熱交
換効率と耐食性の両面において望ましいものであ
る。 In addition, by setting the thickness of the oxide film formed on the surface of the wrought material to about 2 to 10 mg/dm 2 , not only good drawless press workability but also desirable properties are achieved in terms of heat exchange efficiency and corrosion resistance. It is.
上述の如く、本発明に係る熱交換媒体製造法
は、アルミニウム又はアルミニウム合金材に膜厚
が約２〜10mg／ｄm2の表面酸化皮膜を形成した
後、この素材をドローレスプレス加工することに
より熱交換媒体を製造するものであるので、ドロ
ーレスプレス加工によつて熱交換媒体を能率よく
製造でき、その製造コストは低廉なものとなり、
又ドローレスプレス加工前に表面処理皮膜を形成
しているにもかかわらずドローレスプレス加工に
よる欠陥は起きず、例えば耐食性、熱交換効率等
に優れた熱交換媒体を作ることができ、さらには
ドローレスプレス加工性も良好である等の特長を
有する。 As mentioned above, the heat exchange medium manufacturing method according to the present invention involves forming a surface oxide film with a film thickness of about 2 to 10 mg/dm 2 on aluminum or aluminum alloy material, and then applying heat to the material by applying drawless press processing to the material. Since the heat exchange medium is manufactured using drawless press processing, the heat exchange medium can be manufactured efficiently, and the manufacturing cost is low.
In addition, even though a surface treatment film is formed before the drawless press processing, defects do not occur due to the drawless press process, and it is possible to produce a heat exchange medium with excellent corrosion resistance and heat exchange efficiency, and furthermore, the drawless press process It has features such as good workability.
Claims (1)
が約５〜８mg／ｄm2の表面酸化皮膜を形成した
後、この素材をドローレスプレス加工することに
より熱交換媒体を製造することを特徴とする熱交
換媒体製造法。1. Heat exchange medium production characterized by forming a surface oxide film with a film thickness of approximately 5 to 8 mg/dm 2 on aluminum or aluminum alloy material, and then producing a heat exchange medium by subjecting this material to drawless press processing. Law.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20357181A JPH0227599B2 (en) | 1981-12-18 | 1981-12-18 | NETSUKOKANBAITAISEIZOHO |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20357181A JPH0227599B2 (en) | 1981-12-18 | 1981-12-18 | NETSUKOKANBAITAISEIZOHO |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58106396A JPS58106396A (en) | 1983-06-24 |
| JPH0227599B2 true JPH0227599B2 (en) | 1990-06-18 |
Family
ID=16476324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20357181A Expired - Lifetime JPH0227599B2 (en) | 1981-12-18 | 1981-12-18 | NETSUKOKANBAITAISEIZOHO |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0227599B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022106151A1 (en) | 2020-11-18 | 2022-05-27 | Wacker Chemie Ag | Moisture-curable composition for forming cured product with surface coated with top coating layer |
-
1981
- 1981-12-18 JP JP20357181A patent/JPH0227599B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022106151A1 (en) | 2020-11-18 | 2022-05-27 | Wacker Chemie Ag | Moisture-curable composition for forming cured product with surface coated with top coating layer |
| JP2022080386A (en) * | 2020-11-18 | 2022-05-30 | 旭化成ワッカーシリコーン株式会社 | Moisture curable composition for forming hardened substance for coating top coat layer on surface |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58106396A (en) | 1983-06-24 |
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