[go: up one dir, main page]

JPS6162541A - Masking material and masking method using same - Google Patents

Masking material and masking method using same

Info

Publication number
JPS6162541A
JPS6162541A JP18509084A JP18509084A JPS6162541A JP S6162541 A JPS6162541 A JP S6162541A JP 18509084 A JP18509084 A JP 18509084A JP 18509084 A JP18509084 A JP 18509084A JP S6162541 A JPS6162541 A JP S6162541A
Authority
JP
Japan
Prior art keywords
mask
article
masking
vinyl acetate
temperature
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
Application number
JP18509084A
Other languages
Japanese (ja)
Other versions
JPH0513995B2 (en
Inventor
Seiju Maejima
正受 前嶋
Masanori Itou
政律 伊藤
Yoshio Kataoka
片岡 良夫
Ritsuo Nakagawa
中川 律雄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NIPPI KOSAN KK
Fujikura Ltd
Original Assignee
NIPPI KOSAN KK
Fujikura Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NIPPI KOSAN KK, Fujikura Ltd filed Critical NIPPI KOSAN KK
Priority to JP18509084A priority Critical patent/JPS6162541A/en
Publication of JPS6162541A publication Critical patent/JPS6162541A/en
Publication of JPH0513995B2 publication Critical patent/JPH0513995B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Compositions Of Macromolecular Compounds (AREA)
  • Paints Or Removers (AREA)

Abstract

PURPOSE:To provide a masking material for the surface-treatment of metals, having improved chemical characteristics and workability, etc., and composed of an ethylene-vinyl acetate copolymer, an aromatic-modified terpene hydrocarbon resin, and paraffin wax. CONSTITUTION:The objective masking material can be produced by mixing (A) 100pts.(wt.) of an ethylene-vinyl acetate copolymer having a vinyl acetate content of 20-30wt% and a melt flow index of 10-50g/min, (B) 90-110pts. of an aromatic-modified terpene hydrocarbon resin, and (C) 90-110pts. of a paraffin wax. The masking material is melted by heating at 130-160 deg.C, and an article to be surface-treated is preheated at 30-60 deg.C and immersed in the molten masking material to effect the masking of the prescribed part. The masked article is surface-treated by electrochemical or chemical means, and the mask is removed by dipping the article in water heated at 30-50 deg.C.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、金属の表面処理に使用されるマスク材及びそ
れを使用するマスタ方法に関するものである。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a mask material used for surface treatment of metals and a master method using the same.

〔従来の技術) アルマイト、めっき(鍍金)、化成処理、塗装等の金属
表面処理において、所定の部分を隠蔽(マスク)しなけ
ればならい場合が多い。このような場合においてアルマ
イト、電気めっき処理に使用されるマスク材には主とし
て電気絶縁性、耐薬品性が要求され、また化成化処理、
塗装に使用されるマスク材には主として耐薬品性、耐熱
性が要求される。
[Prior Art] In metal surface treatments such as alumite, plating, chemical conversion treatment, and painting, it is often necessary to hide (mask) a predetermined portion. In such cases, the mask materials used for alumite and electroplating are required to have electrical insulation and chemical resistance, and also require chemical conversion treatment,
Mask materials used for painting are primarily required to have chemical resistance and heat resistance.

従来から致多くのマスク材が市販されている。A large number of mask materials have been commercially available.

例えば、塩化ビニル、酢酸ビニル共重合体、ブチルゴム
、シリコンゴム等の樹脂成分をトルエン、キシレン、メ
チル・エチル・ケトン、メチル・イソブチル・ケトン等
の有機溶剤で溶解した常温形のマスク材やサクラクψン
JM I 素のような熱溶融樹脂を主材とする品温形の
マスク材等が広く知られている。
For example, room-temperature mask materials made by dissolving resin components such as vinyl chloride, vinyl acetate copolymers, butyl rubber, and silicone rubber in organic solvents such as toluene, xylene, methyl ethyl ketone, and methyl isobutyl ketone, Temperature-type mask materials that are mainly made of hot-melt resins such as NJM I are widely known.

(5ヲ明か解決しJ:うどする問題点)上記市販されて
いる従来のマスク材は、いずれも物理的或は化学的特性
、作業性、経済性について一1足できるものはbい。例
えば、上記マスク材をアルミニウム製材料の表面の一部
に塗布し、これにアルカリ・クロメ−1−処理を行ない
、その処理後マスク材を離脱しでみると、マスク部へ処
理液の浸込みがあったり、その浸込みにより変色やn食
土成反応が児られる。また、成るものはマスクの離脱跡
に微細で強固な残留がある等の改良すべき点が故多くあ
る。
(Problems to be solved) None of the conventional mask materials on the market are good in terms of physical or chemical properties, workability, and economic efficiency. For example, when the above masking material is applied to a part of the surface of an aluminum material and then subjected to alkali chromate treatment, when the masking material is removed after the treatment, the treatment liquid has seeped into the masking area. If there is some dirt, the seepage may cause discoloration and erodible soil reactions. In addition, there are many points that need to be improved, such as the fact that there are fine and firm residues left behind when the mask comes off.

〔問題点を解決するための手段〕及び〔作用〕本発明は
、上記実情に鑑みてなされたもので、次の組成のマスク
材を提供するものである。
[Means for Solving the Problems] and [Operation] The present invention has been made in view of the above circumstances, and provides a mask material having the following composition.

エチレン酢酸ビニル共重合体(以下rEVAJという。Ethylene vinyl acetate copolymer (hereinafter referred to as rEVAJ).

)           100重同部、芳香族変性テ
ルペン炭化水素樹脂(以下「テルペン樹脂」という。>
   90〜110重量部、パラフィンろう(以下「パ
ラフィン」という。)90〜110重量部。
) 100 parts, aromatic modified terpene hydrocarbon resin (hereinafter referred to as "terpene resin")
90 to 110 parts by weight, and 90 to 110 parts by weight of paraffin wax (hereinafter referred to as "paraffin").

更に本発明は、上記マスク材がその性能を最もよく発揮
し得るマスク方法を提供するもので、その方法は、温度
30℃〜60℃に加熱した被表面処理物品を、温度13
0℃〜160°C(7)EVA、テルペン樹脂、パラフ
ィンからなる溶融マスク液に浸漬して前記物品の所定部
分をマスクし、次に所定部分をマスクした前記物品に電
気化学的或は化学的な表面処理を施し、その表面処理後
、表面処し!I!済の前記物品を温度30℃〜50℃の
温水に浸漬して前記物品の所定部分に施されているマス
クを離脱することを特徴とするものである。
Furthermore, the present invention provides a masking method in which the above-mentioned masking material can best exhibit its performance, and in this method, a surface-treated article heated to a temperature of 30°C to 60°C is heated to a temperature of 13°C.
0°C to 160°C (7) Mask a predetermined part of the article by immersing it in a molten masking liquid consisting of EVA, terpene resin, and paraffin, and then electrochemical or chemical treatment to the article with the predetermined part masked. After surface treatment, surface treatment! I! The method is characterized in that the finished article is immersed in warm water at a temperature of 30° C. to 50° C., and the mask applied to a predetermined portion of the article is removed.

本発明のマスク材の原料となるEVAは、マスク材に密
着性、柔軟性や強靭性を与えるもので、これはエチレン
と酢酸ビニルとのランダム共重合体で、その酢酸ビニル
の含有量は23〜30wt%、メルトインデックスが1
0〜50g/minのらのである。EVAの酢酸ビニル
の含有量が23wt%未満ではパラフィン等との相溶性
が低下し、組成物が各成分に分l11tvるため、均一
な皮膜が得られず好ましくなく、また、30wt%を越
えては作業性が悪くなって、所望の造膜特性が得られな
いこととなって好ましくない。また、メルトインデック
スが100 / m i n未満では膜が強靭となり、
鍍金後剥離作業が困難となって好ましくなく、また、5
0g/minを越えては溶融粘度が低下し、そのため膜
厚が薄くなり、被処理物のエツジ部分に膜切れ現象が生
じ、鍍金むらが生ずることとなって好ましくない。
EVA, which is the raw material for the mask material of the present invention, gives the mask material adhesion, flexibility, and toughness. It is a random copolymer of ethylene and vinyl acetate, and the vinyl acetate content is 23. ~30wt%, melt index is 1
0 to 50 g/min. If the content of vinyl acetate in EVA is less than 23 wt%, the compatibility with paraffin etc. will decrease, and the composition will be divided into each component, making it impossible to obtain a uniform film, which is undesirable. This is undesirable because workability deteriorates and desired film-forming characteristics cannot be obtained. Furthermore, when the melt index is less than 100/min, the film becomes tough;
It is difficult to remove the plating after plating, which is undesirable.
If it exceeds 0 g/min, the melt viscosity decreases, resulting in a thinner film, which causes film breakage at the edges of the object to be treated, resulting in uneven plating, which is undesirable.

本発明のマスク材の原料となるテルペン樹脂は、マスク
材にEVAの特性を一層向上させる性質を与えるもので
、EVA100重世部当り90〜110重半部配合され
る。配合量が90重量部未満では被処理物表面へのマス
ク材の初期接着性が低下し、鍍金中に剥離し易くなるこ
ととなって好ましくなく、また、11013部を越える
とマスク材の膜強度が大きくなり、更には密着性が増し
て剥離困難となって好J:シクない。
The terpene resin, which is a raw material for the mask material of the present invention, gives the mask material properties that further improve the characteristics of EVA, and is blended in an amount of 90 to 110 parts by weight per 100 parts by weight of EVA. If the amount is less than 90 parts by weight, the initial adhesion of the mask material to the surface of the object to be treated will decrease, making it easy to peel off during plating, which is undesirable.If it exceeds 11,013 parts, the film strength of the mask material will decrease. becomes larger and the adhesion is further increased, making it difficult to peel off. Good J: Not good.

また、本発明のマスク材の原料となるパラフィンは、マ
スク材に硬質化を、また、マスク離脱時に優れた剥離性
を与えるもので、EVA100重1部当り90〜11C
1ffi部配合される。配合mが90!!1ffi部未
満ではマスク材の剥離性が低下することとなって好まし
くなく、また、110重量部を越えると膜が脆くなって
、鍍金後マスク材を剥すとき被処理物表面にマスク材が
部分的に残留することとなって好ましくない。
In addition, paraffin, which is a raw material for the mask material of the present invention, gives hardness to the mask material and excellent peelability when the mask is removed, and has a carbon content of 90 to 11 C per 1 part of 100 weight EVA.
1ffi part is blended. Mixture m is 90! ! If it is less than 1ffi part, the removability of the mask material will decrease, which is undesirable, and if it exceeds 110 parts by weight, the film will become brittle, and when the mask material is peeled off after plating, the mask material will be partially on the surface of the object to be treated. This is undesirable as it will remain in the water.

本発明のマスク材は、EVA、テルペン樹脂、パラフィ
ン等の上記3成分の相乗効果によって、パラフィンだけ
では避けることができない機械的脆性を樹脂分の柔軟性
および強靭性でおぎない、一方樹脂分だけでは起りがち
な被マスク物品のシャープエツジコーナ部の膜切れ現象
や長い固転時間をパラフィンがおきなうことにより、強
度、物性面は勿論経済的にも優れたマスク材を提供する
ものである。
Due to the synergistic effect of the above three components such as EVA, terpene resin, and paraffin, the mask material of the present invention uses the flexibility and toughness of the resin to overcome the mechanical brittleness that cannot be avoided with paraffin alone. By eliminating the film breakage phenomenon that tends to occur at the sharp edge corners of masked articles and the long solidification time of paraffin, it is possible to provide a mask material that is excellent not only in terms of strength and physical properties but also economically.

本発明のマスク材は、常温では固形状であり、マスク材
として使用する場合にはこれを130℃〜160℃に加
熱し、溶融して使用するものである。溶融マスク材の濡
1哀が130℃未満の場合には被マスク物品との密着性
が不足し、表面処理時マスク部に表面処理液(例えば電
解液)の没込みが生じ、マスク後冷却が損なわれる。ま
IC1160℃を越える場合にはマスク材の粘度が小さ
くなりすぎ、マスク部に厚さの薄い部分が生じ、信頼性
の高いマスクを1!7ることができない。
The mask material of the present invention is solid at room temperature, and when used as a mask material, it is heated to 130° C. to 160° C. and melted. If the wetting temperature of the molten mask material is less than 130°C, the adhesion to the masked article will be insufficient, and surface treatment liquid (e.g. electrolyte) will sink into the mask portion during surface treatment, resulting in poor cooling after masking. be damaged. If the IC exceeds 1160° C., the viscosity of the mask material becomes too low, resulting in thin parts in the mask portion, making it impossible to make a highly reliable mask.

本発明のマスク材を使用して、物品にマスクを施す場合
には、被マスク物品は、前もって30℃〜60’Cに予
熱しておき、これを温[130℃〜160℃の溶融マス
ク材の浴に浸漬する。このように被マスク物品を予熱し
ておくとマスク材との密着が良く、完全なマスクが出来
る。予熱温度が30℃未満の場合はマスク材の密着性が
小さく、溶融マスク材の温度が130℃未満の場合と同
様に、マスク部に表面!la理液の浸込みが生じて好ま
しくない。また、60℃を越える予熱では後工程におけ
るマスクの剥離性が阻なわれるので好ましくない。
When applying a mask to an article using the mask material of the present invention, the article to be masked should be preheated to 30°C to 60'C, and the molten masking material at 130°C to 160°C Soak in the bath. Preheating the article to be masked in this way allows for better adhesion to the masking material, making it possible to form a complete mask. If the preheating temperature is less than 30°C, the adhesion of the mask material will be low, and as with the case where the temperature of the molten mask material is less than 130°C, the surface of the mask will not adhere to the mask. It is undesirable that the la physical solution will seep in. Moreover, preheating at a temperature exceeding 60° C. is not preferable because it impairs the peelability of the mask in the subsequent process.

ぐ     なお、マスク後冷却のために水冷すること
もさしつかえない。
Note that it is also permissible to cool the mask with water for cooling after use.

以上のようにして、所定部分にマスクを施したる。所定
の表面処理が終了したのら、その物品は30℃〜50℃
の温水に浸漬される。このように温水の浸漬後剥離する
とマスクは非常に簡単にかつ容易に剥離・除去できるし
、マスク部表面もマスク材の残留物のないものとなる。
In the manner described above, a mask is applied to a predetermined portion. After the specified surface treatment is completed, the article is heated to 30℃~50℃
immersed in warm water. If the mask is peeled off after being immersed in hot water in this manner, the mask can be peeled off and removed very easily and the surface of the mask portion will be free of any mask material residue.

しかし、上記温水の温度が30℃未満の場合には剥離か
容易でなく、残留物が残りやすく、また、50°Cを越
える場合には物品との境界面が熱融る状態となって、や
はり剥離作業が困難となり好ましくない。
However, if the temperature of the hot water is less than 30°C, peeling is not easy and residue is likely to remain, and if it exceeds 50°C, the interface with the article will be thermally melted. After all, the peeling work becomes difficult, which is not preferable.

〔発明の効果〕〔Effect of the invention〕

本発明のマスク材を使用する好ましいマスク方法は上述
のとおりであって、マスク材の溶融温度や物品の予熱温
度が上述の範囲外の場合には完全なマスク処理が期待で
きず、また、温水温度が上述の範囲外の場合には簡単か
つ容易なマスク剥離ができないのは言うまでもない。
The preferred masking method using the masking material of the present invention is as described above, and if the melting temperature of the masking material or the preheating temperature of the article is outside the above range, complete masking cannot be expected; Needless to say, if the temperature is outside the above-mentioned range, the mask cannot be removed simply and easily.

〔実施例〕〔Example〕

鉄系チップを有するアルミダイカスト合金ADC12材
の部品に硬質アルマイト及び2次電解としてモリブデン
硫化物の電解含浸を行うべく鉄系チップをマスクするこ
ととし、先ずエチレン酢酸ビニル共重合体く酢酸ビニル
含ff119wt%、メルトインデックス159/m1
n)と芳香族変性テルペン炭化水素樹脂(YS−To−
85>とパラフーrンろう(135°パラフイン)から
なるマスク材をステンレス(台で溶融し、温度130℃
〜160°Cに保持した。
In order to perform hard alumite and electrolytic impregnation with molybdenum sulfide as secondary electrolysis on parts made of aluminum die-cast alloy ADC12 material having iron-based chips, the iron-based chips were masked. %, melt index 159/m1
n) and aromatic modified terpene hydrocarbon resin (YS-To-
85> and paraffin wax (135° paraffin) is melted on a stainless steel stand (temperature 130℃)
It was held at ~160°C.

前記部品を熱風で30℃〜60℃に加熱してから、上記
温度130℃〜160℃に保持した溶融マスク材の八つ
−Cいるスデンレス槽(マスク浴)に浸1青し、5秒後
引き上げ、直ちに水冷してマスク材を凝固させた。
The parts were heated to 30°C to 60°C with hot air, then immersed in a stainless steel bath (mask bath) containing molten mask material held at the above temperature of 130°C to 160°C, and after 5 seconds. It was pulled up and immediately cooled with water to solidify the mask material.

その後1.この部品を20wt%の硫酸浴中、浴温20
℃で、3A/dm’の電流密度をもって、20分間の陽
(セ酸1ヒを行い、充分に水洗後テトラチオモリブデン
酸アンモニウムo、iwt%水溶液中、15℃で、10
0mA/dm’ (D電流密度をもって10分間の陽極
通電を行ない、陽極酸化皮膜の微細孔〈孔径:約100
人、孔数:故百個/μ0)にモリブデン硫化物を含浸し
た。
After that 1. This part was placed in a 20wt% sulfuric acid bath at a bath temperature of 20%.
℃, with a current density of 3 A/dm' for 20 minutes (10 minutes with ceic acid, after thorough washing with water, ammonium tetrathiomolybdate O, iwt% aqueous solution at 15℃, 10 minutes)
The anodic current was applied for 10 minutes at a current density of 0 mA/dm' (D current density), and the fine pores of the anodic oxide film (pore diameter: approx. 100
The number of pores: 100/μ0) was impregnated with molybdenum sulfide.

その後30℃〜50℃の湯中に浸漬し、加温後、マスク
材を部品のチップ部から手で取りはずしたところ、複雑
な形状をしたチップ部面に何らのマスク材の残留もなく
、完全に剥離することができた。なお、マスク効果は完
全で、チップ部面の異常は全く見当らなかった。これを
第1表に示した。
After that, it was immersed in hot water at 30°C to 50°C, and after heating, the mask material was removed from the chip part of the component by hand. There was no mask material left on the chip part, which had a complex shape, and it was completely removed. I was able to peel it off. The mask effect was perfect, and no abnormality was found on the chip surface. This is shown in Table 1.

〔参考例〕[Reference example]

実施例と同一のマスク材を125℃、145℃、165
℃の3種類のマスク浴を準備し、実施例と同一の部品を
25℃、45°C165℃に加温後、直ちに3g!類の
マスク浴にそれぞれに5秒間づつ浸漬後水冷してマスク
部を固めてから、実施例と同一条件で、VA極酸酸化モ
リブデン硫化物電解含浸を行った。
The same mask material as in the example was heated at 125°C, 145°C, and 165°C.
Three types of mask baths were prepared, and the same parts as in the example were heated to 25°C, 45°C, and 165°C, and immediately 3g! The masks were immersed in similar mask baths for 5 seconds each and cooled with water to solidify the mask portions, and then electrolytically impregnated with VA polar acid molybdenum sulfide under the same conditions as in the examples.

この処理俊、マスクを剥離り°るのに、20℃、40℃
、60°Cの湯中にて加4 <”cマスク材をチップ部
から手でとりはずした。これを実施例と比較のため第1
表に併記した。
This process requires 20°C or 40°C to peel off the mask.
The mask material was removed from the chip part by hand in hot water at 60°C.
Also listed in the table.

特許出願人   藤0電線株式会社 日飛興産株式会社Patent applicant: Fuji0 Electric Wire Co., Ltd. Nichihi Kosan Co., Ltd.

Claims (2)

【特許請求の範囲】[Claims] (1)エチレン酢酸ビニル共重合体100重量部、芳香
族変性テルペン炭化水素樹脂90〜110重量部、パラ
フィンろう90〜110重量部、よりなるマスク材。
(1) A mask material comprising 100 parts by weight of ethylene vinyl acetate copolymer, 90 to 110 parts by weight of aromatic modified terpene hydrocarbon resin, and 90 to 110 parts by weight of paraffin wax.
(2)温度30℃〜60℃に加熱した被表面処理物品を
、温度130℃〜160℃のエチレン酢酸ビニル共重合
体、芳香族変性テルペン炭化水素樹脂、パラフィンろう
からなる溶融マスク液に浸漬して前記物品の所定部分を
マスクし、次に所定部分をマスクした前記物品に電気化
学的或は化学的表面処理を施し、その表面処理終了後表
面処理済の前記物品を温度30℃〜50℃の温水に浸漬
して前記物品の所定部分に施されているマスクを離脱す
ることを特徴とするマスク方法。
(2) The surface-treated article heated to a temperature of 30°C to 60°C is immersed in a molten masking liquid consisting of ethylene vinyl acetate copolymer, aromatic modified terpene hydrocarbon resin, and paraffin wax at a temperature of 130°C to 160°C. Then, electrochemical or chemical surface treatment is applied to the article with the prescribed portion masked, and after the surface treatment is completed, the surface-treated article is heated to a temperature of 30°C to 50°C. A method for masking, which comprises removing the mask applied to a predetermined portion of the article by immersing the article in warm water.
JP18509084A 1984-09-04 1984-09-04 Masking material and masking method using same Granted JPS6162541A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18509084A JPS6162541A (en) 1984-09-04 1984-09-04 Masking material and masking method using same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18509084A JPS6162541A (en) 1984-09-04 1984-09-04 Masking material and masking method using same

Publications (2)

Publication Number Publication Date
JPS6162541A true JPS6162541A (en) 1986-03-31
JPH0513995B2 JPH0513995B2 (en) 1993-02-23

Family

ID=16164659

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18509084A Granted JPS6162541A (en) 1984-09-04 1984-09-04 Masking material and masking method using same

Country Status (1)

Country Link
JP (1) JPS6162541A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014002783A1 (en) * 2012-06-25 2014-01-03 Jeインターナショナル株式会社 Application device, removal device, application and removal system as well as application method, removal method, and application and removal method
JP2015056461A (en) * 2013-09-11 2015-03-23 三菱電機株式会社 Method for manufacturing solar cell module, and solar cell module
CN111398001A (en) * 2020-04-01 2020-07-10 中国船舶重工集团公司第七二五研究所 Method for preparing corrosion pit on metal material sample

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6553385B2 (en) * 2015-03-27 2019-07-31 株式会社染宮製作所 Part manufacturing method and molded body manufacturing method using the same.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3647730A (en) * 1969-08-27 1972-03-07 Western Electric Co Masking compositions

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3647730A (en) * 1969-08-27 1972-03-07 Western Electric Co Masking compositions

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014002783A1 (en) * 2012-06-25 2014-01-03 Jeインターナショナル株式会社 Application device, removal device, application and removal system as well as application method, removal method, and application and removal method
JP2015056461A (en) * 2013-09-11 2015-03-23 三菱電機株式会社 Method for manufacturing solar cell module, and solar cell module
CN111398001A (en) * 2020-04-01 2020-07-10 中国船舶重工集团公司第七二五研究所 Method for preparing corrosion pit on metal material sample

Also Published As

Publication number Publication date
JPH0513995B2 (en) 1993-02-23

Similar Documents

Publication Publication Date Title
JPH05278160A (en) Coated material and method for producing the same
SE446348B (en) WANT TO ELECTROPLETATE A THIN COPPER FILM FOR USE IN PRINTED CIRCUITS
JPS6162541A (en) Masking material and masking method using same
US4356069A (en) Stripping composition and method for preparing and using same
JPS59145795A (en) Pretreatment of stainless steel to be plated
US2791553A (en) Method of electroplating aluminum
US3087874A (en) Electropolishing of titanium base alloys
US3276974A (en) Anodizing process for the metal beryllium
US2092130A (en) Anodic cleaning process
US3505181A (en) Treatment of titanium surfaces
US2408220A (en) Stripping of copper from zinc
US3773629A (en) Method of enameling strips and sheets of steel
US3880727A (en) Method of pretreating bands and sheets of steel for one-layer enameling, and electrolytic bath for use in connection therewith
JP2000104021A (en) Aluminum coating material for can lid and method for producing the same
US3075894A (en) Method of electroplating on aluminum surfaces
CA1120420A (en) Process for providing a polymer-electroplate bond of improved strength and stability
JPH0285394A (en) Electroplating method of stainless steel plate
JPS5887296A (en) Method for applying gold plating directly on stainless steel
JPS59200791A (en) Plated steel sheet having single phase and its manufacture
WO2004033762A1 (en) Method for electrolytic coating of materials with aluminium, magnesium or aluminium and magnesium alloys
US2755242A (en) Treatment for chromium plated aluminum
US3260660A (en) Electrolytic stripping of platings from aluminum and zinc articles
JPS59215492A (en) Zinc alloy electroplating bath
CN112760686B (en) Cathode electrolysis activating solution, preparation method and application thereof
US2970091A (en) Method of alloying aluminum and copper

Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term