JPH0513995B2 - - Google Patents
Info
- Publication number
- JPH0513995B2 JPH0513995B2 JP59185090A JP18509084A JPH0513995B2 JP H0513995 B2 JPH0513995 B2 JP H0513995B2 JP 59185090 A JP59185090 A JP 59185090A JP 18509084 A JP18509084 A JP 18509084A JP H0513995 B2 JPH0513995 B2 JP H0513995B2
- Authority
- JP
- Japan
- Prior art keywords
- mask
- temperature
- article
- mask material
- parts
- 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 45
- 239000012188 paraffin wax Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 11
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 11
- 238000004381 surface treatment Methods 0.000 claims description 11
- 239000000126 substance Substances 0.000 claims description 8
- 150000003505 terpenes Chemical class 0.000 claims description 8
- 235000007586 terpenes Nutrition 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 5
- 125000003118 aryl group Chemical group 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 239000013032 Hydrocarbon resin Substances 0.000 claims description 3
- 229920006270 hydrocarbon resin Polymers 0.000 claims description 3
- 230000000873 masking effect Effects 0.000 claims description 3
- 229920005989 resin Polymers 0.000 description 9
- 239000011347 resin Substances 0.000 description 9
- 238000011282 treatment Methods 0.000 description 7
- 238000007747 plating Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000010407 anodic oxide Substances 0.000 description 1
- 238000002048 anodisation reaction Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- ZKKLPDLKUGTPME-UHFFFAOYSA-N diazanium;bis(sulfanylidene)molybdenum;sulfanide Chemical compound [NH4+].[NH4+].[SH-].[SH-].S=[Mo]=S ZKKLPDLKUGTPME-UHFFFAOYSA-N 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Description
〔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ク方法に関するもので
ある。
〔従来の技術〕
アルマイト、めつき（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、電気めつき処理に
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。
従来から数多くのマスク材が市販されている。
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サン繊維素のような熱溶融
樹脂を主材とする高温形のマスク材等が広く知ら
れている。
〔発明が解決しようとする問題点〕
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
て満足できるものはない。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・クロメート処理を行ない、その処
理跡マスク材を離脱してみると、マスク部へ処理
液の浸込みがあつたり、その浸込みにより変色や
腐食生成反応が見られる。また、或るものはマス
クの離脱跡に微細で強固な残留がある等の改良す
べき点が数多くある。
〔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。
エチレン酢酸ビニル共重合体（以下「EVA」
という。）100重量部、
芳香族変形テルペン炭素水素樹脂（以下「テル
ペン樹脂」という。）90〜110重量部、
パラフインろう（以下「パラフイン」という。）
90〜110重量部。
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130℃〜160℃のEVA、テルペン
樹脂、パラフイ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
ことを特徴とするものである。
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％、
メルトインデツクスが10〜50ｇ／minのものであ
る。EVAの酢酸ビニルの含有量が23Wt％未満で
はパラフイン等の相溶性が低下し、組成物が各成
分に分離するため、均一な被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
つて、所望の造膜特性が得られないこととなつて
好ましくない。また、メルトインデツクスが10
ｇ／min未満では膜が強靭となり、鍍金後剥離作
業が困難となつて好ましくなく、また、50ｇ／
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、鍍金むらが生じることとなつて好ましく
ない。
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重量部当り90〜110
重量部配合される。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つて好ましくな
く、また、110重量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
となつて好ましくない。
また、本発明のマスク材の原料となるパラフイ
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重量部
当り90〜110重量部配合される。配合量が90重量
部未満ではマスク材の剥離性が低下することとな
つて好ましくなく、また、110重量部を越えると
膜が脆くなつて、鍍金後マスク材を剥すときう被
処理物表面にマスク材が部分的に残留することと
なつて好ましくない。
本発明のマスク材は、EVA、テルペン樹脂、
パラフイン等の上記３成分の相乗効果によつて、
パラフイ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
ヤープエツジコーナ部の膜切れ現象や長い固乾時
間をパラフインがおぎなうことにより、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。
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。
溶融マスク材の温度が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）の浸込みが生
じ、マスク効果が損なわれる。また、160℃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
マスクを得ることができない。
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、前もつて30℃〜
60℃に予熱しておき、これを温度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
の場合はマスク愛の密着性が小さく、溶融マスク
材の温度が130℃未満の場合と同様に、マスク部
に表面処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。
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。
以上のようにして、所定部分にマスクを施した
物品は、電気化学的或は化学的表処理が施され
る。所定の表面処理が終了したのち、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。しかし、上記温水
の温度が30℃未満の場合には剥離が容易でなく、
残留物が残りやすく、また50℃を越える場合には
物品との境界面が熱融着状態となつて、やはり剥
離作業が困難となり好ましくない。
〔発明の効果〕
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つて、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。
〔実施例〕
鉄系チツ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
系チツ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（酢酸ビニル含有量29Wt％、
メルトインデツクス15ｇ／min）と芳香族変性テ
ルペン炭化素水素樹脂（YS−TO−85）とパラ
フインろう（135°パラフイン）からなるマスク材
をステンレス槽で溶融し、温度130℃〜160℃に保
持した。
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
入つているステンレス槽（マスク浴）に浸漬し、
５秒後引き上げ、直ちに水冷してマスク材を凝固
させた。
その後、この部品を20Wt％の硫酸浴中、浴温
20℃で、3A／ｄm2の電流密度をもつて、20分間
の陽極酸化を行い、充分に水洗後テトラチオモリ
ブデン酸アンモニウム0.1Wt％水溶液中、15℃
で、100ｍＡ／ｄm2の電流密度をもつて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100Å、孔数：数百個／μ0）にモリブデン
硫化物を含浸した。
その後30℃〜50℃の湯中に浸漬し、加温後、マ
スクア材を部品のチツプ部から手で取りはずした
ところ、複雑な形状をしたチツプ部面に何らのマ
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、チツプ部面の異
常は全く見当らなかつた。これを第１表に示し
た。
[Industrial Application Field] The present invention relates to a mask material used for surface treatment of metals and a mask method using the same. [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, mask materials used for alumite and electroplating treatments are required to have electrical insulation and chemical resistance, while mask materials used for chemical conversion treatments and painting are required to have chemical resistance, Heat resistance is required. Many mask materials have been commercially available.
For example, resin components such as vinyl chloride, vinyl acetate copolymer, butyl rubber, silicone rubber, etc. are mixed with toluene,
Room-temperature mask materials dissolved in organic solvents such as xylene, methyl ethyl ketone, and methyl isobutyl ketone, and high-temperature mask materials based on heat-melting resins such as Sakuraxan cellulose are widely known. ing. [Problems to be Solved by the Invention] None of the above-mentioned commercially available conventional mask materials is satisfactory in terms of physical or chemical properties, workability, and economic efficiency. For example, if you apply the above mask material to a part of the surface of an aluminum material, perform alkali chromate treatment on it, and then remove the mask material that leaves the treatment, you will notice that the treatment liquid has seeped into the mask area. , discoloration and corrosion formation reactions are observed due to its penetration. In addition, there are many points that need to be improved, such as in some cases, there are fine and firm residues left behind after the mask has left the mask. [Means for solving the problem] and [Operation] The present invention has been made in view of the above circumstances, and
A mask material having the following composition is provided. Ethylene vinyl acetate copolymer (hereinafter referred to as “EVA”)
That's what it means. ) 100 parts by weight, aromatic modified terpene carbon hydrogen resin (hereinafter referred to as "terpene resin") 90 to 110 parts by weight, paraffin wax (hereinafter referred to as "paraffin")
90-110 parts by weight. Furthermore, the present invention provides a mask method in which the above-mentioned mask material can best exhibit its performance,
The method involves immersing a surface-treated article heated to a temperature of 30°C to 60°C in a molten masking liquid made of EVA, terpene resin, and paraffin at a temperature of 130°C to 160°C to mask a predetermined portion of the article; Next, electrochemical or chemical surface treatment is applied to the article with a predetermined portion masked, and after the surface treatment, the surface-treated article is immersed in hot water at a temperature of 30°C to 50°C to remove the surface of the article. It is characterized by removing the mask applied to a predetermined area. EVA, which is the raw material for the mask material of the present invention, gives the mask material adhesion, flexibility, and toughness.
This is a random copolymer of ethylene and vinyl acetate, and its vinyl acetate content is 23-30Wt%.
The melt index is 10 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 separate into each component, making it impossible to obtain a uniform coating, which is undesirable. If it exceeds 30 Wt%, the workability will deteriorate. This is undesirable because the film-forming properties deteriorate and the desired film-forming properties cannot be obtained. Also, the melt index is 10.
If it is less than 50g/min, the film will become tough and peeling after plating will become difficult, which is not preferable.
If the melt viscosity exceeds 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. The terpene resin, which is the raw material for the mask material of the present invention, gives the mask material properties that further improve the characteristics of EVA, and has a concentration of 90 to 110% per 100 parts by weight of EVA.
Parts by weight are added. 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,
This is undesirable because it tends to peel off during plating, and when it exceeds 110 parts by weight, the film strength of the mask material increases, and furthermore, the adhesiveness increases and it becomes difficult to peel off, which is undesirable. Further, paraffin, which is a raw material for the mask material of the present invention, imparts hardness to the mask material and excellent peelability when the mask is removed, 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 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 surface of the object to be treated may be damaged. This is not preferable because the mask material partially remains. The mask material of the present invention includes EVA, terpene resin,
Due to the synergistic effect of the above three components such as paraffin,
The flexibility and toughness of the resin overcomes the mechanical brittleness that cannot be avoided with paraffin alone.
On the other hand, paraffin eliminates the film breakage at the sharp edge corners of masked items that tends to occur with resin alone, and the long drying time, thereby providing a mask material that is not only superior in terms of strength and physical properties but also economically. It is. The mask material of the present invention is solid at room temperature,
When used as a mask material, the temperature is 130℃~
It is used by heating it to 160℃ and melting it.
If the temperature of the molten mask material is less than 130° C., the adhesion to the masked article will be insufficient, and a surface treatment solution (for example, electrolyte) will seep into the mask portion during surface treatment, impairing the mask effect. In addition, if the temperature exceeds 160℃, the viscosity of the mask material will become too small.
A thin portion occurs in the mask portion, making it impossible to obtain a highly reliable mask. When applying a mask to an article using the mask material of the present invention, the article to be masked must be heated at 30°C to
It is preheated to 60°C and immersed in a bath of molten mask material at a temperature of 130°C to 160°C. 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 will be low, and as in the case where the temperature of the molten mask material is less than 130°C, the surface treatment liquid will seep into the mask, which is undesirable. Further, preheating at a temperature exceeding 60° C. is not preferable because it impedes the removability of the mask in the subsequent process. Note that water cooling may be used for cooling after the mask. As described above, the article with a mask applied to a predetermined portion is subjected to electrochemical or chemical surface treatment. After the specified surface treatment is completed, the article is
Immersed in warm water between 30℃ and 50℃. 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. However, if the temperature of the hot water is below 30℃, peeling is not easy.
Residues tend to remain, and if the temperature exceeds 50°C, the interface with the article becomes thermally fused, making peeling work difficult, which is not preferable. [Effects of the Invention] The preferred mask method using the mask material of the present invention is as described above, and if the melting temperature of the mask material or the preheating temperature of the article is outside the above range, complete mask processing cannot be expected. Furthermore, it goes without saying that if the hot water temperature is outside the above-mentioned range, the mask cannot be removed simply and easily. [Example] Aluminum die-casting alloy with iron-based chips
In order to perform hard alumite and electrolytic impregnation with molybdenum sulfide as secondary electrolysis on the parts made of ADC12 material, we decided to mask the iron chips.
A mask material consisting of melt index 15g/min), aromatic modified terpene hydrocarbon resin (YS-TO-85), and paraffin wax (135° paraffin) is melted in a stainless steel tank and maintained at a temperature of 130℃ to 160℃. did. After heating the said parts to 30℃~60℃ with hot air,
Immerse in a stainless steel tank (mask bath) containing molten mask material maintained at the above temperature of 130°C to 160°C,
After 5 seconds, it was pulled up and immediately cooled with water to solidify the mask material. After that, this part was placed in a 20Wt% sulfuric acid bath at the bath temperature.
Anodic oxidation was carried out at 20℃ for 20 minutes at a current density of 3A/ dm2 , and after thorough washing with water, anodization was carried out at 15℃ in a 0.1Wt% aqueous solution of ammonium tetrathiomolybdate.
Then, anode current was applied for 10 minutes at a current density of 100 mA/dm 2 to impregnate the fine pores (pore diameter: approximately 100 Å, number of pores: several hundred pores/μ 0 ) of the anodic oxide film with molybdenum sulfide. After that, it was immersed in hot water at 30°C to 50°C, heated, and then removed by hand from the tip of the part. When the mask material was removed by hand from the chip, which had a complex shape, there was no mask material left on the chip, and it was completely removed. I was able to peel it off. The mask effect was perfect, and no abnormalities were found on the chip surface. This is shown in Table 1.
【表】【table】
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℃、65℃に加温後、直ちに３種類
のマスク浴にそれぞれ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、陽
極酸化、モリブデン硫化物電解含新を行つた。
この処理後、マスクを剥離するのに、20℃、40
℃、60℃の湯中にて加温後マスク材をチツプ部か
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。
The same mask material as in the example was heated at 125℃, 145℃, and 165℃.
Three types of mask baths were prepared at ℃, and the same parts as in the example were heated to 25℃, 45℃, and 65℃, and then immediately immersed in the three types of mask baths for 5 seconds each, and then cooled with water to remove the mask part. After hardening, anodic oxidation and molybdenum sulfide electrolytic impregnation were performed under the same conditions as in the example. After this treatment, the mask must be peeled off at 20°C and 40°C.
After heating in hot water at 60°C, the mask material was removed from the tip by hand. This is also listed in Table 1 for comparison with Examples.
Claims (1)
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、パラフイ
ンろう90〜110重量部よりなるマスク材。 ２ 温度30℃〜60℃に加熱した被表面処理物品
を、温度130℃〜160℃の酢酸ビニル含有量が
23Wt％〜30Wt％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、パラフイ
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。[Scope of Claims] 1 Consists of 100 parts by weight of an ethylene vinyl acetate copolymer with a vinyl acetate content of 23 to 30 Wt%, 90 to 110 parts by weight of an aromatic modified terpene hydrocarbon resin, and 90 to 110 parts by weight of paraffin wax. Mask material. 2 The surface-treated article heated to a temperature of 30°C to 60°C is heated to a temperature of 130°C to 160°C with a vinyl acetate content of
A predetermined portion of the article is masked by immersing it in a molten masking liquid consisting of 23 Wt% to 30 Wt% ethylene-vinyl acetate copolymer, aromatic modified terpene hydrocarbon resin, and paraffin wax, and then the predetermined portion is masked. Electrochemical or chemical surface treatment is applied to the article, and after the surface treatment is completed, the surface-treated article is immersed in hot water at a temperature of 30°C to 50°C to remove the mask applied to a predetermined part of the article. A mask method characterized by:
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 JPS6162541A (en) | 1986-03-31 |
| JPH0513995B2 true 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 (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016185626A (en) * | 2015-03-27 | 2016-10-27 | 株式会社染宮製作所 | Part production method, and compact production method using the same |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5695110B2 (en) * | 2012-06-25 | 2015-04-01 | Ｊｅインターナショナル株式会社 | Removal device, coating removal system, removal method, and coating removal method |
| JP6184263B2 (en) * | 2013-09-11 | 2017-08-23 | 三菱電機株式会社 | Manufacturing method of 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 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3647730A (en) * | 1969-08-27 | 1972-03-07 | Western Electric Co | Masking compositions |
-
1984
- 1984-09-04 JP JP18509084A patent/JPS6162541A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3647730A (en) * | 1969-08-27 | 1972-03-07 | Western Electric Co | Masking compositions |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016185626A (en) * | 2015-03-27 | 2016-10-27 | 株式会社染宮製作所 | Part production method, and compact production method using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6162541A (en) | 1986-03-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| SE446348B (en) | WANT TO ELECTROPLETATE A THIN COPPER FILM FOR USE IN PRINTED CIRCUITS | |
| JPH0513995B2 (en) | ||
| JPH04263100A (en) | Method for electrolyzing to separate metal film from titanium base metal supporting body | |
| US2791554A (en) | Method of electrodepositing zinc | |
| JPS59145795A (en) | Pretreatment of stainless steel to be plated | |
| US4356069A (en) | Stripping composition and method for preparing and using same | |
| US2791553A (en) | Method of electroplating aluminum | |
| US3268422A (en) | Electroplating bath containing aluminum and manganese-bearing materials and method of forming aluminummanganese alloy coatings on metallic bases | |
| US2092130A (en) | Anodic cleaning process | |
| US3505181A (en) | Treatment of titanium surfaces | |
| FR2493349A1 (en) | PROCESS FOR OBTAINING CORROSION-RESISTANT GOLD COATINGS ON A SUBSTRATE AND COATINGS OF GOLD HARDENED IN PARTICULAR BY COBALT | |
| US2966448A (en) | Methods of electroplating aluminum and alloys thereof | |
| JPS61204393A (en) | Production of nickel coated stainless steel strip | |
| JPH1088104A (en) | Surface treatment agent for lead frame or tab and surface treatment thereof | |
| US3773629A (en) | Method of enameling strips and sheets of steel | |
| US1827142A (en) | Process for the treatment of aluminum | |
| US3075894A (en) | Method of electroplating on aluminum surfaces | |
| JPS5887296A (en) | Method for applying gold plating directly on stainless steel | |
| JPH1112751A (en) | Method for electroless plating with nickel and/or cobalt | |
| US3769187A (en) | Electrophoretic coating of aluminum and tin articles | |
| JPS5914100B2 (en) | Electroless nickel plating method for high nickel chromium alloys | |
| JPS5914557B2 (en) | Metsuki method | |
| DE636664C (en) | Process for the pretreatment of aluminum and its alloys in order to produce firmly adhering galvanic coatings | |
| JPS59140388A (en) | Pretreatment of stainless steel to be plated | |
| JP2000104021A (en) | Aluminum coating material for can top and preparation thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |