JPS5833904B2 - Paint for protecting metal plates - Google Patents
Paint for protecting metal platesInfo
- Publication number
- JPS5833904B2 JPS5833904B2 JP54023781A JP2378179A JPS5833904B2 JP S5833904 B2 JPS5833904 B2 JP S5833904B2 JP 54023781 A JP54023781 A JP 54023781A JP 2378179 A JP2378179 A JP 2378179A JP S5833904 B2 JPS5833904 B2 JP S5833904B2
- Authority
- JP
- Japan
- Prior art keywords
- paint
- coating
- metal plate
- processing
- resin
- 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
Links
Landscapes
- Paints Or Removers (AREA)
- Lubricants (AREA)
Description
【発明の詳細な説明】
この発明は金属板の腐蝕や傷の発生を防止するとともに
耐摩擦性を大きく改善しうる金属板保護用塗料に関する
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a paint for protecting metal plates that can prevent corrosion and scratches on metal plates and greatly improve friction resistance.
=般ニステンレス板、アルミニウム板、鋼板などの金属
板はプレスないしロール加工により抜抜き、曲げ、絞り
などの冷間塑性加工されて、自動車関係、家庭電化製品
関係、厨房関係などの種々の用途に供されている。= Metal plates such as general stainless steel plates, aluminum plates, and steel plates are subjected to cold plastic processing such as punching, bending, and drawing by press or roll processing, and are used for various purposes such as automobiles, home appliances, and kitchens. It is served to.
従来、これらの金属製品を製造するに当たり、冷間塑性
加工前の保管中ふ・よび加工中の金属板の腐蝕やひっか
き傷の発生を防止して加工後に必要なパフ研摩のような
後処理工程をできるだけ簡略化する工夫や、金属板の耐
摩耗性を改善し加工中での金属板の割れないし亀裂を抑
止して加工性を良くする工夫がなされてきた。Conventionally, when manufacturing these metal products, post-processing steps such as puff polishing are required after processing to prevent corrosion and scratches on the metal plate during storage and processing before cold plastic processing. Efforts have been made to simplify the process as much as possible, to improve the wear resistance of the metal plate, to prevent the metal plate from cracking or cracking during processing, and to improve workability.
ところが古くから採用されてきたこれらの方法には金属
板の腐蝕やひっかき傷の防止と耐摩擦性ないし加工性の
改善とに共に有効なものはなかった。However, none of these methods that have been used for a long time have been effective in preventing corrosion and scratches on metal plates and improving their abrasion resistance or workability.
たとえば腐蝕やひっかき傷を防ぐことを主目的としたも
のに一般のストリッパブルペイントや粘着シートを金属
板表面に施こす方法が知られているが、これでは加工時
の耐摩擦性はほとんど期待できず、むしろ加工時の摩擦
熱で塗膜ないしシートの粘着層の粘度が低下すると摩擦
抵抗が犬になり加工性を逆に損なうおそれがあった。For example, it is known that the main purpose of preventing corrosion and scratches is to apply general strippable paint or an adhesive sheet to the surface of a metal plate, but this method cannot be expected to provide much abrasion resistance during processing. On the contrary, if the viscosity of the adhesive layer of the coating film or sheet decreases due to frictional heat during processing, the frictional resistance will increase and there is a risk that the processability will be adversely affected.
また耐摩擦性を改善するに有利な手段として金属板表面
に動植物油などの液状の潤滑剤を塗布する方法が知られ
ているが、この方法では保管中ないし加工中の腐蝕やひ
っかき傷の防止にはほとんど効力を示さなかった。In addition, a method of applying a liquid lubricant such as animal or vegetable oil to the surface of a metal plate is known as an advantageous means of improving friction resistance, but this method prevents corrosion and scratches during storage or processing. showed little efficacy.
そこで近年ストリッパブルペイントとしてポリ塩化ビニ
ルオルガノゾルやその他特殊な樹脂ないし樹脂配合物を
使用して塗膜にある程度の潤滑性を持たせたり、lた通
常の塗膜ないしシートの表面にさらに液状の潤滑剤を塗
布するなどの改良法が種々案出されてきた。Therefore, in recent years, polyvinyl chloride organosol and other special resins or resin compounds have been used as strippable paints to give the paint film a certain degree of lubricity. Various improvements have been devised, such as applying lubricants.
しかしながらいずれの方法をみても金属板の腐蝕やひっ
かき傷の防止と耐摩擦性の改善とを共に充分に満足しう
るものとはいえず、一方の特性を満足すれば他方の特性
にやや難点が生じるという傾向があった。However, none of these methods can fully satisfy both the prevention of corrosion and scratches on metal plates and the improvement of abrasion resistance, and if one property is satisfied, the other property may have some drawbacks. There was a tendency for it to occur.
しかもこれら従来方法の多くは金属板に施こされたもの
を冷間塑性加工後に除去する際の作業性に著るしく劣る
欠点があった。Moreover, many of these conventional methods have the disadvantage that the workability is significantly inferior when removing a metal plate after cold plastic working.
たとえば粘着シートを使用したものではその剥離作業に
人手を要し煩雑となるきらいがあり、また潤滑油では清
浄にすることが極めて難しくなる。For example, when an adhesive sheet is used, the peeling process tends to be laborious and cumbersome, and it is extremely difficult to clean using lubricating oil.
またその他の欠点としてたとえばポリ塩化ビニルオルガ
ノゾルを使用したものでは焼付けに200〜400℃の
高温を必要とするため、鋼板に被覆するときにはストレ
ッチャ・ストレインなる熱処理のためのひずみ模様が発
生して製品の肌荒れや腐蝕が促進される原因となるなど
の問題を有していた。Another disadvantage is that, for example, products using polyvinyl chloride organosol require high temperatures of 200 to 400°C for baking, so when coating steel plates, strain patterns due to heat treatment called stretcher strain occur, resulting in the product being damaged. This has led to problems such as roughening of the skin and accelerated corrosion.
この発明の目的は主として金属板の腐蝕や、すり傷ひっ
かき傷の防止と耐摩擦性の向上とを共に満足させうる金
属板保護用塗料を提供せんとするものであり、また同時
に金属板表面に施こされた後冷間塑性加工後に人手を要
することなく簡単に洗浄、除去できその他従来方法にみ
られたような欠点の少ない金属板保護用塗料を提供せん
とするものである。The purpose of the present invention is to provide a paint for protecting metal plates that is capable of preventing corrosion, abrasion, and scratches on metal plates as well as improving abrasion resistance. It is an object of the present invention to provide a paint for protecting a metal plate that can be easily cleaned and removed without requiring any manual labor after cold plastic working and has few other drawbacks seen in conventional methods.
この発明は、上記の目的を達成するために鋭意検討を続
けた結果、見出されたものであり、その要旨とするとこ
ろは冷間塑性加工前の金属板表面に施こされ上記の加工
後に洗浄液により容易に除去されうる塗料であって、こ
の塗料中に塗料樹脂に対し難溶ないし非相溶性でかつ加
工時の摩擦熱により溶融しうるような融点を有する潤滑
剤を、塗料樹脂分との合計量に対し50重重量上り少な
い割合で混入させたことにある。This invention was discovered as a result of intensive studies to achieve the above object. A paint that can be easily removed by a cleaning solution, and in which a lubricant that is poorly soluble or incompatible with the paint resin and has a melting point that can be melted by frictional heat during processing is added to the paint resin component. This is due to the fact that it was mixed in at a rate that was 50% less than the total amount.
この発明において用いられる加工時の摩擦熱によって溶
融しうるような融点を有する潤滑剤とは、大気温度によ
っても異なるが一般に10〜40℃もしくはそれ以上の
融点を有する常温で固形のものである。The lubricant used in this invention, which has a melting point that can be melted by frictional heat during processing, is generally a solid at room temperature and has a melting point of 10 to 40°C or higher, although it varies depending on the atmospheric temperature.
これとは異なる常温で液状の潤滑剤であるマシン油、な
たね油、シリコーン油などではこれが金属板と塗膜との
界面に移行したときに両者の接着性を著るしく損ない保
管中ないし加工中に塗膜が簡単に剥離しやすくなるから
使用できない。On the other hand, machine oil, rapeseed oil, silicone oil, etc., which are liquid lubricants at room temperature, can significantly impair the adhesion between the metal plate and the coating film during storage or processing. It cannot be used because the coating film easily peels off.
これら潤滑剤のもつとも好ましい具体例としてカカオ脂
、木ろう、やし油、牛脂、豚腸などの融点の巾が比較的
広い天然の油脂を拳げることかできる。Preferred examples of these lubricants include natural fats and oils having a relatively wide melting point range, such as cacao butter, wax, coconut oil, beef tallow, and pig intestines.
捷たn−オクタデカン、n−ヘキサデカンなどのパラフ
ィン類、ラウリン酸、ステアリン酸、オレイン酸などの
脂肪酸、ミリスチン酸メチル、ステアリン酸エチルなど
の脂肪酸エステル、ステアリン酸アミドのような脂肪酸
アミド類なども使用できる。Paraffins such as cleaved n-octadecane and n-hexadecane, fatty acids such as lauric acid, stearic acid, and oleic acid, fatty acid esters such as methyl myristate and ethyl stearate, and fatty acid amides such as stearic acid amide are also used. can.
この発明においてはこのような潤滑剤のなかから使用す
る塗料樹脂分に対し難溶性であるかもしくは非相溶性で
あるものを選定しなければならない。In the present invention, a lubricant must be selected from among these lubricants that is poorly soluble or incompatible with the resin component of the paint used.
なぜなら相溶性の潤滑剤を使用するとこれが可塑剤的に
作用して塗膜強度を低下させ金属板のすり傷やひっかき
傷の防止に問題を生じさせるからであり、また塗膜を形
成した金属板を重ね合せて保管する際に塗膜間でブロッ
キングしてし15などの支障をきたすkそれがある。This is because if a compatible lubricant is used, it will act like a plasticizer and reduce the strength of the coating film, causing problems in preventing scratches and scratches on the metal plate. When the paints are stored on top of each other, blocking may occur between the coatings, causing problems such as 15.
このようにこの発明にむいては記述したような適度な融
点釦よび使用する塗料樹脂分に対し難溶性ないし非相溶
性の潤滑剤を選定、使用することによって、塗膜に良好
な潤滑能を附与するとともに、金属板に対する接着性や
塗膜強度その他保護塗膜として必要な機能を維持させ、
以って金属板の腐蝕や傷の発生防止と耐摩擦性の向上を
同時に達成せんとするものである。In this way, for the present invention, by selecting and using a lubricant with an appropriate melting point as described above and a lubricant that is poorly soluble or incompatible with the paint resin used, good lubrication ability can be imparted to the paint film. At the same time, it maintains adhesion to metal plates, coating strength, and other functions necessary as a protective coating.
This aims to simultaneously prevent the occurrence of corrosion and scratches on the metal plate and improve its abrasion resistance.
この発明に於いて潤滑剤の含有量は塗料樹脂分との合計
量に対し50重重量上り少ない割合とすべきであり、こ
の量を越えて使用すると塗膜強度が極端に劣り金属板の
腐蝕や傷の発生防止に問題が生じてくる。In this invention, the lubricant content should be 50% less by weight than the total amount including the paint resin, and if it is used in excess of this amount, the strength of the coating will be extremely poor and the metal plate will corrode. Problems arise in preventing the occurrence of scratches.
一方便用量かあ筐りに少なすぎると潤滑防止機能が充分
でなくなるから、一般には2重量多より多く50重重量
上り少ない割合、好適には2〜30重量多の量多内とす
るのがよい。On the other hand, if the amount of stool is too small, the lubrication prevention function will not be sufficient, so generally the ratio should be more than 2 weights and 50 weights less, preferably 2 to 30 weights more. good.
この発明においてこのような潤滑剤を混入させる塗料と
しては、一般に市販されているワニス類、ラッカー類の
ほか塗料樹脂分がポリアクリル系樹脂、ポリビニルアル
コール、ポリ酢酸ビニル、ポリアセタール系樹脂、セル
ロース系樹脂、ポリスチレン、ポリアミド樹脂、ポリウ
レタン、ポリエステル樹脂、アルキッド樹脂など一般の
有機溶剤、水、アルカリ水溶液などの洗浄液で容易に洗
浄除去できるものであれば広く包含される。In this invention, paints to which such lubricants are mixed include generally commercially available varnishes and lacquers, as well as paints whose resin content is polyacrylic resin, polyvinyl alcohol, polyvinyl acetate, polyacetal resin, and cellulose resin. , polystyrene, polyamide resin, polyurethane, polyester resin, alkyd resin, etc., as long as they can be easily washed and removed with a cleaning solution such as general organic solvents, water, and aqueous alkaline solutions.
この塗料中には従来公知の添加剤、たとえば防さび剤、
防腐剤、消泡剤などが配合されたものであってもよいO
この発明の保護塗料を金属板表面に施こすには、一般の
塗布手段たとえばスプレー リバースロールコータ−、
キスコーター、フローコーター、ナイフコーター、刷毛
塗りなどの方法を採用して行なえばよく、塗布後乾燥す
ると潤滑剤が均一に分散混入された塗膜が形成される。This paint contains conventionally known additives, such as rust preventives,
Preservatives, antifoaming agents, etc. may be added. In order to apply the protective coating of this invention to the surface of a metal plate, general coating methods such as spray, reverse roll coater,
The coating may be carried out by using a kiss coater, flow coater, knife coater, brush coating, or the like, and when dried after coating, a coating film in which the lubricant is uniformly dispersed and mixed is formed.
この塗膜は金属板表面への良好な密着性と充分な塗膜強
度とを有するものであり、一般のストリッパブル塗料と
同様に金属板の腐蝕やすり傷ないしひっかき傷の発生を
効果的に抑止する。This coating has good adhesion to the metal plate surface and sufficient coating strength, and like general strippable paints, it effectively prevents corrosion, abrasions, and scratches on the metal plate. do.
また混入された潤滑剤によって塗膜自体に潤滑能が附与
されたものとなり、これは加工時の耐摩擦性を大きく改
善して深絞りなどの苛酷な加工条件に対しても金属板の
割れないし亀裂を防ぎ加工性の向上に寄与する。In addition, the lubricant added gives the coating film itself a lubricating ability, which greatly improves the friction resistance during processing and prevents metal plates from cracking under severe processing conditions such as deep drawing. It also prevents cracks and contributes to improved workability.
一方深絞りなどの冷間塑性加工後には通常の有機溶剤、
水、アルカリ水溶液などの洗浄液中に浸漬することによ
って簡単に洗浄除去され、この際潤滑剤は塗膜とともに
金属板表面から離脱し従来の液状潤滑剤を単独で使用す
る場合のように除去作業に問題をきたすことはない。On the other hand, after cold plastic processing such as deep drawing, ordinary organic solvents,
The lubricant is easily removed by immersion in a cleaning solution such as water or an aqueous alkaline solution, and at this time the lubricant separates from the metal plate surface along with the coating, making it difficult to remove the lubricant as in the case of using conventional liquid lubricants alone. It won't cause any problems.
なおこのような効果を発揮させるに必要な塗膜厚みは通
常3〜50μ、好tL<は5〜15μであり、塗膜厚み
が薄すぎると腐蝕や傷の防止効果が劣り、また厚くしす
ぎると加工後の洗浄除去に要する時間が長くなるなどの
不都合が生じるからいずれも好tL<ない。The coating thickness required to exhibit this effect is usually 3 to 50μ, and preferably tL< is 5 to 15μ; if the coating thickness is too thin, the corrosion and scratch prevention effect will be poor, and if it is too thick. Both of these methods are not preferable, since the time required for cleaning and removal after processing becomes longer.
以上詳述したとおり、この発明は塗料樹脂分に対し難溶
ないし非相溶性でかつ加工時の摩擦熱により溶融しうる
ような融点を有する潤滑剤を特定割合で混入してなる潤
滑性に優れかつ洗浄性の良好な塗膜を形成しうる金属板
保護用塗料を要旨とするものであり、これによれば金属
板の腐蝕や傷の発生防止と金属板の耐摩擦性の向上とを
共に満足させることができ、加工後の洗浄作業やパフ研
摩作業などの後処理工程を簡略化できるし、深絞りなど
の加工性を大巾に改善できる利点が得られるO
以下にこの発明の実施例を記載する。As detailed above, this invention has excellent lubricity by mixing a specific proportion of a lubricant that is poorly soluble or incompatible with the paint resin and has a melting point that can be melted by frictional heat during processing. The objective is to provide a coating for protecting metal plates that can form a coating film with good washability.This coating prevents corrosion and scratches on metal plates and improves the abrasion resistance of metal plates. The following are examples of the present invention. Describe.
以下において部とあるのは重量部を意味するものとする
。In the following, parts shall mean parts by weight.
実施例 1
アクリル酸ブチル40部、メタクリル酸メチル50部お
よびスチレン10部からなる共重合体100部に対しn
−オクタデカン(融点28℃)10部を添加してキシレ
ンの存在下でロール混練りし、固形分が24重量量多粘
度が8ポイズのこの発明の金属板保護用塗料を得た。Example 1 n per 100 parts of a copolymer consisting of 40 parts of butyl acrylate, 50 parts of methyl methacrylate and 10 parts of styrene.
- 10 parts of octadecane (melting point 28 DEG C.) was added and kneaded with a roll in the presence of xylene to obtain a paint for protecting metal plates of the present invention having a solid content of 24 weight and a multiviscosity of 8 poise.
この塗料を用いてJIS−03310SPC−級ブライ
ト鋼板(0,5fl厚み)に乾燥厚みが10μとなるよ
うに塗布乾燥して潤滑性を有する保護塗膜を形成した。This coating material was applied to a JIS-03310 SPC-grade bright steel plate (0.5 fl thickness) to a dry thickness of 10 microns and dried to form a protective coating film having lubricity.
この塗膜は鋼板表面に対し密着性が良好で塗膜強度も表
面硬度が4Hという満足できるものであり、加工前の保
管中もしくは加工中の腐蝕や傷の発生を充分に防止でき
るものであった。This coating has good adhesion to the surface of the steel plate, and has satisfactory coating strength and surface hardness of 4H, and can sufficiently prevent corrosion and scratches during storage before processing or during processing. Ta.
次にこの塗膜による加工性の良否を調べるため、スウイ
フト式深絞り試験により金属板底部が割れる會での絞り
深さを測定した。Next, in order to examine the workability of this coating film, the drawing depth at which the bottom of the metal plate cracked was measured using a Swift deep drawing test.
なお試験片の直径は100B(円板に切り抜く)、ダイ
ス孔直径は53.64M、ダイス肩半径は13.0m、
ポンチ直径は501F/IL釦よびポンチ底部丸味半径
は511WLであつ九
測定結果は絞り深さ27Mとなう、塗膜を形成しなかっ
た鋼板単独の場合の絞り深さ23mに較べて大きく改善
されていることが判った。The diameter of the test piece is 100B (cut out into a disk), the die hole diameter is 53.64M, the die shoulder radius is 13.0m,
The punch diameter is 501F/IL button and the punch bottom round radius is 511WL, and the measurement result is a drawing depth of 27M, which is a great improvement compared to the drawing depth of 23m in the case of the steel plate alone without coating. It turned out that there was.
なお前記の塗料に釦いてn−オクタデカンを添加しない
ものに付き、同様の測定を行なったところ絞り深さ22
mとなり、n−オクタデカンを混入させない塗料では鋼
板単独の場合よりも加工性が悪くなった。In addition, when similar measurements were performed on the above-mentioned paint without the addition of n-octadecane, the aperture depth was 22.
m, and the workability of the paint not containing n-octadecane was worse than that of the steel plate alone.
次にこのようにして絞り加工を行なった試験片に付き、
ガソリンに浸漬して塗膜の洗浄性を調べたところ、短時
間に洗浄除去できた。Next, on the test piece that was drawn in this way,
When we tested the cleanability of the paint film by immersing it in gasoline, we found that it could be washed off in a short time.
実施例 2
アクリル酸ブチル60部、メタクリル酸メチル10部釦
よびアクリル酸30部からなる共重合体のメタノール溶
液に、樹脂分100部に対して30部となる割合で牛脂
(融点30〜38℃)を添加して均一に分散混合し、固
形分含量が23重量多粘度が11ポイズのこの発明の金
属板保護用塗料を得た。Example 2 Beef tallow (melting point 30-38°C ) was added and uniformly dispersed and mixed to obtain a paint for protecting metal plates of the present invention having a solid content of 23 and a weight multiviscosity of 11 poise.
この塗料を用いて実施例1に記載の鋼板に乾燥厚みがi
oμとなるように塗布乾燥して潤滑性を有する保護塗膜
を形成した。Using this paint, the steel plate described in Example 1 was coated with a dry thickness of i.
A protective coating film having lubricating properties was formed by coating and drying so as to give oμ.
この塗膜は実施例1の場合と同様に鋼板表面に対し密着
性が良好で塗膜強度も鉛筆硬度が2Hという満足できる
ものであり、加工前の保管中もしくは加工中の腐蝕や傷
の発生を充分に防止できるものであった。As in the case of Example 1, this coating film had good adhesion to the steel plate surface, and the coating strength was satisfactory with a pencil hardness of 2H, and corrosion and scratches did not occur during storage or processing before processing. It was possible to sufficiently prevent this.
次にこの塗膜による加工性の良否を調べるためにスウイ
フト式深絞り試験により限界絞り比(試験片に割れが生
じるときのダイス径に対する試験片の直径)を測定した
ところ、2.34の値となり塗膜を形成しなかった鋼板
単独の場合の限界絞り比2.26に較べて加工性が大き
く改善されていることが判った。Next, in order to examine the workability of this coating film, the critical drawing ratio (diameter of the test piece relative to the die diameter at which cracks occur in the test piece) was measured using a Swift deep drawing test, and the value was 2.34. It was found that the workability was greatly improved compared to the limit drawing ratio of 2.26 in the case of a steel sheet alone without a coating film formed thereon.
渣たこの加工試験後2Nの苛性ソーダ水溶液中に浸漬し
て塗膜の洗浄性を調べたところ、60℃で1分以内に洗
浄除去できた。After the octopus processing test, the washability of the coating film was examined by immersing it in a 2N aqueous solution of caustic soda, and it was found that it could be washed away within 1 minute at 60°C.
実施例 3
ブチラール樹脂(漬水化学社製BM−3)50部と、ア
クリル酸ブチル−メタクリル酸メチルメタクリル酸共重
合体50部とをメタノールに溶解してなる樹脂溶液に、
樹脂分100部に対して20部の割合でカカオ脂(融点
22〜27℃)を添加して均一に分散混合し、固形分含
量が21重量量多粘度が9ポイズのこの発明の金属板保
護用塗料を得た。Example 3 In a resin solution prepared by dissolving 50 parts of butyral resin (BM-3 manufactured by Tsukisui Kagaku Co., Ltd.) and 50 parts of butyl acrylate-methyl methacrylate copolymer in methanol,
Cocoa butter (melting point 22 to 27°C) is added at a ratio of 20 parts to 100 parts of resin content and uniformly dispersed and mixed to provide a metal plate protection of the present invention with a solid content of 21% by weight and a multiviscosity of 9 poise. I obtained the paint for use.
この塗料を用いてブライトアニーリング仕上げしたステ
ンレス板(SUS430,0.5M厚)に乾燥厚みが1
0μとなるように塗布乾燥して潤滑性を有する保護塗膜
を形成した。A stainless steel plate (SUS430, 0.5M thick) bright annealed using this paint has a dry thickness of 1.
A protective coating film having lubricating properties was formed by coating and drying to a coating thickness of 0μ.
この塗膜はステンレス板に対し密着性が良好で塗膜強度
も鉛筆硬度が2Hという満足できるものであり、加工前
の保管中もしくは加工中の腐蝕や傷の発生を充分に防止
できるものであった。This coating film has good adhesion to the stainless steel plate and has satisfactory coating strength with a pencil hardness of 2H, and can sufficiently prevent corrosion and scratches during storage before processing or during processing. Ta.
次にこの塗膜による加工性の良否を実施例2と同様にし
て調べたところ、限界絞り比が2.36となり、塗膜を
設けないステンレス板単独の場合の限界絞り比2.06
に較べて加工性が大きく改善されていることが判った。Next, the quality of workability due to this coating film was investigated in the same manner as in Example 2, and the limiting drawing ratio was 2.36, which was 2.06 for the stainless steel plate alone without the coating film.
It was found that the workability was greatly improved compared to the previous one.
またこの加工試験後、市販の洗浄液(ファインクリーナ
3152日本パーカライジング社製)に浸漬してその洗
浄性を調べたところ、70℃で1分間浸漬するだけで簡
単に塗膜を洗浄除去できた。Further, after this processing test, the cleaning properties were examined by immersing it in a commercially available cleaning solution (Fine Cleaner 3152 manufactured by Nippon Parkerizing Co., Ltd.), and it was found that the paint film could be easily cleaned and removed by just immersing it at 70° C. for 1 minute.
実施例 4
アクリル酸ブチル−メタクリル酸メチル−アクリル酸共
重合体のメタノール溶液に、樹脂分100部に10部と
なる割合でテトラデシルアルコール(融点38℃)を添
加してホモミキサーで均一に分散混合し、固形分含量が
22重量饅、粘度が10ポイズのこの発明の金属板保護
用塗料を得た。Example 4 Tetradecyl alcohol (melting point 38°C) was added to a methanol solution of butyl acrylate-methyl methacrylate-acrylic acid copolymer at a ratio of 10 parts to 100 parts of resin and uniformly dispersed with a homomixer. By mixing, a coating material for protecting a metal plate of the present invention having a solid content of 22% by weight and a viscosity of 10 poise was obtained.
この塗料を用いて0.5−のアルミニウム板に乾燥厚み
が10μとなるように塗布乾燥して潤滑性を有する保護
塗膜を形成した。This coating material was applied to a 0.5-mm aluminum plate to a dry thickness of 10 microns and dried to form a protective coating film having lubricating properties.
この塗膜はアルミニウム板表面に対し密着性が良好で塗
膜強度も鉛筆硬度が2Hという満足できるものであり、
加工前の保管中もしくは加工中の腐蝕や傷の発生を充分
に防止できるものであった。This coating film has good adhesion to the aluminum plate surface, and the coating strength is satisfactory with a pencil hardness of 2H.
It was possible to sufficiently prevent corrosion and scratches from occurring during storage before processing or during processing.
次にこの塗膜による加工性の良否を調べるために、1ず
エリクセン試験により上部が割れる1での絞り深さを測
定したところ、試験片の巾が70關でポンチ先端径が2
08のとき絞り深さが5.1閣となり、アルミニウム板
単独の場合の絞り深さ4.5Mに較べて加工性の改善効
果が明らかに認められた。Next, in order to examine the workability of this coating film, we first measured the drawing depth at point 1 where the upper part cracked using the Erichsen test.
At No. 08, the drawing depth was 5.1 mm, and the effect of improving workability was clearly recognized compared to the drawing depth of 4.5 M in the case of aluminum plate alone.
次にスウイフト式深絞り試験により底部が割れる1での
ポンチ力を測定したところ、試験片の直径が10Crr
Lでしわ重えの荷重が50に2のとき、ポンチ力が91
3KPとなり、アルミニウム板単独の場合のポンチ力5
45KPに較べて加工性が明らかに改善されていること
が判った。Next, we measured the punching force at point 1 where the bottom part cracked using the Swift deep drawing test, and found that the diameter of the test piece was 10Crr.
When the wrinkle weight load is 50 to 2 at L, the punch force is 91
3KP, and the punching force for aluminum plate alone is 5
It was found that the workability was clearly improved compared to 45KP.
このような加工試験後、ファインクリーナ342に浸漬
してその洗浄性を調べたところ、75℃で1分以内で簡
単に洗浄除去できた。After such a processing test, the cleaning performance was examined by immersing it in Fine Cleaner 342, and it was found that it could be easily cleaned and removed within 1 minute at 75°C.
比較例
テトラデシルアルコールの代りに、常温(20℃)で液
状の潤滑剤としてマシン油を3部使用した以外は実施例
4と全く同様にして金属板保護用塗料を得た。Comparative Example A paint for protecting a metal plate was obtained in exactly the same manner as in Example 4, except that 3 parts of machine oil, which is liquid at room temperature (20° C.), was used instead of tetradecyl alcohol.
この塗料を使用して実施例4と同様にしてアルミニウム
板表面に塗膜を形成し、描画試験(円径lQa、荷重5
00g)で密着性を評価したところ、8〜10/10の
結果となり、実施例4のものに付き測定した値がO/1
0であったのに較べて非常に密着性に劣っていた。Using this paint, a coating film was formed on the surface of an aluminum plate in the same manner as in Example 4, and a drawing test (circle diameter lQa, load 5
00g), the results were 8 to 10/10, and the value measured for Example 4 was O/1.
The adhesion was very poor compared to that of 0.
このため保管中ないし加工中の金属板の傷の発生も充分
に防止できないものであった。For this reason, it has not been possible to sufficiently prevent the occurrence of scratches on the metal plate during storage or processing.
Claims (1)
後に洗浄液により容易に除去されうる塗料であって、こ
の塗料中に塗料樹脂分に対し離溶ないし非相溶性でかつ
加工時の摩擦熱により溶融しうるような融点を有する潤
滑剤を、塗料樹脂分との合計量に対し50重重量上り少
ない割合で含むことを特徴とする金属板保護用塗料。1. A paint that is applied to the surface of a metal plate before cold plastic working and that can be easily removed with a cleaning solution after the above-mentioned processing, and that is insoluble or incompatible with the resin component of the paint and that A paint for protecting a metal plate, characterized in that it contains a lubricant having a melting point that can be melted by frictional heat in a proportion of 50% less by weight than the total amount of the paint and resin.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54023781A JPS5833904B2 (en) | 1979-02-28 | 1979-02-28 | Paint for protecting metal plates |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54023781A JPS5833904B2 (en) | 1979-02-28 | 1979-02-28 | Paint for protecting metal plates |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55115475A JPS55115475A (en) | 1980-09-05 |
JPS5833904B2 true JPS5833904B2 (en) | 1983-07-22 |
Family
ID=12119861
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54023781A Expired JPS5833904B2 (en) | 1979-02-28 | 1979-02-28 | Paint for protecting metal plates |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5833904B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60203677A (en) * | 1984-03-29 | 1985-10-15 | Nippon Paint Co Ltd | Coating compound composition for precoating of metallic material |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS495212A (en) * | 1972-04-28 | 1974-01-17 |
-
1979
- 1979-02-28 JP JP54023781A patent/JPS5833904B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS495212A (en) * | 1972-04-28 | 1974-01-17 |
Also Published As
Publication number | Publication date |
---|---|
JPS55115475A (en) | 1980-09-05 |
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