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JPH0465154B2 - - Google Patents
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JPH0465154B2 - - Google Patents

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Publication number
JPH0465154B2
JPH0465154B2 JP1126275A JP12627589A JPH0465154B2 JP H0465154 B2 JPH0465154 B2 JP H0465154B2 JP 1126275 A JP1126275 A JP 1126275A JP 12627589 A JP12627589 A JP 12627589A JP H0465154 B2 JPH0465154 B2 JP H0465154B2
Authority
JP
Japan
Prior art keywords
oil
galvanized steel
steel sheets
rust
press
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
Application number
JP1126275A
Other languages
Japanese (ja)
Other versions
JPH02305979A (en
Inventor
Motohiro Nakayama
Yukio Numakura
Tamio Akata
Michihiro Yamamoto
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP12627589A priority Critical patent/JPH02305979A/en
Publication of JPH02305979A publication Critical patent/JPH02305979A/en
Publication of JPH0465154B2 publication Critical patent/JPH0465154B2/ja
Granted legal-status Critical Current

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  • Lubricants (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Description

【発明の詳細な説明】[Detailed description of the invention]

(産業上の利用分野) 本発明は自動車産業を中心に、防錆・防食の観
点から急速に需要が高まつている、亜鉛メツキ鋼
板の保存期間中の防錆処理と鋼板を加工する際の
プレス加工処理を単一の潤滑油で処理することを
可能とする亜鉛メツキ鋼板用プレス加工兼用防錆
油に関する。 この場合、亜鉛メツキ鋼板とは溶融亜鉛メツキ
鋼板、電気亜鉛メツキ鋼板、蒸着亜鉛メツキ鋼
板、及びこれらを合金化した合金化亜鉛メツキ鋼
板等、亜鉛を主たる成分とするメツキ鋼板の全て
を指すものである。 (従来の技術) 亜鉛メツキ鋼板が製鉄メーカーで製造されてか
ら、需要家で種々の部品に成型、加工させるまで
の仕掛り期間中で品質上最も重要な問題は発錆の
防止である。 このため通常の亜鉛メツキ鋼板製造工程におい
ては、その最終通板ライン(各亜鉛メツキライン
又はリコイリングが多い)出側でコイルに巻き取
る直前又はシートに裁断する直前にコーテイング
ロール法、油滴下法、静電塗布法などのいずれか
の方法で防錆油が適量塗布されている。 一般に各種鋼板類、特にZnメツキ鋼板を対象
に用いる防錆油は油じみが少ない、表面のZnメ
ツキ層を腐食しない、脱脂性、化成処理性が良い
等の品質の面と、油の持出しを少なくするという
経済性の両面から、40℃の粘度が20cSt以下、好
ましくは5〜10cStのものが用いられている。 防錆油を塗布された鋼板は、気化性防錆紙やポ
リエチレンフイルムを積層した防錆紙あるいはポ
リエチレンフイルムなどで厳重に梱包された後納
期に合わせて出荷される。 出荷されたコイルあるいはシートはユーザーで
開梱され、種々の製品形状にプレス加工される。 ユーザーにおけるプレス加工は張り出し、引張
り、絞り加工などの成型に大小の面圧が加わる摺
動が複雑に組み合わされており、しかもできるだ
け高速で加工できるこが要求されるが、上述のよ
うに粘度が低いため油膜強度も弱く、張り出し、
引張り、絞り加工などを行うには潤滑性が不十分
である。 亜鉛メツキ鋼板のプレス加工において潤滑性が
不十分であると、例えば電気亜鉛メツキ鋼板や溶
融亜鉛メツキ鋼板のようにメツキ層が軟質な亜鉛
のη相である場合、η相が金型と凝着して所謂カ
ジリ現象をおこし、メツキ相が剥離したり、甚だ
しい場合は板破断に至ることがしばしばある。 又例えば、溶融亜鉛メツキ後、熱拡散処理をし
て製造する合金化溶融亜鉛メツキ鋼板の場合、メ
ツキ層は鉄・亜鉛の合金層となるが、メツキ表面
に比較的軟質なξ相(FeZn13)が残存すると、
溶融亜鉛メツキ鋼板と同様の現象が生ずる場合が
ある。 破断はもとより歩留り低下につながり、メツキ
層の剥離も、その剥離片が製品に押し傷がつく原
因となるので歩留り低下、或いは型洗浄頻度増等
による能率低下の実害がでる。 このため成型金型、工具と亜鉛メツキ鋼板の界
面を適度な潤滑状態に保つことが技術上の重要な
ポイントとなる。 そこで潤滑技術については従来いろいろの工夫
がなされてきたが、最も一般的なものは油脂類と
鉱物油との混合物であるプレス加工油を直前塗布
する方法である。 プレス加工油は加工度により使用するものが異
なるため、種々の粘度グレード(50〜150cSt、40
℃)があり、本発明の対象となる亜鉛メツキ鋼板
のプレス加工には70〜80cSt(40℃)の高粘度のも
のが使用されている。 その最も原始的な手法は手塗潤滑でるが、この
場合生産性が低く、更に塗布するプレス加工油の
種類、量、位置のコントロールが困難で成型性に
バラツキを生じたり、後工程の脱脂が不十分とな
る欠点がある。 そこで近年ではプレス作業の機械化による合理
化に床泣い、潤滑個所へのプレス加工油のスプレ
ー潤滑に変つてきており、生産性、塗油量のコン
トロールには改善が見られるものの、設備投資が
必要で、しかも油のミストによる環境悪化などの
問題をかかえている。 一方視点をかえて高粘度のプレス加工油を防錆
油として使用することが考えられるが、高粘度で
あるが故、塗布方法を考慮しても油膜を薄くでき
る限界があり、持ち出しによる損失が大きいため
不経済である。 又この問題は現在用いられているプレス加工油
の粘度を防錆油並に下げることが可能であれば解
決できるが、この場合加工に支障をきたさないよ
うにするには潤滑性を上げるために極圧添加剤の
添加が不可欠となる。 極圧添加剤は空気中の水分と接触することによ
り、加水分解、脱酸塩などが起こり、腐食性物質
が生成するため防錆性能が著し低下する。この現
象は防錆添加剤によつて抑制することは難しく、
特に亜鉛メツキ鋼板での実用性は乏しい。 つまり現在の添加剤類の組み合わせ技術では市
販の防錆油又はプレス化合油のどちらか一方でも
つて防錆性及びプレス加工性を満足させることは
不可能であつた。 そこで本発明者らは、特開昭62−95396に開示
されているところであるプレス加工兼用防錆を提
案した。その内容は(a)スルホン酸塩の群から選ば
れた少なくとも1種、(b)カルボン酸塩の群から選
ばれた少なくとも1種、(c)リン酸エステル誘導
体、ジエステル、ポリオールエステル、油脂の群
から選ばれた少なくとも1種、及び(d)0.1μm以下
の粒子を主成分とするホウ酸のアルカリ/アルカ
リ土類金属塩を含有することを特徴とするプレス
加工兼用防錆油である。しかし上記発明は表面が
比較的不活性な冷延鋼板等には適用でいるが、表
面が活性な亜鉛メツキ鋼板の場合には防錆性能が
不十分であることが見出され、未だ改善の余地が
あつた。 これらの問題点を解決するためには、油じみが
少なく、鋼板表面の亜鉛メツキ層を腐食せず、脱
脂性、化成処理性に優れた低粘度の防錆油でもつ
て防錆処理を施し、且つその油膜でもつてプレス
加工を行う際の成型金型、工具と亜鉛メツキ鋼板
の界面を適度な潤滑状態に保つことが重要とな
る。 (発明が解決しようとする課題) 本発明の目的は粘度が20cSt以下で亜鉛メツキ
鋼板のプレス加工時に高潤滑性を有するプレス加
工兼用防錆油を提供することにある。 又、本発明の目的は亜鉛メツキ鋼板に対し優れ
た潤滑性、防錆性、脱脂性、化成処理性を有する
プレス加工兼用防錆油を提供することにある。 (課題を解決するための手段) 本発明は(a) スルホン酸塩の群から選ばれた少
なくとも1種、 (b) カルボン酸塩の群から選ばれた少なくとも1
種、 (c) ジエステル、ポリオールエステル、油脂の群
から選ばれた少なくとも1種、 (d) 超塩基性スルホネートの群から選ばれた少な
くとも1種及び、 (e) ホウ酸カリウムを主成分とする1μm以下の
粒子 を含有することを特徴とする亜鉛メツキ鋼板プレ
ス加工兼用防錆油に係る。 以下、各添加剤の作用について詳細に説明す
る。 まずスルホン酸塩、カルボン酸塩、及び超塩基
性スルホネートは防錆を目的とした添加剤であ
る。 スルホン酸塩としてはアルキルベンゼンスルホ
ン酸塩、アルキルナフタレンスルホン酸塩、石油
スルホン酸塩等を、又カルボン酸塩としては例え
ばステアリン酸、ナフテン酸、酸化ワツクス、ラ
ノリン脂肪酸等の長鎖の脂肪酸塩等を挙げること
ができる。 スルホン酸塩の使用機構はそれの持つ金属表面
への強い吸着力にる水透過を防ぐ防御膜を形成
し、又油中で極性基を内側に、炭化水素基を外側
に配向した分子集合体、ミセルを形成し水を可溶
化することにより亜鉛メツキ表面への水の接触を
防ぐものである。 カルボン酸塩は金属表面への強い吸着性、密着
性、被膜形成性による水透過を防く防御膜を形成
し、防錆効果を発揮する。 更に、スルホン酸塩と併用することによる相乗
効果によつて優れた防錆性が得られ、又カルボン
酸塩自体の各種溶媒に対する溶解性も改善でき
る。超塩基性スルホネートはその中に含まれる分
散体中の炭酸カルシウムの結晶が偏平な板状であ
り、造膜した時に重なりあつて配向しバリアーを
形成することにより腐食成分の侵入を防ぐもので
ある。 更にこれらはアルカリ性のためにホウ酸カリウ
ムの加水分解によつて生ずるホウ酸の中和作用を
有し、特に亜鉛メツキ鋼板には不可欠である。 超塩基性スルホネートとしては、超塩基性カル
シウムスルホネート、超塩基性バリウムスルホネ
ート、超塩基性マグネシウムスルホネート等を挙
げることができ、中でも粒径が60オングストロー
ム以下の、70〜90%の炭酸カルシウムと10〜30%
の水酸化カルシウムをコロイド状に分散した、超
塩基性カルシウムスルホネートが好ましい。 上記3種の添加剤の濃度については特に限定す
るものではないが、実用上10%以下で十分であ
り、経済的観点からすると3〜5%が好ましい。 又ジエステルとしては例えばジオクチルセバケ
ート、ジオクチルアジペート等を、ポリオールエ
ステルとしてはトリメチロールプロパン、ペンタ
エリスリトール、トリグリセライド等の炭素数10
〜18の脂肪酸とのエステル等を、油脂としてはパ
ーム油、ナタネ油、ヒマシ油等の植物油脂や、ラ
ード、ラノリン、牛脂等の動物油脂を挙げること
ができる。 これらは油性向上を目的とするもので、プレス
加工時の適度の滑り作用と良好な表面状態を与え
る。 本添加剤の濃度も特に限定するものではない
が、効果としては20%以下で十分であり、経済的
観点から10〜15%が好ましい。 本発明のホウ素化合物は油中において一般に清
浄分散剤と称されるアルカリ又はアルカリ土類金
属スルホン酸塩及びスクシンイミド等の化合物の
存在下でホウ酸と水酸化カリウムを反応させた、
粒状ホウ酸カルウム分散体で、その粒径は1μm
以下、好ましくは平均粒径が0.1μmのものが良
い。 ホウ酸カリウムの濃度も特に限定するものでな
く、効果としては2%以下で十分であり経済的観
点から0.3〜1%が好ましい。即ち潤滑性の観点
からは濃度が高い方が望ましいが、潤滑性の向上
効果は小さくなり、経済的に不利となる。更に油
中での分散安定性も悪化する傾向にあることから
上記範囲が望ましい。 このようなホウ酸カリウム分散体としては、例
えば商品名「OLOA 9750」(Chevron Chemical
Cmpany Oroite Additives Division製)が使用
できる。 本発明のホウ酸系固体潤滑剤の場合は極圧被膜
は化学反応によるものではなく物理的吸着による
もので、この吸着膜は特に高荷重領域で優れた潤
滑性を示す。 粒子系を1ミクロン以下に限定した理由は防錆
油に固定潤滑剤を添加する場合、粒系の大きさが
1ミクロンを越えると二次凝集によつて、油中で
の分散安定性が悪くなるからである。粒子系が1
ミクロンを越えると貯蔵中に潤滑剤成分が分離、
沈降し潤滑不足の原因になるとか、金属表面に塗
油した時に、固体潤滑剤が錆発生の核となり、著
しく防錆性を落とすことにつながる場合がある。
粒子系が1ミクロン以下のホウ酸カリウムはアル
キルベンゼンスルホン酸バリウム塩、超塩基性カ
ルシウムスルホネートとラノリン脂肪酸バリウム
塩の相乗効果により油中に透明に分散でき、前述
の不安がないことは大きな特長である。 又前述した如く、ホウ酸カリウムは親水性が強
く、水との接触により一部溶解し、ホウ酸を生成
することがある。生成したホウ酸成分は金属に対
し腐食性をもつことから、防錆油に使用する場合
はこの対策を施しておく必要がある。 本発明のプレス加工兼用防錆油は使用環境での
吸湿や、工程での水の混入が考えられるため、前
述した超塩基性カルシウムスルホネートを配合
し、生成したホウ酸を中和できるようにしてある
ことも特長である。 本発明において(a)〜(e)成分の配合割合は(a)成分
は10重量%以下、好ましくは3〜5重量%、(b)成
分は10重量%以下、好ましくは3〜5重量%、(c)
成分は20重量%以下、好ましくは10〜15重量%、
(d)成分は10重量%以下、好ましくは3〜5重量
%、(e)成分は2重量%以下、好ましくは0.3〜1
重量%とするのが良く、これに適当な粘度に調整
することのできる鉱油を配合する。 本発明の亜鉛メツキ鋼板用プレス加工兼用防錆
油は、常法に従つて容易に製造することができ
る。即ち、所定量の基油に所定量の防錆添加剤、
潤滑剤、固定潤滑剤を加え、撹拌・混合する。混
合は、常用の撹拌機付き混合槽を用いることがで
き、通常60〜100℃で行われ、時間は1〜2時間
で十分である。 このようにして前記組成の成分の配合によつ
て、後記実施例で実証されるように、亜鉛メツキ
鋼板に対して優れた防錆性と、プレス性を有する
プレス加工兼用防錆油が得られる。 (実施例) 以下に実施例及び比較例により詳細に説明す
る。No.1〜3は実施例であり、No.4〜6は比較例
である。結果を第1表に示す。 防錆性、潤滑性、脱脂性、化成処理性の試験方
法と評価基準は次の通りである。 防錆性:供試亜鉛メツキ鋼板 (a) 溶融亜鉛メツキ鋼板(メツキ付着量90g/
m2) (b) 合金化溶融亜鉛メツキ鋼板(メツキ付着量60
g/m2) 評価方法 上記亜鉛メツキ鋼板を本発明品及び比較油中に
浸漬し、49℃、95%RHの恒温恒湿槽に60日間静
置し、メツキ層の腐食の状態を目視で評価した。 ○:腐食がない。 △:腐食による変色が認められる。 ×:腐食による変色が著しい。 潤滑性:供試亜鉛メツキ鋼板 合金化溶融亜鉛メツキ鋼板(メツキ付着量60
g/m2) 評価方法 本発明製品及び比較油を同一コイルから採取し
た合金化溶融亜鉛メツキ鋼板に約1g/m2塗布
し、ビード金型で通過する際に引き抜き荷重(Kg
f)で評価した。 引き抜き荷重が小さいほど潤滑性が良好である
ことを示す。ビード金型には220Kgfの押し付け
荷重を加えた。 サンプル形状:17W×400L×0.8t 引き抜き速度:500mm/min. ストローク:300mm 脱脂性:供試亜鉛メツキ鋼板 合金化溶融亜鉛メツキ鋼板(メツキ付着量60
g/m2) 評価方法 炭酸ソーダ系脱脂液を用いて、スプレー方式で
20秒間脱脂し、水洗後の水漏れ面積率(%)で評
価した。水漏れ面積率が高いほど脱脂性が良好で
あることを示す。 化成処理性:供試亜鉛メツキ鋼板 合金化溶融亜鉛メツキ鋼板(メツキ付着量60
g/m2) 評価方法 リン酸亜鉛系化成処理液を用いて浸漬方式で化
成処理を行い、付着量、結晶形態で評価した。 ○:緻密な結晶 ×:粗大な結晶 尚、脱脂性、化成性については、合金化亜鉛メ
ツキ鋼板に約1g/m2塗油を行い、評価に先立つ
て、恒温恒湿槽(55℃、60%RH)で7日間経時
させた。 第1表に見られるように、本発明品は防錆性、
潤滑性に優れ、脱脂性、化成処理性にも問題無
く、亜鉛メツキ鋼板用プレス加工兼用防錆油とし
て優れた性能を有することがわかる。
(Industrial Application Field) The present invention is applicable to rust prevention treatment during the storage period of galvanized steel sheets and processing of steel sheets, which are rapidly increasing in demand from the viewpoint of rust prevention and corrosion prevention, mainly in the automobile industry. The present invention relates to a rust preventive oil for press processing for galvanized steel sheets, which enables press processing to be performed with a single lubricating oil. In this case, galvanized steel sheets refer to all galvanized steel sheets whose main component is zinc, such as hot-dip galvanized steel sheets, electrolytic galvanized steel sheets, vapor-deposited galvanized steel sheets, and alloyed galvanized steel sheets made by alloying these. be. (Prior Art) The most important problem in terms of quality is prevention of rust during the in-process period from when a galvanized steel sheet is produced by a steel manufacturer until it is molded and processed into various parts by a consumer. For this reason, in the normal galvanized steel sheet manufacturing process, coating roll method, oil dripping method, static An appropriate amount of anti-corrosion oil is applied using one of the methods such as electrocoating. Generally, anti-corrosion oil used for various steel plates, especially Zn-plated steel plates, has quality aspects such as less oil staining, does not corrode the Zn-plated layer on the surface, has good degreasing properties and chemical conversion treatment properties, and has good oil removal properties. From the economic point of view of reducing the amount of viscosity, those having a viscosity at 40° C. of 20 cSt or less, preferably 5 to 10 cSt, are used. The steel plates coated with anti-corrosion oil are carefully packaged with anti-rust paper or polyethylene film laminated with volatile anti-rust paper or polyethylene film, and then shipped in time for delivery. The shipped coils or sheets are unpacked by the user and pressed into various product shapes. Press processing for users involves a complex combination of sliding motions that apply large and small surface pressures during forming, such as stretching, tensioning, and drawing, and it is required that the processing be performed at the highest possible speed, but as mentioned above, viscosity Because it is low, the oil film strength is also weak, overhanging,
Lubricity is insufficient for stretching, drawing, etc. If the lubricity is insufficient during press working of galvanized steel sheets, for example, when the plating layer is soft zinc η phase as in electrogalvanized steel sheets or hot-dip galvanized steel sheets, the η phase may adhere to the mold. This often causes a so-called galling phenomenon, causing the plating phase to peel off or, in extreme cases, to breakage of the plate. For example, in the case of an alloyed hot-dip galvanized steel sheet manufactured by hot-dip galvanizing followed by thermal diffusion treatment, the plating layer is an alloy layer of iron and zinc, but the plating surface contains a relatively soft ξ phase (FeZn 13 ) remains, then
A phenomenon similar to that of hot-dip galvanized steel sheets may occur. Not only breakage, but also a decrease in yield, and peeling of the plating layer causes the peeled pieces to cause press scratches on the product, resulting in a decrease in yield and a decrease in efficiency due to increased frequency of mold cleaning. Therefore, it is an important technical point to keep the interface between the forming die, tool, and galvanized steel sheet in a moderately lubricated state. Therefore, various ideas have been made regarding lubrication technology, but the most common method is to immediately apply pressing oil, which is a mixture of fats and oils and mineral oil. Since the press processing oil used differs depending on the degree of processing, various viscosity grades (50 to 150 cSt, 40
℃), and one with a high viscosity of 70 to 80 cSt (40℃) is used for press working of the galvanized steel sheet that is the object of the present invention. The most primitive method is hand-applied lubrication, but in this case productivity is low and it is difficult to control the type, amount, and position of the press processing oil applied, resulting in variations in moldability and the need for degreasing in the post-process. There are drawbacks that make it inadequate. Therefore, in recent years, efforts have been made to streamline press operations through mechanization, and the lubrication has been replaced by spray lubrication of press processing oil to the lubrication points. Although improvements have been seen in productivity and control of the amount of oil applied, capital investment is required. Moreover, there are problems such as environmental deterioration due to oil mist. On the other hand, it is conceivable to change the perspective and use high-viscosity press working oil as a rust preventive oil, but because of its high viscosity, there is a limit to how thin the oil film can be, even when considering the application method, and there is a risk of loss due to removal. It is uneconomical because it is large. This problem can be solved if it is possible to reduce the viscosity of the currently used press working oil to the same level as rust preventive oil, but in this case, in order to prevent machining from occurring, it is necessary to increase the lubricity. Addition of extreme pressure additives is essential. When extreme pressure additives come into contact with moisture in the air, they undergo hydrolysis, dechlorination, etc., and corrosive substances are produced, resulting in a significant decrease in rust prevention performance. This phenomenon is difficult to suppress with anti-rust additives.
It is particularly impractical for galvanized steel sheets. In other words, with the current combination technology of additives, it has been impossible to satisfy rust prevention properties and press workability using either commercially available rust preventive oils or press compound oils. Therefore, the present inventors proposed a rust prevention method that can also be used for press processing, which is disclosed in JP-A No. 62-95396. The contents include (a) at least one selected from the group of sulfonates, (b) at least one selected from the group of carboxylates, and (c) phosphoric acid ester derivatives, diesters, polyol esters, oils and fats. This is a rust-preventing oil for press working, characterized in that it contains at least one selected from the group consisting of: However, although the above invention can be applied to cold-rolled steel sheets with relatively inert surfaces, it has been found that the rust prevention performance is insufficient in the case of galvanized steel sheets with active surfaces, and improvements are still needed. There was room. In order to solve these problems, anti-corrosion treatment should be carried out using a low-viscosity anti-rust oil that produces less oil stains, does not corrode the galvanized layer on the surface of the steel sheet, and has excellent degreasing and chemical conversion properties. In addition, it is important to keep the interface between the forming die, tool, and galvanized steel sheet in an appropriate lubricated state during press working due to the oil film. (Problems to be Solved by the Invention) An object of the present invention is to provide a rust preventive oil that can be used for press working and has a viscosity of 20 cSt or less and has high lubricity during press working of galvanized steel sheets. Another object of the present invention is to provide a rust-inhibiting oil for press working that has excellent lubricity, rust prevention, degreasing, and chemical conversion treatment properties for galvanized steel sheets. (Means for Solving the Problems) The present invention provides (a) at least one member selected from the group of sulfonates, (b) at least one member selected from the group of carboxylates.
(c) at least one selected from the group of diesters, polyol esters, and fats and oils; (d) at least one selected from the group of ultrabasic sulfonates; and (e) containing potassium borate as a main component. This invention relates to a rust preventive oil for press processing of galvanized steel sheets, which is characterized by containing particles of 1 μm or less. The effects of each additive will be explained in detail below. First, sulfonates, carboxylates, and superbasic sulfonates are additives intended for rust prevention. Examples of sulfonates include alkylbenzenesulfonates, alkylnaphthalenesulfonates, petroleum sulfonates, etc., and examples of carboxylates include long chain fatty acid salts such as stearic acid, naphthenic acid, oxidized wax, and lanolin fatty acids. can be mentioned. The mechanism of use of sulfonate is that it forms a protective film that prevents water permeation due to its strong adsorption power on metal surfaces, and also forms a molecular assembly in oil with polar groups oriented on the inside and hydrocarbon groups on the outside. , which prevents water from coming into contact with the galvanized surface by forming micelles and solubilizing water. Carboxylate salts form a protective film that prevents water permeation due to their strong adsorption, adhesion, and film-forming properties on metal surfaces, and exhibit rust prevention effects. Furthermore, due to the synergistic effect when used in combination with a sulfonate, excellent rust prevention properties can be obtained, and the solubility of the carboxylate itself in various solvents can also be improved. Ultrabasic sulfonates contain calcium carbonate crystals in a dispersion that is flat and plate-like, and when formed into a film, they overlap and align to form a barrier that prevents the intrusion of corrosive components. . Furthermore, because of their alkalinity, they have the effect of neutralizing boric acid produced by hydrolysis of potassium borate, and are especially essential for galvanized steel sheets. Examples of the superbasic sulfonate include superbasic calcium sulfonate, superbasic barium sulfonate, superbasic magnesium sulfonate, etc. Among them, 70 to 90% calcium carbonate and 10 to 10% of calcium carbonate with a particle size of 60 angstroms or less 30%
An ultrabasic calcium sulfonate containing a colloidal dispersion of calcium hydroxide is preferred. The concentration of the three additives mentioned above is not particularly limited, but 10% or less is practically sufficient, and from an economical point of view, 3 to 5% is preferable. Diesters include dioctyl sebacate, dioctyl adipate, etc., and polyol esters include trimethylolpropane, pentaerythritol, triglyceride, etc. with 10 carbon atoms.
Examples of the oils and fats include vegetable oils such as palm oil, rapeseed oil, and castor oil, and animal fats and oils such as lard, lanolin, and beef tallow. These are intended to improve oiliness, and provide a suitable sliding effect and a good surface condition during press working. The concentration of this additive is also not particularly limited, but 20% or less is sufficient for the effect, and from an economical point of view, 10 to 15% is preferable. The boron compound of the present invention is obtained by reacting boric acid and potassium hydroxide in oil in the presence of compounds such as alkali or alkaline earth metal sulfonates and succinimide, which are generally referred to as detergent and dispersants.
Granular potassium borate dispersion, the particle size is 1μm
Hereinafter, preferably the average particle size is 0.1 μm. The concentration of potassium borate is also not particularly limited, and 2% or less is sufficient for the effect, and from an economical point of view, 0.3 to 1% is preferable. That is, from the viewpoint of lubricity, a higher concentration is preferable, but the effect of improving lubricity is reduced, which is economically disadvantageous. Furthermore, since the dispersion stability in oil tends to deteriorate, the above range is desirable. As such a potassium borate dispersion, for example, the product name "OLOA 9750" (Chevron Chemical
(Manufactured by the Company Oroite Additives Division) can be used. In the case of the boric acid solid lubricant of the present invention, the extreme pressure film is not formed by chemical reaction but by physical adsorption, and this adsorbed film exhibits excellent lubricity particularly in high load areas. The reason for limiting the particle size to 1 micron or less is that when a fixed lubricant is added to rust preventive oil, if the particle size exceeds 1 micron, the dispersion stability in the oil will be poor due to secondary agglomeration. Because it will be. Particle system is 1
If the size exceeds microns, lubricant components will separate during storage.
Solid lubricants may settle and cause insufficient lubrication, or when applied to metal surfaces, solid lubricants may become the core of rust formation, leading to a significant drop in rust prevention.
Potassium borate with a particle size of 1 micron or less can be transparently dispersed in oil due to the synergistic effect of alkylbenzene sulfonate barium salt, ultrabasic calcium sulfonate, and lanolin fatty acid barium salt, and its major feature is that it does not have the above-mentioned concerns. . Further, as described above, potassium borate is highly hydrophilic and may partially dissolve upon contact with water to produce boric acid. Since the boric acid component produced is corrosive to metals, precautions must be taken when using it as a rust preventive oil. The anti-corrosion oil for press processing of the present invention may absorb moisture in the environment in which it is used or may be contaminated with water during the process. Another feature is that In the present invention, the blending ratio of components (a) to (e) is: (a) component is 10% by weight or less, preferably 3-5% by weight, and component (b) is 10% by weight or less, preferably 3-5% by weight. ,(c)
The ingredients are 20% by weight or less, preferably 10-15% by weight,
Component (d) is 10% by weight or less, preferably 3 to 5% by weight, and component (e) is 2% by weight or less, preferably 0.3 to 1% by weight.
It is preferable to set it as % by weight, and add mineral oil that can adjust the viscosity to an appropriate level. The rust preventive oil for press working of galvanized steel sheets of the present invention can be easily produced according to a conventional method. That is, a predetermined amount of anti-rust additive is added to a predetermined amount of base oil.
Add lubricant and fixed lubricant and stir/mix. Mixing can be carried out using a conventional mixing tank equipped with a stirrer, usually at 60 to 100°C, and 1 to 2 hours is sufficient. In this way, by blending the components of the above composition, a rust preventive oil for press processing, which has excellent rust preventive properties and pressability for galvanized steel sheets, can be obtained, as will be demonstrated in the examples below. . (Example) A detailed explanation will be given below using Examples and Comparative Examples. Nos. 1 to 3 are examples, and Nos. 4 to 6 are comparative examples. The results are shown in Table 1. The test methods and evaluation criteria for rust prevention, lubricity, degreasing, and chemical conversion treatment are as follows. Rust prevention: Test galvanized steel sheet (a) Hot-dip galvanized steel sheet (plating coating amount 90g/
m 2 ) (b) Alloyed hot-dip galvanized steel sheet (Plating coverage: 60
g/ m2 ) Evaluation method The galvanized steel sheets mentioned above were immersed in oil of the present invention and comparison, and left to stand in a constant temperature and humidity chamber at 49°C and 95% RH for 60 days, and the state of corrosion of the plating layer was visually observed. evaluated. ○: No corrosion. △: Discoloration due to corrosion is observed. ×: Significant discoloration due to corrosion. Lubricity: Test galvanized steel sheet Alloyed hot-dip galvanized steel sheet (Plating coverage: 60
g/m 2 ) Evaluation method Approximately 1 g/m 2 of the inventive product and the comparative oil were applied to an alloyed hot-dip galvanized steel sheet taken from the same coil, and the pull-out load (Kg
f) was evaluated. The smaller the pull-out load, the better the lubricity. A pressing load of 220 kgf was applied to the bead mold. Sample shape: 17W x 400L x 0.8t Pulling speed: 500mm/min. Stroke: 300mm Degreasing property: Test galvanized steel sheet Alloyed hot-dip galvanized steel sheet (Plating coverage: 60
g/m 2 ) Evaluation method Spray method using soda carbonate degreasing liquid
After degreasing for 20 seconds and rinsing with water, the water leakage area ratio (%) was evaluated. The higher the water leakage area ratio, the better the degreasing performance. Chemical conversion treatment properties: Test galvanized steel sheet Alloyed hot-dip galvanized steel sheet (Plating coverage: 60
g/m 2 ) Evaluation method Chemical conversion treatment was performed using a immersion method using a zinc phosphate-based chemical conversion treatment solution, and evaluation was made based on the amount of adhesion and crystal morphology. ○: Dense crystals ×: Coarse crystals Regarding degreasing and chemical formation properties, approximately 1 g/ m2 of oil is applied to an alloyed galvanized steel sheet, and prior to evaluation, it is placed in a constant temperature and humidity chamber (55℃, 60℃). %RH) for 7 days. As shown in Table 1, the product of the present invention has rust prevention,
It can be seen that it has excellent lubricity, no problems in degreasing properties and chemical conversion treatment properties, and has excellent performance as a rust preventive oil for press processing for galvanized steel sheets.

【表】 (発明の効果) 1 プレス加工油及び加工油スプレー設備が不必
要となり、大幅な経費削減ができる。 2 プレス加工油塗布工程が省略できるため、ハ
ンドリングタイムの短縮が可能となり、生産性
向上につながる。 3 プレス加工油の飛散、洩れなどによる工場汚
染がなくなり、環境改善が可能となる。 4 亜鉛メツキ鋼板のプレス成形時の板破断、メ
ツキ剥離等を防止でき、歩留り向上、生産性向
上に寄与する。 5 成型性が向上することから、高価な高品質の
亜鉛メツキ鋼板や亜鉛系合金化メツキ鋼板を使
用する必要がなくなり、より安価な材料で容易
に成型できる。 以上の如く本発明のプレス加工兼用防錆油を用
いることによつてプレス工程に多大なメリツトを
提供し工業的に大きな効果をもたらすものであ
る。
[Table] (Effects of the invention) 1 Press processing oil and processing oil spray equipment are no longer necessary, resulting in a significant cost reduction. 2. Since the press processing oil application process can be omitted, handling time can be shortened, leading to improved productivity. 3. Factory pollution caused by splashing and leakage of press processing oil will be eliminated, making it possible to improve the environment. 4. It can prevent plate breakage, plating peeling, etc. during press forming of galvanized steel sheets, contributing to improved yield and productivity. 5. Since the formability is improved, there is no need to use expensive high-quality galvanized steel sheets or zinc-based alloyed steel sheets, and cheaper materials can be easily formed. As described above, the use of the rust preventive oil for press processing of the present invention provides great advantages in the press process and brings about great industrial effects.

Claims (1)

【特許請求の範囲】 1 (a) スルホン酸塩の群から選ばれた少なくと
も1種、 (b) カルボン酸塩の群から選ばれた少なくとも1
種、 (c) ジエステル、ポリオールエステル、油脂の群
から選ばれた少なくとも1種、 (d) 超塩基性スルホネートの群から選ばれた少な
くとも1種及び、 (e) ホウ酸カリウムを主成分とする1μm以下の
粒子 を含有することを特徴とする亜鉛メツキ鋼板用プ
レス加工兼用防錆油。
[Claims] 1. (a) At least one member selected from the group of sulfonates; (b) At least one member selected from the group of carboxylates.
(c) at least one selected from the group of diesters, polyol esters, and fats and oils; (d) at least one selected from the group of ultrabasic sulfonates; and (e) containing potassium borate as a main component. A rust preventive oil for press processing for galvanized steel sheets, characterized by containing particles of 1 μm or less.
JP12627589A 1989-05-18 1989-05-18 Rust preventive oil also used for press working Granted JPH02305979A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12627589A JPH02305979A (en) 1989-05-18 1989-05-18 Rust preventive oil also used for press working

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12627589A JPH02305979A (en) 1989-05-18 1989-05-18 Rust preventive oil also used for press working

Publications (2)

Publication Number Publication Date
JPH02305979A JPH02305979A (en) 1990-12-19
JPH0465154B2 true JPH0465154B2 (en) 1992-10-19

Family

ID=14931172

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12627589A Granted JPH02305979A (en) 1989-05-18 1989-05-18 Rust preventive oil also used for press working

Country Status (1)

Country Link
JP (1) JPH02305979A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4494726B2 (en) * 2003-04-23 2010-06-30 出光興産株式会社 Anti-rust and press working oil composition
JP4938276B2 (en) * 2005-09-21 2012-05-23 住友金属工業株式会社 Lubricating and rust preventive oil for steel plate
US8114822B2 (en) * 2006-10-24 2012-02-14 Chemtura Corporation Soluble oil containing overbased sulfonate additives
JP6163435B2 (en) * 2014-01-27 2017-07-12 出光興産株式会社 Lubricating oil composition

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6295396A (en) * 1985-10-21 1987-05-01 Nippon Steel Corp Pressing and anticorrosive oil

Also Published As

Publication number Publication date
JPH02305979A (en) 1990-12-19

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