JPH01174596A - Lubricating oil composition for can having excellent moldability - Google Patents

Lubricating oil composition for can having excellent moldability

Info

Publication number
JPH01174596A
JPH01174596A JP62334084A JP33408487A JPH01174596A JP H01174596 A JPH01174596 A JP H01174596A JP 62334084 A JP62334084 A JP 62334084A JP 33408487 A JP33408487 A JP 33408487A JP H01174596 A JPH01174596 A JP H01174596A
Authority
JP
Japan
Prior art keywords
oil
fatty acid
aluminum
lubricating oil
mineral oil
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
JP62334084A
Other languages
Japanese (ja)
Other versions
JPH0416515B2 (en
Inventor
Yoshio Okamoto
岡本 好雄
Takashi Inaba
隆 稲葉
Toru Takahashi
徹 高橋
Hideyoshi Usui
碓井 栄喜
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP62334084A priority Critical patent/JPH01174596A/en
Publication of JPH01174596A publication Critical patent/JPH01174596A/en
Publication of JPH0416515B2 publication Critical patent/JPH0416515B2/ja
Granted legal-status Critical Current

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  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Lubricants (AREA)

Abstract

PURPOSE:To obtain the composition lessening the amount of aluminum worn, effectively suppressing reaction with an oily component, having improved surface defect and black stripe properties, by adding a low-viscosity mineral oil to a lubricating oil comprising a fatty acid ester, etc. CONSTITUTION:(A) One or more lubrication oils selected from the group consisting of a fatty acid ester, fatty acid alcohol and fatty acid are blended with (B) 20-80wt.% (preferably 20-60wt.%) low-viscosity mineral oil (e.g., paraffinic hydrocarbon cold rolling oil for aluminum, having 2.0-4.0cst viscosity/40 deg.C) to give the aimed composition.

Description

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

(産業上の利用分野) 本発明はキャン用潤滑油組成物に係り、より詳細には、
飲料缶、食缶などのアルミニウム缶の缶胴材(キャン材
)を成形する際に予め素材表面に塗油される、いわゆる
リオイル組成物に関するものである。 (従来の技術) 一般に、カップ成形加工、しごき成形加工などの缶成形
加工(DI加工)時には、鉱物油又は合成油をエマルジ
ョン化した潤滑油を使用し、DI加工が行われているが
、ここ最近の缶形状の薄肉化並びに成形加工の高速化等
に伴い、DI成形加工は一層苛酷な潤滑状況となりつつ
ある。したがって、成形加工時における工具と素材間の
潤滑状況が悪くなり、焼付きが発生するなどして、成形
加工されたDI缶表面には脱脂洗浄後や印刷後において
も黒いすし状の欠陥(黒スジと称される)の残存が認め
られることが多く、成形性に問題があった。 このため、黒スジ性改善策として、近年、缶用素材表面
にリオイル(Re−Oil)をP relubrica
ntとして予め塗油する方法が採られるようになった。 リオイルは1缶成形加工に使用するエマルジョンタイプ
の潤滑油の原液と類似するものであるが、こうした油(
リオイル)を素材表面に静電塗油などにより予め塗油す
ることにより、たとえ成形用の潤滑油濃度が低くとも、
素材の潤滑性が改善され、加工変形抵抗を低下させるこ
とができる。 このようなりオイル組成物は、脂肪酸エステル、脂肪族
アルコール又は脂肪酸などからなる鉱物油系又は合成油
系の高粘度(30〜l O0cst/40℃)油種であ
る。 例えば、■植物系の脂肪酸エステルの合成油とポリエチ
レングリコールを含む粘度37cst/40℃のりオイ
ル(Grace、商品名MACK545AB)、■ナフ
テン系鉱物油、油脂、脂肪酸のアルキレングリコールエ
ステル、アルキルリン酸エステル及びカリウム石ケンを
含む粘度72cst/4G’Cのリオイル(NaLco
、商品名XL−174L)、■脂肪酸エステルの合成油
で粘度33cst/40’Cのリオイル(NaLco、
商品名6488AB)などがあり、市販されている。こ
のようなりオイルは50〜500mg/m”程度塗油さ
れている。 (発明が解決しようとする問題点) しかし乍ら、このような組成物のりオイルを素材表面に
予め塗油してDI成形′加工した場合、加工時に発生す
るアルミ摩耗粉とりオイル成分とが凝集し、DII形用
クーラントオイルを汚染したり或いは工具ダイスに付着
し、蓄積したものは飛散して、成形加工したDI缶表面
に付着し、表面欠陥となることがある。 すなわち、第2図の缶胴材料の製造工程を例として具体
的に説明すると、まず、素材の脱脂洗浄工程で素材表面
のアルミ摩耗粉を除去した後、リオイルを塗油するが、
次工程のカップ成形時にカップ側壁にアルミ摩耗粉が発
生すると、しごき加工、トリミング後に行うウオッシャ
−洗浄・乾燥・化成処理工程において側壁に表面欠陥が
検出されることになる(第3図参照)。 この表面欠陥は、軽度であれば後工程で脱脂洗浄すれば
除去できるが、中度・重度となれば缶表、面に黒色の斑
点模様として残存することになる。 本発明は、か)る状況に鑑みてなされたものであって、
成形性を損なうことなく、DII形加工時のアルミ摩耗
粉の発生量を少なくでき、DI缶の表面欠陥の発生を低
減し得る成形性が優れたりオイル組成物を提供すること
を目的とするものである。 (問題点を解決するための手段) 前記目的を達成するため、本発明者は、まず、従来のり
オイル組成物と表面欠陥成分との関係について分析した
。 従来のりオイル組成物は、前述のように脂肪酸エステル
、脂肪族アルコール又は脂肪酸などからなるものである
が、これらの成分はクーラント成分中の油及び脂肪酸、
乳化剤と共にDI成成形加工工時発生したアルミ摩耗粉
と混合反応し、脂肪酸とアルミとのケン化による脂肪酸
塩(例、金属石ケン)を形成する。この脂肪酸塩は溶剤
に不溶であるため、クーラントの汚れの蓄積又は工具ダ
イスの汚れとなり、飛散してDI缶表面に付着している
。 したがって、本発5明者は、まず加工時のアルミ摩耗粉
の発生量を少なくすることができるならば、アルミ摩耗
粉とりオイル成分との反応を抑制することが可能である
との知見のもとに、鋭意研究を重ねた結果、従来のりオ
イルに一般の低粘度鉱物油を添加して希釈するならば、
DII形加工の潤滑性を損なうことなく、加工時のアル
ミ摩耗粉の発生量を少なくでき、、シたがって、クーラ
ントやダイスの汚れが少なく、DI缶表面への付着を低
減でき、表面欠陥の発生を低減できることを見出したも
のである。 すなわち、本発明は、脂肪酸エステル、脂肪族アルコー
ル及び脂肪酸からなる群から選ばれる1種又は2種以上
の潤滑油に、低粘度鉱物油を添加してなることを特徴と
する成形性に優れたキャン用潤滑油組成物を要旨とする
ものである。 以下に本発明を更に詳述する。 前述の如く、本発明のりオイル組成物は、従来のりオイ
ル組成物(すなわち、脂肪酸エステル。 脂肪族アルコール及び脂肪酸からなる群から選ばれる1
種又は2種以上)に、低粘度鉱物油を添加したものであ
る。 添加する低粘度鉱物油としては、特に制限されず、例え
ば、アルミ用冷間圧延油(パラフィン系炭化水素)で粘
度2.0〜4 、 Ocst/40℃のものを挙げるこ
とができる。このような低粘度鉱物油は20〜80%、
好ましくは20〜60%を混合するのが望ましい、低粘
度鉱物油の添加濃度が低すぎると表面欠陥の低減効果が
小さく、また添加濃度が高すぎると表面欠陥の低減効果
が飽和すると共に成形性が悪くなる傾向にある。 なお、塗油量は従来のりオイルの場合と同様であり、特
に制限されない。 以下に本発明の実施例を示す。 (実施例) JIS3004相当のアルミニウム合金からなる板厚0
 、4 amのリドリンN8脱脂材の表面に、第1表に
示す組成のりオイル組成物200 mg/m”を塗油し
、以下に示す条件にてカップ成形、しごき加工を行い、
脱脂した。脱脂後、脱脂のままのカップ表面に付着した
摩耗粉量を測定すると共に表面欠陥性を評価し、また黒
スジ性(成形性)についても評価した。その結果を第1
表及び第1表に示す。 互72處展粂止 潤滑油:白石ユニソルブルDI  25%ブランク径:
131.5鵬鳳φ 素材板厚:0.4+u+ 絞り比:(ブランク径)/(ポンチ径)=131.5/
73.7= 1.78 シワ押え圧: 2 、5 kg/cm”友ぶm口E庄 潤滑油:白石ユニソルブルDI  10%しごき加工率
: (素材厚−壁厚)バ素材厚)X100=65%l巌条止 (1)リドリンNHCl00A2%、50℃、1分(2
)有機溶剤(四塩化炭素)超音波併用 1分
(Industrial Application Field) The present invention relates to a lubricating oil composition for cans, and more specifically,
This invention relates to a so-called re-oil composition that is applied to the surface of aluminum cans such as beverage cans and food cans in advance when forming the can body material (can material). (Prior art) Generally, during can forming processing (DI processing) such as cup forming processing and ironing forming processing, DI processing is performed using a lubricating oil that is an emulsion of mineral oil or synthetic oil. With the recent thinning of can shapes and the speeding up of molding processes, DI molding processes are becoming increasingly difficult to lubricate. As a result, the lubrication between the tool and the material during molding becomes poor and seizure occurs, resulting in black sushi-like defects (black spots) on the surface of the molded DI can even after degreasing and cleaning or printing. Remaining streaks (referred to as streaks) were often observed, and there were problems with moldability. For this reason, as a measure to improve black streaks, in recent years Re-Oil has been applied to the surface of can materials.
The method of applying oil in advance as nt has come to be adopted. Re-oil is similar to the undiluted emulsion type lubricating oil used in the molding process of one can, but such oil (
By pre-applying lubricating oil to the surface of the material using electrostatic oiling, even if the concentration of lubricating oil for molding is low,
The lubricity of the material is improved and the resistance to processing deformation can be reduced. Such an oil composition is a mineral oil-based or synthetic oil-based high viscosity (30 to 1 O0cst/40°C) oil type made of fatty acid ester, aliphatic alcohol, fatty acid, or the like. For example, ■ 37cst/40°C viscosity glue oil (Grace, product name MACK545AB) containing synthetic oil of vegetable fatty acid ester and polyethylene glycol, ■ naphthenic mineral oil, fats and oils, alkylene glycol ester of fatty acid, alkyl phosphate ester, Lio oil (NaLco) with a viscosity of 72cst/4G'C containing potassium soap
, trade name XL-174L), ■LiOil (NaLco,
It is commercially available under the trade name 6488AB). In this way, approximately 50 to 500 mg/m'' of oil is applied. (Problem to be solved by the invention) However, it is necessary to pre-apply oil of such a composition to the surface of the material and perform DI molding. 'When processing, the aluminum abrasion powder removal oil component generated during processing aggregates and contaminates the coolant oil for the DII type or adheres to the tool die, and the accumulated material scatters and damages the surface of the formed DI can. Specifically, using the manufacturing process of can body material shown in Figure 2 as an example, first, the aluminum abrasion powder on the surface of the material was removed in the degreasing and cleaning process of the material. After that, apply re-oil,
If aluminum abrasion powder is generated on the side wall of the cup during cup forming in the next step, surface defects will be detected on the side wall during the washer cleaning, drying, and chemical conversion treatment steps performed after ironing and trimming (see Figure 3). If this surface defect is mild, it can be removed by degreasing and cleaning in a post-process, but if it is moderate or severe, it will remain as a black speckled pattern on the surface of the can. The present invention was made in view of the above situation, and
The purpose is to provide an oil composition with excellent formability that can reduce the amount of aluminum abrasion powder generated during DII shape processing without impairing formability and reduce the occurrence of surface defects on DI cans. It is. (Means for Solving the Problems) In order to achieve the above object, the present inventor first analyzed the relationship between conventional glue oil compositions and surface defect components. Conventional glue oil compositions are composed of fatty acid esters, fatty alcohols, fatty acids, etc. as described above, but these components are the oil and fatty acids in the coolant components.
Together with the emulsifier, it mixes and reacts with aluminum abrasion powder generated during DI molding processing, and forms fatty acid salts (eg, metal soap) by saponifying fatty acids and aluminum. Since this fatty acid salt is insoluble in the solvent, it becomes an accumulation of dirt in the coolant or dirt on the tool die, and is scattered and attached to the surface of the DI can. Therefore, the inventors of the present invention have found that if the amount of aluminum wear powder generated during machining can be reduced, it is possible to suppress the reaction between the aluminum wear powder and the oil component. As a result of extensive research, we found that if conventional glue oil is diluted with general low-viscosity mineral oil,
The amount of aluminum abrasion powder generated during processing can be reduced without compromising the lubricity of DII type processing, thus reducing the amount of dirt on coolant and dies, reducing adhesion to the DI can surface, and reducing surface defects. It has been discovered that the occurrence of this phenomenon can be reduced. That is, the present invention provides a lubricating oil with excellent moldability characterized by adding a low-viscosity mineral oil to one or more lubricating oils selected from the group consisting of fatty acid esters, fatty alcohols, and fatty acids. The gist is a lubricating oil composition for cars. The present invention will be explained in further detail below. As mentioned above, the seaweed oil composition of the present invention is different from conventional seaweed oil compositions (i.e., fatty acid esters, one selected from the group consisting of fatty alcohols and fatty acids).
(or two or more types) to which low viscosity mineral oil is added. The low-viscosity mineral oil to be added is not particularly limited, and examples thereof include cold-rolling oil for aluminum (paraffinic hydrocarbon) with a viscosity of 2.0 to 4 and an ocst/40°C. Such low viscosity mineral oil has a content of 20-80%,
It is preferable to mix 20 to 60% of the low viscosity mineral oil. If the concentration of low viscosity mineral oil added is too low, the effect of reducing surface defects will be small, and if the concentration of addition is too high, the effect of reducing surface defects will be saturated and the moldability will decrease. tends to get worse. Note that the amount of oil applied is the same as in the case of conventional glue oil, and is not particularly limited. Examples of the present invention are shown below. (Example) Plate thickness 0 made of aluminum alloy equivalent to JIS3004
, 4 am of Ridrin N8 degreasing material was coated with 200 mg/m'' of the glue oil composition shown in Table 1, and cup-formed and ironed under the conditions shown below.
Degreased. After degreasing, the amount of abrasion powder adhering to the still degreased cup surface was measured and the surface defects were evaluated, and the black streak property (formability) was also evaluated. The result is the first
It is shown in Table and Table 1. Mutual 72-layer lubricating oil: Shiraishi Unisorb DI 25% Blank diameter:
131.5 Pengho φ Material plate thickness: 0.4+u+ Drawing ratio: (Blank diameter) / (Punch diameter) = 131.5 /
73.7 = 1.78 Wrinkle pressing pressure: 2.5 kg/cm" Tomobu m mouth E-sho Lubricating oil: Shiraishi Unisorb DI 10% ironing rate: (Material thickness - Wall thickness) Bar material thickness) X100 = 65 %l Ganjotome (1) Ridrin NHCl00A 2%, 50°C, 1 minute (2
) Organic solvent (carbon tetrachloride) combined with ultrasound 1 minute

【以下余白】[Left below]

第1表及び第1図より明らかなとおり、従来のりオイル
を用いた場合には、黒スジ性は良好であるものの1表面
欠陥性が悪いのに対し、従来のりオイルに圧延油を添加
した本発明例では、アルミ摩耗量が少なく、表面欠陥性
が良好であり、しかも黒スジ性も良好である。 (発明の効果) 以上詳述したように1本発明によれば、従来のりオイル
に低粘度鉱物油を添加したものをリオイル、とするので
、成形性を損なうことなく、アルミ摩耗粉量を少なくし
てリオイル成分との反応を効果的に抑えることができ、
表面欠陥性に優れた缶胴材を製造することが可能である
As is clear from Table 1 and Figure 1, when the conventional glue oil was used, the black streak resistance was good but the surface defect property was poor, whereas the conventional glue oil with rolling oil added In the invention example, the amount of aluminum wear is small, the surface defect property is good, and the black streak property is also good. (Effects of the Invention) As detailed above, according to the present invention, re-oil is made by adding low-viscosity mineral oil to conventional glue oil, so the amount of aluminum wear particles can be reduced without impairing formability. can effectively suppress the reaction with the reoil component.
It is possible to produce a can body material with excellent surface defect properties.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は低粘度鉱物油(圧延油)に対する従来のりオイ
ル混合濃度(%)とアルミ摩耗粉量並びに表面欠陥及び
成形性との関係を示す図、 第2図は缶胴材料の製造工程を示す説明図、第3図(a
)、(b)はDI成形加工後の缶表面に表面欠陥(図中
、黒点)が残存している状態を示す図である。 特許出願人  株式会社神戸製鋼所 代理人弁理士 中  村   尚
Figure 1 shows the relationship between the concentration (%) of conventional glue oil mixed with low-viscosity mineral oil (rolling oil), the amount of aluminum wear debris, surface defects, and formability. Figure 2 shows the manufacturing process of can body material. An explanatory diagram shown in Fig. 3 (a
) and (b) are diagrams showing a state in which surface defects (black dots in the figure) remain on the can surface after DI molding. Patent applicant Hisashi Nakamura, patent attorney representing Kobe Steel, Ltd.

Claims (1)

【特許請求の範囲】[Claims] 脂肪酸エステル、脂肪酸アルコール及び脂肪酸からなる
群から選ばれる1種又は2種以上の潤滑油に、低粘度鉱
物油を添加してなることを特徴とする成形性に優れたキ
ャン用潤滑油組成物。
A can lubricating oil composition having excellent moldability, characterized in that it is made by adding a low viscosity mineral oil to one or more lubricating oils selected from the group consisting of fatty acid esters, fatty acid alcohols, and fatty acids.
JP62334084A 1987-12-29 1987-12-29 Lubricating oil composition for can having excellent moldability Granted JPH01174596A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62334084A JPH01174596A (en) 1987-12-29 1987-12-29 Lubricating oil composition for can having excellent moldability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62334084A JPH01174596A (en) 1987-12-29 1987-12-29 Lubricating oil composition for can having excellent moldability

Publications (2)

Publication Number Publication Date
JPH01174596A true JPH01174596A (en) 1989-07-11
JPH0416515B2 JPH0416515B2 (en) 1992-03-24

Family

ID=18273343

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62334084A Granted JPH01174596A (en) 1987-12-29 1987-12-29 Lubricating oil composition for can having excellent moldability

Country Status (1)

Country Link
JP (1) JPH01174596A (en)

Also Published As

Publication number Publication date
JPH0416515B2 (en) 1992-03-24

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