JP5000905B2 - Lubricating oil for press for precoated aluminum alloy plate and method for pressing precoated aluminum alloy plate using the same - Google Patents
Lubricating oil for press for precoated aluminum alloy plate and method for pressing precoated aluminum alloy plate using the same Download PDFInfo
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本発明は、プレコートアルミニウム合金板をプレス加工する際に供給する、プレス用潤滑油に関する。 The present invention relates to a lubricating oil for pressing supplied when a precoated aluminum alloy sheet is pressed.
一般に、プレコートアルミニウム板は、圧延で製造されたアルミニウム合金板を、任意の洗浄あるいは化成処理を施し、ロールコーター等によって、両面あるいは片面に樹脂塗料を塗装し、１００℃以上の加熱炉にて、焼付けして樹脂皮膜を形成し製造される。プレコートアルミニウム板の特徴は、その樹脂皮膜に機能物質を含有させることによって、導電性、高反射性、高潤滑性、耐指紋性等、様々な機能を持たせている。 In general, the pre-coated aluminum plate is an aluminum alloy plate produced by rolling, optionally subjected to cleaning or chemical conversion treatment, and coated with a resin coating on both sides or one side by a roll coater or the like, in a heating furnace of 100 ° C. or higher, It is manufactured by baking to form a resin film. The precoated aluminum plate has various functions such as conductivity, high reflectivity, high lubricity, and fingerprint resistance by incorporating a functional substance into the resin film.
プレコートアルミニウム合金板をプレス加工する際、プレス潤滑油が供給されるが、そのプレス潤滑油は、プレコートアルミニウム合金板の潤滑性を補助する目的のほか、金型の冷却、磨耗粉等の清浄化の目的で使用される。このため、プレコートアルミニウム合金板のプレス用潤滑油には、後工程である洗浄工程にて容易に除去される性質が要求されるため、添加剤としては、高級アルコールやエステル等の脱脂し易い油性剤がよく使用されている。しかしながら、このような従来技術では、プレス加工時の条件にもよるが、金型と樹脂塗膜との接触により、樹脂塗膜が微量に磨耗して磨耗粉が発生し、プレス回数とともに、その磨耗粉が金型に付着堆積し、結果としてプレス成形品の寸法誤差を大きくしたり、表面に傷をつけるという問題がある。 When pre-coated aluminum alloy sheets are pressed, press lubricant is supplied. The press lubricant is used to assist the lubricity of the pre-coated aluminum alloy sheet, as well as to cool molds and clean up wear particles. Used for purposes. For this reason, the lubricating oil for pressing precoated aluminum alloy sheets is required to have a property that can be easily removed in the washing process, which is a subsequent process. Agents are often used. However, in such a conventional technology, although depending on the conditions at the time of pressing, the contact between the mold and the resin coating film causes the resin coating film to be worn in a small amount and generate abrasion powder. There is a problem that the wear powder adheres to and accumulates on the mold, and as a result, the dimensional error of the press-molded product is increased or the surface is damaged.
本発明は、かかる従来の問題点に鑑みてなされたもので、プレコートアルミニウム合金板をプレス加工する際に、優れた潤滑性、磨耗粉の分散性、及び被洗浄性を有するプレス用潤滑油を提供しようとするものである。なお、本明細書中の「アルミニウム合金板」は、アルミニウムを主体とする金属板及び合金板の総称であり、いわゆるアルミニウム合金の板だけでなく、純アルミニウムの板を含む概念である。 The present invention has been made in view of such conventional problems, and when press-working a precoated aluminum alloy plate, a lubricating oil for press having excellent lubricity, dispersibility of wear powder, and washability is obtained. It is something to be offered. The “aluminum alloy plate” in this specification is a general term for a metal plate and an alloy plate mainly composed of aluminum, and is a concept including not only a so-called aluminum alloy plate but also a pure aluminum plate.
第１の発明は、アルミニウム合金板の両面あるいは片面に樹脂皮膜を有するプレコートアルミニウム合金板をプレス加工する際に用いられるプレス用潤滑油であって、
炭素数４〜１８のアルキル基を有するアルキルスルホン酸塩を０．１〜５．０％（重量％、以下同じ）含有し、
残部に、ポリイソブチレン、ノンアロマ鉱油、パラフィン鉱油、及び全炭素数が１４〜１８であるαオレフィンから選ばれる１種あるいは２種以上からなる基油を含有し、
上記プレス用潤滑油の動粘度が、１．１〜１００ｃＳｔ（ａｔ４０℃）であることを特徴とするプレス用潤滑油にある（請求項１）。
1st invention is the lubricating oil for press used when pressing the precoat aluminum alloy plate which has a resin film on both surfaces or one side of an aluminum alloy plate,
Containing 0.1 to 5.0% (wt%, the same shall apply hereinafter) of an alkyl sulfonate having an alkyl group having 4 to 18 carbon atoms ,
The balance contains a base oil composed of one or more selected from polyisobutylene, non-aromatic mineral oil, paraffin mineral oil, and α-olefin having a total carbon number of 14 to 18 ,
The kinematic viscosity of the pressing lubricant is 1.1 to 100 cSt (at 40 ° C.).
本発明のプレコートアルミニウム合金板用のプレス用潤滑油は、アルキルスルホン酸塩を含有し、動粘度を上記特定の範囲に調整することにより、プレコートアルミニウム合金板をプレス加工する際に、優れた潤滑性、磨耗粉の分散性、及び被洗浄性を有するものとなる。 The lubricating oil for presses for precoated aluminum alloy sheets of the present invention contains an alkyl sulfonate and has excellent lubrication when pressing precoated aluminum alloy sheets by adjusting the kinematic viscosity to the above specific range. , Dispersibility of wear powder, and washability.
第２の発明は、プレコートアルミニウム合金板のプレス加工時に、第１の発明のプレス用潤滑油を用いることを特徴とするプレコートアルミニウム合金板のプレス方法にある（請求項２）。
本発明のプレコートアルミニウム合金板のプレス方法は、プレコートアルミニウム合金板のプレス加工時に、第１の発明のプレス用潤滑油を用いるため、磨耗粉の分散性が優れ、磨耗粉が金型に堆積付着し難くなり、寸法誤差や、板表面に傷をつけることなくプレス加工を行うことができる。
The second invention, when pressing the pre-coated aluminum alloy plate is in the press process of precoated aluminum alloy sheet, which comprises using a press lubricant to the first invention (Claim 2).
The press method of the precoated aluminum alloy plate of the present invention uses the lubricating oil for press of the first invention when pressing the precoated aluminum alloy plate, so that the dispersibility of the wear powder is excellent, and the wear powder is deposited on the mold. It becomes difficult to perform press working without dimensional error and scratching on the plate surface.
第１の発明のプレス用潤滑油においては、上述したように、アルキルスルホン酸塩を０．１〜５．０％（重量％、以下同じ）含有する。
これにより、磨耗粉を分散させるという分散効果に優れ、磨耗粉が金型に堆積付着し難くなるという効果を得ることができる。
In the press lubricating oil of the first invention, as described above, the alkyl sulfonate is contained in an amount of 0.1 to 5.0% (% by weight, the same applies hereinafter).
Thereby, it is excellent in the dispersion | distribution effect of disperse | distributing abrasion powder, and the effect that abrasion powder becomes difficult to deposit and adhere to a metal mold | die can be acquired.
上記アルキルスルホン酸塩の含有量が０．１％未満の場合には、上記分散効果が乏しくなるという問題があり、一方、上記アルキルスルホン酸塩の含有量が５．０％を超える場合には、上記分散効果に向上が見られず、コストアップにつながるという問題がある。 When the content of the alkyl sulfonate is less than 0.1%, there is a problem that the dispersion effect becomes poor. On the other hand, when the content of the alkyl sulfonate exceeds 5.0%, However, there is a problem that the dispersion effect is not improved and the cost is increased.
上記アルキルスルホン酸塩としては、具体的に、例えば、アルキルアリルスルホン酸、アミドスルホン酸塩、ジアルキルスルホこはく酸ナトリウムなどが挙げられる。特に、工業的に安価なジアルキルスルホこはく酸ナトリウムが好ましい。また、上記アルキルスルホン酸塩のアルキル基の炭素数は４〜１８であることが好ましい。
上記アルキルスルホン酸塩のアルキル基の炭素数が３以下である場合には、潤滑油への溶解性が低下し、析出するおそれがあり、一方、上記アルキル基の炭素数が１９以上である場合には、温度が低下した場合に、固化、析出するおそれがある。
Specific examples of the alkyl sulfonate include alkyl allyl sulfonic acid, amide sulfonate, sodium dialkyl sulfo succinate and the like. In particular, industrially inexpensive sodium dialkylsulfosuccinate is preferred. Moreover, it is preferable that carbon number of the alkyl group of the said alkyl sulfonate is 4-18.
When the carbon number of the alkyl group of the alkyl sulfonate is 3 or less, the solubility in the lubricating oil may be reduced and may precipitate, while the carbon number of the alkyl group is 19 or more. May solidify and precipitate when the temperature drops.
また、上記プレス用潤滑油は、残部に、基油を含有する。
また、上記基油の含有量は、基本的に、上記添加剤の含有量が確保できる範囲とし、潤滑不足を防ぎ、適正な成形性を確保する。
The press lubricating oil contains a base oil in the balance.
In addition, the content of the base oil is basically in a range in which the content of the additive can be ensured to prevent insufficient lubrication and ensure proper moldability.
また、上記プレス用潤滑油の動粘度は１．１〜１００ｃＳｔ（ａｔ４０℃）である。
これにより、洗浄工程にて容易に除去される優れた被洗浄性、及び優れた取り扱い性を得ることができる。
上記動粘度が１．１ｃＳｔ未満の場合には、油の導入量が少なくなり、焼き付きが発生したり、磨耗粉を除去し難くなるという問題があり、一方、上記動粘度が１００ｃＳｔを超える場合には、取り扱いが困難になるという問題がある。
The kinematic viscosity of the press lubricant is 1.1 to 100 cSt (at 40 ° C.).
Thereby, the outstanding to-be-cleaned property removed easily at the washing | cleaning process, and the outstanding handleability can be obtained.
When the kinematic viscosity is less than 1.1 cSt, there is a problem that the amount of oil introduced decreases, seizure occurs, and it becomes difficult to remove the abrasion powder. On the other hand, when the kinematic viscosity exceeds 100 cSt. Has a problem that handling becomes difficult.
上記動粘度は、ＪＩＳ Ｋ ２２８３の「原油及び石油製品の動粘度試験方法」に準拠して４０℃における動粘度を測定し、測定器具としては、ＪＩＳ Ｋ ２８３９の「石油類試験用ガラス器具」のキャノン−フェンスケ動粘度計を用いて測定することができる。 The kinematic viscosity is measured in accordance with JIS K 2283 “Kinematic Viscosity Test Method for Crude Oil and Petroleum Products” at 40 ° C. The measuring instrument is JIS K 2839 “Petroleum equipment for petroleum testing”. This can be measured using a Canon-Fenske kinematic viscometer.
なお、必須成分としてアルキルスルホン酸塩のみを含有する場合、上記基油の合計含有量は、９５〜９９．９％の範囲となる。アルキルスルホン酸塩と基油との合計が１００％となるように、基油の合計含有量が変化する。
また、本発明のプレス用潤滑油は、上記アルキルスルホン酸塩と上記基油とにより１００％になるものであるが、実使用に際して、上述の優れた効果を安定的に操業するために、上記１００％の外に、必要に応じて、酸化防止剤、錆止め剤、腐食防止剤、消泡剤等の一種又は二種以上をさらに添加することも勿論可能である。
In addition, when only an alkyl sulfonate is contained as an essential component, the total content of the base oil is in the range of 95 to 99.9%. The total content of the base oil changes so that the total of the alkyl sulfonate and the base oil is 100%.
Further, the press lubricating oil of the present invention is 100% due to the alkyl sulfonate and the base oil, but in actual use, in order to stably operate the above excellent effects, In addition to 100%, it is of course possible to further add one or more of an antioxidant, a rust inhibitor, a corrosion inhibitor, an antifoaming agent, and the like as necessary.
上記酸化防止剤としては、例えば、ＤＢＰＣ（２，６−ジターシャリーブチル−Ｐ−クレゾール）等のフェノール系化合物、フェニル−α−ナフチルアミン等の芳香族アミン、ソルビタンモノオレート等の多価アルコールの部分エステル、リン酸エステル及びその誘導体等が挙げられる。
上記錆止め剤としては、例えば、ジノニルナフタレンスルホン酸バリウム等が挙げられる。
上記腐食防止剤としては、例えば、ベンゾトリアゾール等が挙げられる。
上記消泡剤としては、例えば、シリコン系のものが挙げられる。
Examples of the antioxidant include phenolic compounds such as DBPC (2,6-ditertiarybutyl-P-cresol), aromatic amines such as phenyl-α-naphthylamine, and polyhydric alcohol moieties such as sorbitan monooleate. Examples thereof include esters, phosphate esters and derivatives thereof.
Examples of the rust inhibitor include barium dinonylnaphthalene sulfonate.
Examples of the corrosion inhibitor include benzotriazole.
Examples of the antifoaming agent include silicon-based ones.
上記基油は、ポリイソブチレン、全炭素数が１４〜１８であるαオレフィン、及び精製鉱油の１種あるいは２種以上からなることが好ましい。
上記ポリイソブチレンを使用する場合には、高圧粘度が比較的高くなり、粘度のわりに洗浄性に優れた潤滑油を得ることができる。
The base oil is preferably composed of one or more of polyisobutylene, α-olefin having 14 to 18 carbon atoms, and refined mineral oil .
When the polyisobutylene is used, the high-pressure viscosity becomes relatively high, and a lubricating oil having excellent detergency can be obtained instead of the viscosity.
上記αオレフィンを使用する場合には、揮発性や、金属金型との摩擦潤滑性が向上するという効果を得ることができる。
上記αオレフィンの全炭素数が１４未満である場合には、潤滑性が低下するというおそれがあり、一方、上記αオレフィンの全炭素数が１８を超える場合には、冬季に固化し易くなるおそれや、取り扱いが困難になるというおそれがある。
When the α olefin is used, the effect of improving volatility and friction lubricity with a metal mold can be obtained.
When the total carbon number of the α-olefin is less than 14, the lubricity may be lowered. On the other hand, when the total carbon number of the α-olefin exceeds 18, the solidification is likely to occur in winter. In addition, it may be difficult to handle.
また、上記精製鉱油としては、環境の観点から、ノンアロマ鉱油やパラフィン鉱油であることが好ましい。
上記基油は、被洗浄性、油導入性、環境を考慮して選択することができる。
The refined mineral oil is preferably non-aromatic mineral oil or paraffin mineral oil from the viewpoint of the environment.
The base oil can be selected in consideration of washability, oil introduction property, and environment.
本発明のプレス用潤滑油にかかる実施例について説明する。
本例では、表１及び表２に示すごとく、本発明の実施例として、複数種類のプレス用潤滑油（試料Ｅ１〜試料Ｅ８）と、比較例として複数種類のプレス用潤滑油（試料Ｃ１〜Ｃ４）を作製し、各種性能の比較試験を行った。
各試料Ｅ１〜Ｅ８及び試料Ｃ１〜Ｃ４のプレス用潤滑油について、基油、アルキルスルホン酸塩、動粘度等を、表１及び表２にそれぞれ示す。
Examples of the lubricating oil for press according to the present invention will be described.
In this example, as shown in Tables 1 and 2, as examples of the present invention, as a working example of the present invention, a plurality of types of press lubricants (samples E1 to E8) and a comparative example of a plurality of types of press lubricants (samples C1 to C1). C4) was prepared, and various performance comparison tests were performed.
Tables 1 and 2 show the base oils, alkyl sulfonates, kinematic viscosities, and the like for the pressing lubricants of Samples E1 to E8 and Samples C1 to C4, respectively.
表１及び表２の記号を説明する。
Ａ１：動粘度０．６ｃＳｔ（ａｔ４０℃）のパラフィン系鉱油
Ａ２：動粘度１．３ｃＳｔ（ａｔ４０℃）のパラフィン系鉱油
Ａ３：動粘度３９．８ｃＳｔ（ａｔ４０℃）のパラフィン系鉱油
Ａ４：動粘度９９．７ｃＳｔ（ａｔ４０℃）のパラフィン系鉱油
Ａ５：動粘度１４０ｃＳｔ（ａｔ４０℃）のパラフィン系鉱油
Ｂ１：動粘度２．７ｃＳｔ（ａｔ４０℃）のポリイソブチレン
Ｂ２：動粘度９５ｃＳｔ（ａｔ４０℃）のポリイソブチレン
Ｂ３：動粘度２０５ｃＳｔ（ａｔ４０℃）のポリイソブチレン
Ｃ１：直鎖オレフィン（炭素数１６及び１８の等量混合物）
The symbols in Table 1 and Table 2 will be described.
A1: Paraffinic mineral oil with kinematic viscosity 0.6 cSt (at 40 ° C) A2: Paraffinic mineral oil with kinematic viscosity 1.3 cSt (at 40 ° C) A3: Paraffinic mineral oil with kinematic viscosity 39.8 cSt (at 40 ° C) A4: Kinematic viscosity 99 .7 cSt (at 40.degree. C.) paraffinic mineral oil A5: Kinematic viscosity 140 cSt (at 40.degree. C.) paraffinic mineral oil B1: Kinematic viscosity 2.7 cSt (at 40.degree. C.) polyisobutylene B2: Kinematic viscosity 95 cSt (at 40.degree. C.) polyisobutylene B3 : Polyisobutylene C having a kinematic viscosity of 205 cSt (at 40 ° C.) 1: Linear olefin (equal mixture of 16 and 18 carbon atoms)
作製した供試油を用い、以下の試験を行った。
＜成形高さ評価＞
供試材として、住友軽金属工業製プレコートアルミニウム板ＴＹ−ライトシルバー（板厚１ｍｍ、φ５０ｍｍ）を用い、φ５０ｍｍ、Ｒ＝２５の球頭ポンチ、成形速度２．０ｍｍ／ｓにて張出成形を行い、材料に割れが生じた高さを成形高さとした。上記供試油は、６００ｍｇ／ｍ2を供試材表面に均一に供給した。
（評価基準）
成形高さが１６ｍｍ以上の場合を合格、成形高さが１６ｍｍ未満の場合を不合格とした。
The following tests were performed using the prepared test oil.
<Molding height evaluation>
As a test material, a precoated aluminum plate TY-light silver (plate thickness 1 mm, φ50 mm) manufactured by Sumitomo Light Metal Industries, Ltd., bulge forming is performed at a ball head punch of φ50 mm, R = 25, a molding speed of 2.0 mm / s, The height at which the material cracked was defined as the molding height. The above test oil was uniformly supplied to the surface of the test material at 600 mg / m 2 .
(Evaluation criteria)
The case where the molding height was 16 mm or more was accepted, and the case where the molding height was less than 16 mm was rejected.
＜分散性評価＞
供試材として、住友軽金属工業製プレコートアルミニウム板ＴＹ−ライトシルバー（板厚１ｍｍ、φ５０ｍｍ）を用い、ピンオンディスク型試験機において、回転数４００ｒｐｍでＡ１０７０アルミニウムピン（５ｍｍＬ×φ５．０ｍｍ、３本をφ２３ｍｍに配列）と、摩擦試験を５ｍｉｎ間実施した。得られた磨耗粉を回収し、１０ｍＬの供試油を入れた試験管内に１０ｍＬの供試油と回収した磨耗粉とを混合し、スターラーにて５分間攪拌した後に、室温にて５分間静置し、外管を観察し、分散性を評価した。
（評価基準）
○：供試油の透明度が低い場合
×：磨耗粉の大部分が神殿している場合
評価結果が○を合格とし、×を不合格とした。
<Dispersibility evaluation>
As a test material, a precoated aluminum plate TY-light silver (plate thickness: 1 mm, φ50 mm) manufactured by Sumitomo Light Metal Industry was used, and in a pin-on-disk type testing machine, an A1070 aluminum pin (5 mmL × φ5.0 mm, 3 pieces) at a rotation speed of 400 rpm. and a friction test was performed for 5 minutes. The obtained wear powder is collected, 10 ml of the test oil and the collected wear powder are mixed in a test tube containing 10 ml of the test oil, stirred for 5 minutes with a stirrer, and then allowed to stand at room temperature for 5 minutes. The outer tube was observed and the dispersibility was evaluated.
(Evaluation criteria)
○: When the transparency of the test oil is low ×: When most of the abrasion powder is shrine The evaluation result is ○, and × is rejected.
＜被洗浄性評価＞
供試材として、住友軽金属工業製プレコートアルミニウム板ＴＹ−ライトシルバー（板厚１ｍｍ、φ５０ｍｍ）を用い、供試材の片面に供試油２００ｍｇ／ｍ2を塗布し、脱脂試験に供した。脱脂試験は、ガラス製５Ｌビーカーに純水を入れ、６０℃に加温した状態でスターラーにて攪拌し、供試材を５ｍｉｎ浸漬した後、エアーブローにて乾燥後の供試油残留重量を測定した。
（評価基準）
供試油残留重量が多くなるほど、被洗浄性が低下し、１８０ｇ／ｍ2以下を合格、１８０ｇ／ｍ2を超える場合を不合格とした。
<Evaluation of washability>
A precoated aluminum plate TY-light silver (plate thickness 1 mm, φ50 mm) manufactured by Sumitomo Light Metal Industry was used as a test material, and 200 mg / m 2 of test oil was applied to one side of the test material, which was subjected to a degreasing test. In the degreasing test, pure water was put into a glass 5 L beaker, stirred with a stirrer in a state heated to 60 ° C., the test material was immersed for 5 min, and the residual weight of the test oil after drying by air blowing was measured. It was measured.
(Evaluation criteria)
As the residual weight of the test oil increased, the washability decreased, and the case where 180 g / m 2 or less was passed and the case where it exceeded 180 g / m 2 was rejected.
＜取り扱い性評価＞
供試材として、住友軽金属工業製プレコートアルミニウム板ＴＹ−ライトシルバー（板厚１ｍｍ、φ５０ｍｍ）を使用し、供試油を５０ｍｇ／ｍ2塗布した供試板を２枚重ね合わせて、室温で、１°／ｓｅｃの速度にて、圧延方向を軸として回転させ、板同士がずれはじめた角度を計測し、供試油の取り扱い性を評価した。
（評価基準）
ずれ始めた角度が大きくなるほど、取り扱い性が低下し、９０°を下回る場合を合格、９０°以上を不合格とした。
<Handling evaluation>
As a test material, a precoated aluminum plate TY-light silver (plate thickness 1 mm, φ50 mm) manufactured by Sumitomo Light Metal Industry was used, and two test plates coated with 50 mg / m 2 of the test oil were overlapped at room temperature. The angle at which the plates began to shift was measured at a speed of ° / sec with the rolling direction as the axis, and the handleability of the sample oil was evaluated.
(Evaluation criteria)
The greater the angle at which it started to shift, the lower the handleability.
これらの評価結果を表３及び表４に示す。 These evaluation results are shown in Tables 3 and 4.
表３より知られるごとく、本発明の実施例である試料Ｅ１〜試料Ｅ８は、成形高さ、分散性、被洗浄性、取り扱い性のいずれの項目においても良好な結果を示した。 As is known from Table 3, Samples E1 to E8, which are examples of the present invention, showed good results in all items of molding height, dispersibility, washability, and handleability.
表４より知られるごとく、本発明の比較例である試料Ｃ１は、アルキルスルホン酸塩を含有していないため、分散効果が乏しくなり、分散性が不合格であった。
また、本発明の比較例である試料Ｃ２は、潤滑油全体の動粘度が本発明の下限を下回るため、潤滑油の導入量が減少し、成形高さが不合格であった。
また、本発明の比較例である試料Ｃ３及び試料Ｃ４は、潤滑油全体の動粘度が本発明の上限を上回るため、取り扱いが困難になり、被洗浄性及び取り扱い性が不合格であった。
As can be seen from Table 4, sample C1, which is a comparative example of the present invention, did not contain an alkyl sulfonate, so the dispersion effect was poor and the dispersibility was unacceptable.
Moreover, since the kinematic viscosity of the whole lubricating oil was less than the lower limit of the present invention, Sample C2, which is a comparative example of the present invention, had a reduced introduction amount of lubricating oil and a molding height that was not acceptable.
Moreover, since the kinematic viscosity of the whole lubricating oil exceeded the upper limit of this invention, the sample C3 and the sample C4 which are comparative examples of this invention became difficult to handle, and the washability and the handleability were unacceptable.
Claims (2)
炭素数４〜１８のアルキル基を有するアルキルスルホン酸塩を０．１〜５．０％（重量％、以下同じ）含有し、
残部に、ポリイソブチレン、ノンアロマ鉱油、パラフィン鉱油、及び全炭素数が１４〜１８であるαオレフィンから選ばれる１種あるいは２種以上からなる基油を含有し、
上記プレス用潤滑油の動粘度が、１．１〜１００ｃＳｔ（ａｔ４０℃）であることを特徴とするプレス用潤滑油。 A lubricating oil for pressing used when pressing a pre-coated aluminum alloy plate having a resin film on both sides or one side of the aluminum alloy plate,
Containing 0.1 to 5.0% (wt%, the same shall apply hereinafter) of an alkyl sulfonate having an alkyl group having 4 to 18 carbon atoms ,
The balance contains a base oil composed of one or more selected from polyisobutylene, non-aromatic mineral oil, paraffin mineral oil, and α-olefin having a total carbon number of 14 to 18 ,
The press lubricant, wherein the press lubricant has a kinematic viscosity of 1.1 to 100 cSt (at 40 ° C.).
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| US4505830A (en) * | 1981-09-21 | 1985-03-19 | The Lubrizol Corporation | Metal working using lubricants containing basic alkali metal salts |
| JPS61163998A (en) * | 1985-01-16 | 1986-07-24 | Idemitsu Kosan Co Ltd | Cold-rolling oil composition |
| JPH01153793A (en) * | 1987-12-10 | 1989-06-15 | Hakutou Kagaku Kk | Lubricating oil for forming and working aluminum |
| JPH01207394A (en) * | 1988-02-15 | 1989-08-21 | Mitsubishi Alum Co Ltd | Lubricant |
| JPH05214356A (en) * | 1992-02-03 | 1993-08-24 | Nippon Light Metal Co Ltd | Lubricating oil for cold rolling of aluminum |
| JP2002322487A (en) * | 2001-04-26 | 2002-11-08 | Idemitsu Kosan Co Ltd | Lubricating oil composition for metal working |
| JP3808044B2 (en) * | 2003-02-28 | 2006-08-09 | 住友軽金属工業株式会社 | Fin press lubricant |
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