JPH1085872A - Manufacturing method of DI can - Google Patents

Abstract

(57) [Problem] To develop a method for producing a DI can excellent in draw formability, ironing workability, and washability. SOLUTION: After a predetermined amount of a water-insoluble draw forming lubricant composition having a predetermined kinematic viscosity is applied to each surface of a metal plate using a gravure roll and drawn and formed, the drawn formed product is indispensable. As components, A) an ester of a trihydric alcohol and a fatty acid having 18 carbon atoms, B) a monobasic and / or dibasic fatty acid having 8 to 12 carbon atoms, C) a ricinoleic acid condensate and / or a fatty acid having 18 carbon atoms, D The ironing stock solution composition containing ironing agent such as E) monocyclohexylamine, E) monoethanolamine, etc., is ironed using a lubricant diluted to a predetermined ratio with water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a DI can, and more particularly, to a method for forming a can by drawing and ironing a metal plate.
The present invention relates to a method for manufacturing an I can.

[0002]

2. Description of the Related Art A DI can is a can which is formed by drawing (cupping) a metal plate and then ironing it. The body and the bottom have a seamless integral structure. is there. Draw-forming refers to a method of forming a cup with a bottom using a tool consisting of a punch and a die while holding a plate cut out in a disk shape with a wrinkle holding device. Refers to the process of thinning and extending the side wall of

Conventionally, when performing drawing and ironing, an emulsion-type lubricant has been used for both drawing and ironing, but a water-insoluble lubricant is used for drawing.
A method of using an emulsion-type lubricant or a so-called solution-type water-soluble lubricant having a lower oil content than the emulsion-type lubricant in ironing has been studied.

[0004] The can after molding is degreased and washed with an aqueous solution (washing solution) containing a surfactant, subjected to a surface chemical conversion treatment for corrosion prevention, and then subjected to painting and printing, followed by opening (mouth). (Necking) and edge bending (flange processing) are performed before shipment. Therefore, for the lubricant used in this application, not only lubricity, but also good degreasing and cleaning properties of the can after molding,
It is required that the cleaning waste liquid has good wastewater treatment properties. In particular, when a lubricant having good degreasing and cleaning properties is used, the concentration of the surfactant in the cleaning liquid can be reduced, so that the wastewater treatment property can be improved.

Under such a background, a method for producing cans from an emulsion type which has been conventionally mainly used by using a water-insoluble lubricant for drawing and a solution-type water-soluble lubricant for ironing. Is being considered.

[0006]

When a water-insoluble lubricant is used for drawing, it is necessary to control the amount of the water-insoluble lubricant to be applied to the aluminum sheet or steel sheet before forming to a preferable range. If the amount of the lubricant is excessive, there arises a problem that the plate does not slip (slip) by a plate feed roll provided for feeding the aluminum plate or the steel plate to the drawing apparatus. In addition, if a large amount of oil remains in the molded product (cup) after drawing, the bottom of the cup is stuck to the cup transport line, and cannot be smoothly sent to the ironing device, thereby impairing the productivity of the can.

Further, when the amount of the lubricant is excessive, a slip (slip) occurs between the plate and the wrinkle holding portion in the wrinkle holding portion at the time of drawing, and the holding force is reduced. Wrinkles occur and partial plate elongation occurs, so-called "ears" occur. When wrinkles occur, the plate thickness of the can flange portion becomes uneven, but when the plate thickness becomes uneven, seizure due to insufficient lubrication occurs in the thicker portion in the subsequent ironing process, called bleed-through. Surface defects occur. Further, the unevenness of the plate thickness causes necking cracks in necking, which is the final forming step. In addition, the cup with the "ears" is caught by the "ears" on the transport line sent to the ironing device in the post-process, and cannot be sent to the ironing device smoothly.
This causes a problem of impairing the productivity of the can.

[0008] If the amount of the lubricant is too small, the drawability is reduced, which causes troubles such as breakage of the cup. As described above, to establish a method of manufacturing cans using water-insoluble lubricants for drawing and solution-type water-soluble lubricants for ironing, which exhibit excellent properties in many respects It is necessary to establish a technique for controlling the amount of the water-insoluble lubricant applied to the aluminum sheet or the steel sheet before forming to a preferable range.

[0009]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and as a result, applied a certain amount of a drawing forming lubricant having a specific viscosity to a metal plate using a gravure roll. According to a method of producing a DI can by drawing after oiling, and then ironing using an ironing lubricant having a specific composition, it was found that the above-mentioned problems could be solved, and the present invention was completed. I came to.

That is, according to the present invention, a water-insoluble drawing forming lubricant composition having a kinematic viscosity at 40 ° C. of 5 to 50 mm ² / s is applied to each surface of a metal plate by using a gravure roll in an amount of 50 to 6 mm.
After applying oil of 00 mg / m ² and drawing, the drawn product was obtained by: (A) ester of trihydric alcohol and fatty acid having 18 carbon atoms, 10 to 20% by mass, (B) A monobasic and / or dibasic fatty acid having 8 to 12 carbon atoms, 2 to 6% by mass, (C) a ricinoleic acid condensate and / or a fatty acid having 18 carbon atoms, 15 to 30% by mass, (D) monoethanolamine, Ironing iron containing diethanolamine or triethanolamine, 10 to 15% by mass, (E) monocyclohexylamine, dicyclohexylamine or tricyclohexylamine, 5 to 10% by mass, and (F) water, 3 to 58% by mass as essential components. DI can, characterized in that the stock solution for processing lubricant is ironed using a lubricant diluted 10 to 200 times (weight ratio) with water. Is provided.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below.
In the method for manufacturing a DI can of the present invention, examples of the metal to be processed include aluminum, aluminum alloy (such as aluminum-manganese alloy), steel sheet, and surface-treated steel sheet (such as galvanized steel sheet and tin-plated steel sheet).

In the method for producing a DI can according to the present invention, the drawing is carried out using a water-insoluble drawing forming lubricant composition having a kinematic viscosity at 40 ° C. of 5 to 50 mm ² / s. The water-insoluble drawing lubricant composition, an upper limit of the kinematic viscosity at 40 ℃, 50mm ² / s, preferably 45 mm ² /
s, more preferably 40 mm ² / s, and the lower limit is 5 mm ²
/ S, preferably 5.5 mm ² / s, more preferably 6 mm ² / s
mm ² / s. If the kinematic viscosity at 40 ° C. exceeds 50 mm ² / s, the sticking of the cup, slipping, wrinkling, ears and the like are undesirably caused. On the other hand, if the kinematic viscosity at 40 ° C. is less than 5 mm ² / s, drawability is insufficient and the cup may be broken, which is not preferable. The drawing lubricant remaining on the cup surface after drawing contributes to lubrication between tools (punches, dies) and the cup surface during ironing, but the viscosity of the drawing lubricant is 5 mm ^2.
If it is less than / s, breakage occurs during ironing or scratches occur on the surface of the can after ironing, which significantly impairs the beauty of the can and reduces its commercial value.

The draw forming lubricant composition must be insoluble in water and substantially free of water. Here, the term "substantially free of water" means that the composition is not diluted with water at the time of use, does not contain water as a component, and has a water content of 1% by mass or less based on the total amount of the composition due to moisture absorption or the like. It represents that. In the present invention, any water-insoluble draw forming lubricant composition can be used as long as it falls within the above viscosity range. As the base oil, any of mineral oil, synthetic oil and fats and oils can be used.

As an example of a mineral base oil that can be used in the lubricant composition for drawing according to the present invention, a solvent fraction is removed from a lubricating oil fraction obtained by distilling crude oil under normal pressure and reduced pressure. Paraffin or naphthene obtained by appropriately combining one or more purification means such as solvent extraction, hydrocracking, solvent dewaxing, contact dewaxing, hydrorefining, sulfuric acid washing, and clay treatment. Mineral oil.

[0015] The fat base oils include beef tallow, lard,
Examples include soybean oil, rapeseed oil, rice bran oil, coconut oil, palm oil, palm kernel oil, and hydrogenated products thereof.

Examples of the synthetic base oils include polyolefins (ethylene-propylene copolymer, polybutene, 1-octene oligomer, 1-decene oligomer, etc.) and hydrides thereof, alkylbenzene, alkylnaphthalene, ester, and the like. Examples thereof include polyoxyalkylene glycols, polyphenyl ethers, dialkyl diphenyl ethers, phosphates (such as tricresyl phosphate), fluorinated compounds (such as perfluoropolyether and fluorinated polyolefin), and silicone oils.

As the base oil of the lubricant composition for drawing in the present invention, the above-described base oils may be used alone,
You may combine two or more types.

As the base oil of the lubricant composition for drawing according to the present invention, among the above, from the viewpoint of excellent drawability, an ester is used in an amount of 5% by mass or more based on the total amount of the composition.
Preferably 10% by mass or more, more preferably 20% by mass
It is desirable to include the above.

The alcohol constituting the ester may be a monohydric alcohol or a polyhydric alcohol, and the acid may be a monobasic acid or a polybasic acid. As the monohydric alcohol, it usually has 1 to 24 carbon atoms, preferably 1 to 24 carbon atoms.
12, and more preferably 1 to 8, and such alcohols may be straight-chain or branched. Specific examples of the alcohol having 1 to 24 carbon atoms include methanol, ethanol, linear or branched propanol, linear or branched butanol, linear or branched pentanol, linear or branched hexanol, and linear or branched hexanol. Chain or branched heptanol, straight or branched octanol, straight or branched nonanol, straight or branched decanol, straight or branched undecanol, straight or branched dodecanol, straight or branched tridecanol, straight Or branched tetradecanol,
Linear or branched pentadecanol, linear or branched hexadecanol, linear or branched heptadecanol, linear or branched octadecanol, linear or branched nonanol, linear or branched icosanol, Examples include straight or branched henicosanol, straight or branched tricosanol, straight or branched tetracosanol, and mixtures thereof.

The polyhydric alcohol is usually 2 to 10
Valent, preferably those having 2 to 6 valences are used. 2-10
Specific examples of the polyhydric alcohols include, for example, ethylene glycol, diethylene glycol, polyethylene glycol (3 to 15 mer of ethylene glycol), propylene glycol, dipropylene glycol, and polypropylene glycol (3 to 15 of propylene glycol).
Monomer), 1,3-propanediol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, 2-methyl-1,2-propanediol, 2-methyl-1,3 Dihydric alcohols such as propanediol, 1,2-pentanediol, 1,3-pentanediol, 1,4-pentanediol, 1,5-pentanediol and neopentyl glycol; glycerin, polyglycerin (2- to 2-glycerol); Octamers, such as diglycerin,
Triglycerin, tetraglycerin, etc.), trimethylolalkanes (trimethylolethane, trimethylolpropane, trimethylolbutane, etc.) and their 2- to 8-mers, pentaerythritol and their 2- to 2-mer
Tetramer, 1,2,4-butanetriol, 1,3,5-
Polyhydric alcohols such as pentanetriol, 1,2,6-hexanetriol, 1,2,3,4-butanetetrol, sorbitol, sorbitan, sorbitol glycerin condensate, adonitol, arabitol, xylitol, mannitol; xylose, arabinose, Sugars such as ribose, rhamnose, glucose, fructose, galactose, mannose, sorbose, cellobiose, maltose, isomaltose, trehalose, and sucrose, and mixtures thereof.

Among these, ethylene glycol, diethylene glycol, polyethylene glycol (3 to 10 mer of ethylene glycol), propylene glycol, dipropylene glycol, polypropylene glycol (3 to 10 mer of propylene glycol),
1,3-propanediol, 2-methyl-1,2-propanediol, 2-methyl-1,3-propanediol, neopentyl glycol, glycerin, diglycerin, triglycerin, trimethylolalkane (trimethylolethane, trimethylolethane) Methylolpropane, trimethylolbutane, etc.) and their dimers and tetramers, pentaerythritol, dipentaerythritol, 1,2,4-
Butanetriol, 1,3,5-pentanetriol,
1,2,6-hexanetriol, 1,2,3,4-butanetetrol, sorbitol, sorbitan, sorbitol glycerin condensate, adonitol, arabitol,
Divalent to hexavalent polyhydric alcohols such as xylitol and mannitol, and mixtures thereof are more preferred. More preferred are ethylene glycol, propylene glycol, neopentyl glycol, glycerin, trimethylolethane, trimethylolpropane, pentaerythritol, sorbitan, and mixtures thereof.

As the monobasic acid, a fatty acid having 6 to 24 carbon atoms is usually used. Such fatty acids may be straight-chain or branched, and may be saturated or unsaturated. As the fatty acid having 6 to 24 carbon atoms, specifically, for example, linear or branched hexanoic acid, linear or branched heptanoic acid, linear or branched octanoic acid, linear or Branched nonanoic acid, linear or branched decanoic acid, linear or branched undecanoic acid, linear or branched dodecanoic acid, linear or branched tridecanoic acid, linear or Branched tetradecanoic acid, linear or branched pentadecanoic acid,
Linear or branched hexadecanoic acid, linear or branched heptadecanoic acid, linear or branched octadecanoic acid, linear or branched nonadecanoic acid, linear or branched icosanoic acid, Saturated fatty acids such as linear or branched henicosanoic acid, linear or branched docosanoic acid, linear or branched tricosanoic acid, linear or branched tetracosanoic acid, or linear or branched Branched hexenoic acid, linear or branched heptenoic acid,
Linear or branched octenoic acid, linear or branched nonenic acid, linear or branched decenoic acid, linear or branched undecenoic acid, linear or branched dodecenoic acid, Linear or branched tridecenoic acid, linear or branched tetradecenoic acid, linear or branched pentadecenoic acid, linear or branched hexadecenoic acid,
Linear or branched heptadecenoic acid, linear or branched octadecenoic acid, linear or branched nonadecenoic acid, linear or branched eicosenoic acid, linear or branched heneicosenoic acid, Unsaturated fatty acids such as linear or branched docosenoic acid, linear or branched tricosenoic acid, linear or branched tetracosenoic acid, and mixtures thereof. Among these,
Particularly, a saturated fatty acid having 8 to 18 carbon atoms, or 8 to 1 carbon atoms.
8 unsaturated fatty acids, and mixtures thereof, and the like.

The polybasic acids include dibasic acids having 2 to 10 carbon atoms and trimellitic acid. 2 to 1 carbon atoms
The dibasic acid of 0 may be linear or branched, and may be saturated or unsaturated. Specifically, for example, ethanedioic acid, propanedioic acid, linear or branched butanedioic acid, linear or branched pentanedioic acid, linear or branched hexanedioic acid, linear or branched octanedioic acid, Linear or branched nonanedioic acid, linear or branched decandioic acid, linear or branched butenedioic acid, linear or branched pentenedioic acid, linear or branched hexenedioic acid, linear or branched Examples include octenedioic acid, linear or branched nonenedioic acid, linear or branched decenedioic acid, and mixtures thereof.

Further, as a combination of an alcohol and an acid, an ester of a monohydric alcohol and a monobasic acid, an ester of a polyhydric alcohol and a monobasic acid, an ester of a monohydric alcohol and a polybasic acid, a polyhydric alcohol and a polybasic Esters with acids Mixed esters of monohydric alcohols, mixtures of polyhydric alcohols and polybasic acids Mixed esters of polyhydric alcohols with monobasic acids, mixtures of polybasic acids With mixtures of monohydric alcohols, polyhydric alcohols Arbitrary combinations such as mixed esters with monobasic acids and polybasic acids are possible.

When a polyhydric alcohol is used as the alcohol component, a complete ester in which all of the hydroxyl groups in the polyhydric alcohol are esterified may be used, and a part of the hydroxyl group which is not esterified and remains as a hydroxyl group may be used. It may be an ester, but is preferably a complete ester. When a polybasic acid is used as the acid component, a complete ester in which all of the carboxyl groups in the polybasic acid are esterified may be used. It may be an ester, but is preferably a complete ester.

As the base oil of the lubricant composition for drawing according to the present invention, one or more esters selected from the above, and among them, from the viewpoint of further improving drawability, may be used. preferable. Further, among them, one or two or more esters selected from and among them are more preferable, and one or two or more esters selected from among them are still more preferable. It is most preferable to use the above.

As the lubricant composition for drawing in the present invention, the one composed of only the above-mentioned base oil may be used, or the one obtained by appropriately adding an additive to the base oil may be used. Such additives include oily agents, extreme pressure agents, corrosion inhibitors, detergents, dispersants, antioxidants, defoamers, and the like.

Examples of the oily agent include fatty acids, higher alcohols, amines and amides.

Examples of the extreme pressure agent include phosphorus compounds such as tricresyl phosphate, sulfur compounds such as sulfurized fats and oils, polysulfides and the like, chlorine compounds such as chlorinated paraffin, zinc dialkyldithiophosphate and molybdenum dialkyldithiophosphate. And organometallic compounds such as zinc dialkyldithiocarbamate and molybdenum dialkyldithiocarbamate.

Examples of the corrosion inhibitor include benzotriazole, mercaptobenzothiazole, sodium salt of mercaptobenzothiazole, and tolyltriazole.

Examples of the detergent include alkali metal or alkaline earth metal sulfonates, alkali metal or alkaline earth metal salicylates, alkali metal or alkaline earth metal phenates, and fatty acid soaps.

Examples of the dispersant include alkenyl succinimides (including those modified with boric acid) and nonionic surfactants.

The antioxidants include 2,6-di-t
Examples include phenol compounds such as tert-butyl-p-cresol (DBPC) and aromatic amines such as phenyl-α-naphthylamine.

The defoaming agent includes a silicon compound,
Higher alcohols, metal soaps, amides, ethylene-propylene copolymers and the like can be mentioned.

The content of these additives is usually 5
It is desirably not more than 1% by mass, preferably not more than 1% by mass (all based on the total amount of the lubricant composition for drawing);

In the method for producing a DI can of the present invention, the drawing is carried out by applying the above water-insoluble water-soluble lubricant composition to 50 to 600 mg /
It is performed by m ² oiled.

The gravure roll referred to in the present invention means a cylindrical steel pipe which has been subjected to copper plating and chromium plating, and the surface of which has been formed with a concave portion (cell) by electronic engraving or the like. By using a gravure roll, the amount of oil applied can be easily controlled only by changing the screen series and the size and number of cells.

In the present invention, the lubricating composition for drawing is applied to each surface of a metal plate by using the gravure roll described above.
600 mg / m ² , preferably 100 to 500 mg / m
² , more preferably 150 to 450 mg / m ² must be applied. If the amount of oil applied exceeds 600 mg / m ² , it may cause sticking of the cup, slipping of the plate, wrinkles, ears and the like, which is not preferable. Also, the amount of oil applied is 50m
If the amount is less than g / m ² , drawability deteriorates, which is not preferable.

In the present invention, other conditions for applying the water-insoluble lubricant composition to the metal plate are not particularly limited as long as the above-mentioned gravure roll is used. Oil is applied using an applicator roll, a lubricant supply device, a doctor blade, or the like. The above-mentioned applicator roll refers to a roll obtained by attaching an elastic material having a hardness of about 50 to 90 on a cylindrical steel pipe. In addition, as a material of the elastic material, a material having resistance to the above-described water-insoluble lubricant composition is preferable.

As the oiling method, specifically, for example, the method shown in FIG. 1 is preferably used. The lubricant for drawing is supplied to the gravure roll (5) by the oil pan (3). As the lubricant remains only in the gravure roll cells,
Excessive lubricant on the gravure roll surface is scraped off with a doctor blade (4). The lubricant accumulated in the cells of the gravure roll is transferred to the applicator roll (6). The lubricant is transferred from the applicator roll to each surface of the metal plate (1) fed by the metal plate feed roll (2).

In the method for producing a DI can of the present invention, the drawn product obtained by the above-described method is ironed. However, the drawn product may be ironed immediately after drawing. Alternatively, ironing may be performed after processing such as redrawing after drawing.

In the ironing process in the method for producing a DI can of the present invention, the lubricant is prepared by diluting a stock solution for ironing process containing the following components as essential components to 10 to 200 times (weight ratio) with water. This is performed using (A) Ester of trihydric alcohol and fatty acid having 18 carbon atoms (B) Monobasic and / or dibasic fatty acid having 8 to 12 carbon atoms (C) Ricinoleic acid condensate and / or 18 carbon atoms
Fatty acids of (D) monoethanolamine, diethanolamine or triethanolamine (E) monocyclohexylamine, dicyclohexylamine or tricyclohexylamine and (F) water

Specific examples of the trihydric alcohol in the above (A) include glycerin, trimethylolethane, trimethylolpropane, and trimethylolbutane. In addition, as a fatty acid having 18 carbon atoms,
Specific examples include stearic acid, oleic acid, ricinoleic acid, and the like.

The ester of the component (A) may be a complete ester in which all of the hydroxyl groups of the trihydric alcohol are esterified, or a partial ester in which a part of the hydroxyl groups are not esterified and remain as hydroxyl groups. But degreasing,
From the viewpoint of excellent detergency, a perfect ester is desirable.

The upper limit of the content of the component (A) is 20% by mass, preferably 18% by mass, based on the total amount of the stock solution for ironing, and the lower limit is the total amount of the stock solution for ironing. 10% by mass, preferably 12% by mass
It is. When the content of the component (A) is more than 20% by mass, the composition becomes an emulsion and the degreasing property and the detergency deteriorate, which is not preferable. On the other hand, when the content of the component (A) is less than 10% by mass, ironing workability is poor, which is not preferable.

The monobasic acid having 8 to 12 carbon atoms of the component (B) may be linear or branched, and may be saturated or unsaturated. 8-12 carbon atoms
Specific examples of the monobasic acid include, for example, linear or branched octanoic acid, linear or branched nonanoic acid, linear or branched decanoic acid, linear or branched undecanoic acid, linear or branched Dodecanoic acid, linear or branched octenoic acid, linear or branched nonenic acid, linear or branched decenoic acid, linear or branched undecenoic acid, linear or branched dodecenoic acid, and mixtures thereof. Can be

The dibasic acid having 8 to 12 carbon atoms of the component (B) may be linear or branched, and may be saturated or unsaturated. 8 to 1 carbon atoms
Specific examples of the 2 dibasic acids include, for example, linear or branched octane diacid, linear or branched nonanedioic acid, linear or branched decandioic acid, linear or branched undecandioic acid, Linear or branched dodecandioic acid, linear or branched octenedioic acid, linear or branched nonenedioic acid, linear or branched decenedioic acid, linear or branched undecenedioic acid, linear or branched Dodecenedioic acid and mixtures thereof.

As the component (B), a monobasic acid or a dibasic acid may be used alone, or a mixture of both may be used. However, from the viewpoint of excellent ironing workability and rust prevention,
It is desirable to use a mixture of monobasic and dibasic acids.

The upper limit of the content of the component (B) is 6% by mass, preferably 5% by mass, based on the total amount of the stock solution of the lubricant, and the lower limit is the total amount of the stock solution of the lubricant. On a basis, it is 2% by weight, preferably 2.5% by weight. When the content of the component (B) exceeds 6% by mass, no further improvement in the effect is observed, and this is not preferable in terms of cost. On the other hand, when the content of the component (B) is less than 2% by mass, the ironing processability becomes poor, the rust-preventing property is reduced, the degreasing property becomes an emulsion, and the detergency decreases. Not preferred.

The ricinoleic acid condensate of the component (C) is
It is obtained by dehydrating and condensing ricinoleic acid.
In general, the degree of condensation of the ricinoleic acid condensate is represented by an acid value. As the component used as the component (C), the acid value is usually 40 to 150 mgKOH / g, preferably 50 to 150 mgKOH / g.
It is 130 mgKOH / g. Specific examples of the fatty acid having 18 carbon atoms as the component (C) include stearic acid, oleic acid, ricinoleic acid, and mixtures thereof. As the component (C), a ricinoleic acid condensate may be used alone, or a fatty acid having 18 carbon atoms may be used alone. However, from the viewpoint of excellent ironing workability and defoaming properties, ricinoleic acid condensate and Carbon number 18
It is desirable to use a mixture of the following fatty acids.

The upper limit of the content of the component (C) is 30% by mass, and preferably 28% by mass, based on the total amount of the undiluted lubricant composition for ironing, and the lower limit is the entire amount of the undiluted lubricant composition for ironing. 15% by mass, preferably 16% by mass
It is. When the content of the component (C) exceeds 30% by mass, no further improvement in the effect is observed, which is not preferable in terms of cost. Further, the content of the component (C) is 15% by mass.
If less than the above, ironing workability is undesirably reduced.

The component (D) is monoethanolamine, diethanolamine or triethanolamine.
The upper limit of the content of the component (D) is 15% by mass, and preferably 14% by mass, based on the total amount of the undiluted lubricant composition for ironing.
And the lower limit is 10% by mass, and preferably 11% by mass, based on the total amount of the lubricant stock solution for ironing.
When the content of the component (D) exceeds 15% by mass, no further improvement in the effect is observed, which is not preferable in terms of cost. On the other hand, when the content of the component (D) is less than 10% by mass, the stability when diluted with water is reduced, resulting in an emulsion, and the degreasing and washing properties are undesirably reduced.

The component (E) is monohexylamine, dicyclohexylamine or tricyclohexylamine. The upper limit of the content of the component (E) is 10% by mass, and preferably 9% by mass, based on the total amount of the lubricant stock solution for ironing, and the lower limit is based on the total amount of the lubricant stock solution for ironing, It is 5% by mass, preferably 6% by mass.
When the content of the component (E) exceeds 10% by mass, the composition becomes an emulsified liquid, and the degreasing property and the detergency deteriorate, which is not preferable. When the content of the component (E) is less than 5% by mass,
Stability when diluted with water decreases, it becomes an emulsion,
The degreasing and cleaning properties are lowered, and the rot resistance is poor, which is not preferable.

As the component (F) water, tap water, industrial water, ion-exchanged water, distilled water and the like can be used, and the water may be hard water or soft water.
The upper limit of the content of the component (F) is 58% by mass, and preferably 40% by mass, based on the total amount of the undiluted lubricant composition for ironing.
And the lower limit is 3% by mass, preferably 10% by mass, based on the total amount of the undiluted lubricant composition for ironing. (F)
When the content of the component is more than 58% by mass, the amount of the active component is decreased (use of a high concentration), the handling becomes complicated, and the amount of one replenishment increases, which is not preferable. When the content of the component (F) is less than 3% by mass,
It becomes viscous and difficult to handle, which is not preferable.

As a lubricant used for ironing in the method for producing a DI can of the present invention, if a stock solution having the above composition is diluted with water, dispersibility of abrasion powder, filterability, corrosion prevention, Ironing processability, degreasing, cleaning, liquid stability,
A product excellent in defoaming property, abrasion resistance and the like can be obtained, and if necessary, a known additive can be added to the above-mentioned stock solution composition. Such additives include:
Specifically, for example, rust inhibitors such as sulfonates, phosphoric acids and phosphates, and boron compounds; phenol-based, amine-based, sulfur-based, phosphorus-based, and chlorine-based antioxidants; nitrogen compounds such as benzotriazole; Corrosion inhibitors such as compounds containing sulfur and nitrogen; preservatives such as phenolic, formaldehyde donor compounds and salicylanilide compounds; antifoaming agents such as silicone oil; oily agents such as fatty acids, esters and alcohols; sulfuric acid and sulfone Examples thereof include an anionic surfactant such as an acid ester and a nonionic surfactant such as a polyoxyethylene compound, and these can be added alone or in combination of two or more. The content of each of these additives is usually 5% by mass or less, preferably 1% by mass or less (all based on the total amount of the lubricant stock solution for ironing; total amount).

The ironing process of the manufacturing method of the DI can of the present invention is as follows.
The ironing stock solution for ironing having the above-mentioned composition is 10 to 200 times (weight ratio) with water, preferably 20 to 20 times.
This is performed using a lubricant diluted 100 times (weight ratio). As the water used as the diluent, any water can be used, and specific examples thereof include those listed as the water of the above-mentioned component (F).

The ironing lubricant used in the present invention can be obtained by further diluting the above-described ironing lubricant stock solution with water. However, the ironing lubricant is based on water, (A)
If the components (B), (C), (D), and (E) and other additives are contained in predetermined amounts and ratios as required, they act as an ironing lubricant. Therefore, the ironing lubricant used in the present invention is stored in a state of more water than the ironing lubricant stock solution composition,
It can be obtained by appropriately diluting this with water at the time of use to prepare a predetermined composition.

[0058]

EXAMPLES Hereinafter, the content of the present invention will be described more specifically with reference to Examples and Comparative Examples, but the present invention is not limited to these. The drawing-forming lubricant composition according to the present invention and the drawing-forming lubricant composition for comparison used in the examples are shown below.

Draw-forming lubricant Sample 1: paraffinic mineral oil, @ 40 ° C., 2 mm ² / s Sample 2: paraffinic mineral oil, @ 40 ° C., 6 mm ² / s Sample 3: paraffinic mineral oil, @ 40 ° C., 23 mm ² / s
s Sample 4: paraffinic mineral oil, @ 40 ° C 76 mm ² /
s Sample 5: neopentyl glycoldiolate, $ 40
℃ 21mm ² / s sample 6: pentaerythritol tetra oleate, @ 4
0 ° C. 64 mm ² / s Sample 7: A mixture of 1 and 5 (90:10, weight ratio), Δ
40 ° C. 2.3 mm ² / s Sample 8: mixture of 2 and 5 (90:10, weight ratio), Δ
40 ° C. 6.7 mm ² / s Sample 9: mixture of 3 and 5 (90:10, weight ratio), Δ
40 ° C. 22.8 mm ² / s Mixture of samples 10: 3 and 6 (45:55, weight ratio), Δ
40 ° C. 39.1 mm ² / s Mixture of samples 11: 4 and 6 (90:10, weight ratio), Δ
40 ° C. 74.7 mm ² / s Mixture of samples 12: 5 and 6 (60:40, weight ratio), Δ
40 ° C 32.0mm ² / s

Further, according to the compositions shown in Table 1, the stock solution of the lubricant for ironing according to the present invention (sample 13) and the stock solution of the lubricant for ironing for comparison (sample 14)
Was prepared.

[0061]

[Table 1]

Example 1 The draw forming lubricant composition (sample 2) and the ironing stock solution composition (sample 13) were used in combination as shown in Table 2, and the inner volume was determined by the method shown below. A 350 ml DI can was produced.

Method for Producing DI Can A lubricant composition for drawing was supplied to a gravure roll by an oil pan. Excessive lubricant composition on the gravure roll surface was scraped off with a doctor blade so that the lubricant composition remained only in the cells of the gravure roll. The lubricant composition accumulated in the cells of the gravure roll was transferred to an applicator roll. From applicator roll to aluminum alloy plate (JI
SH 4000 3004-H19), the lubricant composition was transferred to each surface. Table 2 shows the amount of oil applied at this time. The aluminum alloy plate obtained in the above was cut out into a disk shape having a diameter of 160 mm by a cupping press (drawing forming machine), and then immediately drawn into a cup-shaped material having a diameter of 90 mm. Is transferred to a body maker (can body manufacturing machine), and subjected to re-drawing so as to have a shape of 66 mm in diameter. Then, the lubricant stock solution for ironing is 30 times with water ( (Weight ratio) using a lubricant diluted to 66
Ironing processing was performed so as to obtain a shape having a height of 130 mm and a height of 130 mm.

Examples 2 to 6 The draw-forming lubricant composition and the ironing stock solution composition were used in combinations shown in Table 2 in the same manner as in Example 1 to obtain an inner volume of 35%.
A 0 ml DI can was made.

(Comparative Examples 1 to 5) The above-described draw forming lubricant composition and ironing lubricant stock solution composition were used in combinations shown in Table 2, and the internal volume was 35 in the same manner as in Example 1.
A 0 ml DI can was made.

(Comparative Example 6) Instead of using a gravure roll as described above, a conventional lubricant roll was used to apply a draw forming lubricant (sample 9) to an aluminum alloy plate. Then, a DI can having an internal volume of 350 ml was produced in the same manner as in Example 1 by using the lubricant stock solution for ironing (sample 13) in combination.

The DI can obtained by the above method was evaluated by the following method. Table 2 shows the results. The appearance of the cup-shaped material obtained by drawing was visually observed. The evaluation was performed by the following method. ○: No wrinkles occurred ×: Wrinkles occurred

Ironing workability The presence or absence of breakage during ironing and the appearance of the opening and wall of the DI can obtained were visually observed. The evaluation was performed by the following method. Presence / absence of fracture Out of the 10 cans produced, those with fracture were evaluated as x, and those without fracture were evaluated as ○.

The opening was evaluated on a 6-point scale, with 5 indicating no bleed-through and 0 indicating that bleed-through occurred over the entire opening, and taking the average value of the 10 cans produced.

[0099] Walls without scratches were marked with “○”, and those with scratches were marked with “×”.

The DI can obtained by the cleaning property was spray-cleaned using a cleaning solution in which the concentration of the surfactant in the degreasing agent was variously changed, and the presence or absence of water repelling on the surface of the DI can after washing with water was determined. did. It is said that if the concentration of the surfactant is lower than the required amount, the lubricant remains on the DI can surface and repels water, and in this case, it affects the subsequent chemical conversion step. That is, the lower the surfactant concentration at which water repelling occurs, the better the detergency and detergency. In this evaluation method, a sulfuric acid-iron sulfate based degreasing agent generally used in a degreasing step of a DI can was used as a cleaning liquid. The evaluation was performed in the following three stages. When the surfactant concentration of the conventional degreasing agent is set to 100, ：: water repelling occurs at 0 to 33. Δ: Water repelling occurred at 34 to 66. X: Water repelling occurred at 67 to 99.

[0072]

[Table 2]

As is clear from the results in Table 2, the DI can produced by the production method according to the present invention has drawability,
Excellent ironing and cleaning properties. In particular, in Examples 3, 4, 5, and 6, in which an ester was used as the base oil of the lubricant composition for drawing, it was found that occurrence of bleed-through at the opening after ironing was particularly small. In contrast, when a draw-forming lubricant composition having a lower viscosity than specified in the present invention was used (Comparative Examples 1 and 3),
It can be seen that breakage occurs when ironing is performed, bleed-through frequently occurs in the opening, and scratches also occur on the wall surface. Further, when a draw-forming lubricant composition having a higher viscosity than specified in the present invention is used (Comparative Examples 2 and 4), wrinkles are generated at the time of draw-forming, and bleed-through often occurs in the openings. It can be seen that the wall is also scratched. In addition, when the ironing stock lubricant composition having a higher content of the component (A) than specified in the present invention was used after being diluted with water (Comparative Example 5), it was found that the detergency was poor. . Furthermore, when the lubricating composition for drawing was applied to a metal plate using a conventional rubber roll (Comparative Example 6), the amount of oil applied increased, wrinkles occurred during drawing, and ironing was performed. It can be seen that rupture occurs at the opening, bleed-through occurs frequently in the opening, the wall surface is scratched, and the cleaning property is poor.

[0074]

The method for producing a DI can of the present invention is excellent in draw formability, ironing workability, and cleanability. When an ester is used as the base oil of the lubricant composition for drawing, the occurrence of bleed-through at the opening after ironing is particularly low.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a lubricant coating device using a gravure roll.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Metal plate 2 Metal plate delivery roll 3 Oil pan 4 Doctor blade 5 Gravure roll 6 Applicator roll

──────────────────────────────────────────────────の Continuation of the front page (51) Int.Cl. ⁶ Identification code FI C10M 105: 32 133: 06 133: 08) C10N 40:24 (72) Inventor Akira Kuboshima 5-5-Nishihashimoto, Nishihashimoto, Sagamihara City, Kanagawa Prefecture. No. 1 Daiwa Seikan Co., Ltd. (72) Inventor Kazuhiro Tsujimoto 5-5-1 Nishihashimoto, Sagamihara City, Kanagawa Prefecture Daiwa Seikan Co., Ltd. Technology Development Center (72) Inventor Hideo Yokota Yokohama, Kanagawa 8 Chidori-cho, Naka-ku, Nippon Oil Co., Ltd. (72) Inventor Kazuhiko Endo 8 Chidori-cho, Naka-ku, Yokohama-ku, Yokohama-shi, Kanagawa Prefecture Japan Petroleum Co., Ltd. (72) Inventor Okazu Kazuka Yokohama, Kanagawa Prefecture 8 Chidori-cho, Naka-ku, Japan Nippon Oil Co., Ltd. Central Research Laboratory Co., Ltd. (72) Inventor Ryo Kanai Japan Petroleum Association, 1-3-12 Nishishinbashi, Minato-ku, Tokyo The inner

Claims (1)

[Claims] A kinematic viscosity at 40 ° C. of 5 to 50 mm ^2.
/ S of a lubricating composition for water-insoluble drawing is applied to each surface of a metal plate with a gravure roll at 50 to 600 mg / m ² and drawn, and then the drawn product is subjected to the total amount of the composition. On the basis, (A) an ester of a trihydric alcohol and a fatty acid having 18 carbon atoms, 10 to 20% by mass, (B) a monobasic and / or dibasic fatty acid having 8 to 12 carbon atoms, 2 to 6% by mass, C) ricinoleic acid condensate and / or fatty acid having 18 carbon atoms, 15 to 30% by mass, (D) monoethanolamine, diethanolamine or triethanolamine, 10 to 15% by mass, (E) monocyclohexylamine, dicyclohexylamine or An ironing lubricant stock solution containing tricyclohexylamine, 5 to 10% by mass, and (F) water, 3 to 58% by mass as essential components, A method for producing a DI can, comprising ironing using a lubricant diluted to 0 to 200 times (weight ratio).