JP2014133813A - Lubricant for belt-like dry wire drawing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lubricant for belt-like dry wire drawing capable of being used under severe processing conditions of wire drawing such as high temperature, high pressure, high speed and the like same as conventional powder-like or granular lubricants for dry wire drawing, corresponding to diameter reduction to a wide range of wire diameter from small diameter to large diameter and a wide range of wire speed from low speed to high speed, not being limited by processed shapes, excellent in functionality such as lubricity, followability, spreadability, adhesive property, heat resistance, processability, workability, safety, durability and productivity, especially suitable for a drawing process using a cassette roller die, being innovative with consideration of improvement of working environment and environment protection without generating dust.SOLUTION: A lubricant for belt-like dry wire drawing has a film containing 10 to 90 pts.wt. of metal salt of saturated aliphatic acid and/or carboxylic acid-based amide wax, 10 to 50 pts.wt. of an additive agent containing an inorganic product and/or a heat resistant resin and 10 to 90 pts.wt. of a thermoplastic resin.

Description

  The present invention is used to prevent a seizure due to direct contact between the base material and the die and maintain a stable processing state when a base material such as a wire or a rod is drawn and diameter-reduced and drawn. The present invention relates to a belt-like dry wire drawing lubricant.

  During wire drawing work, metal bases such as steel and non-ferrous metals, such as large-diameter wires and rods, are drawn using a die and reduced in diameter to thin-diameter wires and rods for plastic deformation. Powdered dry wire drawing lubricants are widely used. This dry wire drawing lubricant is used to prevent the base material and the die from being in direct contact and seizure, to be slippery and to maintain a stable processed state.

  For example, Patent Document 1 discloses a boric acid-free dry wire drawing lubricant containing a metal salt of a saturated fatty acid, a boron-free water-soluble inorganic condensation compound and / or a condensation precursor compound thereof. Has been. Such a dry drawing lubricant composed of a metal salt of a saturated fatty acid, an inorganic substance, and an additive has a powdery or granular shape. This powder or granular dry wire drawing lubricant can be used under severe wire drawing conditions such as high temperature, high pressure, and high speed, and the wire diameter can be reduced from a small diameter to a large diameter. It is widely used because it can handle diameters and linear speeds from low to high.

  A powder or granular dry wire drawing lubricant is drawn into a die together with the workpiece base material at the time of wire drawing to form a lubricating film on the workpiece base material. Prevent direct contact with. For example, in a drawing process using a hole die, a large amount of dry drawing lubricant is put into a die box, and about 20% of the lubricant is drawn together with the workpiece base material to be used as a lubricant film and consumed. The remainder is because the dry-drawing lubricant is partially decomposed to become carbides, and the lubrication ability is reduced, and wear powder such as the base material to be processed or hole dies is mixed. It cannot be used to ensure quality. Therefore, the entire remaining amount is unavoidably discarded.

  Compared to the drawing process using this hole die, in the drawing process using a cassette roller die (CRD) that combines a plurality of rollers having a special groove shape, the amount of dry drawing lubricant used is relatively low. Can be done in small quantities. This CRD is characterized by the fact that drawing resistance is unlikely to occur, so that processing heat does not easily occur, high-speed wire drawing is possible, and the die life is long. However, in the same way as the drawing process using a hole die, dust is generated by the dry drawing lubricant that is in the form of powder or granules, and the dust rises further, resulting in a worse working environment and work. The problem of causing health damage to the elderly has arisen.

  In addition, as a problem peculiar to the shape of powdered dry wire drawing lubricants, it is necessary to properly use and adjust the particle shape of dry wire drawing lubricants depending on the processing shape, which is inefficient for workers and producers. Met. In view of these problems, an innovative dry-drawing lubricant that is not powdered or oily has been demanded in consideration of improving the working environment while maintaining workability and productivity.

JP 2010-1111767 A

  The present invention has been made to solve the above-mentioned problems, and is used under severe wire drawing conditions such as high temperature, high pressure, and high speed in the same manner as conventional powder or granular dry wire drawing lubricants. It is possible to reduce the diameter of the wire from a small diameter to a large diameter, and also supports a wide range of wire speeds from low speed to high speed. Excellent in functionality such as spreadability, adhesion, heat resistance, workability, workability, safety, durability, and productivity, especially suitable for drawing processing using CRD, considering work environment improvement and environmental conservation It is an object of the present invention to provide a belt-type dry wire drawing lubricant that is innovative and does not generate dust, a manufacturing method thereof, and a wire drawing method using the same.

  The belt-type dry wire drawing lubricant according to claim 1, which has been made to achieve the above object, comprises 10 to 90 weights of a saturated fatty acid metal salt and / or carboxylic acid amide wax. And a film containing 10 to 50 parts by weight of an additive containing an inorganic substance and / or a heat-resistant resin, and 10 to 90 parts by weight of a thermoplastic resin.

  The lubricant for strip-type wire drawing according to claim 2 is the lubricant according to claim 1, wherein the saturated fatty acid forming the metal salt of the saturated fatty acid and / or the carboxylic acid amide wax is butyric acid. , Caproic acid, caprylic acid, pelargonic acid, capric acid, undecanoic acid, lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, lignoceric acid, serotic acid, montanic acid, and / or melicic acid It is characterized by that.

  The belt-like dry wire drawing lubricant according to claim 3 is the lubricant according to claim 1 or 2, wherein the metal salt is a lithium salt, sodium salt, potassium salt, calcium salt, magnesium salt, aluminum. It is characterized by being a salt, zinc salt, barium salt, and / or a composite metal salt thereof.

  The belt-shaped dry wire drawing lubricant according to claim 4 is the lubricant according to any one of claims 1 to 3, wherein the polybasic acid forming the carboxylic acid amide wax is malonic acid or succinic acid. It is characterized by being an acid, adipic acid, sebacic acid, pimelic acid, azelaic acid, phthalic acid, terephthalic acid, cyclohexanedicarboxylic acid, and / or cyclohexylsuccinic acid.

  The belt-shaped dry wire drawing lubricant according to claim 5 is the lubricant according to any one of claims 1 to 4, wherein the amine that forms the carboxylic acid amide wax is ethylamine, monoethanolamine, Propylamine, butylamine, pentylamine, hexylamine, octylamine, decylamine, laurylamine, myristylamine, cetylamine, stearylamine, behenylamine, ethylenediamine, 1,4-diaminobutane, hexamethylenediamine, metaxylylenediamine, 1, It is characterized by being 10-decamethylenediamine, 1,11-undecamethylenediamine, and / or 1,12-dodecamethylenediamine.

  The belt-shaped dry wire drawing lubricant according to claim 6 is the lubricant according to any one of claims 1 to 5, wherein the inorganic substance is boric acid, borate, phosphate, sulfate, Carbonate, nitrate, slaked lime, titanium oxide, talc, mica, graphite, molybdenum disulfide, layered double hydroxide, and / or sulfur, and the heat-resistant resin is melamine cyanurate resin and / or polytetrafluoroethylene It is a resin.

  The belt-shaped dry wire drawing lubricant according to claim 7 is the lubricant according to any one of claims 1 to 6, wherein the thermoplastic resin is polyethylene, polypropylene, polystyrene, acrylonitrile / styrene copolymer resin. , Acrylonitrile-butadiene-styrene copolymer resin, ethylene-vinyl acetate copolymer resin, methacrylic resin, vinyl chloride, polyamide, polyacetal, polyethylene terephthalate, polybutylene terephthalate, methylpentene, polycarbonate, polyphenylene sulfide, polyetheretherketone, tetrafluoro Ethylene / perfluoroethylene copolymer resin, tetrafluoroethylene / hexafluoropropylene copolymer resin, polyetherimide, polychlorotrifluoroethylene, ethylene / tetrafluoroethylene Polymeric resin, polyarylate, polysulfone, characterized in that it is a polyether sulfone, and / or polyamideimide.

  The band-shaped dry wire drawing lubricant according to claim 8 is the lubricant according to any one of claims 1 to 7, wherein the cassette is drawn together with the base material to be drawn while being passed through a die. It is for roller dies.

  The method for producing a strip-type dry wire drawing lubricant according to claim 9 comprises 10 to 90 parts by weight of a saturated fatty acid metal salt and / or carboxylic acid amide wax, and an additive containing an inorganic substance and / or a heat-resistant resin. 10 to 50 parts by weight and 10 to 90 parts by weight of a thermoplastic resin, heat-kneaded to form a film, or 10 to 90 parts by weight of a saturated fatty acid metal salt and / or carboxylic acid amide wax, A film is formed by laminating 10 to 50 parts by weight of an additive containing an inorganic substance and / or a heat-resistant resin with 10 to 90 parts by weight of a thermoplastic resin, and forming it into a strip shape.

  In the wire drawing method according to claim 10, the base material to be drawn is coated with the belt-like dry wire drawing lubricant according to any one of claims 1 to 8, and the base material is diced. The diameter is reduced by drawing through the wire and drawn.

  The wire drawing method according to an eleventh aspect is the one according to the tenth aspect, wherein the base material is made of metal.

  The wire drawing method according to claim 12 is the wire drawing method according to claim 10, wherein the die is a cassette roller die.

  The belt-shaped dry wire drawing lubricant of the present invention is drawn into a die together with a base material to be processed such as wire drawing, and is not limited to the processed shape, and forms a lubricant film on the base material. Seizure due to direct contact between the material and the die can be prevented, and a stable processing state can be maintained. In addition, it can be used under severe conditions such as high temperature, high pressure, and high speed in wire drawing conditions, and it can be reduced to a wide range of wire diameters from small diameter to large diameter, and wide from low speed to high speed. It can also cope with linear speed.

  In addition, since the shape of the belt-shaped dry wire drawing lubricant is a belt-like shape, the lubricity, followability, spreadability, adhesion, It exhibits excellent functional effects such as heat resistance, workability, and durability, and can be used up. In addition, when several steps of wire diameter reduction are usually required for the wire rod as a base material, a dry wire drawing lubricant is required for each step. It is possible to form a sufficient lubricating film on the surface of the wire and maintain the effect only by using it only or during interruption, so that the production efficiency and cost effectiveness can be improved.

  The belt-like dry wire drawing lubricant of the present invention is not in the form of powder or granules like the conventional dry wire drawing lubricant, but in the form of a belt, does not generate dust, deteriorates the working environment, and the worker It can be used safely without causing health damage or environmental pollution, and it is environmentally friendly. In particular, it can be suitably used in the drawing process using CRD.

  According to the manufacturing method of the belt-like dry wire drawing lubricant of the present invention, excellent functional effects such as lubricity, followability, spreadability, adhesion, heat resistance, workability, and durability can be exhibited. A film-like strip-shaped dry wire drawing lubricant can be produced easily and efficiently.

  According to the wire drawing method of the present invention, it is possible to reliably plastically deform the workpiece base material to be drawn by reducing the diameter by using the belt-like dry wire drawing lubricant, and again, the belt-like dry wire drawing lubricant. Even if it does not attach | subject, it can reduce a diameter repeatedly and is efficient.

  Hereinafter, although the form for implementing this invention is demonstrated in detail, the scope of the present invention is not limited to these forms.

  The belt-shaped dry wire drawing lubricant of the present invention comprises 10 to 90 parts by weight of a saturated fatty acid metal salt and / or carboxylic acid amide wax, and 10 to 50 parts by weight of an additive containing an inorganic substance and / or a heat-resistant resin. A film containing 10 to 90 parts by weight of a thermoplastic resin is formed in a band shape.

  The saturated fatty acid that forms the metal salt of the saturated fatty acid is a C3-C29 linear, branched, or cyclic saturated fatty acid. Specifically, butyric acid, caproic acid, caprylic acid, pelargonic acid, capric acid, undecanoic acid, lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, lignoceric acid, serotic acid, montanic acid, melicic acid Is mentioned. Of these, myristic acid, palmitic acid, and stearic acid, which are easily available industrially, are preferable.

  Examples of the metal salt forming the metal salt of the saturated fatty acid include lithium salt, sodium salt, potassium salt, calcium salt, magnesium salt, aluminum salt, zinc salt, barium salt, and / or a composite metal salt thereof. . Of these, lithium salts, sodium salts, potassium salts, calcium salts, magnesium salts, aluminum salts, and barium salts are preferable. The sodium salt is water-soluble and can be suitably used under the processing conditions of the base material for plating that requires a step of washing with water in the surface treatment of the base material. On the other hand, the calcium salt is water-insoluble and can be suitably used in the processing conditions of the base material that does not require a plating treatment or a water washing step. Also, from the viewpoint of improving the heat resistance of the belt-shaped dry wire drawing lubricant, lithium salt and potassium salt are preferable, and the adhesion to the wire that makes it easy to form a uniform film on the surface of the wire when drawn into a die is improved. From the point of view, a magnesium salt or an aluminum salt is preferable. Furthermore, the barium salt can be used together with the calcium salt to improve the heat resistance against the calcium salt.

  These metal salts of saturated fatty acids may be used alone or in combination of two or more.

  The metal salt of saturated fatty acid is contained in the belt-shaped dry wire drawing lubricant in an amount of 10 to 90 parts by weight, preferably 50 parts by weight, and more preferably 30 parts by weight. If the content of the metal salt of saturated fatty acid is less than 10 parts by weight or more than 90 parts by weight, effects such as heat resistance, lubricity, or difficulty in forming a strip may be reduced.

  Carboxylic acid amide waxes are obtained by reacting saturated fatty acids and / or polybasic acids with amines and / or amine salts.

  The saturated fatty acid that forms the carboxylic acid amide wax is a linear, branched, or cyclic saturated fatty acid having 3 to 29 carbon atoms. Specifically, butyric acid, caproic acid, caprylic acid, pelargonic acid, capric acid, undecanoic acid, lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, lignoceric acid, serotic acid, montanic acid, melicic acid Is mentioned. Of these, myristic acid, palmitic acid, and stearic acid, which are easily available industrially, are preferable.

  The polybasic acid that forms the carboxylic acid amide wax is a dibasic acid or higher carboxylic acid. Specifically, aliphatic dicarboxylic acids such as malonic acid, succinic acid, adipic acid, sebacic acid, pimelic acid and azelaic acid; aromatic dicarboxylic acids such as phthalic acid and terephthalic acid; fats such as cyclohexanedicarboxylic acid and cyclohexylsuccinic acid And cyclic dicarboxylic acids.

  Examples of amines and salts thereof that form carboxylic acid amide waxes include monoethanolamine, propylamine, butylamine, pentylamine, hexylamine, octylamine, decylamine, laurylamine, myristylamine, cetylamine, stearylamine, and behenylamine. Monoamines such as ethylenediamine, 1,4-diaminobutane, hexamethylenediamine, metaxylylenediamine, 1,10-decamethylenediamine, 1,11-undecamethylenediamine, 1,12-dodecamethylenediamine, and the like; Mention may be made of salts such as their hydrochlorides.

  Carboxylic acid amide waxes obtained from these may be used alone or in combination of two or more.

  Carboxylic acid amide wax is contained in the belt-shaped dry wire drawing lubricant in an amount of 10 to 90 parts by weight, preferably 50 parts by weight, and more preferably 20 parts by weight. When the content of the carboxylic acid amide wax is less than 10 parts by weight or more than 90 parts by weight, effects such as heat resistance, lubricity, or difficulty in forming a strip may be lowered.

  The additive contains an inorganic substance and / or a heat resistant resin. Examples of inorganic substances contained in the additive include boric acid, borate, phosphate, sulfate, carbonate, nitrate, slaked lime, titanium oxide, talc, mica, graphite, molybdenum disulfide, layered double hydroxide , Sulfur. Examples of the heat resistant resin contained in the additive include melamine cyanurate resin and polytetrafluoroethylene. These additives may be used alone or in combination of two or more.

  The additive is in a range that does not impair the effect of the belt-like dry wire drawing lubricant, and is contained in the belt-like dry wire drawing lubricant in an amount of 10 to 50 parts by weight, preferably 20 parts by weight, and 30 parts by weight. Part is more preferable.

  These additives can improve the functionality of the belt-like dry wire drawing lubricant in combination with a metal salt of a saturated fatty acid and / or a carboxylic acid amide wax or a thermoplastic resin. In particular, as a preferred combination of a saturated fatty acid metal salt and an inorganic substance, for example, when the saturated fatty acid metal salt is a sodium salt of a saturated fatty acid, it is preferable to contain boric acid which is a water-soluble inorganic substance. When is a calcium salt of a saturated fatty acid, it is preferable to contain slaked lime which is a water-insoluble inorganic substance.

  Examples of the thermoplastic resin include polyethylene, polypropylene, polystyrene, acrylonitrile / styrene copolymer resin, acrylonitrile / butadiene / styrene copolymer resin, ethylene / vinyl acetate copolymer resin, methacrylic resin, vinyl chloride, polyamide, polyacetal, polyethylene terephthalate. , Polybutylene terephthalate, methyl pentene, polycarbonate, polyphenylene sulfide, polyether ether ketone, tetrafluoroethylene / perfluoroethylene copolymer resin, tetrafluoroethylene / hexafluoropropylene copolymer resin, polyetherimide, polychlorotrifluoroethylene, Ethylene / tetrafluoroethylene copolymer resin, polyarylate, polysulfone, polyethersulfone, polyamid Imide. These thermoplastic resins may be used alone or in combination of two or more. Of these, polyethersulfone having excellent thermal stability is preferable, and a belt-like dry wire drawing lubricant having excellent heat resistance can be provided.

  The thermoplastic resin is contained in the belt-shaped dry wire drawing lubricant in an amount of 10 to 90 parts by weight, preferably 30 parts by weight, and more preferably 50 parts by weight. When the content of the thermoplastic resin is less than 10 parts by weight or more than 90 parts by weight, effects such as heat resistance, lubricity, difficulty in forming a belt-like shape, and difficulty in forming a film on the wire are reduced. There is a case.

  The belt-shaped dry wire drawing lubricant of the present invention is produced as follows.

  10 to 90 parts by weight of a saturated fatty acid metal salt and / or carboxylic acid amide wax obtained by reacting a compound having a metal constituting a metal salt of a saturated fatty acid with a saturated fatty acid heated and melted, and an additive 10 50 parts by weight and 10 to 90 parts by weight of a thermoplastic resin are mixed and heat-kneaded using a heat kneader. The solid obtained after uniformly kneading is pressed using a continuous roll type stretching machine, roll press or heating type press, formed into a sheet, film, or film, and finished through a sheet cutter into a strip shape. Thus, a belt-like dry wire drawing lubricant is obtained.

  As another method, a saturated fatty acid metal salt and / or carboxylic acid amide wax 10 to 90 obtained by reacting a saturated fatty acid heated and melted with a compound having a metal constituting the metal salt of the saturated fatty acid. By laminating with 10 to 90 parts by weight of a thermoplastic resin by pressing a part by weight and 10 to 50 parts by weight of an additive using a continuous roll stretching machine, a heated roll press or a heating press. A belt-like dry wire drawing lubricant is obtained by forming a strip shape, a laminate film shape, or a multilayer film shape, and finishing it in a strip shape through a sheet cutter.

  The metal salt of the saturated fatty acid may be previously mixed with an inorganic substance or an additive as necessary. The metal salt of saturated fatty acid can be used in the form of powder, granule, lump, or solid.

  The belt-shaped dry wire drawing lubricant may be a single layer film or a multilayer film. The layer structure of the multilayer film is not particularly limited. For example, a two-layer structure in which a lubricating component is coated on a base film, a layer composed of a lubricating component rich in a metal salt of a saturated fatty acid, and a lubricating component rich in inorganic matter. And a three-layer structure in which these two layers are laminated on a base film layer.

  The obtained belt-like dry wire drawing lubricant is not particularly limited in its width, thickness, and length, and is appropriately selected depending on the base material and wire drawing conditions. The sheet may be wound into a sheet roll and used as it is as a band, or may be cut into a tape roll that has been appropriately cut and wound into a band.

  The width of the belt-shaped dry wire drawing lubricant is appropriately adjusted according to the shape, diameter, length, and material of the base material in the wire drawing process, and is not particularly limited, but is a width capable of forming a lubricant film on the surface of the base material. However, it is preferable that the diameter is comparable to the diameter of the base material.

  The thickness of the strip-shaped dry wire drawing lubricant is appropriately adjusted according to the shape, diameter, length, and material of the base metal in the wire drawing process, and is not particularly limited. If it is too thick or the film width is too large, it may not be drawn into the die together with the base material. The thickness of the belt-like dry wire drawing lubricant is preferably 0.1 mm or less.

  The obtained belt-shaped dry wire drawing lubricant is used while being drawn through a die together with a base material to be drawn. As a method of wire drawing, for example, a belt-like dry wire drawing lubricant is installed in accordance with the drawing position of the die together with the base wire, and the wire is drawn into the die while being wound around the wire at the same time. Be turned. By pulling out from the die, the wire becomes the desired wire that has been plastically deformed and drawn, and the strip-like dry wire drawing lubricant drawn into the die together with the wire forms a lubricating film on the surface of the wire by crimping and heat-sealing. To do.

  The belt-shaped dry wire drawing lubricant may be used by being previously spirally wound around the wire, or may be used by sandwiching the wire vertically or horizontally, or may be used by being wrapped. Therefore, the shape of the belt-like dry wire drawing lubricant is not limited to being flat or smooth as long as it is a belt-like film, and may have swell, twist, twist, and warp.

  Drawing conditions are not particularly limited, and can be used under the same conditions as conventional dry drawing lubricants.

  Examples of the die include a hole die and a cassette roller die.

  The base material is not particularly limited as long as it is made of a metal such as steel, and specific examples include a wire, a wire, a tube, a rod, and a rod.

  The base material may be pretreated as necessary. Specific examples of the pretreatment include surface treatments such as acid treatment, bending, shot blasting, and air blasting.

  Examples of the present invention will be described in detail below, but the scope of the present invention is not limited to these examples.

  Example 1 and Example 2 in which a belt-like dry wire drawing lubricant to which the present invention is applied was made as a prototype, and powdery dry wire drawing lubricants that were not applied to the present invention were compared in Comparative Example 1 and Comparative Example 2. Comparative examples 3 show the belt-like polyethylenes to which the present invention is not applied.

Example 1
In a reaction vessel equipped with a stirrer, 75 parts by weight of industrial stearic acid was heated and melted while stirring, and then 25 parts by weight of slaked lime was added. Heating and stirring were continued until the mixture became viscous. When the mixture became hard, the heating and stirring were stopped, taken out, cooled, and pulverized with a 500 mesh sieve so that the passing rate was about 60% to obtain a calcium-based dry wire drawing lubricant which is a metal salt of a saturated fatty acid. . 180 parts by weight of a metal salt of the obtained saturated fatty acid, 20 parts by weight of slaked lime, and 50 parts by weight of polyethylene as a thermoplastic resin were heated using a heating kneader (trade name: Labo Plast Mill, manufactured by Toyo Seiki Seisakusho Co., Ltd.). Heat kneading was performed at 0 ° C. After forming the obtained solid into a sheet shape so as to have a film thickness of 0.1 mm or less with a heating press, the sheet is cut into a strip shape having a width of 17 mm using a sheet cutter, Obtained.

(Example 2)
In a reaction vessel equipped with a stirrer, 20 parts by weight of ethylenebisstearic acid amide (trade name: Koshin U-100, manufactured by Kyoeisha Chemical Co., Ltd.), 30 parts by weight of calcium carbonate, and 50 parts by weight of polyethylene as a thermoplastic resin Was kneaded at 180 ° C. using a heat kneader (trade name: Labo Plast Mill, manufactured by Toyo Seiki Seisakusho Co., Ltd.). After forming the obtained solid into a sheet shape so as to have a film thickness of 0.1 mm or less with a heating press, the sheet is cut into a strip shape having a width of 17 mm using a sheet cutter, Obtained.

(Comparative Example 1)
In a reaction vessel equipped with a stirrer, 75 parts by weight of industrial stearic acid was heated and melted while stirring, and then 25 parts by weight of slaked lime was added. Heating and stirring were continued until the mixture became viscous. When the mixture became hard, heating and stirring were stopped, taken out, cooled, and pulverized with a 500 mesh sieve so that the passing rate was about 60% to obtain a calcium-based dry wire drawing lubricant.

(Comparative Example 2)
80 parts by weight of calcium carbonate and 20 parts by weight of ethylene bis-stearic acid amide (Kyoeisha Chemical Co., Ltd., trade name: Koshin U-100) are mixed, and in the same manner as in Comparative Example 1, for powdery calcium-based dry wire drawing A lubricant was obtained.

(Comparative Example 3)
Polyethylene was heat-kneaded at 180 ° C. using a heat kneader (trade name: Labo Plast Mill, manufactured by Toyo Seiki Seisakusho Co., Ltd.). The obtained solid was formed into a sheet shape with a heating press so as to have a film thickness of 0.1 mm or less, and then cut into a strip shape having a width of 17 mm using a sheet cutter to obtain a strip-like polyethylene.

(Adhesion performance evaluation)
As the wire lubricant, the belt-type dry wire drawing lubricants of Example 1 and Example 2, the calcium-based dry wire drawing lubricants of Comparative Example 1 and Comparative Example 2, and the belt-like polyethylene of Comparative Example 3 were used. Then, the adhesion performance of the lubricant was evaluated by a pressure roller testing machine assuming CRD.
A wire rod (hard steel wire 5.5 mmφ) that is a workpiece base material is pickled and removed from the surface of the workpiece wire with a 12 wt% aqueous hydrochloric acid solution, and then washed with water several times to neutralize the acid treatment and For rust prevention, it was immersed in a 1 wt% borax aqueous solution heated to about 80 ° C. The processed wire was pulled up from the borax aqueous solution and dried to form a borax film on the processed wire, and pre-processed. Subsequently, after heating to a line temperature of 100 ° C., the belt-like dry wire drawing lubricant of Examples 1 and 2 was passed through a pressure roller tester. Similarly, the calcium-based dry wire drawing lubricants of Comparative Examples 1 and 2 and the strip-like polyethylene of Comparative Example 3 were used as lubricants, and the workpiece wires were passed through a pressure roller testing machine.

  Table 1 shows the results of observation of the surface of the wire after passing through the pressure roller tester of each lubricant. A case where a uniform film is formed is indicated by ◯, and a case where a film cannot be formed is indicated by x.

  As is clear from Table 1, the belt-like dry wire drawing lubricants of Examples 1 and 2 were formed with a uniform coating on the wire material equivalent to or better than the proven Comparative Examples 1 and 2. It was confirmed that In Comparative Example 3, peeling of the film and cutting of the film occurred, and a film could not be formed on the wire.

  The wire rods of Example 1 and Example 2, Comparative Example 1 and Comparative Example 2 that were passed through the pressure roller tester were vibrated with a shaker for 15 minutes, and the dropout rate of the lubricant was observed. Table 2 shows the results of the dropout rate of each lubricant.

  As is clear from Table 2, it can be seen that the strip-shaped dry wire drawing lubricants of Examples 1 and 2 have a significantly lower dropout rate than Comparative Examples 1 and 2. From this result, the belt-like dry wire drawing lubricant of the present invention significantly reduces the generation of dust during wire drawing compared to Comparative Example 1 and Comparative Example 2 that have a proven record in the drawing using CRD. It is expected.

  In addition, the interaction with a metal salt of saturated fatty acid and / or a carboxylic acid amide wax, an additive containing an inorganic substance and / or a heat-resistant resin, or a thermoplastic resin improves lubricity and spreadability, and Since it is in the form of a strip, it is possible to reduce dust generation due to dust generation during the introduction of the die box and dropping of the lubricant from the wire after wire drawing, and it is determined that the working environment will be significantly improved.

  The belt-like dry wire drawing lubricant of the present invention is made of a metal such as steel and a large-diameter wire, a base material such as a wire, a tube, a rod, or a rod drawn from a hole die or CRD, Used in wire drawing to reduce the diameter by plastic deformation of a rod or the like.

Claims (12)

  10 to 90 parts by weight of metal salt of saturated fatty acid and / or carboxylic acid amide wax, 10 to 50 parts by weight of additive containing inorganic substance and / or heat resistant resin, and 10 to 90 parts by weight of thermoplastic resin A belt-like dry wire drawing lubricant characterized by having a film contained therein.   The saturated fatty acid forming the metal salt of the saturated fatty acid and / or the carboxylic acid amide wax is butyric acid, caproic acid, caprylic acid, pelargonic acid, capric acid, undecanoic acid, lauric acid, myristic acid, palmitic acid, stearic acid 2. The belt-shaped dry wire drawing lubricant according to claim 1, wherein the lubricant is arachidic acid, behenic acid, lignoceric acid, serotic acid, montanic acid, and / or melissic acid.   The metal salt is a lithium salt, sodium salt, potassium salt, calcium salt, magnesium salt, aluminum salt, zinc salt, barium salt, and / or a composite metal salt thereof. The belt-shaped dry wire drawing lubricant described.   The polybasic acid forming the carboxylic acid based amide wax is malonic acid, succinic acid, adipic acid, sebacic acid, pimelic acid, azelaic acid, phthalic acid, terephthalic acid, cyclohexanedicarboxylic acid, and / or cyclohexyl succinic acid. The belt-shaped dry wire drawing lubricant according to any one of claims 1 to 3.   The amine that forms the carboxylic acid amide wax is ethylamine, monoethanolamine, propylamine, butylamine, pentylamine, hexylamine, octylamine, decylamine, laurylamine, myristylamine, cetylamine, stearylamine, behenylamine, ethylenediamine, 1,4-diaminobutane, hexamethylenediamine, metaxylylenediamine, 1,10-decamethylenediamine, 1,11-undecamethylenediamine, and / or 1,12-dodecamethylenediamine The belt-shaped dry wire drawing lubricant according to any one of claims 1 to 4. The inorganic substance is boric acid, borate, phosphate, sulfate, carbonate, nitrate, slaked lime, titanium oxide, talc, mica, graphite, molybdenum disulfide, layered double hydroxide, and / or sulfur. ,
The belt-like dry wire drawing lubricant according to any one of claims 1 to 5, wherein the heat resistant resin is a melamine cyanurate resin and / or a polytetrafluoroethylene resin.   The thermoplastic resin is polyethylene, polypropylene, polystyrene, acrylonitrile / styrene copolymer resin, acrylonitrile / butadiene / styrene copolymer resin, ethylene / vinyl acetate copolymer resin, methacrylic resin, vinyl chloride, polyamide, polyacetal, polyethylene terephthalate, poly Butylene terephthalate, methyl pentene, polycarbonate, polyphenylene sulfide, polyether ether ketone, tetrafluoroethylene / perfluoroethylene copolymer resin, tetrafluoroethylene / hexafluoropropylene copolymer resin, polyetherimide, polychlorotrifluoroethylene, ethylene Tetrafluoroethylene copolymer resin, polyarylate, polysulfone, polyethersulfone, and / or polyamido Strip dry drawing lubricating material according to claim 1, wherein the imide.   The belt-type dry wire drawing lubricant according to any one of claims 1 to 7, wherein the lubricant is for a cassette roller die which is pulled out while being passed through a die together with a base material to be drawn. 10 to 90 parts by weight of metal salt of saturated fatty acid and / or carboxylic acid based amide wax, 10 to 50 parts by weight of additive containing inorganic substance and / or heat resistant resin, and 10 to 90 parts by weight of thermoplastic resin , Heat-kneaded to form a film, or
Laminated 10 to 90 parts by weight of a saturated fatty acid metal salt and / or carboxylic acid amide wax, 10 to 50 parts by weight of an additive containing an inorganic substance and / or a heat-resistant resin, and 10 to 90 parts by weight of a thermoplastic resin. To form a film
A manufacturing method of a belt-shaped dry wire drawing lubricant characterized by forming it into a belt shape.   While the base material to be drawn is coated with the belt-like dry wire drawing lubricant according to any one of claims 1 to 8, the base material is reduced in diameter by being drawn through a die. A wire drawing method characterized by drawing.   The wire drawing method according to claim 10, wherein the base material is made of metal.   The wire drawing method according to claim 10, wherein the die is a cassette roller die.