JP2009292863A - Liquid-like lubricant for wire drawing processing - Google Patents
Liquid-like lubricant for wire drawing processing Download PDFInfo
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- JP2009292863A JP2009292863A JP2008144840A JP2008144840A JP2009292863A JP 2009292863 A JP2009292863 A JP 2009292863A JP 2008144840 A JP2008144840 A JP 2008144840A JP 2008144840 A JP2008144840 A JP 2008144840A JP 2009292863 A JP2009292863 A JP 2009292863A
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- 239000000314 lubricant Substances 0.000 title claims abstract description 29
- 238000005491 wire drawing Methods 0.000 title claims abstract description 21
- 239000002245 particle Substances 0.000 claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims abstract description 10
- 238000002844 melting Methods 0.000 claims abstract description 10
- 230000008018 melting Effects 0.000 claims abstract description 10
- -1 polyethylene Polymers 0.000 claims description 36
- 239000004698 Polyethylene Substances 0.000 claims description 34
- 229920000573 polyethylene Polymers 0.000 claims description 34
- 239000010687 lubricating oil Substances 0.000 claims description 27
- 239000007788 liquid Substances 0.000 claims description 3
- 238000005461 lubrication Methods 0.000 abstract description 2
- 239000006185 dispersion Substances 0.000 description 8
- 239000000843 powder Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 238000000113 differential scanning calorimetry Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 229940121375 antifungal agent Drugs 0.000 description 1
- 239000003429 antifungal agent Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
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- Lubricants (AREA)
Abstract
Description
本発明は、金属線材、例えば鋼線を伸線加工する場合に用いられる潤滑剤として、従来の乾式伸線用潤滑剤（粉体潤滑剤）に替わる湿式伸線用潤滑剤（液状潤滑剤）に関する。 The present invention is a wet wire drawing lubricant (liquid lubricant) that replaces a conventional dry wire drawing lubricant (powder lubricant) as a lubricant used for drawing a metal wire such as a steel wire. About.
金属線材、例えば、鋼線を伸線加工する場合に用いられる乾式伸線用潤滑剤としては、脂肪酸のアルカリ金属石鹸、例えばステアリン酸カルシウムやステアリン酸ナトリウムのようなステアリン酸のアルカリ金属石鹸が知られている（特許文献１）。
しかしながら、乾式伸線用潤滑剤は粉体であるため、伸線加工時に粉塵が発生する問題があった。一方、湿式伸線用潤滑剤は液体であるため、粉塵が発生する問題がなく、また任意に希釈して使用できるためコストパフォーマンスが高い。しかしながら、湿式伸線用潤滑剤（液状潤滑剤）は、乾式伸線用潤滑剤に比べて潤滑性が劣っているため、湿式伸線用潤滑剤をそのまま、乾式伸線用潤滑剤を用いていた伸線加工ラインに適用することは困難であった。 However, since the dry drawing lubricant is a powder, there is a problem that dust is generated during the drawing process. On the other hand, since the wet drawing lubricant is a liquid, there is no problem that dust is generated, and the cost performance is high because it can be used after being arbitrarily diluted. However, since the wet drawing lubricant (liquid lubricant) is inferior in lubricity compared to the dry drawing lubricant, the wet drawing lubricant is used as it is. It was difficult to apply to a wire drawing line.
そこで、本発明は、液状潤滑剤でありながら、高潤滑性を有し、乾式伸線用潤滑剤の替わりに使用できる液状潤滑剤を提供することを課題とする。 Therefore, an object of the present invention is to provide a liquid lubricant that is a liquid lubricant but has high lubricity and can be used in place of a dry wire drawing lubricant.
第１の本発明は、融点が８０℃以上１４０℃以下であり、粒径が０．２μｍ以上２０μｍ以下の酸化ポリエチレン粒子、および、水を備えてなり、該酸化ポリエチレン粒子が水中に分散されてなる、伸線加工用液状潤滑剤である。 The first aspect of the present invention comprises oxidized polyethylene particles having a melting point of 80 ° C. or more and 140 ° C. or less and a particle size of 0.2 μm or more and 20 μm or less, and water, wherein the oxidized polyethylene particles are dispersed in water. This is a liquid lubricant for wire drawing.
第１の本発明において、酸化ポリエチレン粒子の含有量は、液状潤滑剤全体の質量を１００質量％として、５質量％以上６０質量％以下であることが好ましい。 In the first aspect of the present invention, the content of the oxidized polyethylene particles is preferably 5% by mass or more and 60% by mass or less based on 100% by mass of the entire liquid lubricant.
本発明の液状潤滑剤は、所定の酸化ポリエチレン粒子を備えて構成されるものであり、これにより、高潤滑性を備えたものとなる。よって、本発明の液状潤滑剤は、これまで乾式伸線用潤滑剤（粉体潤滑剤）を使用していた伸線加工ラインでそのまま代替使用することが可能である。また、液状であるので、粉塵の発生がなく、加工の難易度に合わせて、適宜希釈して使用することができるのでコストパフォーマンスに優れる。 The liquid lubricant of the present invention is configured to include predetermined oxidized polyethylene particles, thereby providing high lubricity. Therefore, the liquid lubricant of the present invention can be used as an alternative as it is in a wire drawing line where a dry wire drawing lubricant (powder lubricant) has been used. Moreover, since it is liquid, there is no generation | occurrence | production of dust and it is excellent in cost performance since it can be used by diluting suitably according to the difficulty of processing.
以下本発明を図面に示す実施形態に基づき説明する。
＜液状潤滑剤＞
本発明の液状潤滑剤は、以下に説明する酸化ポリエチレン粒子および水を備えており、該酸化ポリエチレン粒子が水中に分散されたものである。
Hereinafter, the present invention will be described based on embodiments shown in the drawings.
<Liquid lubricant>
The liquid lubricant of the present invention comprises oxidized polyethylene particles and water described below, and the oxidized polyethylene particles are dispersed in water.
（酸化ポリエチレン粒子）
酸化ポリエチレンは、ポリエチレンを酸化することにより製造されるものである。酸化ポリエチレン粒子が分散した分散液は、例えば、ポリエチレンを水に分散させ、これを酵素酸化することにより、得ることができる。また、市販の酸化ポリエチレン粒子が分散した分散液を入手することもできる。
(Polyethylene oxide particles)
Oxidized polyethylene is produced by oxidizing polyethylene. A dispersion in which oxidized polyethylene particles are dispersed can be obtained, for example, by dispersing polyethylene in water and enzymatically oxidizing it. In addition, a dispersion in which commercially available oxidized polyethylene particles are dispersed can also be obtained.
酸化ポリエチレン粒子分散液は、市販の酸化ポリエチレンを水に分散させて製造することもできる。例えば、酸化ポリエチレンを加熱溶融し、必要に応じて界面活性剤を加えた上で、これを、熱水（９５〜９８℃）中に撹拌下にて加える。そして、冷却することにより、酸化ポリエチレン粒子分散液が得られる。酸化ポリエチレンの粒径は、撹拌速度等の条件を調整することにより、０．２μｍ〜２０μｍの範囲に調整することができる。 The oxidized polyethylene particle dispersion can also be produced by dispersing commercially available oxidized polyethylene in water. For example, polyethylene oxide is heated and melted, and a surfactant is added if necessary, and then this is added to hot water (95 to 98 ° C.) with stirring. And by cooling, an oxidized polyethylene particle dispersion is obtained. The particle size of the oxidized polyethylene can be adjusted to a range of 0.2 μm to 20 μm by adjusting conditions such as a stirring speed.
本発明において用いる酸化ポリエチエレン粒子の融点は、８０℃以上１４０℃以下であることが好ましい。融点が低すぎると、機械周りの汚れが激しくなって作業環境の悪化に繋がる。逆に、融点が高すぎると、加工点で溶融しない場合があるため（伸線加工では経験的に加工点温度が約１４０℃となる）、潤滑性が不安定となる。酸化ポリエチレン粒子の融点は、酸化ポエリエチレン粒子が溶け始める温度であり、ＤＳＣ（Ｄｉｆｆｅｒｅｎｔｉａｌ ｓｃａｎｎｉｎｇ ｃａｌｏｒｉｍｅｔｒｙ）によって測定されたものである。 The melting point of oxidized polyethylene particles used in the present invention is preferably 80 ° C. or higher and 140 ° C. or lower. If the melting point is too low, the dirt around the machine becomes severe and the working environment is deteriorated. On the other hand, if the melting point is too high, it may not melt at the processing point (empirically, the processing point temperature is about 140 ° C. in the wire drawing process), and the lubricity becomes unstable. The melting point of the oxidized polyethylene particles is a temperature at which the oxidized polyethylene particles start to melt, and is measured by DSC (Differential scanning calorimetry).
本発明において用いる酸化ポリエチエレン粒子の粒径は、０．２μｍ以上２０μｍ以下であることが好ましい。酸化ポリエチエレン粒子の粒径が小さすぎると、金属接触がおきやすくなり、潤滑性が劣る。逆に、粒径が大きすぎると原液安定性が劣るため、潤滑面への供給が不十分となる可能性がある。酸化ポリエチレン粒子の粒径は、レーザー粒径分析装置によって測定されたものである。 The particle diameter of the oxidized polyethylene particles used in the present invention is preferably 0.2 μm or more and 20 μm or less. When the particle diameter of the oxidized polyethylene particles is too small, metal contact is likely to occur and the lubricity is inferior. On the other hand, if the particle size is too large, the stock solution stability is inferior, and there is a possibility that the supply to the lubricating surface will be insufficient. The particle size of the oxidized polyethylene particles is measured by a laser particle size analyzer.
（添加剤）
本発明の潤滑剤組成物は、上記した酸化ポリエチレン粒子分散液以外に添加剤を含有していてもよい。添加剤の量は、特に限定されず、本発明の目的を達成する範囲内で、適宜調整することができる。添加剤としては、例えば、界面活性剤、増粘剤、酸化防止剤、防錆剤、防腐剤、防カビ剤、着色剤、泡立ち防止剤等を挙げることができる。
(Additive)
The lubricant composition of the present invention may contain additives in addition to the above-described oxidized polyethylene particle dispersion. The amount of the additive is not particularly limited, and can be appropriately adjusted within a range that achieves the object of the present invention. Examples of the additive include a surfactant, a thickener, an antioxidant, a rust inhibitor, an antiseptic, an antifungal agent, a colorant, and an antifoaming agent.
（酸化ポリエチレン粒子の含有量）
本発明の液状潤滑剤中の上記した酸化ポリエチレン粒子の含有量は、液状潤滑剤全体を基準（１００質量％）として、５質量％以上６０質量％以下であることが好ましく、１０質量％以上５０質量％以下であることがより好ましい。酸化ポリエチレンの含有量が少なすぎると、潤滑不足となる虞があり、多すぎると、原液が不安定となる虞がある。
(Content of polyethylene oxide particles)
The content of the oxidized polyethylene particles in the liquid lubricant of the present invention is preferably 5% by mass or more and 60% by mass or less, preferably 10% by mass or more and 50% by mass or less, based on the whole liquid lubricant (100% by mass). It is more preferable that the amount is not more than mass%. If the content of polyethylene oxide is too small, lubrication may be insufficient, and if it is too large, the stock solution may become unstable.
（用途）
本発明の液状潤滑剤は、金属線材、例えば、鋼線を伸線加工する際の、潤滑剤として用いることができる。ここで、伸線加工とは、金属線材をより細く延伸させる加工をいう。伸線加工においては、使用されるダイスの長寿命化、および、加工して得られた線材の表面品質向上等の目的で潤滑剤が使用される。本発明において、液状潤滑剤は、伸線加工において、潤滑剤ＢＯＸ内に入れられ，線材を該ＢＯＸ内に通過させることで塗布される。
(Use)
The liquid lubricant of the present invention can be used as a lubricant when a metal wire, for example, a steel wire is drawn. Here, the wire drawing process refers to a process of drawing a metal wire more finely. In the wire drawing, a lubricant is used for the purpose of extending the life of the die used and improving the surface quality of the wire obtained by processing. In the present invention, the liquid lubricant is placed in the lubricant BOX and is applied by passing the wire through the BOX in the wire drawing process.
（実施例１）
ノプコＳＮコート２８９（サンノプコ社製、酸化ポリエチレン粒子含量：４０質量％）をそのまま、液状潤滑剤として用いた。
(Example 1)
Nopco SN coat 289 (manufactured by San Nopco, oxidized polyethylene particle content: 40% by mass) was used as it was as a liquid lubricant.
（実施例２）
ノプコＳＮコート２８９（サンノプコ社製、酸化ポリエチレン粒子含量：４０質量％）を８０質量部、および、水２０質量部を混合して液状潤滑剤とした。液状潤滑剤中の酸化ポリエチレンの含有量は３２質量％である。
(Example 2)
80 parts by mass of Nopco SN Coat 289 (manufactured by San Nopco, oxidized polyethylene particle content: 40% by mass) and 20 parts by mass of water were mixed to obtain a liquid lubricant. The content of polyethylene oxide in the liquid lubricant is 32% by mass.
（実施例３）
ノプコＳＮコート２８９（サンノプコ社製、酸化ポリエチレン粒子含量：４０質量％）を６０質量部、および、水４０質量部を混合して液状潤滑剤とした。液状潤滑剤中の酸化ポリエチレンの含有量は２４質量％である。
(Example 3)
60 parts by mass of Nopco SN coat 289 (manufactured by San Nopco, oxidized polyethylene particle content: 40% by mass) and 40 parts by mass of water were mixed to obtain a liquid lubricant. The content of polyethylene oxide in the liquid lubricant is 24% by mass.
（実施例４）
ノプコＳＮコート９５０（サンノプコ社製、酸化ポリエチレン粒子含量：４０質量％）をそのまま、液状潤滑剤として用いた。
Example 4
Nopco SN Coat 950 (manufactured by San Nopco, oxidized polyethylene particle content: 40% by mass) was used as it was as a liquid lubricant.
（実施例５）
表１に示す所定の粒径および融点の酸化ポリエチレン含有分散液を、液状潤滑剤として用いた。酸化ポリエチレンの含有量は４０質量％である。
(Example 5)
A polyethylene oxide-containing dispersion having a predetermined particle size and melting point shown in Table 1 was used as a liquid lubricant. The content of oxidized polyethylene is 40% by mass.
（比較例１）
伸線加工用粉体潤滑剤である、コーシンＳ６５０Ｂ（共栄社化学社製）をそのまま潤滑剤として用いた。
(Comparative Example 1)
Koshin S650B (manufactured by Kyoeisha Chemical Co., Ltd.), which is a powder lubricant for wire drawing, was used as a lubricant as it was.
（比較例２）
ノプコートＰＥＭ−１７（サンノプコ社製、酸化ポリエチレン粒子含量：４０質量％）をそのまま、液状潤滑剤として用いた。
(Comparative Example 2)
Nopcoat PEM-17 (manufactured by San Nopco, oxidized polyethylene particle content: 40% by mass) was used as it was as a liquid lubricant.
（比較例３）
表１に示す所定の粒径および融点の酸化ポリエチレン粒子含有分散液を、液状潤滑剤として用いた。酸化ポリエチレンの含有量は、２５質量％である。
(Comparative Example 3)
A dispersion containing oxidized polyethylene particles having a predetermined particle size and melting point shown in Table 1 was used as a liquid lubricant. The content of oxidized polyethylene is 25% by mass.
（比較例４）
表１に示す所定の粒径および融点の酸化ポリエチレン粒子含有分散液を、液状潤滑剤として用いた。酸化ポリエチレンの含有量は、４０質量％である。
(Comparative Example 4)
A dispersion containing oxidized polyethylene particles having a predetermined particle size and melting point shown in Table 1 was used as a liquid lubricant. The content of oxidized polyethylene is 40% by mass.
（評価方法）
上記潤滑剤を用いて行った伸線加工試験について、以下に説明する。加工材としては、φ５．０ｍｍのＳＣＭ４３５（未処理材）を用いた。伸線加工装置としては、島津オートグラフＡＧ−１０ＴＣを使用し、引抜速度を０．５ｍ／分として、断面減少率を１９％として伸線加工を行った。ダイスとしては、超硬（φ４．５ｍｍ、半角：７°）を用い、ダイス温度は室温とした。
(Evaluation methods)
The wire drawing test performed using the lubricant will be described below. As the processed material, SCM435 (untreated material) with a diameter of 5.0 mm was used. As the wire drawing apparatus, Shimadzu Autograph AG-10TC was used, and the wire drawing was performed with a drawing speed of 0.5 m / min and a cross-section reduction rate of 19%. Carbide (φ4.5 mm, half angle: 7 °) was used as the die, and the die temperature was room temperature.
潤滑剤の塗布方法としては、栓付きパイプに潤滑剤を入れ、これに線材を浸漬した状態で伸線した。また、比較例１において粉体潤滑剤を用いた場合は、該粉体中に線材を入れて粉体を付着させてから、伸線加工を行った。 As a method for applying the lubricant, the lubricant was put in a pipe with a stopper, and the wire was drawn in a state where the wire was immersed therein. Further, when a powder lubricant was used in Comparative Example 1, a wire rod was put in the powder and the powder was adhered, and then wire drawing was performed.
上記の伸線加工試験において、引抜力（Ｎ）を測定すると共に、ビビリの度合いを以下の基準にて評価した。
１：ビビリなし
２：ビビリ小
３：ビビリ大
４：ビビリ特大
In the wire drawing test, the drawing force (N) was measured, and the degree of chatter was evaluated according to the following criteria.
1: No chatter 2: Chatter small 3: Chatter large 4: Chatter extra large
（評価結果） (Evaluation results)
以上、現時点において、もっとも、実践的であり、かつ、好ましいと思われる実施形態に関連して本発明を説明したが、本発明は、本願明細書中に開示された実施形態に限定されるものではなく、請求の範囲および明細書全体から読み取れる発明の要旨あるいは思想に反しない範囲で適宜変更可能であり、そのような変更を伴う液状潤滑剤もまた本発明の技術的範囲に包含されるものとして理解されなければならない。 While the present invention has been described in connection with embodiments that are presently the most practical and preferred, the present invention is not limited to the embodiments disclosed herein. However, it can be appropriately changed without departing from the scope or spirit of the invention which can be read from the claims and the entire specification, and liquid lubricants with such changes are also included in the technical scope of the present invention. Must be understood as.
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|---|---|---|---|
| JP2008144840A JP5325464B2 (en) | 2008-06-02 | 2008-06-02 | Liquid lubricant for wire drawing |
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| JP2008144840A JP5325464B2 (en) | 2008-06-02 | 2008-06-02 | Liquid lubricant for wire drawing |
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| JP5325464B2 JP5325464B2 (en) | 2013-10-23 |
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| JP2003253290A (en) * | 2002-02-27 | 2003-09-10 | Yushiro Chem Ind Co Ltd | Water-based lubricating oil composition for plastically working non-ferrous metal |
| JP2004300378A (en) * | 2003-04-01 | 2004-10-28 | San Nopco Ltd | Emulsified wax dispersion |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003253290A (en) * | 2002-02-27 | 2003-09-10 | Yushiro Chem Ind Co Ltd | Water-based lubricating oil composition for plastically working non-ferrous metal |
| JP2004300378A (en) * | 2003-04-01 | 2004-10-28 | San Nopco Ltd | Emulsified wax dispersion |
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