JP2011079956A - Water-soluble metal processing oil - Google Patents
Water-soluble metal processing oil Download PDFInfo
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- JP2011079956A JP2011079956A JP2009233150A JP2009233150A JP2011079956A JP 2011079956 A JP2011079956 A JP 2011079956A JP 2009233150 A JP2009233150 A JP 2009233150A JP 2009233150 A JP2009233150 A JP 2009233150A JP 2011079956 A JP2011079956 A JP 2011079956A
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- 238000012545 processing Methods 0.000 title abstract description 13
- 239000002184 metal Substances 0.000 title abstract description 8
- 229910052751 metal Inorganic materials 0.000 title abstract description 8
- -1 hydroxy aliphatic carboxylic acid Chemical class 0.000 claims abstract description 20
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 239000002199 base oil Substances 0.000 claims abstract description 7
- 239000007864 aqueous solution Substances 0.000 claims abstract description 5
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 claims abstract description 4
- 238000005555 metalworking Methods 0.000 claims description 26
- 239000012530 fluid Substances 0.000 claims description 25
- 150000001412 amines Chemical class 0.000 claims description 9
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 9
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 9
- 229930195729 fatty acid Natural products 0.000 claims description 9
- 239000000194 fatty acid Substances 0.000 claims description 9
- 150000004665 fatty acids Chemical class 0.000 claims description 9
- 125000004432 carbon atom Chemical group C* 0.000 claims description 7
- 239000004359 castor oil Substances 0.000 claims description 6
- 235000019438 castor oil Nutrition 0.000 claims description 6
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims description 6
- FBUKVWPVBMHYJY-UHFFFAOYSA-N nonanoic acid Chemical compound CCCCCCCCC(O)=O FBUKVWPVBMHYJY-UHFFFAOYSA-N 0.000 claims description 6
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 claims description 6
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 5
- CRVGTESFCCXCTH-UHFFFAOYSA-N methyl diethanolamine Chemical compound OCCN(C)CCO CRVGTESFCCXCTH-UHFFFAOYSA-N 0.000 claims description 5
- 239000003755 preservative agent Substances 0.000 claims description 4
- 230000002335 preservative effect Effects 0.000 claims description 4
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims description 3
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 claims description 3
- HXKKHQJGJAFBHI-UHFFFAOYSA-N 1-aminopropan-2-ol Chemical compound CC(O)CN HXKKHQJGJAFBHI-UHFFFAOYSA-N 0.000 claims description 3
- QFGCFKJIPBRJGM-UHFFFAOYSA-N 12-[(2-methylpropan-2-yl)oxy]-12-oxododecanoic acid Chemical compound CC(C)(C)OC(=O)CCCCCCCCCCC(O)=O QFGCFKJIPBRJGM-UHFFFAOYSA-N 0.000 claims description 3
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 3
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 3
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 3
- 239000005635 Caprylic acid (CAS 124-07-2) Substances 0.000 claims description 3
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 3
- 239000005642 Oleic acid Substances 0.000 claims description 3
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000005643 Pelargonic acid Substances 0.000 claims description 3
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 claims description 3
- 235000019484 Rapeseed oil Nutrition 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 3
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 3
- 239000000417 fungicide Substances 0.000 claims description 3
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims description 3
- 239000001630 malic acid Substances 0.000 claims description 3
- 235000011090 malic acid Nutrition 0.000 claims description 3
- 229960002446 octanoic acid Drugs 0.000 claims description 3
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- CBDKQYKMCICBOF-UHFFFAOYSA-N thiazoline Chemical compound C1CN=CS1 CBDKQYKMCICBOF-UHFFFAOYSA-N 0.000 claims description 3
- 230000002421 anti-septic effect Effects 0.000 claims description 2
- 230000000855 fungicidal effect Effects 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 35
- 239000000463 material Substances 0.000 abstract description 12
- 238000005520 cutting process Methods 0.000 abstract description 10
- 239000000243 solution Substances 0.000 abstract description 10
- 235000019198 oils Nutrition 0.000 description 32
- 239000003795 chemical substances by application Substances 0.000 description 12
- 239000011550 stock solution Substances 0.000 description 9
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000002826 coolant Substances 0.000 description 5
- 239000002173 cutting fluid Substances 0.000 description 5
- 239000002480 mineral oil Substances 0.000 description 5
- 235000010446 mineral oil Nutrition 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 206010040880 Skin irritation Diseases 0.000 description 4
- 230000036556 skin irritation Effects 0.000 description 4
- 231100000475 skin irritation Toxicity 0.000 description 4
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 3
- 238000007865 diluting Methods 0.000 description 3
- 229920001451 polypropylene glycol Polymers 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- SLINHMUFWFWBMU-UHFFFAOYSA-N Triisopropanolamine Chemical compound CC(O)CN(CC(C)O)CC(C)O SLINHMUFWFWBMU-UHFFFAOYSA-N 0.000 description 2
- 150000004996 alkyl benzenes Chemical class 0.000 description 2
- 239000002518 antifoaming agent Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000003925 fat Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010695 polyglycol Substances 0.000 description 2
- 229920000151 polyglycol Polymers 0.000 description 2
- 229920005862 polyol Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- XBPCUCUWBYBCDP-UHFFFAOYSA-N Dicyclohexylamine Chemical compound C1CCCCC1NC1CCCCC1 XBPCUCUWBYBCDP-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 229920005603 alternating copolymer Polymers 0.000 description 1
- 230000003254 anti-foaming effect Effects 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000001139 pH measurement Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 229920013639 polyalphaolefin Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002503 polyoxyethylene-polyoxypropylene Polymers 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
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- Lubricants (AREA)
Abstract
Description
本発明は、切削加工、研削加工等の金属加工に適用できる、水で希釈して使用する水溶性金属加工用油剤に関する。特に被削材及び工作機械の汚れを防止できる水溶性金属加工油剤であり、ベアリング製造の際に使用するのに好適な水溶性金属加工油剤に関するものである。 The present invention relates to a water-soluble oil for metal processing that can be used for metal processing such as cutting and grinding, and diluted with water. In particular, the present invention relates to a water-soluble metalworking fluid that can prevent contamination of a work material and a machine tool, and relates to a water-soluble metalworking fluid suitable for use in the production of bearings.
切削、研削加工分野に広く使用される切削油剤には、鉱油をベースにした、不水溶性切削油剤と、鉱油、界面活性剤、有機アミン等を含有し、水に希釈して使用する水溶性切削油剤とがある。水溶性切削油剤においては、油剤の耐腐敗性能を向上させるために、防腐剤と呼ばれる化合物を添加したり、防腐効果のあるアミンを処方したりする。
例えば、油剤の耐腐敗性やさび止め性を向上させる目的で、Ｎ−アルキルアルカノールアミン、脂環式アミンおよび３級アミンを添加してなる水溶性金属加工油剤（特許文献１）が提案されている。しかし、これらの水溶性アミンを水溶性油剤の成分として使用すると耐腐敗性は向上するが、皮膚刺激性が強くなりすぎる問題が指摘されている。
The cutting fluid widely used in the cutting and grinding fields contains water-insoluble cutting fluid based on mineral oil, mineral oil, surfactant, organic amine, etc. With cutting fluid. In a water-soluble cutting fluid, a compound called a preservative is added or an amine having a preservative effect is formulated in order to improve the antiseptic performance of the oil.
For example, a water-soluble metalworking oil (Patent Document 1) obtained by adding an N-alkylalkanolamine, an alicyclic amine, and a tertiary amine has been proposed for the purpose of improving the anti-corrosion and rust resistance of the oil. Yes. However, when these water-soluble amines are used as a component of a water-soluble oil agent, the spoilage resistance is improved, but the problem that the skin irritation becomes too strong has been pointed out.
そのため、トリエタノールアミン、トリイソプロパノールアミン、Ｎ−メチルジエタノールアミンなどの皮膚刺激性が比較的低い３級水溶性アミンを上記水溶性アミンと併用することにより、水溶性油剤の長期間におけるさび止め性、耐腐敗性、および低皮膚刺激性を両立させる試みがなされている。しかしながら、トリエタノールアミン、トリイソプロパノールアミン、Ｎ−メチルジエタノールアミンを水溶性油剤の成分として使用すると、いずれも消泡性の問題が発生したり、また常温で固体状であるため作業性が悪い問題があった。 Therefore, by using a tertiary water-soluble amine with relatively low skin irritation such as triethanolamine, triisopropanolamine, N-methyldiethanolamine, etc. in combination with the water-soluble amine, the rust-preventing property of the water-soluble oil agent over a long period of time, Attempts have been made to achieve both rot resistance and low skin irritation. However, when triethanolamine, triisopropanolamine, or N-methyldiethanolamine is used as a component of a water-soluble oil agent, all of them have a problem of defoaming property, and also have a problem of poor workability because they are solid at room temperature. there were.
そこで、高潤滑性を有し、長期間におけるさび止め性、耐腐敗性に優れ、しかも、低皮膚刺激性であり、消泡性が良好な水溶性油剤として、アルカノールアミン、有機カルボン酸、ポリエーテル類を含有する油剤が提案されている（特許文献２）。
一方、加工前の被削材には、保管時の錆を防ぐための防錆剤が塗布されている場合が多い。この防錆油は、切屑と共にクーラント中に混ざる。このとき、細かくなった切屑は粘性の高い防錆剤成分と共に被削材や工作機械に汚れとして付着しやすい状態になる。また加工時に発生する熱により、切削油剤成分の一部が水に溶けにくくなり、細かい切屑とともに、被削材や工作機械に付着し汚れとなる場合があった。
このように、従来の水溶性金属加工油剤は、被削材及び工作機械を汚染するという問題があった。
Therefore, water-soluble oils having high lubricity, excellent rust resistance and anti-corrosion properties over a long period of time, low skin irritation, and good antifoaming properties include alkanolamines, organic carboxylic acids, An oil containing an ether has been proposed (Patent Document 2).
On the other hand, the work material before processing is often coated with a rust preventive agent for preventing rust during storage. This rust preventive oil is mixed in the coolant together with the chips. At this time, the finely divided chips are likely to adhere to the work material and machine tool as dirt together with the highly viscous rust inhibitor component. In addition, due to the heat generated during processing, a part of the cutting fluid component becomes difficult to dissolve in water, and may adhere to the work material or machine tool together with fine chips and become dirty.
Thus, the conventional water-soluble metalworking fluid has a problem of contaminating the work material and the machine tool.
従って本発明の目的は、切削性、原液及び希釈液の安定性に優れ、被削材及び工作機械を汚染することが少ない水溶性金属加工油剤を提供することである。 Accordingly, an object of the present invention is to provide a water-soluble metalworking fluid that is excellent in machinability, stability of stock solution and diluted solution, and hardly contaminates the work material and machine tool.
本発明の以下に示す水溶性金属加工油剤を提供するものである。
１．下記の成分を含み、ｐＨ（５質量％水溶液）が８．５〜１０．５である水溶性金属加工油剤。
（Ａ）水又は水と基油の混合物、
（Ｂ）炭素数８〜２２の脂肪族カルボン酸、炭素数１０〜２２のヒドロキシ脂肪族カルボン酸及び前記ヒドロキシ脂肪族カルボン酸の縮合物からなる群から選ばれる少なくとも１種、
（Ｃ）炭素数２〜８のヒドロキシ脂肪族カルボン酸、及び
（Ｄ）炭素数２〜１０のアルカノールアミン。
２．さらに、（Ｅ）ポリオキシアルキレングリコールを含む上記１記載の水溶性金属加工油剤。
３．成分（Ｂ）が、カプリル酸、オレイン酸、ペラルゴン酸、ドデカン二酸、ひまし油脂肪酸、菜種油脂肪酸、及びひまし油脂肪酸縮合物からなる群から選ばれる少なくとも１種である上記１または２記載の水溶性金属加工油剤。
４．成分（Ｃ）がクエン酸及びリンゴ酸からなる群から選ばれる少なくとも１種である上記１〜３のいずれか１項記載の水溶性金属加工油剤。
５．成分（Ｄ）が、モノイソプロパノールアミン、モノエタノールアミン、ジエタノールアミン、トリエタノールアミン及びメチルジエタノールアミンからなる群から選ばれる少なくとも１種である上記１〜４のいずれか１項記載の水溶性金属加工油剤。
６．成分（Ｅ）のポリオキシアルキレングリコールがエチレンオキサイドとプロピレンオキサイドの共重合体であり、その数平均分子量が２００〜１０，０００である上記２記載の水溶性金属加工油剤。
７．成分（Ａ）が１７．０〜９５．９質量％、成分（Ｂ）が１．０〜３０．０質量％、成分（Ｃ）が０．１〜５．０質量％、成分（Ｄ）が３．０〜３０．０質量％、及び成分（Ｅ）が０．０〜１８．０質量％である上記１〜６のいずれか１項記載の水溶性金属加工油剤。
８．さらに、アミン系殺菌剤、シリコン系消泡剤及びチアゾリン系防腐剤からなる群から選ばれる少なくとも１種を０．１〜１．０質量％含有する上記１〜７のいずれか１項記載の水溶性金属加工油剤。
The following water-soluble metalworking fluids of the present invention are provided.
1. A water-soluble metalworking fluid containing the following components and having a pH (5% by mass aqueous solution) of 8.5 to 10.5.
(A) water or a mixture of water and base oil,
(B) at least one selected from the group consisting of an aliphatic carboxylic acid having 8 to 22 carbon atoms, a hydroxy aliphatic carboxylic acid having 10 to 22 carbon atoms, and a condensate of the hydroxy aliphatic carboxylic acid,
(C) C2-C8 hydroxy aliphatic carboxylic acid, and (D) C2-C10 alkanolamine.
2. The water-soluble metalworking fluid according to 1 above, further comprising (E) polyoxyalkylene glycol.
3. 3. The water-soluble metal according to 1 or 2 above, wherein the component (B) is at least one selected from the group consisting of caprylic acid, oleic acid, pelargonic acid, dodecanedioic acid, castor oil fatty acid, rapeseed oil fatty acid, and castor oil fatty acid condensate Processing oil.
4). 4. The water-soluble metalworking fluid according to any one of 1 to 3, wherein the component (C) is at least one selected from the group consisting of citric acid and malic acid.
5). 5. The water-soluble metalworking fluid according to any one of 1 to 4, wherein the component (D) is at least one selected from the group consisting of monoisopropanolamine, monoethanolamine, diethanolamine, triethanolamine, and methyldiethanolamine.
6). 3. The water-soluble metalworking fluid according to 2, wherein the polyoxyalkylene glycol of component (E) is a copolymer of ethylene oxide and propylene oxide, and the number average molecular weight thereof is 200 to 10,000.
7). Component (A) is 17.0-95.9 mass%, Component (B) is 1.0-30.0 mass%, Component (C) is 0.1-5.0 mass%, and Component (D) is 7. The water-soluble metalworking fluid according to any one of 1 to 6 above, wherein 3.0 to 30.0% by mass and the component (E) is 0.0 to 18.0% by mass.
8). The water-soluble solution according to any one of 1 to 7 above, further containing 0.1 to 1.0% by mass of at least one selected from the group consisting of an amine-based disinfectant, a silicon-based antifoaming agent, and a thiazoline-based preservative. Metal processing oil.
本発明の水溶性金属加工油剤は、切削性、原液及び希釈液の安定性に優れ、被削材及び工作機械を汚染することが少ない。 The water-soluble metalworking fluid of the present invention is excellent in machinability, stability of stock solution and diluted solution, and hardly contaminates the work material and machine tool.
本発明の成分（Ａ）は、水単独でも良いし、水と基油の混合物でも良い。
基油としては、例えば、鉱油、ポリオールエステル、油脂、ポリグリコール、ポリα−オレフィン、α−オレフィン、ノルマルパラフィン、イソパラフィン、アルキルベンゼン、ポリエーテルなどが挙げられる。好ましくは、鉱油、ポリオールエステル、油脂、ポリグリコール、アルキルベンゼンである。これらは、単品でも複数種の混合物としても良い。本発明の組成物中、水と基油の合計量に対する基油の割合は、好ましくは０〜８０質量％である。
Component (A) of the present invention may be water alone or a mixture of water and base oil.
Examples of the base oil include mineral oil, polyol ester, fats and oils, polyglycol, poly α-olefin, α-olefin, normal paraffin, isoparaffin, alkylbenzene, polyether, and the like. Mineral oil, polyol ester, fats and oils, polyglycol, and alkylbenzene are preferable. These may be a single product or a mixture of a plurality of types. In the composition of the present invention, the ratio of the base oil to the total amount of water and base oil is preferably 0 to 80% by mass.
本発明の成分（Ｂ）は炭素数８〜２２の脂肪族カルボン酸、炭素数１０〜２２のヒドロキシ脂肪族カルボン酸及び前記ヒドロキシ脂肪族カルボン酸の縮合物からなる群から選ばれる少なくとも１種である。成分（Ｂ）の好ましい具体例としては、カプリル酸、オレイン酸、ペラルゴン酸、ドデカン二酸、ひまし油脂肪酸、菜種油脂肪酸、ひまし油脂肪酸縮合物が挙げられる。 Component (B) of the present invention is at least one selected from the group consisting of aliphatic carboxylic acids having 8 to 22 carbon atoms, hydroxy aliphatic carboxylic acids having 10 to 22 carbon atoms, and condensates of the hydroxy aliphatic carboxylic acids. is there. Preferable specific examples of component (B) include caprylic acid, oleic acid, pelargonic acid, dodecanedioic acid, castor oil fatty acid, rapeseed oil fatty acid, and castor oil fatty acid condensate.
本発明の成分（Ｃ）は、炭素数２〜８のヒドロキシ脂肪族カルボン酸であり、水に溶けやすく、脂肪族オキシ酸とも呼ばれる。成分（Ｃ）の好ましい具体例としては、クエン酸、リンゴ酸が挙げられる。
本発明の成分（Ｄ）は炭素数２〜１０のアルカノールアミンである。成分（Ｄ）の好ましい具体例としては、モノイソプロパノールアミン、モノエタノールアミン、ジエタノールアミン、トリエタノールアミン、メチルジエタノールアミンが挙げられる。
Component (C) of the present invention is a C2-C8 hydroxy aliphatic carboxylic acid, is easily soluble in water, and is also called an aliphatic oxyacid. Preferable specific examples of component (C) include citric acid and malic acid.
Component (D) of the present invention is an alkanolamine having 2 to 10 carbon atoms. Preferable specific examples of component (D) include monoisopropanolamine, monoethanolamine, diethanolamine, triethanolamine, and methyldiethanolamine.
本発明において任意成分である成分（Ｅ）はポリオキシアルキレングリコールである。成分（Ｅ）の好ましい具体例としては、エチレンオキサイドとプロピレンオキサイドのモル比率が５：９５〜５０：５０のランダム共重合、交互共重合及びブロック共重合からなる少なくとも１種の共重合体であり、その数平均分子量が２００〜１０，０００であるものが挙げられる。 In the present invention, the optional component (E) is polyoxyalkylene glycol. A preferred specific example of the component (E) is at least one copolymer composed of random copolymer, alternating copolymer, and block copolymer having a molar ratio of ethylene oxide to propylene oxide of 5:95 to 50:50. And those having a number average molecular weight of 200 to 10,000.
本発明の水溶性金属加工油剤において、各成分の含有量は、油剤（原液）全体に対して成分（Ａ）が、好ましくは１７．０〜９５．９質量％、さらに好ましくは３０〜８０質量％、成分（Ｂ）が、好ましくは１．０〜３０．０質量％、さらに好ましくは５〜２５質量％、成分（Ｃ）が、好ましくは０．１〜５．０質量％、さらに好ましくは０．３〜３質量％、成分（Ｄ）が、好ましくは３．０〜３０．０質量％、さらに好ましくは１０〜２５質量％、及び成分（Ｅ）が、好ましくは０．０〜３０．０質量％、さらに好ましくは５〜２０質量％である。 In the water-soluble metalworking fluid of the present invention, the content of each component is preferably 17.0 to 95.9 mass%, more preferably 30 to 80 mass% of the component (A) with respect to the entire oil (raw solution). %, Component (B) is preferably 1.0 to 30.0% by mass, more preferably 5 to 25% by mass, and component (C) is preferably 0.1 to 5.0% by mass, more preferably 0.3-3 mass%, component (D) is preferably 3.0-30.0 mass%, more preferably 10-25 mass%, and component (E) is preferably 0.0-30. It is 0 mass%, More preferably, it is 5-20 mass%.
成分（Ｂ）の含有量が上記範囲内にあると、特に切削性が優れている。
成分（Ｃ）の含有量が上記範囲内にあると、特に汚れ防止効果が優れている。
成分（Ｄ）の含有量が上記範囲内にあると、特に製品外観の安定性が優れている。
成分（Ｅ）の含有量が上記範囲内にあると、さらに製品外観の安定性が優れている。
When the content of the component (B) is within the above range, the machinability is particularly excellent.
When the content of the component (C) is within the above range, the antifouling effect is particularly excellent.
When the content of the component (D) is within the above range, the stability of the product appearance is particularly excellent.
When the content of the component (E) is within the above range, the stability of the product appearance is further excellent.
本発明の水溶性金属加工油剤は、さらに、アミン系殺菌剤、シリコン系消泡剤及びチアゾリン系防腐剤からなる群から選ばれる少なくとも１種を、好ましくは０．１〜１．０質量％含有することができる。
本発明の水溶性金属加工油剤のｐＨ（原液を水で２０倍に希釈して２５℃で測定）は、８．５〜１０．５であり、好ましくは９〜１０である。
本発明の油剤は所望の成分を所望量で混合することにより容易に製造することができる。
本発明の水溶性金属加工油剤は、水で５〜２００倍程度に希釈して使用するのが一般的である。
The water-soluble metalworking fluid of the present invention further contains at least one selected from the group consisting of amine fungicides, silicon antifoaming agents and thiazoline preservatives, preferably 0.1 to 1.0% by mass. can do.
The pH of the water-soluble metalworking fluid of the present invention (measured at 25 ° C. by diluting the stock solution 20 times with water) is 8.5 to 10.5, preferably 9 to 10.
The oil agent of the present invention can be easily produced by mixing desired components in desired amounts.
The water-soluble metalworking fluid of the present invention is generally diluted with water to about 5-200 times and used.
実施例１〜１０及び比較例１〜１０
以下、実施例及び比較例を示し、本発明をさらに詳細に説明する。下記表１及び表２に記載の配合組成で各金属加工油剤を調製した。表中の配合量は質量％である。
これらの油剤を以下の方法により評価した。結果を合わせて表１及び表２に示す。
Examples 1-10 and Comparative Examples 1-10
Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples. Each metalworking fluid was prepared with the composition shown in Table 1 and Table 2 below. The compounding quantity in a table | surface is the mass%.
These oil agents were evaluated by the following methods. The results are shown in Table 1 and Table 2.
試験方法及び測定方法
ｐＨ測定
油剤の原液を水で２０倍（５質量％）に希釈した油剤についてＪＩＳ Ｚ ８８０２に準拠して測定する。
加工油剤原液の外観
油剤の原液を室温に２４時間静置し、分離及び濁りを確認。
判定基準
合格 ：〇（均一液状）
不合格 ：×（油分の分離などの不均一液状）
加工油剤希釈液の外観
油剤の原液を水で２０倍（５質量％）に希釈した油剤を室温に２４時間静置した後、その外観を観察する。
判定基準
合格 ：〇（均一液状）
不合格 ：×（油分の分離などの不均一液状）
Test Method and Measurement Method pH Measurement An oil agent obtained by diluting a stock solution of an oil agent 20 times (5% by mass) with water is measured according to JIS Z 8802.
Appearance of processing oil stock solution Leave the oil stock solution at room temperature for 24 hours to confirm separation and turbidity.
Judgment criteria Pass: 〇 (Uniform liquid)
Fail: x (non-uniform liquid such as oil separation)
Appearance of processing oil diluted solution After the oil solution diluted 20 times (5% by mass) with water is allowed to stand at room temperature for 24 hours, the appearance is observed.
Judgment criteria Pass: 〇 (Uniform liquid)
Fail: x (non-uniform liquid such as oil separation)
汚れ評価試験方法
（Ａ）試験クーラントの調製
油剤の原液を水で２０倍に希釈した液５００ｇに、ドライ切削により得られた鋳物（ＦＣ−２００）切粉１００ｇを入れて２４時間攪拌した後、５Ａ濾紙で濾過し、クーラントを調製する。
（Ｂ）汚れ物質の調製
ドライ切削により得られた鋳物（ＦＣ−２００）切粉を１５０メッシュの金網でふるいにかけ、通過した鉄粉に鉱物油（ＶＧ４６）５質量％を混ぜたものを汚れ物質とする。
（Ｃ）汚れ試験
（Ａ）のクーラント４００ｍｌと（Ｂ）の汚れ物質２ｇを家庭用ミキサーに入れて３分間攪拌した後、１０００ｍｌのメスシリンダーに入れる。
（Ｄ）観察
１０００ｍｌのメスシリンダー中の試験液の泡が消泡した後、クーラント界面部内壁の汚れを観察する。
判定基準
合格 ：〇（汚れなし）
不合格 ：×（汚れあり）
Dirt Evaluation Test Method (A) Preparation of Test Coolant After adding 100 g of casting (FC-200) chips obtained by dry cutting to 500 g of a liquid obtained by diluting the stock solution of the oil agent 20 times with water, the mixture was stirred for 24 hours. Filter with 5A filter paper to prepare the coolant.
(B) Preparation of dirt substance Cast material (FC-200) obtained by dry cutting was sieved with a 150 mesh wire mesh, and the iron powder that passed through was mixed with 5% by mass of mineral oil (VG46) as a dirt substance. And
(C) Dirt test 400 ml of the coolant from (A) and 2 g of the dirt material from (B) are placed in a home mixer and stirred for 3 minutes, and then placed in a 1000 ml graduated cylinder.
(D) Observation After the bubbles of the test liquid in the 1000 ml measuring cylinder disappear, the dirt on the inner wall of the coolant interface is observed.
Judgment criteria Pass: Yes (no dirt)
Fail: × (Stained)
切削性試験
下記被削材を用い、下記条件にてφ６のタップ加工を行い、加工時に受ける切削抵抗（トルク［Ｎ・ｍ］）を測定する。
工具： ＯＳＧ製 Ｂ−ＮＲＴ ＲＨ７ Ｍ６×１．０
被削材： ＡＣ８Ｂ−Ｔ６
切削速度：１０ ｍ／ｍｉｎ
送り： １．０ ｍｍ／ｒｅｖ
下穴： ５．４８ ｍｍリーマ仕上げ，止まり穴
切削長： ２０ ｍｍ
給油方法：下穴に試験油剤を充填
濃度： 原液を水で５質量％に希釈
判定基準
合格 ：〇 切削トルクが２．４０Ｎ・ｍ 以下
不合格 ：× 切削トルクが２．４０Ｎ・ｍ 超
Machinability test Using the following work material, φ6 tapping is performed under the following conditions, and the cutting resistance (torque [N · m]) received during processing is measured.
Tool: OSG B-NRT RH7 M6 × 1.0
Work material: AC8B-T6
Cutting speed: 10 m / min
Feeding: 1.0 mm / rev
Pilot hole: 5.48 mm reamer finish, blind hole Cutting length: 20 mm
Lubrication method: Fill pilot oil with test oil Concentration: Dilute undiluted solution to 5% by mass Criteria Pass: ○ Cutting torque: 2.40 N · m or less Fail: × Cutting torque:> 2.40 N · m
アミン系殺菌剤：ジシクロヘキシルアミン
ポリオキシアルキレングリコールA：
ポリオキシエチレン(POE)ポリオキシプロピレン(POP)ブロックポリマー
（化学構造は分子鎖中央にPOP鎖を有し、その両端にPOE鎖を有する。）
ポリオキシプロピレン鎖部分の数平均分子量：1750
ポリオキシエチレン鎖の占める割合：10質量％
凝固点：−30℃、
曇点（1質量％水溶液）：24℃、
粘度（40℃）：180 mPa・s
ポリオキシアルキレングリコールB：
ポリオキシエチレンポリオキシプロピレングリコール
数平均分子量：2500、
ポリオキシエチレン鎖の占める割合：約28質量％
曇点（1質量％水溶液）：43.2℃、
動粘度（40℃）：190 mm2/s
Amine fungicide: Dicyclohexylamine polyoxyalkylene glycol A:
Polyoxyethylene (POE) polyoxypropylene (POP) block polymer (chemical structure has a POP chain at the center of the molecular chain and POE chains at both ends)
Number average molecular weight of polyoxypropylene chain moiety: 1750
Ratio of polyoxyethylene chain: 10% by mass
Freezing point: -30 ° C
Cloud point (1% by weight aqueous solution): 24 ° C
Viscosity (40 ° C): 180 mPa · s
Polyoxyalkylene glycol B:
Polyoxyethylene polyoxypropylene glycol Number average molecular weight: 2500,
Ratio of polyoxyethylene chain: about 28% by mass
Cloud point (1% by weight aqueous solution): 43.2 ° C
Kinematic viscosity (40 ° C): 190 mm 2 / s
成分（Ａ）〜（Ｄ）又は（Ａ）〜（Ｅ）を含む本発明の実施例１〜１０の油剤は、切削性、原液及び希釈液の安定性に優れ、かつ耐汚れ性に優れている。
これに対して、成分（Ｂ）を含まない比較例１及び１０の油剤は、切削性及び耐汚れ性が劣っている。
成分（Ｃ）を含まない比較例２、４、６、８及び９の油剤は耐汚れ性が劣っている。
成分（Ｄ）を含まない比較例３、５及び７の油剤は原液及び希釈液の外観が劣り、耐汚れ性も劣っている。また、希釈液が不安定であり、切削性の評価はできなかった。
The oil agents of Examples 1 to 10 of the present invention containing the components (A) to (D) or (A) to (E) are excellent in machinability, stability of the stock solution and diluent, and excellent in stain resistance. Yes.
On the other hand, the oil agents of Comparative Examples 1 and 10 that do not contain the component (B) are inferior in machinability and stain resistance.
The oils of Comparative Examples 2, 4, 6, 8, and 9 that do not contain the component (C) have poor stain resistance.
The oil agents of Comparative Examples 3, 5, and 7 that do not contain the component (D) are poor in appearance of the stock solution and the diluted solution, and inferior in stain resistance. Further, the diluted solution was unstable, and the machinability could not be evaluated.
Claims (8)
（Ａ）水又は水と基油の混合物、
（Ｂ）炭素数８〜２２の脂肪族カルボン酸、炭素数１０〜２２のヒドロキシ脂肪族カルボン酸及び前記ヒドロキシ脂肪族カルボン酸の縮合物からなる群から選ばれる少なくとも１種、
（Ｃ）炭素数２〜８のヒドロキシ脂肪族カルボン酸、及び
（Ｄ）炭素数２〜１０のアルカノールアミン。 A water-soluble metalworking fluid containing the following components and having a pH (5% by mass aqueous solution) of 8.5 to 10.5.
(A) water or a mixture of water and base oil,
(B) at least one selected from the group consisting of an aliphatic carboxylic acid having 8 to 22 carbon atoms, a hydroxy aliphatic carboxylic acid having 10 to 22 carbon atoms, and a condensate of the hydroxy aliphatic carboxylic acid,
(C) C2-C8 hydroxy aliphatic carboxylic acid, and (D) C2-C10 alkanolamine.
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