JP7398821B2 - water-based metalworking fluid - Google Patents
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- 239000012530 fluid Substances 0.000 title claims description 76
- 238000005555 metalworking Methods 0.000 title claims description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 24
- 229910001437 manganese ion Inorganic materials 0.000 claims description 27
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 20
- 239000000194 fatty acid Substances 0.000 claims description 20
- 229930195729 fatty acid Natural products 0.000 claims description 20
- 150000004665 fatty acids Chemical class 0.000 claims description 20
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 11
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 claims description 10
- 150000001991 dicarboxylic acids Chemical class 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 description 17
- 239000002184 metal Substances 0.000 description 17
- 238000005520 cutting process Methods 0.000 description 14
- WAEMQWOKJMHJLA-UHFFFAOYSA-N Manganese(2+) Chemical compound [Mn+2] WAEMQWOKJMHJLA-UHFFFAOYSA-N 0.000 description 10
- 125000004432 carbon atom Chemical group C* 0.000 description 10
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 10
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 9
- 241000196324 Embryophyta Species 0.000 description 6
- 239000007769 metal material Substances 0.000 description 6
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 6
- 230000002265 prevention Effects 0.000 description 6
- 239000002585 base Substances 0.000 description 5
- 150000002696 manganese Chemical class 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 235000019198 oils Nutrition 0.000 description 5
- 150000004671 saturated fatty acids Chemical class 0.000 description 5
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 4
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 4
- -1 manganese acetate Chemical class 0.000 description 4
- 239000004094 surface-active agent Substances 0.000 description 4
- 239000005635 Caprylic acid (CAS 124-07-2) Substances 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 229910052783 alkali metal Inorganic materials 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 229960002446 octanoic acid Drugs 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 2
- 239000004359 castor oil Substances 0.000 description 2
- 235000019438 castor oil Nutrition 0.000 description 2
- GHVNFZFCNZKVNT-UHFFFAOYSA-N decanoic acid Chemical compound CCCCCCCCCC(O)=O GHVNFZFCNZKVNT-UHFFFAOYSA-N 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 2
- 235000011187 glycerol Nutrition 0.000 description 2
- 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 description 2
- MNWFXJYAOYHMED-UHFFFAOYSA-N heptanoic acid Chemical compound CCCCCCC(O)=O MNWFXJYAOYHMED-UHFFFAOYSA-N 0.000 description 2
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 2
- 150000007529 inorganic bases Chemical class 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 description 2
- FBUKVWPVBMHYJY-UHFFFAOYSA-N nonanoic acid Chemical compound CCCCCCCCC(O)=O FBUKVWPVBMHYJY-UHFFFAOYSA-N 0.000 description 2
- WLJVNTCWHIRURA-UHFFFAOYSA-N pimelic acid Chemical compound OC(=O)CCCCCC(O)=O WLJVNTCWHIRURA-UHFFFAOYSA-N 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 description 2
- TYFQFVWCELRYAO-UHFFFAOYSA-N suberic acid Chemical compound OC(=O)CCCCCCC(O)=O TYFQFVWCELRYAO-UHFFFAOYSA-N 0.000 description 2
- ZDPHROOEEOARMN-UHFFFAOYSA-N undecanoic acid Chemical compound CCCCCCCCCCC(O)=O ZDPHROOEEOARMN-UHFFFAOYSA-N 0.000 description 2
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000005632 Capric acid (CAS 334-48-5) Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 239000005639 Lauric acid Substances 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 239000005643 Pelargonic acid Substances 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229910000288 alkali metal carbonate Inorganic materials 0.000 description 1
- 150000008041 alkali metal carbonates Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000003240 coconut oil Substances 0.000 description 1
- 235000019864 coconut oil Nutrition 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000002173 cutting fluid Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- WMOSTDJFFWYKNF-UHFFFAOYSA-L hydrogen carbonate;manganese(2+) Chemical compound [Mn+2].OC([O-])=O.OC([O-])=O WMOSTDJFFWYKNF-UHFFFAOYSA-L 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 229940071125 manganese acetate Drugs 0.000 description 1
- 239000011656 manganese carbonate Substances 0.000 description 1
- 235000006748 manganese carbonate Nutrition 0.000 description 1
- 229940093474 manganese carbonate Drugs 0.000 description 1
- IPJKJLXEVHOKSE-UHFFFAOYSA-L manganese dihydroxide Chemical compound [OH-].[OH-].[Mn+2] IPJKJLXEVHOKSE-UHFFFAOYSA-L 0.000 description 1
- 229940099596 manganese sulfate Drugs 0.000 description 1
- 239000011702 manganese sulphate Substances 0.000 description 1
- 235000007079 manganese sulphate Nutrition 0.000 description 1
- UOGMEBQRZBEZQT-UHFFFAOYSA-L manganese(2+);diacetate Chemical compound [Mn+2].CC([O-])=O.CC([O-])=O UOGMEBQRZBEZQT-UHFFFAOYSA-L 0.000 description 1
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(2+);dinitrate Chemical compound [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 description 1
- 229910000016 manganese(II) carbonate Inorganic materials 0.000 description 1
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 description 1
- XMWCXZJXESXBBY-UHFFFAOYSA-L manganese(ii) carbonate Chemical compound [Mn+2].[O-]C([O-])=O XMWCXZJXESXBBY-UHFFFAOYSA-L 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
- 235000015497 potassium bicarbonate Nutrition 0.000 description 1
- 239000011736 potassium bicarbonate Substances 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 235000011181 potassium carbonates Nutrition 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 229940086066 potassium hydrogencarbonate Drugs 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 102200082816 rs34868397 Human genes 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000012756 surface treatment agent Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
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- Lubricants (AREA)
Description
本発明は、水性金属加工液に関する。 The present invention relates to aqueous metalworking fluids.
自動車や電子機器などに用いられる各種金属製品又は金属部品は、切削などの加工が施されることによって製造されている。切削時には、金属材料と切削工具との摩擦、及び摩擦による熱が原因となって、金属製品の表面が粗くなるおそれがある。よって、かかる品質の劣化を抑制するために、金属加工液が用いられている。切削時の金属加工液の機能としては、金属材料及び切削工具への潤滑性の付与や、これらの冷却が挙げられる。 Various metal products or metal parts used in automobiles, electronic devices, etc. are manufactured through processing such as cutting. During cutting, the surface of the metal product may become rough due to friction between the metal material and the cutting tool and heat generated by the friction. Therefore, metal working fluids are used to suppress such quality deterioration. Functions of metal working fluid during cutting include providing lubricity to metal materials and cutting tools, and cooling them.
従来、金属加工液としては、水と分離する油性金属加工液と、水との相溶性を有する水性金属加工液とが知られている。このうち、水性金属加工液の使用は、環境面や廃棄処理のし易さなどの観点から好適である。例えば、特許文献１及び特許文献２では、脂肪酸と、炭酸塩や界面活性剤とを配合した水性金属加工液が提案されている。 Conventionally, known metalworking fluids include oil-based metalworking fluids that separate from water and aqueous metalworking fluids that are compatible with water. Among these, the use of aqueous metal working fluids is preferable from the viewpoints of environment and ease of disposal. For example, Patent Document 1 and Patent Document 2 propose an aqueous metalworking fluid containing a fatty acid, a carbonate, and a surfactant.
ところで、従来、油性金属加工液の性能向上のための検討はさかんになされているが、水性金属加工液の検討は十分になされているとは言い難い。このため、従来の水性金属加工液は、潤滑性が十分であるとは言い難い。そしてこのことは、各企業などが、油性金属加工液から水性金属加工液へのシフトを敬遠する原因となり得る。 Incidentally, although many studies have been made to improve the performance of oil-based metalworking fluids, it cannot be said that sufficient studies have been made on water-based metalworking fluids. For this reason, it is difficult to say that conventional aqueous metalworking fluids have sufficient lubricity. This may cause companies to avoid shifting from oil-based metalworking fluids to water-based metalworking fluids.
上記事情に鑑み、本発明は、潤滑性に優れる水性金属加工液を提供することを課題とする。 In view of the above circumstances, an object of the present invention is to provide an aqueous metalworking fluid with excellent lubricity.
本発明に係る水性金属加工液は、脂肪酸と、マンガンイオンを含む水とを含む。 The aqueous metalworking fluid according to the present invention contains fatty acids and water containing manganese ions.
斯かる構成によれば、脂肪酸にマンガンイオンを含む水が配合されることによって、潤滑性に優れるものとなる。 According to such a configuration, water containing manganese ions is blended with the fatty acid, resulting in excellent lubricity.
また、本発明に係る水性金属加工液は、好ましくは、前記マンガンイオンの濃度が０．１ｍｇ／Ｌ以上である。 Further, the aqueous metalworking fluid according to the present invention preferably has a concentration of manganese ions of 0.1 mg/L or more.
斯かる構成によれば、マンガンイオンの濃度が０．１ｍｇ／Ｌ以上であることによって、潤滑性により優れたものとなる。 According to such a configuration, since the concentration of manganese ions is 0.1 mg/L or more, the lubricity is more excellent.
また、本発明に係る水性金属加工液は、好ましくは、ジカルボン酸をさらに含む。 Moreover, the aqueous metalworking fluid according to the present invention preferably further contains a dicarboxylic acid.
斯かる構成によれば、ジカルボン酸を含むことによって、切削時などに金属材料に膜を形成し易くなり、潤滑性にさらに優れるものとなる。 According to such a configuration, by including dicarboxylic acid, it becomes easier to form a film on the metal material during cutting, etc., and the lubricity is further improved.
また、本発明に係る水性金属加工液は、好ましくは、前記ジカルボン酸が、セバシン酸である。 Further, in the aqueous metalworking fluid according to the present invention, preferably, the dicarboxylic acid is sebacic acid.
斯かる構成によれば、セバシン酸を含むことによって、切削時などに金属材料に膜をより形成し易くなり、潤滑性により一層優れるものとなる。 According to such a configuration, by including sebacic acid, it becomes easier to form a film on the metal material during cutting, etc., and the lubricity becomes even more excellent.
また、本発明に係る水性金属加工液は、好ましくは、前記脂肪酸及び前記ジカルボン酸が、植物由来である。 Further, in the aqueous metalworking fluid according to the present invention, preferably the fatty acid and the dicarboxylic acid are derived from plants.
斯かる構成によれば、脂肪酸及びジカルボン酸が植物由来であることによって、廃棄処理し易く、環境への負荷を低減可能なものとなる。 According to such a configuration, since the fatty acids and dicarboxylic acids are derived from plants, they can be easily disposed of and the load on the environment can be reduced.
また、本発明に係る水性金属加工液は、好ましくは、表面張力が４０ｍＮ／ｍ以上である。
Further, the aqueous metalworking fluid according to the present invention preferably has a surface tension of 40 mN /m or more.
斯かる構成によれば、表面張力が４０ｍＮ／ｍ以上であることによって、切削時などの冷却性に優れたものとなる。
According to such a configuration, since the surface tension is 40 mN /m or more, the cooling performance during cutting etc. is excellent.
以上の通り、本発明によれば、潤滑性に優れる水性金属加工液が提供される。 As described above, according to the present invention, an aqueous metalworking fluid with excellent lubricity is provided.
以下、一実施形態に係る水性金属加工液について説明する。 Hereinafter, an aqueous metalworking fluid according to one embodiment will be described.
本実施形態の水性金属加工液は、脂肪酸と、ジカルボン酸と、マンガンイオンを含む水（以下、マンガンイオン含有水）と、塩基と、アルコールとを含む。 The aqueous metalworking fluid of this embodiment contains fatty acids, dicarboxylic acids, water containing manganese ions (hereinafter referred to as manganese ion-containing water), a base, and alcohol.
脂肪酸は、炭素数６～２４の脂肪酸であることが好ましく、炭素数６～２０の脂肪酸であることがより好ましい。これによって、水性金属加工液が潤滑性に優れるものとなる。なお、水性金属加工液は、脂肪酸を１種単独で又は２種以上を含んでいてもよい。 The fatty acid preferably has 6 to 24 carbon atoms, more preferably 6 to 20 carbon atoms. This allows the aqueous metalworking fluid to have excellent lubricity. Note that the aqueous metalworking fluid may contain one type of fatty acid alone or two or more types of fatty acids.
脂肪酸は、飽和脂肪酸であることが好ましく、炭素数６～１２の飽和脂肪酸であることがより好ましく、炭素数８～１２の飽和脂肪酸であってもよく、炭素数６～１０の飽和脂肪酸であってもよい。これによって、脂肪酸が水となじみ易くなる（混ざりやすくなる）。より具体的には、飽和脂肪酸としては、カプロン酸、エナント酸、カプリル酸、ペラルゴン酸、カプリン酸、ウンデシル酸、ラウリン酸などが好ましい。 The fatty acid is preferably a saturated fatty acid, more preferably a saturated fatty acid having 6 to 12 carbon atoms, may be a saturated fatty acid having 8 to 12 carbon atoms, and may be a saturated fatty acid having 6 to 10 carbon atoms. It's okay. This makes fatty acids more compatible with water (easier to mix). More specifically, as the saturated fatty acid, caproic acid, enanthic acid, caprylic acid, pelargonic acid, capric acid, undecylic acid, lauric acid, etc. are preferable.
脂肪酸は、生物由来であることが好ましく、植物由来であることがより好ましい。植物由来の脂肪酸としては、ヤシ油由来のカプリル酸が好ましい。 The fatty acid is preferably of biological origin, more preferably of plant origin. As the plant-derived fatty acid, caprylic acid derived from coconut oil is preferred.
水性金属加工液の総質量に対する全ての脂肪酸の含有量は、４～１１質量％であることが好ましく、３～８質量％であることがより好ましい。 The content of all fatty acids relative to the total weight of the aqueous metalworking fluid is preferably from 4 to 11% by weight, more preferably from 3 to 8% by weight.
ジカルボン酸は、脂肪族ジカルボン酸であることが好ましい。また、脂肪族ジカルボン酸は、炭素数２～１０であることが好ましく、炭素数４～１０であることがより好ましく、炭素数６～１０であることがさらに好ましく、炭素数８～１０であることがより一層好ましい。より具体的には、ジカルボン酸は、シュウ酸、マロン酸、コハク酸、グルタル酸、アジピン酸、ピメリン酸、スベリン酸、アゼライン酸、セバシン酸からなる群より選択される１種以上であることが好ましい。これらのなかでも、セバシン酸が好ましい。これによって、水性加工液が、金属材料の表面に膜を形成し易くなり、潤滑性により優れるものとなる。 Preferably, the dicarboxylic acid is an aliphatic dicarboxylic acid. The aliphatic dicarboxylic acid preferably has 2 to 10 carbon atoms, more preferably 4 to 10 carbon atoms, even more preferably 6 to 10 carbon atoms, and has 8 to 10 carbon atoms. It is even more preferable. More specifically, the dicarboxylic acid is one or more selected from the group consisting of oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, and sebacic acid. preferable. Among these, sebacic acid is preferred. This makes it easier for the aqueous machining fluid to form a film on the surface of the metal material, resulting in better lubricity.
ジカルボン酸は、生物由来であることが好ましく、植物由来であることがより好ましく、ヒマシ油の分解物であることがさらに好ましい。 The dicarboxylic acid is preferably of biological origin, more preferably of plant origin, and even more preferably a decomposition product of castor oil.
水性金属加工液の総質量に対するジカルボン酸の含有量は、１～８質量％であることが好ましく、１～５質量％であることがより好ましい。 The content of dicarboxylic acid relative to the total mass of the aqueous metalworking fluid is preferably 1 to 8% by mass, more preferably 1 to 5% by mass.
マンガンイオン含有水は、二価のマンガンイオンを含むことが好ましい。これによって、水性金属加工液が防錆性及び潤滑性により優れるものとなる。水性金属加工液がマンガンイオン含有水を含むことによって防錆性や潤滑性に優れるものとなる理由は定かではないが、マンガンイオンが金属材料と脂肪酸との間で触媒的に作用し、水性金属加工液が防錆性や潤滑性を発揮すると推測される。 It is preferable that the manganese ion-containing water contains divalent manganese ions. This makes the aqueous metalworking fluid more excellent in rust prevention and lubricity. It is not clear why water-based metalworking fluids have superior rust prevention and lubricity when they contain manganese ion-containing water, but manganese ions act catalytically between metal materials and fatty acids, It is assumed that the machining fluid exhibits rust prevention and lubrication properties.
二価のマンガンイオンは、炭酸マンガン、重炭酸マンガン、水酸化マンガン、硫酸マンガン、硝酸マンガンなどの無機系マンガン塩に由来するものであることが好ましい。なお、二価のマンガンは、酢酸マンガンなどの有機系マンガン塩に由来するものであってもよいが、水性金属加工液の廃棄処理の観点から、無機系マンガン塩に由来するものであることが好ましい。また、二価のマンガンイオンは、ハロゲン化マンガン塩に由来するものであってもよいが、防錆性の観点から、ハロゲン化マンガン塩に由来するものでないことが好ましい。 The divalent manganese ions are preferably derived from inorganic manganese salts such as manganese carbonate, manganese bicarbonate, manganese hydroxide, manganese sulfate, and manganese nitrate. Note that divalent manganese may be derived from organic manganese salts such as manganese acetate, but from the viewpoint of disposal of aqueous metalworking fluids, it is preferable that it is derived from inorganic manganese salts. preferable. Further, the divalent manganese ion may be derived from a halogenated manganese salt, but from the viewpoint of rust prevention, it is preferably not derived from a halogenated manganese salt.
マンガンイオン含有水におけるマンガンイオンの濃度は、０．０５ｍｇ／ｍＬ以上であることが好ましく、０．１ｍｇ／ｍＬ以上であることがより好ましい。 The concentration of manganese ions in the manganese ion-containing water is preferably 0.05 mg/mL or more, more preferably 0.1 mg/mL or more.
水性金属加工液の総質量に対するマンガンイオン含有水の含有量は、７０質量％以上であることが好ましく、８０質量％以上であることがより好ましい。 The content of manganese ion-containing water relative to the total mass of the aqueous metalworking fluid is preferably 70% by mass or more, more preferably 80% by mass or more.
塩基は、無機系の塩基であることが好ましい。無機系の塩基としては、例えば、炭酸ナトリウムや炭酸カリウムなどのアルカリ金属の炭酸塩、炭酸水素ナトリウムや炭酸水素カリウムなどのアルカリ金属の重炭酸塩、水酸化ナトリウムや水酸化カリウムなどのアルカリ金属の水酸化物が挙げられる。これらのなかでも、アルカリ金属の重炭酸塩とアルカリ金属の水酸化物とが併用されることが好ましく、炭酸水素ナトリウムと水酸化カリウムとが併用されることがより好ましい。特に、アルカリ金属の水酸化物がカリウム塩たる水酸化カリウムであることによって、脂肪酸やジカルボン酸などの有機酸と、マンガンイオン含有水との相溶性が向上し、水性金属加工液においてこれらの分離が抑制される。言い換えれば、水性金属加工液が、均一な状態となる。そしてこれによって、水性金属加工液が、金属製品や金属部品の表面にわたって（全体的に）、防錆性や潤滑性などの機能を発揮しやすくなる。 The base is preferably an inorganic base. Examples of inorganic bases include alkali metal carbonates such as sodium carbonate and potassium carbonate, alkali metal bicarbonates such as sodium hydrogen carbonate and potassium hydrogen carbonate, and alkali metal bicarbonates such as sodium hydroxide and potassium hydroxide. Examples include hydroxides. Among these, it is preferable to use an alkali metal bicarbonate and an alkali metal hydroxide in combination, and it is more preferable to use a combination of sodium hydrogen carbonate and potassium hydroxide. In particular, since the alkali metal hydroxide is potassium hydroxide, which is a potassium salt, the compatibility of organic acids such as fatty acids and dicarboxylic acids with manganese ion-containing water is improved, and their separation in aqueous metalworking fluids is improved. is suppressed. In other words, the aqueous metalworking fluid becomes uniform. This makes it easier for the aqueous metalworking fluid to exhibit functions such as rust prevention and lubricity over the entire surface of metal products and metal parts.
塩基は、水性金属加工液に上記機能を付与する他、水性金属加工液のｐＨを７よりも大きい塩基性に調製する。よって、塩基は、水性金属加工液のｐＨが後述の所定の値となるように、水性金属加工液に含ませることができる。 The base not only imparts the above functions to the aqueous metalworking fluid, but also adjusts the pH of the aqueous metalworking fluid to a basic value of greater than 7. Therefore, the base can be included in the aqueous metal working fluid so that the pH of the aqueous metal working fluid becomes a predetermined value as described below.
アルコールは、メタノール、エタノール、イソプロパノールなどの一価のアルコールであってもよく、エチレングリコール、グリセリンなどの多価アルコールであってもよい。アルコールは、炭素数が３以下であることが好ましい。これらのなかでも、グリセリンが好ましい。これによって、水性金属加工液における、脂肪酸やジカルボン酸と、マンガンイオン含有水との分離をさらに抑制することができる。そして、延いては、水性金属加工液が、金属製品や金属部品の表面にわたって（全体的に）防錆性や潤滑性などの機能を発揮しやすくなる。なお、アルコールは、一種単独で用いられてもよく、複数種が併用されてもよい。 The alcohol may be a monohydric alcohol such as methanol, ethanol, or isopropanol, or a polyhydric alcohol such as ethylene glycol or glycerin. It is preferable that the alcohol has 3 or less carbon atoms. Among these, glycerin is preferred. Thereby, separation of fatty acids and dicarboxylic acids from manganese ion-containing water in the aqueous metalworking fluid can be further suppressed. As a result, the aqueous metalworking fluid can more easily exhibit functions such as rust prevention and lubricity over the surface of metal products and metal parts (overall). Note that alcohols may be used alone or in combination.
アルコールは、生物由来のものであることが好ましく、植物由来のものがより好ましい。 The alcohol is preferably of biological origin, more preferably of plant origin.
水性金属加工液の総質量に対するアルコールの含有量は、１～１０質量％であることが好ましい。 The content of alcohol based on the total mass of the aqueous metalworking fluid is preferably 1 to 10% by mass.
本実施形態の水性金属加工液は、マンガンイオン含有水に由来するマンガンイオンを０．１ｍｇ／Ｌ以上含む。水性金属加工液におけるマンガンイオンの濃度は、０．１５ｍｇ／Ｌ以上であることが好ましい。 The aqueous metalworking fluid of this embodiment contains 0.1 mg/L or more of manganese ions derived from manganese ion-containing water. The concentration of manganese ions in the aqueous metal working fluid is preferably 0.15 mg/L or more.
本実施形態の水性金属加工液は、ＪＩＳ Ｋ ２２３４（切削油剤）に規定されるＡ３種に分類され得るものである。具体的には、本実施形態の水性金属加工液は、透明である。また、本実施形態の水性金属加工液は、表面張力が４０ｍＮ／ｍ以上である。これによって、水性金属加工液が冷却性能に優れるものとなる。また、本実施形態の水性金属加工液は、ｐＨが８．５以上１０．５未満又は８．０以上１０．５未満である。これによって、金属製品や金属部品における錆の発生が抑制される。 The aqueous metalworking fluid of this embodiment can be classified into type A3 defined in JIS K 2234 (cutting fluid). Specifically, the aqueous metalworking fluid of this embodiment is transparent. Further, the aqueous metalworking fluid of this embodiment has a surface tension of 40 mN /m or more. This allows the aqueous metalworking fluid to have excellent cooling performance. Moreover, the pH of the aqueous metal working fluid of this embodiment is 8.5 or more and less than 10.5, or 8.0 or more and less than 10.5. This suppresses the occurrence of rust in metal products and metal parts.
また、上記のＡ３種に分類される本実施形態の水性金属加工液は、界面活性剤を実質的に含まないものである。なお、水性金属加工液は、界面活性剤を含んでいてもよいが、その総質量に対する界面活性剤の含有量は、０．０５質量％未満であることが好ましい。これによって、廃棄処理がし易く、環境面にも配慮することができる。 Moreover, the aqueous metalworking fluid of this embodiment, which is classified as the above A3 type, does not substantially contain a surfactant. Note that the aqueous metalworking fluid may contain a surfactant, but the content of the surfactant relative to the total mass is preferably less than 0.05% by mass. This makes disposal easy and environmentally friendly.
本実施形態の水性金属加工液は、油性金属加工液において汎用されている塩素、グラファイト、モリブデン、硫黄、リンなどの潤滑性を向上させるための添加剤を含まなくとも、十分な潤滑性を発揮し得る。これらの添加剤を含まない水性金属加工液は、環境面の観点から、油性金属加工液と比較して、極めて有用なものとなり得る。 The water-based metalworking fluid of this embodiment exhibits sufficient lubricity without containing additives to improve lubricity, such as chlorine, graphite, molybdenum, sulfur, and phosphorus, which are commonly used in oil-based metalworking fluids. It is possible. Aqueous metalworking fluids free of these additives can be extremely useful from an environmental standpoint compared to oil-based metalworking fluids.
本実施形態の水性金属加工液は、金属製品又は金属部品の製造における切削処理の潤滑剤又は冷却剤として好適に用いられ得る。より具体的には、本実施形態の水性金属加工液をマシニングセンタやＮＣ施盤などの加工装置を用いた切削処理に適用すると、面精度の向上など金属製品の仕上がりが良好になる。また、水性であることによって加工装置の洗浄が容易になる。さらに、作業環境が改善される。 The aqueous metalworking fluid of this embodiment can be suitably used as a lubricant or coolant for cutting processing in the production of metal products or metal parts. More specifically, when the aqueous metal working fluid of this embodiment is applied to a cutting process using a processing device such as a machining center or an NC lathe, the finish of the metal product, such as improved surface accuracy, will be improved. Additionally, being water-based makes it easier to clean processing equipment. Furthermore, the working environment is improved.
また、本実施形態の水性金属加工液は、金属製品又は金属部品の表面処理剤として用いられてもよい。具体的には、本実施形態の水性金属加工液は、金属製品における錆の発生を抑制し又は錆を落とす防錆剤として用いられてもよい。この場合、水性金属加工液は、金属製品又は金属部品に噴霧可能であることが好ましい。 Furthermore, the aqueous metalworking fluid of this embodiment may be used as a surface treatment agent for metal products or metal parts. Specifically, the aqueous metalworking fluid of this embodiment may be used as a rust preventive agent that suppresses the occurrence of rust in metal products or removes rust. In this case, the aqueous metalworking fluid is preferably capable of being sprayed onto metal products or parts.
本実施形態の水性金属加工液を適用可能な金属としては、例えば、鉄、銅、ステンレス、アルミニウム、チタン、アルミニウム合金、銅合金、はんだなどが挙げられる。 Examples of metals to which the aqueous metalworking fluid of this embodiment can be applied include iron, copper, stainless steel, aluminum, titanium, aluminum alloy, copper alloy, and solder.
以上のように、例示として一実施形態を示したが、本発明に係る水性金属加工液は、上記実施形態の構成に限定されるものではない。また、本発明に係る水性金属加工液は、上記した作用効果により限定されるものでもない。本発明に係る水性金属加工液は、本発明の要旨を逸脱しない範囲で種々の変更が可能である。 As mentioned above, although one embodiment has been shown as an example, the aqueous metal working fluid according to the present invention is not limited to the configuration of the above embodiment. Further, the aqueous metalworking fluid according to the present invention is not limited to the above-mentioned effects. The aqueous metalworking fluid according to the present invention can be modified in various ways without departing from the gist of the present invention.
以下、実施例により本発明をさらに説明するが、本発明は、これらに限定されるものではない。 EXAMPLES Hereinafter, the present invention will be further explained with reference to Examples, but the present invention is not limited thereto.
［実施例１］
表１に示す配合割合で、脂肪酸としてカプリル酸と、ジカルボン酸（直鎖ジカルボン酸でありヒマシ油の分解物）と、マンガンイオン含有水とを混合し、アルコールと塩基とを用いて均一化し、水性金属加工液（ｐＨ８．０以上）を調製した。
[Example 1]
Caprylic acid as a fatty acid, dicarboxylic acid (a linear dicarboxylic acid and a decomposition product of castor oil), and water containing manganese ions are mixed in the proportions shown in Table 1, and the mixture is homogenized using alcohol and a base. An aqueous metalworking fluid (pH 8.0 or higher) was prepared.
［比較例１］
マンガンイオン含有水を水道水に変更した以外は、実施例１と同様にして水性金属加工液を調製した。
[Comparative example 1]
An aqueous metalworking fluid was prepared in the same manner as in Example 1, except that tap water was used instead of manganese ion-containing water.
［評価］
上記の水性金属加工液を用いてＳ４５Ｃ製のワークを切削し、円筒状の穴を形成した。各水性金属加工液を用いた場合の、切削時の異音の有無、及び、加工面の外観について評価した。結果は、表２、並びに、図１及び図２に示したとおりである。
[evaluation]
A workpiece made of S45C was cut using the above water-based metal working fluid to form a cylindrical hole. When each aqueous metal working fluid was used, the presence or absence of abnormal noise during cutting and the appearance of the machined surface were evaluated. The results are as shown in Table 2 and FIGS. 1 and 2.
表２、図１～２に示したように、マンガンイオンの有無によって、加工面の品質に顕著な差が認められた。具体的には、マンガンイオンを含有する実施例１の水性金属加工液を用いた場合、切削時の異音が低減され、切削後の加工面の品質が良好であった。 As shown in Table 2 and Figures 1 and 2, significant differences were observed in the quality of the machined surface depending on the presence or absence of manganese ions. Specifically, when the aqueous metal working fluid of Example 1 containing manganese ions was used, abnormal noise during cutting was reduced and the quality of the machined surface after cutting was good.
Claims (5)
ｐＨ８．０以上である、水性金属加工液。 Contains fatty acids, dicarboxylic acids, water containing manganese ions , and alcohol ,
An aqueous metalworking fluid having a pH of 8.0 or higher .
The aqueous metalworking fluid according to any one of claims 1 to 4 , having a surface tension of 40 mN /m or more.
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