JP2019043989A - Plunger lubricant composition - Google Patents
Plunger lubricant composition Download PDFInfo
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- JP2019043989A JP2019043989A JP2017165136A JP2017165136A JP2019043989A JP 2019043989 A JP2019043989 A JP 2019043989A JP 2017165136 A JP2017165136 A JP 2017165136A JP 2017165136 A JP2017165136 A JP 2017165136A JP 2019043989 A JP2019043989 A JP 2019043989A
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- lubricant composition
- oil
- lubricant
- plunger
- barium
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- 239000000314 lubricant Substances 0.000 title claims abstract description 69
- 239000000203 mixture Substances 0.000 title claims abstract description 43
- 239000002199 base oil Substances 0.000 claims abstract description 11
- 229910052712 strontium Inorganic materials 0.000 claims abstract description 8
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052788 barium Inorganic materials 0.000 claims abstract description 7
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims abstract description 7
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 49
- 239000003921 oil Substances 0.000 claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000010439 graphite Substances 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 150000003467 sulfuric acid derivatives Chemical class 0.000 claims description 5
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims description 4
- 150000001805 chlorine compounds Chemical class 0.000 claims description 3
- 150000002823 nitrates Chemical class 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 abstract description 10
- 238000002347 injection Methods 0.000 abstract description 9
- 239000007924 injection Substances 0.000 abstract description 9
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 abstract description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract description 3
- 229910002651 NO3 Inorganic materials 0.000 abstract description 3
- 230000006866 deterioration Effects 0.000 abstract description 3
- 239000000243 solution Substances 0.000 abstract description 2
- 230000001747 exhibiting effect Effects 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 20
- 239000007787 solid Substances 0.000 description 18
- 235000019198 oils Nutrition 0.000 description 15
- 239000000126 substance Substances 0.000 description 10
- 239000000454 talc Substances 0.000 description 8
- 229910052623 talc Inorganic materials 0.000 description 8
- 239000010445 mica Substances 0.000 description 7
- 229910052618 mica group Inorganic materials 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 5
- 238000011109 contamination Methods 0.000 description 5
- 238000004512 die casting Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- UBXAKNTVXQMEAG-UHFFFAOYSA-L strontium sulfate Chemical compound [Sr+2].[O-]S([O-])(=O)=O UBXAKNTVXQMEAG-UHFFFAOYSA-L 0.000 description 5
- 240000008415 Lactuca sativa Species 0.000 description 4
- 239000002480 mineral oil Substances 0.000 description 4
- 235000010446 mineral oil Nutrition 0.000 description 4
- 235000012045 salad Nutrition 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 239000004094 surface-active agent Substances 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 229910001626 barium chloride Inorganic materials 0.000 description 3
- IWOUKMZUPDVPGQ-UHFFFAOYSA-N barium nitrate Inorganic materials [Ba+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O IWOUKMZUPDVPGQ-UHFFFAOYSA-N 0.000 description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 235000011116 calcium hydroxide Nutrition 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 244000068988 Glycine max Species 0.000 description 2
- 235000010469 Glycine max Nutrition 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 description 2
- AGXUVMPSUKZYDT-UHFFFAOYSA-L barium(2+);octadecanoate Chemical compound [Ba+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O AGXUVMPSUKZYDT-UHFFFAOYSA-L 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 239000003240 coconut oil Substances 0.000 description 2
- 235000019864 coconut oil Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003925 fat Substances 0.000 description 2
- 235000019197 fats Nutrition 0.000 description 2
- 239000000383 hazardous chemical Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 239000005069 Extreme pressure additive Substances 0.000 description 1
- 235000019483 Peanut oil Nutrition 0.000 description 1
- 235000019484 Rapeseed oil Nutrition 0.000 description 1
- HAAAPOMWYDKTOR-UHFFFAOYSA-J S(=O)(=O)([O-])[O-].[Ca+2].[Mg+2].O.O.S(=O)(=O)([O-])[O-] Chemical compound S(=O)(=O)([O-])[O-].[Ca+2].[Mg+2].O.O.S(=O)(=O)([O-])[O-] HAAAPOMWYDKTOR-UHFFFAOYSA-J 0.000 description 1
- 235000019485 Safflower oil Nutrition 0.000 description 1
- 235000019486 Sunflower oil Nutrition 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- RJDOZRNNYVAULJ-UHFFFAOYSA-L [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[Si+4].[Si+4].[Si+4].[K+] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[Si+4].[Si+4].[Si+4].[K+] RJDOZRNNYVAULJ-UHFFFAOYSA-L 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 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
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000010775 animal oil Substances 0.000 description 1
- -1 antifoams Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Inorganic materials [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 1
- AYJRCSIUFZENHW-DEQYMQKBSA-L barium(2+);oxomethanediolate Chemical compound [Ba+2].[O-][14C]([O-])=O AYJRCSIUFZENHW-DEQYMQKBSA-L 0.000 description 1
- 239000010428 baryte Substances 0.000 description 1
- 229910052601 baryte Inorganic materials 0.000 description 1
- 235000015278 beef Nutrition 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052923 celestite Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 235000005687 corn oil Nutrition 0.000 description 1
- 239000002285 corn oil Substances 0.000 description 1
- 235000012343 cottonseed oil Nutrition 0.000 description 1
- 239000002385 cottonseed oil Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- YGANSGVIUGARFR-UHFFFAOYSA-N dipotassium dioxosilane oxo(oxoalumanyloxy)alumane oxygen(2-) Chemical compound [O--].[K+].[K+].O=[Si]=O.O=[Al]O[Al]=O YGANSGVIUGARFR-UHFFFAOYSA-N 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 239000008169 grapeseed oil Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 239000004006 olive oil Substances 0.000 description 1
- 235000008390 olive oil Nutrition 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000000312 peanut oil Substances 0.000 description 1
- 229910052628 phlogopite Inorganic materials 0.000 description 1
- 235000015277 pork Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000003813 safflower oil Substances 0.000 description 1
- 235000005713 safflower oil Nutrition 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002600 sunflower oil Substances 0.000 description 1
- 239000003760 tallow Substances 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 239000010497 wheat germ oil Substances 0.000 description 1
Landscapes
- Lubricants (AREA)
Abstract
Description
本発明は、プランジャー潤滑剤組成物に関し、さらに詳しくは、ダイカスト鋳造等において、プランジャーチップ外周面と射出スリーブ内周面との間に塗布されるプランジャー潤滑剤組成物に関するものである。 The present invention relates to a plunger lubricant composition, and more particularly to a plunger lubricant composition which is applied between a plunger tip outer peripheral surface and an injection sleeve inner peripheral surface in die casting and the like.
従来、アルミニウム等の金属の溶融物を成形するダイカスト鋳造において、プランジャーチップ外周面と射出スリーブ内周面との摩擦を低減する目的で、潤滑剤組成物が用いられている。 Heretofore, a lubricant composition has been used for the purpose of reducing the friction between the outer peripheral surface of a plunger tip and the inner peripheral surface of an injection sleeve in die casting for forming a melt of a metal such as aluminum.
ダイカスト鋳造には、高温に加熱された金属の溶融物(溶湯)が用いられるため、これに直接触れるプランジャーチップおよび射出スリーブも高温となる。このように高温条件下では、油状の基油成分のみからなる潤滑剤組成物では潤滑性が失われやすい。 In die casting, a molten metal (molten metal) heated to a high temperature is used, so the plunger tip and the injection sleeve in direct contact with the metal also have a high temperature. Thus, under high temperature conditions, a lubricant composition consisting only of an oily base oil component tends to lose its lubricity.
一方で、ダイカスト鋳造では、プランジャーチップにより溶融金属を高速で押し出すため、プランジャーチップ外周面と射出スリーブ内周面との間の摩耗が大きくなる傾向がある。そのため、プランジャー潤滑剤組成物には高い潤滑性が要求される。 On the other hand, in die casting, since the molten metal is extruded at high speed by the plunger tip, the wear between the outer peripheral surface of the plunger tip and the inner peripheral surface of the injection sleeve tends to be large. Therefore, high lubricity is required of the plunger lubricant composition.
上記のような、高温、高速条件下での高い潤滑性を満足するため、基油に固体潤滑剤を配合して用いる場合が多い。固体潤滑剤の中でも、特に黒鉛を配合した黒鉛系潤滑剤は、耐熱性、潤滑性に優れるなどの観点から広く用いられている（特許文献１）。しかしながら、黒鉛系潤滑剤は、塗布時に射出部周辺を汚染し、作業環境を悪化させたり、鋳造品に混入し、製品を汚染したりする虞がある。これに対し、作業環境の改善等の目的から、雲母、タルク、カオリンなどの非黒色系固体潤滑剤の使用が試みられてきた（特許文献２）。 In order to satisfy the high lubricity under high temperature and high speed conditions as described above, a base oil is often used in combination with a solid lubricant. Among solid lubricants, particularly graphite-based lubricants in which graphite is blended are widely used from the viewpoint of excellent heat resistance, lubricity and the like (Patent Document 1). However, the graphite-based lubricant contaminates the periphery of the injection portion at the time of coating, which may deteriorate the working environment or may contaminate the product by contaminating the cast product. On the other hand, use of non-black solid lubricants such as mica, talc and kaolin has been attempted for the purpose of improvement of working environment and the like (Patent Document 2).
しかし、非黒色系固体潤滑剤を使用した潤滑剤組成物の多くは、黒鉛を含有する潤滑剤組成物に比べ、潤滑性に劣り、プランジャーチップのカジリや摩耗が増加する問題があった。 However, many lubricant compositions using non-black solid lubricants have inferior lubricity as compared with lubricant compositions containing graphite, and there has been a problem that galling and wear of the plunger tip increase.
本発明が解決しようとする課題は、作業環境の悪化や、製品の汚染を防止しつつ、高温、高速の条件において優れた潤滑性を有するプランジャー潤滑剤組成物を提供することにある。 The problem to be solved by the present invention is to provide a plunger lubricant composition having excellent lubricity under conditions of high temperature and high speed while preventing deterioration of the working environment and contamination of the product.
本発明に係る潤滑剤組成物は、プランジャーチップ外周面と射出スリーブ内周面との間に塗布されるプランジャー潤滑剤組成物であって、（Ａ）基油と、（Ｂ）バリウムまたはストロンチウムの硫酸塩、炭酸塩、硝酸塩または塩化物から選ばれる１種または２種以上とを含有することを要旨とする。 The lubricant composition according to the present invention is a plunger lubricant composition to be applied between the outer peripheral surface of the plunger tip and the inner peripheral surface of the injection sleeve, which comprises: (A) a base oil; The gist of the present invention is to contain one or more selected from sulfate, carbonate, nitrate and chloride of strontium.
前記（Ｂ）成分は、バリウムまたはストロンチウムの硫酸塩から選ばれる１種または２種であることが好ましく、硫酸バリウムであることがより好ましい。 The component (B) is preferably one or two selected from sulfates of barium and strontium, and more preferably barium sulfate.
潤滑剤組成物は、水を含まない油性潤滑剤であることが好ましい。 The lubricant composition is preferably a water-free oil-based lubricant.
潤滑剤組成物は、黒鉛を含有しないことが好ましい。 The lubricant composition preferably contains no graphite.
前記硫酸バリウムを、１〜５０質量％含有することが好ましい。 It is preferable to contain 1 to 50% by mass of the barium sulfate.
本発明に係る潤滑剤組成物によれば、非黒色系固体潤滑剤である（Ｂ）成分
を用いることから、作業環境の悪化や、製品の汚染を防止できるとともに、高温、高速の条件においても、優れた潤滑性を有し、プランジャーチップと射出スリーブとの摩擦を低減することができる。
According to the lubricant composition of the present invention, since the component (B), which is a non-black solid lubricant, is used, it is possible to prevent the deterioration of the working environment and the contamination of the product, and also under high temperature and high speed conditions. It has excellent lubricity and can reduce the friction between the plunger tip and the injection sleeve.
本発明に係る潤滑剤組成物（以降「本組成物」ともいう。）について詳細に説明する。 The lubricant composition according to the present invention (hereinafter also referred to as "the present composition") will be described in detail.
本発明に係る潤滑剤組成物は、（Ａ）基油を含有する。基油としては、特に限定されるものではなく、例えば、原油を蒸留して得られる留分を精製したパラフィン系、ナフテン系の精製鉱物油などに代表される鉱物油、化学的に合成されるパラフィン系、ナフテン系、オレフィン系等の炭化水素系合成油、エステル系合成油などに代表される合成油、ヤシ油、コーン油、グレープシードオイル、ココナッツオイル、綿実油、小麦胚芽油、大豆油、サフラワーオイル、オリーブオイル、ピーナッツオイル、菜種油、ヒマワリ油などに代表される植物油、牛脂、豚脂などに代表される動物油、その他の油脂などを挙げることができる。これらは、１種類を単独で用いてもよいし、２種類以上を組み合わせて用いてもよい。 The lubricant composition according to the present invention contains (A) a base oil. The base oil is not particularly limited, and, for example, mineral oil represented by paraffinic or naphthenic refined mineral oil obtained by refining a fraction obtained by distillation of crude oil, chemically synthesized Synthetic oils represented by paraffinic, naphthenic and olefinic synthetic hydrocarbons, synthetic oils represented by ester synthetic oils, coconut oil, corn oil, grape seed oil, coconut oil, cottonseed oil, wheat germ oil, soybean oil, Vegetable oils represented by safflower oil, olive oil, peanut oil, rapeseed oil, sunflower oil etc., animal oils represented by beef tallow, pork fat etc., other fats and oils etc. can be mentioned. One of these may be used alone, or two or more of these may be used in combination.
本発明に係る潤滑剤組成物は、（Ｂ）バリウムまたはストロンチウムの硫酸塩、炭酸塩、硝酸塩または塩化物から選ばれる１種または２種以上を含有する。（Ｂ）成分は、安全性の観点から、バリウムまたはストロンチウムの硫酸塩であることが好ましい。また、国内での供給のしやすさの観点からは、バリウムの硫酸塩、炭酸塩、硝酸塩または塩化物であることが好ましい。以上より、（Ｂ）成分としては、硫酸バリウムが特に好ましい。 The lubricant composition according to the present invention contains (B) at least one selected from sulfates, carbonates, nitrates and chlorides of barium or strontium. From the viewpoint of safety, the component (B) is preferably a sulfate of barium or strontium. From the viewpoint of domestic supply ease, barium sulfate, carbonate, nitrate or chloride is preferred. From the above, barium sulfate is particularly preferable as the component (B).
（Ｂ）成分は、平均粒子径が小さいものの方が潤滑性に優れる。平均粒子径としては、１０μｍ以下であることが好ましく、６μｍ以下であることがより好ましく、２μｍ以下であることが特に好ましい。平均粒子径の下限としては、二次凝集を抑制するなどの観点から０．１μｍ以上であることが好ましい。 As the component (B), one having a smaller average particle diameter is more excellent in lubricity. The average particle size is preferably 10 μm or less, more preferably 6 μm or less, and particularly preferably 2 μm or less. The lower limit of the average particle size is preferably 0.1 μm or more from the viewpoint of suppressing secondary aggregation.
硫酸バリウムおよび硫酸ストロンチウムには、天然の重晶石または天青石を粉砕したものと、化学的に合成したものとがあるが、いずれを用いてもよい。炭酸塩、硝酸塩および塩化物は、通常、化学的に合成したものである場合が多い。また、（Ｂ）成分は、分散性向上等の目的から、表面処理を施したものであってもよい。 There are two types of barium sulfate and strontium sulfate: crushed natural barite or celestite, and chemically synthesized one, and either may be used. Carbonates, nitrates and chlorides are usually often chemically synthesized. The component (B) may be subjected to surface treatment for the purpose of improving the dispersibility and the like.
（Ｂ）成分の含有量は、組成物全量に対して１〜５０質量％であることが好ましい。より好ましくは５〜３０質量％である。１質量％以上であると、潤滑性に優れる。一方、３０質量％以上加えても、さらなる潤滑性の向上が見込まれず、また、塗布性に優れるなどの性状の観点から３０質量％以下とすることが好ましい。 It is preferable that content of (B) component is 1-50 mass% with respect to the composition whole quantity. More preferably, it is 5-30 mass%. It is excellent in lubricity as it is 1 mass% or more. On the other hand, even if it is added in an amount of 30% by mass or more, no further improvement in lubricity can be expected, and it is preferably 30% by mass or less from the viewpoint of properties such as excellent coatability.
（Ｂ）成分は白色の固体潤滑剤である。非黒色系固体潤滑剤としては他に、タルク、雲母、炭酸カルシウム、水酸化カルシウムなどが挙げられるが、（Ｂ）成分は、他の非黒色潤滑剤に比べ、高温での潤滑性に優れることから、プランジャー潤滑剤組成物として好適である。 The component (B) is a white solid lubricant. Other non-black solid lubricants include talc, mica, calcium carbonate, calcium hydroxide and the like, but the component (B) has excellent lubricity at high temperatures compared to other non-black lubricants. Therefore, it is suitable as a plunger lubricant composition.
本発明に係る潤滑剤組成物は、本発明の効果を阻害しない範囲において、（Ｂ）成分以外の固体潤滑剤を含んでもよい。黒鉛、二硫化モリブデンなどの黒色の固体潤滑剤を過度に加えると作業環境の悪化や、製品を汚染する虞がある。黒色の固体潤滑剤の含有量は、汚染の許容範囲等に応じて適宜決定すればよいが、組成物全量に対して概ね３質量％以下であることが好ましい。 The lubricant composition according to the present invention may contain solid lubricants other than the component (B), as long as the effects of the present invention are not impaired. Excessive addition of a black solid lubricant such as graphite or molybdenum disulfide may deteriorate the working environment or contaminate the product. The content of the black solid lubricant may be appropriately determined in accordance with the allowable range of contamination, etc., but is preferably about 3% by mass or less with respect to the total amount of the composition.
本発明に係る潤滑剤組成物は、水を含まない油性潤滑剤として用いてもよいし、水を含む水性潤滑剤として用いてもよい。長期的な保管や潤滑性に優れるなどの観点から、油性潤滑剤として用いられることが好ましい。水を含まない油性潤滑剤とは、製造過程で意図的に水を添加しないという意味であり、製造中又は保管中に不可避的に混入する微量の水分を含む場合もある。 The lubricant composition according to the present invention may be used as an oil-free lubricant which does not contain water, or may be used as an aqueous lubricant containing water. From the viewpoint of long-term storage and excellent lubricity, it is preferably used as an oil-based lubricant. The water-free oil type lubricant means that water is not intentionally added in the production process, and may contain a trace amount of water which is inevitably mixed during production or storage.
水性潤滑剤とすると、非危険物となり、製品の汚れや発火、発煙の度合も抑えられ、現場の作業環境に優れる。水性潤滑剤とする場合、水の含有量は、特に限定されるものではないが、組成物全量に対して、９０質量％以下であることが好ましい。この際、本組成物は、エマルション型、ソリュブル型、ソリューション型のいずれの形態をとってもよい。 When used as an aqueous lubricant, it becomes a non-hazardous substance, and the degree of contamination, ignition and smoke of the product is suppressed, and the working environment in the field is excellent. In the case of using an aqueous lubricant, the content of water is not particularly limited, but is preferably 90% by mass or less with respect to the total amount of the composition. Under the present circumstances, this composition may take any form of an emulsion type, a soluble type, and a solution type.
本発明に係る潤滑剤組成物は、本発明の趣旨を逸脱しない範囲内で種々の添加剤を加えてもよい。添加剤としては、分散剤、界面活性剤、粘度指数調整剤、防腐剤、染料、香料、消泡剤、極圧添加剤、摩耗防止剤、酸化防止剤などが挙げられる。 The lubricant composition according to the present invention may be added with various additives without departing from the scope of the present invention. The additives include dispersants, surfactants, viscosity index modifiers, preservatives, dyes, flavors, antifoams, extreme pressure additives, antiwear agents, antioxidants, and the like.
実使用に際し、上記の添加剤として、分散剤または界面活性剤を加えることが好ましい。分散剤または界面活性剤の添加は任意であるが、これらを加えると、固体潤滑剤等の成分の分離、沈降を抑制でき、保存安定性に優れる。 In practical use, it is preferable to add a dispersant or surfactant as the above-mentioned additive. Although the addition of a dispersant or surfactant is optional, addition of these can suppress separation and sedimentation of components such as a solid lubricant, and is excellent in storage stability.
本発明に係る潤滑剤組成物は、耐熱性と潤滑性に優れることから、プランジャー潤滑剤組成物として好適に用いることができる。ダイカスト鋳造等のプランジャーチップおよび射出スリーブは、高温かつ高速で用いられる。本組成物は、このような過酷な条件下で用いられるプランジャー用の潤滑剤として効果的である。 The lubricant composition according to the present invention can be suitably used as a plunger lubricant composition because it is excellent in heat resistance and lubricity. Plunger tips and injection sleeves such as die casting are used at high temperature and high speed. The composition is effective as a lubricant for plungers used under such severe conditions.
以下、実施例および比較例を用いて本発明を詳細に説明する。 Hereinafter, the present invention will be described in detail using examples and comparative examples.
（潤滑剤組成物の作成）
（実施例１）
６８質量％の基油１（ＪＸＴＧエネルギー社製 スーパーオイルＮ４６０（パラフィン系鉱物油））および２０質量％のサラダ油（日清オイリオグループ社製 大豆サラダ油Ｓ）に、分散剤として１質量％のプロピレンカルボナート（キシダ化学社製）および１質量％の有機ベントナイト（ホージュン社製 エスベンＮ−４００）を加えて撹拌した。そこに、１０質量％の硫酸バリウム１を少量ずつ加えて撹拌し、潤滑剤組成物を得た。
(Preparation of lubricant composition)
Example 1
68% by mass of base oil 1 (super oil N 460 (paraffin-based mineral oil) manufactured by JXTG Energy) and 20% by mass salad oil (soybean salad oil S manufactured by Nisshin Oillio Group, Inc.) A Naert (manufactured by Kishida Chemical Co., Ltd.) and 1% by mass of organic bentonite (manufactured by Hojun Co., Ltd. Esben N-400) were added and stirred. A 10 mass% barium sulfate 1 was added thereto little by little and stirred to obtain a lubricant composition.
（実施例２〜９、比較例１〜１３）
硫酸バリウム１に替えて、表１、２に記載の固体潤滑剤を用いたこと以外は、実施例１と同様である。
(Examples 2 to 9, Comparative Examples 1 to 13)
The same as Example 1 except using the solid lubricant described in Tables 1 and 2 in place of barium sulfate 1.
（実施例１０）
基油１を５８質量％、硫酸バリウムを２０質量％としたこと以外は、実施例１と同様である。
(Example 10)
The same as Example 1 except that the base oil 1 was 58% by mass and the barium sulfate was 20% by mass.
（実施例１１）
基油１を４８質量％、硫酸バリウムを３０質量％としたこと以外は、実施例１と同様である。
(Example 11)
The same as Example 1 except that the base oil 1 was 48% by mass and the barium sulfate was 30% by mass.
（実施例１２）
７０質量％の水、１０質量％の基油２（ＪＸＴＧエネルギー社製 スーパーオイルＮ４６（パラフィン系鉱物油））、１０質量％のサラダ油（日清オイリオグループ社製 大豆サラダ油Ｓ）、５質量％の界面活性剤を混ぜ、乳化させた後、５質量％の硫酸バリウム１を少量ずつ加えて撹拌し、潤滑剤組成物を得た。
(Example 12)
70% by weight water, 10% by weight base oil 2 (JOTG Energy's Super Oil N 46 (paraffinic mineral oil)), 10% by weight salad oil (Nisshin Oillio Group's soybean salad oil S), 5% by weight The surfactant was mixed and emulsified, and then 5% by mass of barium sulfate 1 was added little by little and stirred to obtain a lubricant composition.
（比較例１４〜１６）
硫酸バリウム１に替えて、表２に記載の固体潤滑剤を用いたこと以外は、実施例１２と同様である。
(Comparative Examples 14 to 16)
Example 12 is the same as Example 12 except that the solid lubricant described in Table 2 is used instead of barium sulfate 1.
（平面摺動試験）
３．３ｍｇ／ｍ２の潤滑剤組成物を試験片（炭素工具鋼 ３０×５００×１．８ｍｍ）に塗布し、ダイス（ＳＫＤ−６１ Ｒ＝２．５ 幅２０ｍｍ）を用い、面圧８．３ＭＰａ、摺動速度４００ｍｍ／ｓｅｃ以上、摺動距離１５０ｍｍの条件下、常温および５００℃以上の高温条件で平面摺動試験を行い、摩擦係数を測定した。
(Plane sliding test)
A lubricant composition of 3.3 mg / m 2 is applied to a test piece (carbon tool steel 30 × 500 × 1.8 mm), and a die (SKD-61 R = 2.5 width 20 mm) is used to contact pressure 8. A planar sliding test was conducted under the conditions of 3 MPa, sliding speed of 400 mm / sec or more, and sliding distance of 150 mm, normal temperature and high temperature conditions of 500 ° C. or more, and the coefficient of friction was measured.
（固体潤滑剤）
・硫酸バリウム１：竹原化学工業社製 Ｗ−１（簸性硫酸バリウム） 粒子径：２．０μｍ
・硫酸バリウム２：竹原化学工業社製 Ｗ−６（簸性硫酸バリウム） 粒子径：６．０μｍ
・硫酸バリウム３：堺化学工業社製 Ｂ−３４（表面処理沈降性硫酸バリウム） 粒子径：０．３μｍ
・硫酸バリウム４：堺化学工業社製 沈降性硫酸バリウム１１０（沈降性硫酸バリウム） 粒子径：０．６μｍ
・硫酸バリウム５：堺化学工業社製 ＢＭＨ−４０（沈降性硫酸バリウム） 粒子径：５.０μｍ
・炭酸バリウム：堺化学工業社製 ＢＷ−Ｅ１ 粒子径：１．５μｍ
・硝酸バリウム：米山薬品工業社製
・塩化バリウム：米山薬品工業社製 塩化バリウム（無水）
・硫酸ストロンチウム：和光純薬工業社製
・タルク１：日本タルク社製 ＭＳ−ＫＹ 粒子径：２５．０μｍ
・タルク２：日本タルク社製 ＳＩＭＧＯＮ 粒子径：８．０μｍ
・タルク３：日本タルク社製 ＳＧ−２００ 粒子径：３．２μｍ
・雲母１：レプコ社製 ＭＫ−１００（合成雲母） 粒子径：４．０μｍ
・雲母２：レプコ社製 Ｍ−ＸＦ（白雲母） 粒子径：３．８μｍ
・雲母３：レプコ社製 Ｓ−ＸＦ（金雲母） 粒子径：３．０μｍ
・雲母４：三信鉱工社製 セリサイトＦＳＮ（絹雲母） 粒子径：４．０μｍ
・炭酸カルシウム１：白石工業社製 ｖｉｇｏｔ１５ 粒子径：０．１５μｍ
・炭酸カルシウム２：白石工業社製 ホワイトンＳＳＢ青 粒子径：１．５μｍ
・水酸化カルシウム：近藤石灰工業社製 超特号消石灰 粒子径：９．０μｍ
・硫酸カルシウム：和光純薬工業社製 硫酸カルシウム・二水和物
・硫酸マグネシウム：和光純薬工業社製 硫酸マグネシウム（無水）
・ステアリン酸バリウム：川村化成工業社製
(Solid lubricant)
-Barium sulfate 1: manufactured by Takehara Chemical Industry Co., Ltd. W-1 (polar barium sulfate) particle size: 2.0 μm
-Barium sulfate 2: W-6 manufactured by Takehara Chemical Industry Co., Ltd. (binder barium sulfate) Particle size: 6.0 μm
-Barium sulfate 3: B-34 (Surface-treated precipitated barium sulfate) manufactured by Sakai Chemical Industry Co., Ltd. Particle size: 0.3 μm
-Barium sulfate 4: manufactured by Sakai Chemical Industry Co., Ltd. Settable barium sulfate 110 (settable barium sulfate) Particle size: 0.6 μm
· Barium sulfate 5: BMH-40 (made by Sakai Chemical Industry Co., Ltd.) (Settled barium sulfate) Particle size: 5.0 μm
-Barium carbonate: BW-E1 manufactured by Sakai Chemical Industry Co., Ltd. Particle diameter: 1.5 μm
・ Barium nitrate: Yoneyama Pharmaceutical Co., Ltd. ・ Barium chloride: Yoneyama Pharmaceutical Co., Ltd. Barium chloride (anhydrous)
Strontium sulfate: manufactured by Wako Pure Chemical Industries, Ltd. Talc 1: manufactured by Nippon Talc MS-KY Particle diameter: 25.0 μm
-Talc 2: Nippon Talc's SIMGON particle diameter: 8.0 μm
-Talc 3: Nippon Talc SG-200 particle diameter: 3.2 μm
-Mica 1: MK-100 (synthetic mica) manufactured by Lepco Particle size: 4.0 μm
Mica 2: M-XF (white mica) manufactured by Lepco Particle size: 3.8 μm
Mica 3: Repco S-XF (phlogopite) particle size: 3.0 μm
-Mica 4: Sanshin Mining & Engineering Co., Ltd. Sericite FSN (Serikite) Particle size: 4.0 μm
-Calcium carbonate 1: manufactured by Shiroishi Kogyo vigot 15 particle diameter: 0.15 μm
・ Calcium carbonate 2: White stone SSB blue manufactured by Shiraishi Kogyo Co., Ltd. Particle diameter: 1.5 μm
・ Calcium hydroxide: Made by Kondo Lime Industry Co., Ltd. Super special number slaked lime Particle diameter: 9.0 μm
Calcium sulfate: manufactured by Wako Pure Chemical Industries, Ltd. calcium sulfate dihydrate Magnesium sulfate: manufactured by Wako Pure Chemical Industries, Ltd. magnesium sulfate (anhydrous)
· Barium stearate: manufactured by Kawamura Chemical Industries, Ltd.
表１〜３より、加工油等に用いられる一般的な固体潤滑剤を用いた場合、常温での摩擦係数には大きな差異はない。しかし、高温の摩擦係数では、（Ｂ）成分の固体潤滑剤を含有しない比較例１〜１６は、（Ｂ）成分を含有する実施例に劣る結果となった。本実施例においては、高速での潤滑性能を確認するため、摺動速度４００ｍｍ／ｓｅｃ以上の条件で平面摺動試験を行った。低速で同様の試験を行うと、（Ｂ）成分の固体潤滑剤を含有しない比較例１〜１６であっても、本実施例のような摩擦係数の差異は見られない。 From Tables 1 to 3, when a general solid lubricant used for processing oil or the like is used, there is no big difference in the friction coefficient at normal temperature. However, in the coefficient of friction at high temperature, Comparative Examples 1 to 16 which do not contain the solid lubricant of the component (B) resulted in inferiority to the examples containing the component (B). In the present example, in order to confirm the lubricating performance at high speed, a planar sliding test was conducted under the conditions of a sliding speed of 400 mm / sec or more. When the same test is performed at low speed, even in Comparative Examples 1 to 16 which do not contain the solid lubricant of the component (B), the difference in the friction coefficient as in this example is not observed.
一方、（Ｂ）成分を含有する実施例によれば、いずれも高温条件下で良好な潤滑性が得られる。特に硫酸バリウムは、潤滑性に優れ、粉砕品である簸性硫酸バリウム（実施例１、２）であっても、合成品である沈降性硫酸バリウム（実施例３〜５）であっても良好な潤滑性が得られる。また、表面処理を施したもの（実施例３）であっても用いることができる。（Ｂ）成分としては、硫酸塩（実施例１）、炭酸塩（実施例６）、硝酸塩（実施例７）、塩化物（実施例８）のいずれでも良好な潤滑性が得られる。特に硫酸塩、炭酸塩は潤滑性に優れる。また、ストロンチウムの塩（実施例９）であってもバリウムの塩と同様の効果が得られる。これに対して、ステアリン酸バリウム（比較例１３）のような有機酸の塩では、高温での潤滑性が優れない。これは無機塩に比べ耐熱性が劣り、高温条件下で固体潤滑剤として機能しなかったためと推察される。実施例１〜２、および３〜５より、（Ｂ）成分としては、平均粒子径が小さい方が潤滑性に優れる傾向がみられる。 On the other hand, according to the examples containing the component (B), good lubricity can be obtained under high temperature conditions. In particular, barium sulfate is excellent in lubricity, and it is preferable whether it is ground barium sulfate (Examples 1 and 2) or synthetic barium sulfate (Examples 3 to 5). Lubricity is obtained. Moreover, it can be used even if it has been subjected to surface treatment (Example 3). As the component (B), good lubricity can be obtained with any of sulfate (example 1), carbonate (example 6), nitrate (example 7) and chloride (example 8). In particular, sulfates and carbonates are excellent in lubricity. Further, the same effect as the salt of barium can be obtained even with the salt of strontium (Example 9). On the other hand, in the case of salts of organic acids such as barium stearate (Comparative Example 13), the lubricity at high temperatures is not excellent. This is presumed to be because the heat resistance is inferior to that of the inorganic salt and does not function as a solid lubricant under high temperature conditions. From Examples 1 to 2 and 3 to 5, as the component (B), the smaller the average particle diameter, the better the lubricity tends to be.
表３より、（Ｂ）成分を含有する本発明にかかる潤滑剤組成物は、水を含む水性潤滑剤としても用いることができる。水性潤滑剤とすると非危険物となり、製品の汚れや発火、発煙の度合も抑えられ、現場の作業環境に優れる。一方、実施例１〜１１のように油性潤滑剤として用いると、長期的な保管や潤滑性に優れる。 From Table 3, the lubricant composition according to the present invention containing the component (B) can also be used as an aqueous lubricant containing water. When used as an aqueous lubricant, it becomes a non-hazardous substance, and the degree of contamination, ignition, and smoke of the product is suppressed, and the working environment in the field is excellent. On the other hand, when it uses as an oil-based lubricant like Examples 1-11, it is excellent in long-term storage and lubricity.
以上、本発明の実施形態・実施例について説明したが、本発明は上記実施形態・実施例に何ら限定されるものではなく、本発明の趣旨を逸脱しない範囲内で種々の改変が可能である。 As mentioned above, although embodiment and Example of this invention were described, this invention is not limited at all to the said embodiment and Example, A various change is possible within the range which does not deviate from the meaning of this invention .
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| JPS54123104A (en) * | 1978-03-16 | 1979-09-25 | Aichi Steel Works Ltd | Lubricator for plastic processing |
| JPS54123105A (en) * | 1978-03-16 | 1979-09-25 | Aichi Steel Works Ltd | Lubricator for plastic processing |
| JPH1095990A (en) * | 1996-09-26 | 1998-04-14 | Tokai Univ | Solid lubricant |
| JP2004269883A (en) * | 2003-03-04 | 2004-09-30 | Omg Americas Inc | Lubricant composition containing such highly basic, amorphous alkaline-earth metal as metal protective agent |
| JP2005171111A (en) * | 2003-12-12 | 2005-06-30 | Oiles Ind Co Ltd | Solid lubricant and slide member |
| JP2005336364A (en) * | 2004-05-28 | 2005-12-08 | National Institute Of Advanced Industrial & Technology | Self-lubricating composite material and method for producing the same |
| JP2006265081A (en) * | 2005-03-25 | 2006-10-05 | National Institute Of Advanced Industrial & Technology | Selflubricating composite material and its producing method |
| JP2007231207A (en) * | 2006-03-02 | 2007-09-13 | Showa Shell Sekiyu Kk | Lubricant composition |
| WO2007145305A1 (en) * | 2006-06-15 | 2007-12-21 | Nidec Corporation | Method of preventing lubricant from deteriorating, lubricant, and dynamic-pressure bearing device |
| JP2010174204A (en) * | 2009-02-02 | 2010-08-12 | Yuko Shoji Co | Lubricant composition for plunger |
| JP2016121336A (en) * | 2014-12-25 | 2016-07-07 | 昭和シェル石油株式会社 | Grease composition |
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