KR20090071950A - Water-based grinding fluid for manufacturing bearing and the method thereof - Google Patents

Water-based grinding fluid for manufacturing bearing and the method thereof Download PDF

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KR20090071950A
KR20090071950A KR1020070139894A KR20070139894A KR20090071950A KR 20090071950 A KR20090071950 A KR 20090071950A KR 1020070139894 A KR1020070139894 A KR 1020070139894A KR 20070139894 A KR20070139894 A KR 20070139894A KR 20090071950 A KR20090071950 A KR 20090071950A
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weight
water
bearings
grinding fluid
grinding
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KR1020070139894A
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KR100953264B1 (en
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김상근
노종대
김정길
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셰플러코리아(유)
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09G—POLISHING COMPOSITIONS; SKI WAXES
    • C09G1/00—Polishing compositions
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/14—Anti-slip materials; Abrasives
    • C09K3/1454—Abrasive powders, suspensions and pastes for polishing
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential

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  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Lubricants (AREA)

Abstract

A water-based grinding fluid for manufacturing bearing is provided to improve decay resistance and frictional property, to reduce environment pollution, and to prevent solid materials from precipitated and adhered to the surface of workpieces. A water-based grinding fluid for manufacturing bearing sprayed to a processing portion for lubrication and cooling comprises mineral oil of 7~13 weight%, monoethanolamine of 3~7 weight%, triethanolamine of 15~25 weight%, 2-(2-aminoethoxy)ethanol of 5~10 weight%, ricinoleic acid of 5~10 weight%, boric acid of 1~5 weight%, neodecanoic acid of 1~5 weight%, alcohols of 1~5 weight% (C12-14, ethoxylated propoxylated), dodecandioic acid of 1~5 weight%, 1,2,3-benzotriazole of 0.3~0.8 weight%, 1,3,5-triazine-1,3,5(2H, 4H, 6H)-triethanol 3~7 weight%, solvent refined light paraffin 0.1~0.5 weight% and distilled water of 25~35 weight%.

Description

베어링용 수용성 연삭 가공액 및 그 사용 방법{Water-based Grinding Fluid for manufacturing Bearing and the Method thereof}Water-based Grinding Fluid for manufacturing Bearing and the Method

도 1은 연삭 가공액의 마찰 계수 측정 방법을 개략적으로 도시한 것이다.1 schematically illustrates a method of measuring a friction coefficient of a grinding process liquid.

도 2는 종래 기술과 본원 발명 연삭 가공액의 마찰 계수 측정 결과를 도시한 그래프이다.2 is a graph showing the friction coefficient measurement results of the grinding process liquid of the prior art and the present invention.

도 3은 종래 기술과 본원 발명 연삭 가공액의 부패성 시험 사진이다.Figure 3 is a photograph of the rot test of the grinding process liquid of the prior art and the present invention.

도 4는 종래 기술과 본원 발명 연삭 가공액의 부패성 시험 결과를 도시한 그래프이다.4 is a graph showing the results of the decay test of the grinding process liquid of the prior art and the present invention.

도 5는 본원 발명 연삭 가공액의 분리성 시험 결과 사진이다.5 is a photograph of the separation test results of the grinding process liquid of the present invention.

도 6은 종래 기술에 의한 연삭 가공액의 분리성 시험 결과 사진이다.Figure 6 is a photograph of the separation test results of the grinding liquid according to the prior art.

도 7은 분리성 시험 결과 자료 표이다.7 is a segregation test result data table.

도 8은 종래 기술과 본원 발명 연삭 가공액의 소포성 시험 결과 그래프이다.8 is a graph of a defoaming test result of the grinding process liquid of the prior art and the present invention.

도 9는 볼 베어링을 개략적으로 도시한 측면도이다.9 is a side view schematically showing a ball bearing.

도 10은 도 9의 A-A선에 따르는 단면도이다.10 is a cross-sectional view taken along the line A-A of FIG.

도 11은 테이퍼 롤러 베어링을 개략적으로 도시한 측면도이다.11 is a side view schematically showing a tapered roller bearing.

본 발명은 베어링용 수용성 연삭 가공액 및 그 사용 방법에 관한 것으로, 더욱 상세하게는 부패성이 향상되어 장기 보관에 유리하며, 유압유 등 오일과 혼합되는 경우에도 분리성이 양호하여 환경 오염 가능성이 낮아지고, 마찰 계수가 감소되므로 피가공재의 가공성이 향상되며, 증류수와 희석하여 가공에 투입하여도 고형물이 석출되지 않는 베어링용 수용성 연삭 가공액 및 그 사용 방법에 관한 것이다.The present invention relates to a water-soluble grinding processing liquid for bearings and a method of using the same, and more particularly, to improve the perishability, which is advantageous for long-term storage. The present invention relates to a water-soluble grinding process liquid for bearings and a method of using the same, in which the workability of the workpiece is improved since the friction coefficient is reduced, and solids do not precipitate even when diluted with distilled water.

도 9는 일반적인 깊은 홈 볼 베어링을 도시한 측면도이며, 도 10은 도 9의 A-A선에 따르는 단면도이며, 도 11은 테이퍼 롤러 베어링을 도시한 일부 절개 사시도이다. 베어링은 크게 슬라이딩 베어링과 구름 베어링으로 구별되며, 구름 베어링은 전동체의 형상에 따라서 볼 베어링과 롤러 베어링으로 구분된다. 도 9는 전동체로 볼을 사용하는 볼 베어링을 도시한 것이며, 도 11은 전동체로서 롤러를 사용한 테이퍼 롤러 베어링을 도시한 것이다. 도 9에 도시한 바와 같이 볼 베어링(10)은 내륜(13)과 외륜(11) 사이에 위치하는 전동체로서 볼(17)을 사용하는 베어링이며, 하중 방향에 따라 반경 방향의 하중을 지지하도록 설치되는 레이디얼(Radial) 볼 베어링과, 축 방향 하중을 지지하도록 설치되는 스러스트(Thrust) 볼 베어링으로 구분하기도 한다. 도 11에 도시한 테이퍼 롤러 베어링(20)은 경사진 외륜궤도면을 가지는 외륜(21)과, 상기 외륜궤도면과 마주보는 경사진 내륜궤도 면을 가지는 내륜(23)과, 상기 외륜(21)의 외륜궤도면과 내륜(23)의 내륜궤도면 사이에 위치하는 복수의 테이퍼 롤러(25)와, 상기 테이퍼 롤러(25) 들의 원주 방향 간격을 유지하는 리테이너(27)를 포함하여 구성된다.FIG. 9 is a side view illustrating a general deep groove ball bearing, FIG. 10 is a cross-sectional view taken along the line A-A of FIG. 9, and FIG. 11 is a partially cutaway perspective view of the tapered roller bearing. Bearings are largely divided into sliding bearings and rolling bearings, and rolling bearings are classified into ball bearings and roller bearings according to the shape of the rolling elements. Fig. 9 shows a ball bearing using a ball as a rolling element, and Fig. 11 shows a tapered roller bearing using a roller as a rolling element. As shown in FIG. 9, the ball bearing 10 is a bearing using the ball 17 as a rolling element positioned between the inner ring 13 and the outer ring 11, so as to support a radial load along the load direction. It is also divided into a radial ball bearing to be installed and a thrust ball bearing to be installed to support an axial load. The tapered roller bearing 20 shown in FIG. 11 includes an outer ring 21 having an inclined outer ring orbit, an inner ring 23 having an inclined inner ring orbit facing the outer ring orbit, and the outer ring 21. And a plurality of taper rollers 25 positioned between the outer ring raceway surface of the inner ring raceway surface and the inner ring raceway surface of the inner ring 23, and a retainer 27 for maintaining the circumferential distance between the taper rollers 25.

도 10에서 도면 부호 11a는 씰(19)을 고정 삽입하기 위한 삽입홈을, 13a는 씰(19)의 내경부가 위치하는 씰홈을, 15는 리테이너를, 19는 상기 삽입홈(11a)에 삽입 고정 설치되는 씰을 도시한 것이며, S는 상기 외륜(11), 내륜(14) 및 씰(19)에 의하여 형성되는 공간을 도시한 것이다.In FIG. 10, reference numeral 11a denotes an insertion groove for fixedly inserting the seal 19, 13a denotes a seal groove in which the inner diameter of the seal 19 is located, 15 denotes a retainer, and 19 denotes an insertion groove fixed to the insertion groove 11a. It shows the seal installed, and S shows the space formed by the said outer ring 11, the inner ring 14, and the seal 19. As shown in FIG.

베어링이 장착되어 회전운동을 할 때, 도 9 및 도 10에 도시한 볼 베어링(10)에서 전동체인 볼(17)은 외륜궤도(12) 및 내륜궤도(14)와 접하여 구름 접촉을 하며, 도 11에 도시한 테이퍼 롤러 베어링에서 전동체인 롤러(25)는 외륜궤도면 및 내륜궤도면과 접하여 구름 접촉을 한다. 따라서 볼 베어링(10)에서 외륜궤도(12)와 내륜궤도(14)는 열처리 후 연삭 가공을 하며, 마찬가지로 테이퍼 롤러 베어링에서 외륜궤도면과 내륜궤도면도 열처리 후 연삭 가공을 한다. When the bearing is mounted and rotates, in the ball bearing 10 shown in Figs. 9 and 10, the rolling chain ball 17 is in contact with the outer ring raceway 12 and the inner ring raceway 14 and makes a rolling contact. In the tapered roller bearing shown in Fig. 11, the rolling chain roller 25 is in contact with the outer ring raceway surface and the inner raceway surface to make a rolling contact. Therefore, in the ball bearing 10, the outer ring raceway 12 and the inner ring raceway 14 are subjected to grinding after heat treatment, and similarly, the outer ring raceway surface and the inner ring raceway surface are also subjected to grinding processing after the heat treatment.

연삭 가공에 있어서 연삭 지석과 피가공재(내륜 및 외륜) 사이에는 냉각 작용과 윤활 작용을 하도록 하기 위하여 연삭액을 투입 분사한다.In the grinding process, a grinding fluid is injected and injected in order to cool and lubricate between the grinding grindstone and the workpiece (inner ring and outer ring).

종래 베어링 제조를 위한 피가공재 연삭에 투입되는 수용성 연삭액은 원액인 연삭 가공액으로부터 고형물이 석출됨으로써 피가공재 표면에 부착하거나, 연삭 가공액 보관 용기 표면에 부착하고, 석출된 고형물에 의하여 연삭 가공액의 함량이 유지되지 않아 연삭 가공액으로서 성능이 저하되는 문제점이 있었다. 그리고 투입된 연삭액을 재사용하기 위해서 연삭액에 포함된 이물질(예를 들면 피가공재 연삭 칩(Chip)이나 연삭 지석 마모입자)을 필터로 필터링하여 사용하였으나, 연삭 가공액으로부터 석출되는 고형물에 의하여 필터가 막히는 문제점이 있었다. 또한, 유화 작용을 하는 성분으로서 디에탄올아민(Diethanolamine)을 사용함으로써, 다른 물질(예를 들면 베어링의 방청제로서 사용되는 아질산소다)과 반응하여 발암 물질을 생성할 위험도 있었다.Conventional water-soluble grinding fluids that are added to grinding workpieces for bearing manufacturing are attached to the surface of the workpiece by depositing solids from the raw grinding solution, or adhered to the surface of the grinding fluid storage container, and the grinding fluids are deposited by the precipitated solids. There was a problem in that the content is not maintained because the performance is reduced as the grinding fluid. In order to reuse the added grinding liquid, foreign substances (for example, workpiece grinding chips or grinding grind wear particles) included in the grinding liquid were used as a filter, but the filter was removed by a solid precipitated from the grinding liquid. There was a clogging issue. In addition, by using diethanolamine as a component having emulsification, there was also a risk of reacting with other substances (for example, sodium nitrite used as a rust inhibitor of bearings) to produce carcinogens.

한편, 환경 문제와 관련하여 종래의 수용성 연삭 가공액을 희석하여 사용하는 연삭액이 오일이 혼합되는 경우 오일과 함께 에멀젼을 형성하여 분리되지 않음으로써 환경을 오염시킬 수 있으며, 윤활 특성이 양호하지 못하여 연삭 가공 시 제품의 표면 품질에 영향을 줄 수 있으며, 부패 저항 특성이 양호하지 않아 장시간 유지되지 못하여 보관에 어려운 문제점이 있었다.  On the other hand, in connection with environmental problems, when the grinding liquid used by diluting the conventional aqueous grinding processing liquid is mixed with oil, it may contaminate the environment by forming an emulsion with the oil and thus may not contaminate the environment. It may affect the surface quality of the product during the grinding process, there is a problem in that it is difficult to store because it is not good for a long time due to poor decay resistance characteristics.

본 발명은 상기와 같은 종래의 수용성 연삭 가공액이 가지고 이는 문제점을 해결하기 위하여 제안된 것으로서, 종래 수용성 연삭 가공액에 비하여 마찰 특성이 향상되며, 부패성이 향상되어 장기간 보관하는 경우에도 성능이 저하되지 않으며, 물로 희석하여 연삭액으로 사용하는 경우에도 피가공재 표면이나 보관 용기에 고형물이 석출되지 않아 장기간 보관하는 경우에도 성능이 저하되지 않으며, 주변의 물질과 반응하여 발암 물질을 생성하지 않으며, 환경 보존성도 향상된 베어링용 수용성 연삭 가공액 및 그 사용 방법을 제공하는데 목적이 있다.The present invention has been proposed in order to solve the problems of the conventional water-soluble grinding solution as described above, the friction characteristics are improved compared to the conventional water-soluble grinding solution, and the performance is not degraded even if stored for a long period of time is improved Also, even when diluted with water and used as a grinding fluid, solids do not precipitate on the surface of the workpiece or in the storage container, and even if it is stored for a long time, its performance does not deteriorate, and it does not react with surrounding materials to produce carcinogens. Another object of the present invention is to provide an improved water-soluble grinding fluid for bearings and a method of using the same.

상기 목적을 달성하기 위한 본 발명의 바람직한 실시 예에 따르는 베어링용 수용성 연삭 가공액은 기유(Mineral Oil)와 증류수로 이루어지며, 방부제 작용을 하는 첨가제로서 트리에탄올(1,3,5-triazine-1,3,5(2H, 4H, 6H)-Triethanol)을, 소포제로 작용하는 첨가제로서 석유증류용매 정제 광파라핀(Distillates(petroleum) solvent-refined light paraffine)을, 유화제로 작용하는 첨가제로서 모노에탄올아민(Monoethanolamine)을 포함하여 구성되는 것을 특징으로 한다.Water-soluble grinding processing liquid for a bearing according to a preferred embodiment of the present invention for achieving the above object is made of a base oil (Mineral Oil) and distilled water, triethanol (1,3,5-triazine-1, 3,5 (2H, 4H, 6H) -Triethanol) was used as an antifoaming agent. Distillates (petroleum) solvent-refined light paraffine was used as an antifoaming agent. Monoethanolamine) is characterized in that it comprises a.

베어링의 연삭 가공 시 윤활, 냉각을 위하여 물로 희석하여 가공 부위에 살포되는 본 발명에 따르는 베어링용 수용성 연삭 가공액은 7∼13중량%의 기유(Mineral Oil), 3∼7중량%의 모노에탄올아민(Monoethanolamine), 15∼25중량%의 트리에탄올아민(Triethanolamine), 5∼10중량%의 2-에탄올(2-(2-aminoethoxy)ethanol), 5∼10중량%의 리시놀레산(Ricinoleic acid), 1∼5중량%의 붕산(Boric acid), 1∼5중량%의 네오데칸산(Neodecanoic acid), 1∼5중량%의 알콜(Alcohols, C12-14, ethoxylated propoxylated), 1∼5중량%의 도데칸디오산(Dodecandioic acid), 0.3∼0.8중량%의 벤조트리아졸(1,2,3-Benzotriazole), 3∼7중량%의 트리에탄올(1,3,5-triazine-1,3,5(2H, 4H, 6H)-Triethanol), 0.1∼0.5중량%의 정제 광파라핀(Distillates(petroleum), solvent refined light paraffin), 25∼35중량%의 증류수를 포함하여 구성되는 것을 특징으로 한다.The water-soluble grinding processing liquid for bearings according to the present invention, which is diluted with water for lubrication and cooling during the grinding process of the bearing and sprayed onto the machining site, contains 7 to 13% by weight of mineral oil and 3 to 7% by weight of monoethanolamine. (Monoethanolamine), 15-25 wt% Triethanolamine, 5-10 wt% 2- (ethanol) 2-ethanol, 5-10 wt% Ricinoleic acid, 1-5% boric acid, 1-5% neodecanoic acid, 1-5% alcohols (Alcohols, C12-14, ethoxylated propoxylated), 1-5% by weight Dodecanedioic acid, 0.3-0.8 wt% benzotriazole, 3-7 wt% triethanol (1,3,5-triazine-1,3,5 (2H) , 4H, 6H) -Triethanol), 0.1 to 0.5% by weight of purified light paraffin (Distillates (petroleum), solvent refined light paraffin), characterized in that it comprises a 25 to 35% by weight of distilled water.

상기 베어링용 수용성 연삭 가공액은 20∼30배의 증류수로 희석하고, 300∼600ppm의 칼슘아세테이트(Calcium Acetate)를 첨가하여 사용하는 것을 특징으로 한 다.The water-soluble grinding solution for bearings is diluted with 20 to 30 times distilled water, and 300 to 600 ppm calcium acetate is added and used.

이하 본 발명에 따르는 베어링용 수용성 연삭 가공액 및 그 사용 방법의 바람직한 실시 예를 첨부 도면을 참조하여 상세히 설명한다. 본 발명에 따르는 바람직한 실시 예를 설명하는데 있어서 종래 기술에서 설명된 내용은 생략한다.Hereinafter, with reference to the accompanying drawings, a preferred embodiment of a water-soluble grinding liquid for a bearing and a method of using the same according to the present invention will be described in detail. In the description of the preferred embodiment according to the present invention, the contents described in the prior art will be omitted.

절삭유제는 금속가공 과정에서 가공을 돕기 위해 사용되는 유제를 말하며, 공구와 피가공재 사이의 마찰을 줄이고, 마멸과 마모를 줄이고, 가공표면의 특성을 양호하게 하며, 표면이 유착되거나 녹아 붙는 것을 방지하고, 가공시 발생하는 열을 효과적으로 냉각시켜 열로 인한 변형을 방지하고, 가공된 미세한 가루, 잔여물 등을 세척하는 작용을 한다. 그리고 부가적인 기능으로서 가공된 표면의 부식을 방지하는 것과 뜨거워진 가공표면을 냉각시켜 취급을 용이하게 하는 것 등이 있다. Cutting fluids are those used to aid machining in metalworking processes, which reduce friction between the tool and the workpiece, reduce wear and tear, improve the surface quality and prevent the surfaces from sticking or melting. And, it effectively cools the heat generated during processing to prevent deformation due to heat, and serves to wash the processed fine powder, residues and the like. Additional functions include preventing corrosion of the machined surface and cooling the hot machined surface to facilitate handling.

수용성 절삭유제는 석유계 기유(Mineral oil)와 물을 혼합하고, 필요한 성분의 첨가제를 첨가하여 사용한다. 기유는 포화 탄화수소가 주성분이며 탄소수는 일반적으로 15∼35 범위이다. 탄소원자가 사슬모양으로 배열되고 수소 원자에 의해 탄소원자가 포화된 상태로서 점도지수와 유동점이 높고 열화학성으로 안정되어 산화안정성이 우수한 파라핀계 기유와, 탄소원자가 고리모양으로 배열되고 수소 원자에 의해 탄소원자가 포화된 상태인 나프텐계 기유를 일반적으로 사용한다.Water-soluble cutting oil is used by mixing petroleum-based oil (Mineral oil) and water, and additives of the required ingredients. Base oil is mainly composed of saturated hydrocarbon and carbon number is generally in the range of 15 to 35. The carbon atoms are arranged in a chain shape and the carbon atoms are saturated by hydrogen atoms, and the paraffin base oil having high viscosity index, pour point, and thermochemical stability and excellent oxidation stability, and carbon atoms are arranged in a ring shape and carbon atoms are formed by hydrogen atoms Naphthenic base oils in saturated state are generally used.

본 발명에 따르는 베어링용 수용성 연삭 가공액은 기유(Mineral oil)과 증류수로 이루어지며, 방부제 작용을 하는 첨가제로서 트리에탄올(1,3,5-triazine- 1,3,5(2H, 4H, 6H)-Triethanol)을, 소포제로 작용하는 첨가제로서 석유증류용매 정제 광파라핀(Distillates(petroleum) solvent-refined light paraffine)을, 유화제로 작용하는 첨가제로서 모노에탄올아민(Monoethanolamine)을 포함하여 구성된다.Water-soluble grinding processing liquid for bearings according to the present invention consists of a base oil (Mineral oil) and distilled water, triethanol (1,3,5-triazine-1,3,5 (2H, 4H, 6H) as an additive to act as a preservative -Triethanol), distillates (petroleum) solvent-refined light paraffine as an antifoaming additive, and monoethanolamine (Monoethanolamine) as an additive acting as an emulsifier.

보다 상세하게 본 발명 베어링용 수용성 연삭 가공액은 7∼13중량%의 기유(Mineral Oil), 3∼7중량%의 모노에탄올아민(Monoethanolamine), 15∼25중량%의 트리에탄올아민(Triethanolamine), 5∼10중량%의 2-에탄올(2-(2-aminoethoxy)ethanol), 5∼10중량%의 리시놀레산(Ricinoleic acid), 1∼5중량%의 붕산(Boric acid), 1∼5중량%의 네오데칸산(Neodecanoic acid), 1∼5중량%의 알콜(Alcohols, C12-14, ethoxylated propoxylated), 1∼5중량%의 도데칸디오산(Dodecandioic acid), 0.3∼0.8중량%의 벤조트리아졸(1,2,3-Benzotriazole), 3∼7중량%의 트리에탄올(1,3,5-triazine-1,3,5(2H, 4H, 6H)-Triethanol), 0.1∼0.5중량%의 정제 광파라핀(Distillates(petroleum), solvent refined light paraffin), 25∼35중량%의 증류수를 포함하여 구성된다.More specifically, the water-soluble grinding process liquid for bearing of the present invention is 7 to 13% by weight of a basic oil (Mineral Oil), 3 to 7% by weight of monoethanolamine (Monoethanolamine), 15 to 25% by weight of triethanolamine (Triethanolamine), 5 ˜10 wt% 2- (2-aminoethoxy) ethanol, 5-10 wt% Ricinoleic acid, 1-5 wt% Boric acid, 1-5 wt% Neodecanoic acid, 1-5% by weight of alcohol (Alcohols, C12-14, ethoxylated propoxylated), 1-5% by weight of dodecandioic acid, 0.3-0.8% by weight of benzotriazole (1,2,3-Benzotriazole), 3-7 wt% triethanol (1,3,5-triazine-1,3,5 (2H, 4H, 6H) -Triethanol), 0.1-0.5 wt% purified light It comprises paraffin (Distillates (petroleum), solvent refined light paraffin), 25 to 35% by weight of distilled water.

상기에서 기유(Mineral Oil)는 고용해성 기유(Mineral oil, highly raffinated)로 하는 것이 바람직하다.In the above-mentioned base oil (Mineral Oil) is preferably a high-solubility base oil (Mineral oil, highly raffinated).

비교 시험 1 - 마찰 비교 시험Comparative Test 1-Friction Comparison Test

도 1은 시험판에 연삭 가공액(원액 또는 희석액)을 분사 도포하고, 스틱에 일정 크기의 하중을 부가한 후, 도 1의 시험판을 화살표 방향으로 이동시키면서 마찰 계수를 측정하는 장치를 개략적으로 도시한 것이며, 도 2는 마찰 계수 시험 결 과를 나타낸 그래프이다. 마찰 계수는 공구와 피가공재 사이의 마찰과, 피가공재의 가공표면의 특성에 관계된 인자로서, 마찰 계수가 낮아지면 공구와 피가공재 사이의 마찰이 감소하여 가공 능률이 향상되고 가공 표면이 양호하게 된다.FIG. 1 schematically shows an apparatus for measuring a friction coefficient by spraying and applying a grinding liquid (stock solution or diluent) to a test plate, applying a predetermined load to a stick, and then moving the test plate of FIG. 1 in the direction of an arrow. 2 is a graph showing the results of the friction coefficient test. The coefficient of friction is a factor related to the friction between the tool and the workpiece and the characteristics of the workpiece surface.As the friction coefficient decreases, the friction between the tool and the workpiece decreases, improving the machining efficiency and improving the machining surface. .

스틱에 부가된 하중과 화살표 방향으로 시험판을 이동시킬 때 소요되는 마찰력으로부터 마찰 계수를 계산한다. 시험판 이동 속도는 0.004㎧이며, 스틱에 부가된 하중은 400g이며, 시험실 온도는 상온(20∼25℃)으로 유지하고, 시험판의 이동 거리는 50㎜로 하였으며, 도포량은 같은 양이 되도록 하였다.The coefficient of friction is calculated from the load applied to the stick and the frictional force required to move the test plate in the direction of the arrow. The test plate moving speed was 0.004 kPa, the load applied to the stick was 400 g, the test chamber temperature was maintained at room temperature (20-25 ° C.), the moving distance of the test plate was 50 mm, and the coating amount was the same amount.

도 2에 도시한 바와 같이, 종래의 수용성 연삭 가공액에 비하여 본원 발명 베어링용 수용성 연삭 가공액의 마찰 계수가 낮게 측정되었으며, 시험판의 왕복 회수에 따라 차이가 있으나, 최대 약11％의 마찰 계수 감소가 관찰되었다.As shown in FIG. 2, the friction coefficient of the water-soluble grinding fluid for bearings of the present invention was measured lower than that of the conventional water-soluble grinding fluid, and it is different depending on the number of round trips of the test plate, but the friction coefficient decreases up to about 11%. Was observed.

비교 시험 2 - 부패 특성 시험Comparative Test 2-Corruption Characteristics Test

본원 발명 베어링용 수용성 연삭 가공액 1㎖를 배양 접시에서 티에스비(Trypticase Soy Broth, TSB) 배양액 50㎖에 혼합시키고, 수용성 부패액 1㎖를 추가하여 박테리아의 변화와 pH를 측정하였다. 그리고 시험을 위하여 매일 1㎖의 수용성 부패액을 추가하였다.The water-soluble grinding solution for bearing of the present invention was mixed with 50 ml of Trypticase Soy Broth (TSB) culture in a culture dish, and 1 ml of water-soluble decay was added to measure the change of bacteria and pH. And 1 ml of aqueous decay solution was added daily for the test.

도 3은 초기 2일에서 4일까지의 배양 접시의 상태를 촬영한 사진이며, 접시 안의 숫자는 측정한 pH를 나타낸다.Figure 3 is a photograph of the state of the culture dish from the first two days to four days, the number in the dish represents the measured pH.

초기 4일까지는 미미한 차이가 있었으나, 도 4에 도시한 바와 같이 10일에 이르면서 pH에 큰 차이를 나타냈으며, 본원 발명 베어링용 수용성 연삭 가공액은 30일이 경과할 때까지 pH가 9 이상으로 유지되었으나 종래의 수용성 연삭 가공액은 10일이 경과할 때 pH가 9.03까지 낮아지고, 30일이 경과할 때는 8.55까지 낮아졌다. pH가 낮아지는 것은 배양 접시 내에 박테리아가 증가하면서 염기성에서 산성으로 성질이 변하기 때문이다.Although there was a slight difference until the first 4 days, as shown in Figure 4 showed a large difference in pH up to 10 days, the water-soluble grinding solution for bearings of the present invention has a pH of 9 or more until 30 days Although maintained, the conventional water-soluble grinding fluid had a pH lowered to 9.03 after 10 days and lowered to 8.55 after 30 days. The decrease in pH is due to the change in properties from basic to acidic as bacteria increase in the culture dish.

따라서 본원 발명은 종래 수용성 연삭 가공액에 비하여 부패가 늦게 진행되며, 부패 특성이 향상되어, 장기간 보관이 가능하며 보관에 소요되는 비용도 절감할 수 있을 것이다.Therefore, in the present invention, the decay progresses later than the conventional water-soluble grinding processing liquid, and the decay characteristics are improved, and thus the long-term storage and the cost required for storage will be reduced.

비교 시험 3 - 분리성 시험Comparative Test 3-Separation Test

본원 발명 베어링용 수용성 연삭 가공액 3중량％와 증류수 97중량％로 혼합한 용액 40㎖를 ISO VG 32 유압유(Hydraulic oil) 40㎖와 혼합하여 54℃에서 5분간 저어서 서로 잘 섞이도록 하였다. 그리고 종래 수용성 연삭 가공액도 동일 조건에서 ISO VG 32 유압유(Hydraulic oil)와 혼합하였다.40 ml of a solution mixed with 3 wt% water-soluble grinding solution for bearing of the present invention and 97 wt% of distilled water was mixed with 40 ml of ISO VG 32 hydraulic oil and stirred at 54 ° C. for 5 minutes to mix well. In addition, the conventional water-soluble grinding process liquid was mixed with ISO VG 32 hydraulic oil under the same conditions.

그리고 혼합액을 메스실린더에 각각 투입하고 매 10분마다 분리되는 상태를 관찰하였다. 도 5는 본원 발명 베어링용 수용성 연삭 가공액이 투입된 메스실린더를 60분 후에 촬영한 것이며, 도 6은 종래 수용성 연삭 가공액이 투입된 메스실린더를 60분 후에 촬영한 것이다. 도 5 및 도 6에서와 같이 본원 발명에서는 상층 ISO VG 32 유압유와의 사이에 얇은 두께의 혼합층인 에멀젼(Emulsion) 층이 형성되었으며, 종래 수용성 연삭 가공액에서는 본원 발명보다 두꺼운 층의 에멀젼 층이 형성되었다.And the mixed solution was put into the measuring cylinder, and the state which isolate | separates every 10 minutes was observed. FIG. 5 is a 60-minute shot of the measuring cylinder in which the water-soluble grinding solution for bearing of the present invention is added, and FIG. 6 is a 60-minute shot of the measuring cylinder in which the conventional water-soluble grinding solution is added. 5 and 6, in the present invention, an emulsion layer, which is a mixed layer of thin thickness, is formed between the upper layer ISO VG 32 hydraulic oil, and in the conventional water-soluble grinding solution, an emulsion layer having a thicker layer than the present invention is formed. It became.

도 7은 매 10분마다 각 층의 체적을 관찰하여 정리한 것이다. 도 7에서 숫자 1-숫자 2-숫자 3으로 나타내어 표기하고 있으며, 숫자 1은 ISO VG 32 유압유의 부피, 숫자 2는 에멀젼 층의 부피, 숫자 3은 연삭 가공액 혼합액의 부피를 나타낸다. 도 7에 도시한 표의 우측 기재 내용에서와 같이 본원 발명 베어링용 수용성 연삭 가공액은 10분이 경과하면서부터 VG 32 유압유와 혼합액이 분리되어 그 사이에는 적은 양의 에멀젼 층(2㎖)만이 잔존하였으며, 종래 수용성 연삭 가공액은 60분이 경과된 후에도 4㎖의 에멀젼 층이 잔존하였다.7 shows the volume of each layer observed every 10 minutes. In Figure 7, it is represented by the numeral 1-number 2-number 3, the number 1 is the volume of the ISO VG 32 hydraulic oil, the number 2 is the volume of the emulsion layer, the number 3 is the volume of the grinding liquid mixture. As shown in the right side of the table shown in FIG. 7, the water-soluble grinding fluid for bearings of the present invention was separated from the VG 32 hydraulic oil and the mixed liquid after 10 minutes, and only a small amount of the emulsion layer (2 ml) remained between them. In the conventional aqueous grinding solution, 4 ml of the emulsion layer remained even after 60 minutes had elapsed.

따라서 본원 발명 베어링용 수용성 연삭 가공액은 사용 중에 ISO VG 32 유압유와 같은 오일과 혼합되어도 쉽게 분리되어 회수되므로 환경 보호에 유리한 효과가 있는 것이다.Therefore, the water-soluble grinding process liquid for bearing of the present invention is easily separated and recovered even when mixed with oil such as ISO VG 32 hydraulic oil during use, which is advantageous in environmental protection.

본 발명에 따르는 베어링용 수용성 연삭 가공액은 부피 기준으로 20∼30배의 증류수로 희석하여 사용하며, 증류수로 희석한 후 소량(300∼600ppm)의 칼슘아세테이트(Calcium Acetate)를 첨가하여 사용하는 것이 바람직하다.  The water-soluble grinding solution for bearings according to the present invention is used by diluting with distilled water of 20 to 30 times on a volume basis, and diluted with distilled water to add a small amount (300 to 600 ppm) of calcium acetate (Calcium Acetate). desirable.

동일한 양(부피 기준으로 30배)의 증류수로 희석하여 8ℓ의 탱크에 약 4ℓ를 투입하고 25℃에서 서큘레이션 하여 거품(Foam)을 발생시키고, 시간에 따른 거품의 높이 변화를 측정하였으며, 시간에 따른 거품의 높이는 도 8의 그래프와 같이 나타났다.Diluted with the same amount (30 times by volume) of distilled water, 4 L was added to an 8 L tank and circulated at 25 ° C to generate a foam, and the height change of the foam was measured over time. The height of the foam was as shown in the graph of FIG.

본 발명의 권리 범위는 상기에 기재한 바람직한 실시 예에 한정하는 것은 아니며 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자에게 자명한 범위 내에서 변형 가능한 범위로서 본 발명과 균등한 범위까지 확대 해석하여야 할 것이 다.The scope of the present invention is not limited to the preferred embodiments described above, but is broadly interpreted to be equivalent to the present invention as a range that can be modified within a range apparent to those skilled in the art. It must be done.

본 발명의 바람직한 실시 예에 따르는 베어링용 수용성 연삭 가공액은 종래의 수용성 연삭 가공액에 비하여 종래 수용성 연삭 가공액과 동일 조건에서 30일을 경과 한 후에도 pH가 9.00 이하로 떨어지지 않았는바 부패성이 향상되었으며, 유압유와 혼합한 후 신속하게 분리되어 아주 얇은 층의 에멀젼이 형성되었으며 따라서 환경을 오염시키는 정도가 개선되었으며, 마찰 특성에 있어서 종래 수용성 연삭 가공액에 비하여 마찰계수가 11％까지 감소하였으며; 본원 연삭 가공액을 20∼30배의 증류수를 투입하여 희석한 후 미량(300∼600ppm)의 칼슘아세테이트를 첨가하여 베어링 연삭 공정에 투입한 결과, 가공 베어링 표면에 부착하는 고형물이 석출되지 않았으며, 희석액을 재사용하기 위하여 필터를 통과시키는 경우에도 고형물에 의한 필터 막힘 현상은 발생하지 않았으며, 고형물 발생 억제를 위하여 추가로 특정 성분을 투입할 필요도 없게 되었다.Water-soluble grinding process liquid for bearings according to a preferred embodiment of the present invention compared to the conventional water-soluble grinding process liquid, even after 30 days in the same conditions as the conventional water-soluble grinding process liquid pH did not fall to 9.00 bar rotability was improved After mixing with the hydraulic oil, the mixture was quickly separated to form a very thin layer of emulsion, thus improving the degree of environmental contamination, and reducing the friction coefficient by 11% compared to the conventional water-soluble grinding fluid in the friction property; After diluting the grinding processing liquid with 20-30 times distilled water and adding a trace amount (300-600 ppm) of calcium acetate to the bearing grinding process, solids adhering to the surface of the processed bearing did not precipitate. In the case of passing the filter to reuse the diluent, filter clogging due to solids did not occur, and it was not necessary to add a specific component to suppress solids generation.

Claims (3)

베어링의 연삭 가공 시 윤활 냉각을 위하여 가공 부위에 살포되는 베어링용 수용성 연삭 가공액에 있어서, 기유(Mineral Oil)와 증류수로 이루어지며, 방부제 작용을 하는 트리에탄올(1,3,5-triazine-1,3,5(2H, 4H, 6H)-Triethanol)을, 소포제로서 석유증류용매 정제 광파라핀(Distillates(petroleum) solvent-refined light paraffine)을, 유화제로서 모노에탄올아민(Monoethanolamine)을 포함하여 구성되는 것을 특징으로 하는 베어링용 수용성 연삭 가공액.Aqueous grinding fluid for bearings that are sprayed to the processing site for lubrication cooling during grinding of bearings, consisting of basic oil and distilled water and containing triethanol (1,3,5-triazine-1, 3,5 (2H, 4H, 6H) -Triethanol), a distillates (petroleum) solvent-refined light paraffine as an antifoaming agent, and monoethanolamine as the emulsifier A water-soluble grinding fluid for bearings. 베어링의 연삭 가공 시 윤활, 냉각을 위하여 가공 부위에 살포되는 베어링용 수용성 연삭 가공액에 있어서, 7∼13중량%의 기유(Mineral Oil), 3∼7중량%의 모노에탄올아민(Monoethanolamine), 15∼25중량%의 트리에탄올아민(Triethanolamine), 5∼10중량%의 2-에탄올(2-(2-aminoethoxy)ethanol), 5∼10중량%의 리시놀레산(Ricinoleic acid), 1∼5중량%의 붕산(Boric acid), 1∼5중량%의 네오데칸산(Neodecanoic acid), 1∼5중량%의 알콜(Alcohols, C12-14, ethoxylated propoxylated), 1∼5중량%의 도데칸디오산(Dodecandioic acid), 0.3∼0.8중량%의 벤조트리아졸(1,2,3-Benzotriazole), 3∼7중량%의 트리에탄올(1,3,5-triazine-1,3,5(2H, 4H, 6H)-Triethanol), 0.1∼0.5중량%의 정제 광파라핀(Distillates(petroleum), solvent refined light paraffin), 25∼35중량%의 증류수를 포함하여 구성되는 것을 특징으로 하는 베어링용 수용성 연삭 가공액.In water-soluble grinding fluid for bearings, which are sprayed onto the processing site for lubrication and cooling during grinding of bearings, 7 to 13% by weight of mineral oil, 3 to 7% by weight of monoethanolamine, 15 -25 wt% Triethanolamine, 5-10 wt% 2- (2-aminoethoxy) ethanol, 5-10 wt% Ricinoleic acid, 1-5 wt% Boric acid, 1-5 wt% of neodecanoic acid, 1-5 wt% of alcohol (Alcohols, C12-14, ethoxylated propoxylated), 1-5 wt% of dodecanedioic acid acid), 0.3-0.8 wt% benzotriazole (1,2,3-Benzotriazole), 3-7 wt% triethanol (1,3,5-triazine-1,3,5 (2H, 4H, 6H) -Triethanol), 0.1 to 0.5% by weight of purified light paraffin (Distillates (petroleum), solvent refined light paraffin), 25 to 35% by weight of distilled water comprising a water-soluble grinding process for bearings. 제2 항의 베어링용 수용성 연삭 가공액을 20∼30배의 증류수로 희석하고, 300∼600ppm의 칼슘아세테이트(Calcium Acetate)를 첨가하는 것을 특징으로 하는 베어링용 수용성 연삭 가공액 사용 방법.The water-soluble grinding fluid for bearings of Claim 2 is diluted with 20-30 times distilled water, and 300-600 ppm calcium acetate is added, The method of using the water-soluble grinding fluid for bearings characterized by the above-mentioned.
KR1020070139894A 2007-12-28 2007-12-28 Water-based Grinding Fluid for manufacturing Bearing and the Method thereof KR100953264B1 (en)

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* Cited by examiner, † Cited by third party
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CN107699139A (en) * 2017-11-03 2018-02-16 辽宁宝瑞科技有限公司 A kind of super lapping liquid composition of water base environment-friendly antirust type and preparation and application
KR20190042196A (en) * 2017-10-16 2019-04-24 김태만 Aqueous cutting fluid composition for wire saw
CN112980540A (en) * 2020-12-22 2021-06-18 上海金兆节能科技有限公司 Environmental-refreshing trace lubricant and preparation method thereof
KR102477036B1 (en) * 2022-05-26 2022-12-19 주식회사 에스에이치엘 Wet lubricating composition

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ES2172412B1 (en) * 2000-07-21 2003-10-01 Nueva Fl Iberica S A PROCEDURE FOR THE PREPARATION OF LUBRICATING CUTTING FLUIDS.
KR100439663B1 (en) 2003-07-03 2004-07-12 주식회사 이득 Hydraulic or Slide-way oil the same water-cutting fluids composition

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Publication number Priority date Publication date Assignee Title
KR20190042196A (en) * 2017-10-16 2019-04-24 김태만 Aqueous cutting fluid composition for wire saw
CN107699139A (en) * 2017-11-03 2018-02-16 辽宁宝瑞科技有限公司 A kind of super lapping liquid composition of water base environment-friendly antirust type and preparation and application
CN112980540A (en) * 2020-12-22 2021-06-18 上海金兆节能科技有限公司 Environmental-refreshing trace lubricant and preparation method thereof
KR102477036B1 (en) * 2022-05-26 2022-12-19 주식회사 에스에이치엘 Wet lubricating composition

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