ASTM D6553-2000(2010) 0000 Standard Test Method for Coolant Compatibility of Way Lubricants《导轨润滑剂冷却能力的标准试验方法》.pdf
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1、Designation: D6553 00 (Reapproved 2010)Standard Test Method forCoolant Compatibility of Way Lubricants1This standard is issued under the fixed designation D6553; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revi
2、sion. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method measures the ability of single-use waylubricants to separate from metalworking coolants (syntheticcoolants, se
3、misynthetic coolants, and soluble oils) or otheralkaline aqueous fluids.1.2 The values stated in SI units are to be regarded asstandard. No other units of measurement are included in thisstandard.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use
4、. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use. For specificwarning statements, see Section 7.2. Referenced Documents2.1 ASTM Standards:2D1193 Specification for Reage
5、nt WaterD1401 Test Method for Water Separability of PetroleumOils and Synthetic FluidsD4057 Practice for Manual Sampling of Petroleum andPetroleum Products3. Terminology3.1 Definitions:3.1.1 cuffa layer between the way oil layer and the coolantor buffer layer that contains significant amounts of bot
6、h. Indescribing this intermediate layer, cuff is preferred to emulsionsince many of the coolants are themselves emulsions.4. Summary of Test Method4.1 This test procedure is essentially identical to TestMethod D1401, with the actual coolant or an alkaline bufferreplacing the distilled water of that
7、test method. A 40-mLsample and 40 mL of either actual coolant or a pH 9.0 buffersolution (see Note 1) are stirred for 5 min at 54C (see Note 2)in a graduated cylinder. The time required for the separation ofthe emulsion thus formed is recorded. If complete separation oremulsion reduction to 3 mL or
8、less does not occur afterstanding for 30 min, the volumes of oil (or fluid), water, andemulsion remaining at the time are reported.NOTE 1Distilled water is not a satisfactory aqueous phase for testingthe ability of way lubricants to separate from coolants because distilledwater gives different resul
9、ts from coolants. The best procedure is to use theactual coolant that the way lubricant will contaminate.Abuffer solution ofpH 9.0 may be used in place of a specific coolant to predict theseparability from alkaline coolants in general.NOTE 2It is recommended, however, that the test temperature berai
10、sed to 82 6 1C when testing way lubricants more viscous than 90 cSt(mm 2/s) at 40C.5. Significance and UseIn the normal use of a way lubricant in a machine tool, theway lubricant eventually becomes a contaminant that mayemulsify into the coolant. It is generally desirable to removethis contaminant b
11、y skimming; otherwise, the coolant lifetimemay be significantly shortened. This test method provides aguide for determining the separability characteristics of waylubricants that are expected to get into aqueous alkalinemetalworking coolants. It is used for specification of new oilsand might be usef
12、ul in monitoring of in-service oils.6. Apparatus6.1 Cylinder, 100 mL, graduated from 5 to 100 mL in1.0-mL divisions, made of glass, heat-resistant glass, or achemical equivalent. The inside diameter shall be no less than27 mm and no more than 30 mm throughout its length,measured from the top to a po
13、int 6 mm from the bottom of thecylinder. The overall length of the cylinder shall be 225 to 260mm. The graduation shall not be in error by more than 1 mL atany point on the scale.6.2 Heating Bath, sufficiently large and deep enough topermit the immersion of at least two test cylinders in the bathliq
14、uid up to their 85-mL graduations. The bath shall be capableof being maintained at a temperature of 54 6 1C (see Note 2),and shall be fitted with clamps, which hold the cylinder in aposition so that the longitudinal axis of the paddle correspondsto the vertical center line of the cylinder during the
15、 stirring1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products and Lubricants and is the direct responsibility of SubcommitteeD02.L0.02 on Machinery Lubricants.Current edition approved July 1, 2010. Published November 2010. Originallyapproved in 2000. Last previous e
16、dition approved in 2005 as D655300(2005).DOI: 10.1520/D6553-00R10.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM web
17、site.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.operation. The clamps shall hold the cylinder securely while itscontents are being stirred.6.3 Stirring Paddle, made of chromium-plated or stainlesssteel and conforming to the foll
18、owing dimensions: length, 1206 1.5 mm; width, 19 6 0.5 mm; thickness, 1.5 mm. It ismounted on a vertical shaft of similar metal, approximately 6mm in diameter, connected to a drive mechanism that rotatesthe paddle on its longitudinal axis at 1500 6 15 rpm. Theapparatus is of such design that, when t
19、he cylinder is clampedin position and the paddle assembly is lowered into thecylinder, a positive stop engages and holds the assembly whenthe lower edge of the paddle is 6 mm from the bottom of thecylinder. During the operation of the stirrer, the center of thebottom edge of the paddle shall not dev
20、iate more than 1 mmfrom the axis of rotation. When not in operation, the paddleassembly can be lifted vertically to clear the top of thegraduated cylinder.7. Reagents and Materials7.1 Purity of ReagentsReagent grade chemicals shall beused in all tests. Unless otherwise indicated, it is intended that
21、all reagents shall conform to the specifications of the Commit-tee on Analytical Reagents of the American Chemical Society,where such specifications are available.3Other grades may beused, provided it is first ascertained that the reagent is ofsufficiently high purity to permit its use without lesse
22、ning theaccuracy of the determination.7.2 Purity of WaterUnless otherwise indicated, referenceto water shall be understood to mean reagent water as definedby Type II of Specification D1193.7.3 Buffer SolutionA buffer solution of the desired pHmay be prepared using reagent-grade chemicals and reagent
23、water.7.4 Cleaning Solvents, Light-hydrocarbon, such as precipi-tation naphtha (WarningHealth hazard.) for petroleum oils.Use other appropriate solvents for dissolving synthetic fluids.7.5 Acetone.(WarningHealth hazard. Flammable.)7.6 Cleaning ReagentCleaning by either hot NOCHRO-MIX (WarningCorrosi
24、ve. Health hazard. Oxidizer.) or a24-h soak at room temperature in MICRO solution gaveacceptable, statistically equivalent results in roun robin testing.8. Sampling8.1 The test method is very sensitive to small amounts ofcontamination. Take samples in accordance with PracticeD4057.9. Preparation of
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