ASTM D6553-00(2010)
(Test Method)Standard Test Method for Coolant Compatibility of Way Lubricants
Standard Test Method for Coolant Compatibility of Way Lubricants
SIGNIFICANCE AND USE
In the normal use of a way lubricant in a machine tool, the way lubricant eventually becomes a contaminant that may emulsify into the coolant. It is generally desirable to remove this contaminant by skimming; otherwise, the coolant lifetime may be significantly shortened. This test method provides a guide for determining the separability characteristics of way lubricants that are expected to get into aqueous alkaline metalworking coolants. It is used for specification of new oils and might be useful in monitoring of in-service oils.
SCOPE
1.1 This test method measures the ability of single-use way lubricants to separate from metalworking coolants (synthetic coolants, semisynthetic coolants, and soluble oils) or other alkaline aqueous fluids.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific warning statements, see Section 7.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D6553 − 00(Reapproved 2010)
Standard Test Method for
Coolant Compatibility of Way Lubricants
This standard is issued under the fixed designation D6553; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope replacing the distilled water of that test method. A 40-mL
sample and 40 mL of either actual coolant or a pH 9.0 buffer
1.1 This test method measures the ability of single-use way
solution (see Note 1) are stirred for 5 min at 54°C (see Note 2)
lubricants to separate from metalworking coolants (synthetic
in a graduated cylinder. The time required for the separation of
coolants, semisynthetic coolants, and soluble oils) or other
theemulsionthusformedisrecorded.Ifcompleteseparationor
alkaline aqueous fluids.
emulsion reduction to 3 mL or less does not occur after
1.2 The values stated in SI units are to be regarded as
standing for 30 min, the volumes of oil (or fluid), water, and
standard. No other units of measurement are included in this
emulsion remaining at the time are reported.
standard.
NOTE 1—Distilled water is not a satisfactory aqueous phase for testing
1.3 This standard does not purport to address all of the
the ability of way lubricants to separate from coolants because distilled
safety concerns, if any, associated with its use. It is the
watergivesdifferentresultsfromcoolants.Thebestprocedureistousethe
actual coolant that the way lubricant will contaminate.Abuffer solution of
responsibility of the user of this standard to establish appro-
pH 9.0 may be used in place of a specific coolant to predict the
priate safety and health practices and determine the applica-
separability from alkaline coolants in general.
bility of regulatory limitations prior to use. For specific
NOTE 2—It is recommended, however, that the test temperature be
warning statements, see Section 7.
raised to 82 6 1°C when testing way lubricants more viscous than 90 cSt
(mm 2/s) at 40°C.
2. Referenced Documents
5. Significance and Use
2.1 ASTM Standards:
5.1 In the normal use of a way lubricant in a machine tool,
D1193 Specification for Reagent Water
the way lubricant eventually becomes a contaminant that may
D1401 TestMethodforWaterSeparabilityofPetroleumOils
emulsify into the coolant. It is generally desirable to remove
and Synthetic Fluids
this contaminant by skimming; otherwise, the coolant lifetime
D4057 Practice for Manual Sampling of Petroleum and
may be significantly shortened. This test method provides a
Petroleum Products
guide for determining the separability characteristics of way
3. Terminology lubricants that are expected to get into aqueous alkaline
metalworking coolants. It is used for specification of new oils
3.1 Definitions:
and might be useful in monitoring of in-service oils.
3.1.1 cuff—alayerbetweenthewayoillayerandthecoolant
or buffer layer that contains significant amounts of both. In
6. Apparatus
describing this intermediate layer, cuff is preferred to emulsion
6.1 Cylinder, 100 mL, graduated from 5 to 100 mL in
since many of the coolants are themselves emulsions.
1.0-mL divisions, made of glass, heat-resistant glass, or a
chemical equivalent. The inside diameter shall be no less than
4. Summary of Test Method
27 mm and no more than 30 mm throughout its length,
4.1 This test procedure is essentially identical to Test
measured from the top to a point 6 mm from the bottom of the
Method D1401, with the actual coolant or an alkaline buffer
cylinder. The overall length of the cylinder shall be 225 to 260
mm. The graduation shall not be in error by more than 1 mLat
any point on the scale.
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
6.2 Heating Bath, sufficiently large and deep enough to
D02.L0.01 on Metal Removal Fluids and Lubricants.
permit the immersion of at least two test cylinders in the bath
Current edition approved July 1, 2010. Published November 2010. Originally
liquid up to their 85-mLgraduations.The bath shall be capable
approved in 2000. Last previous edition approved in 2005 as D6553–00(2005).
DOI: 10.1520/D6553-00R10.
of being maintained at a temperature of 54 6 1°C (see Note 2),
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
and shall be fitted with clamps, which hold the cylinder in a
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
position so that the longitudinal axis of the paddle corresponds
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. to the vertical center line of the cylinder during the stirring
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D6553 − 00 (2010)
operation.The clamps shall hold the cylinder securely while its with acetone and then with tap water. The glassware shall be
contents are being stirred. further cleaned with a suitable cleaning reagent. Rinse thor-
oughly with tap water and then with reagent water. Inspect the
6.3 Stirring Paddle, made of chromium-plated or stainless
cylinders for any residue or water droplets adhering to the
steel and conforming to the following dimensions: length, 120
inside walls. Both conditions indicate a need for additional
6 1.5 mm; width, 19 6 0.5 mm; thickness, 1.5 mm. It is
cleaning.
mounted on a vertical shaft of similar metal, approximately 6
mm in diameter, connected to a drive mechanism that rotates 9.2 Cleanthestirringpaddleandshaftwithabsorbentcotton
the paddle on its longitudinal axis at 1500 6 15 rpm. The or tissue wet with cleaning solvent and air dry. Care must be
apparatus is of such design that, when the cylinder is clamped taken not to bend or misalign the paddle assembly during the
in position and the paddle assembly is lowered into the cleaning operation.
cylinder, a positive stop engages and holds the assembly when
the lower edge of the paddle is 6 mm from the bottom of the 10. Procedure
cylinder. During the operation of the stirrer, the center of the
10.1 Heat the bath liquid to 54 6 1°C (see Note 2) and
bottom edge of the paddle shall not deviate more than 1 mm
maintain it at that temperature throughout the test.Add coolant
from the axis of rotation. When not in operation, the paddle
orbuffer(seeNote3)tothegraduatedcylinderuptothe40-mL
assembly can be lifted vertically to clear the top of the
mark, and then add to the same cylinder a representative
graduated cylinder.
sample of the oil (or fluid) under test until the top level of the
oil reaches the 80-mL mark on the cylinder. Place the cylinder
7. Reagents and Materials
in the bath, and allow the contents to reach bath temperature.
7.1 Purity of Reagents—Reagent grade chemicals shall be
Normally this will require about 10 min.
used in all tests. Unless otherwise indicated, it is intended that
NOTE 3—If initial volumetric measurements are made at room tempera-
all reagents shall conform to the specifications of the Commit-
ture, expansion occurring at the elevated test temperature will have to be
tee onAnalytical Reagents of theAmerican Che
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.