ASTM D3342-90(2012)
(Test Method)Standard Test Method for Dispersion Stability of New (Unused) Rolling Oil Dispersions in Water
Standard Test Method for Dispersion Stability of New (Unused) Rolling Oil Dispersions in Water
SIGNIFICANCE AND USE
Each steel rolling mill and operation is particular as to the degree of stability of dispersion required to effect maximum efficiency of lubrication and cooling. This test method is designed to differentiate between coolants for this use. A similar situation is encountered with aluminum rolling mills, but significant differences in designated settling times be required outside the parameter of times used herein. Precision data have only been obtained relative to metastable dispersions for steel mill rolling oils.
SCOPE
1.1 This test method covers determination of the dispersion stability of dispersions of rolling oils in water. It is applicable to oils whose water dispersions are stable under moderate agitation, but which show at least some separation upon standing quiescent for ½ h, by rising of the oil particles.
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 6.2, A2.1, and A2.5.
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D3342 − 90 (Reapproved 2012)
Standard Test Method for
Dispersion Stability of New (Unused) Rolling Oil
Dispersions in Water
This standard is issued under the fixed designation D3342; 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 mum efficiency of lubrication and cooling. This test method is
designed to differentiate between coolants for this use. A
1.1 This test method covers determination of the dispersion
similar situation is encountered with aluminum rolling mills,
stability of dispersions of rolling oils in water. It is applicable
but significant differences in designated settling times be
to oils whose water dispersions are stable under moderate
required outside the parameter of times used herein. Precision
agitation, but which show at least some separation upon
data have only been obtained relative to metastable dispersions
standing quiescent for ⁄2 h, by rising of the oil particles.
for steel mill rolling oils.
1.2 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this
5. Apparatus
standard.
3,4
5.1 Mixing Beaker, 5800 mL capacity, made of stainless
1.3 This standard does not purport to address all of the
steel, modified as shown in Annex A2.
safety concerns, if any, associated with its use. It is the
5.2 Combination Agitator and Temperature Control
responsibility of the user of this standard to establish appro-
4,5
Device.
priate safety and health practices and determine the applica-
4,6
bility of regulatory limitations prior to use. For specific
5.3 Babcock Centrifuge Bottles —The 165-mm cream test
warning statements, see 6.2, A2.1, and A2.5.
bottle, with 5 mL-neck permitting oil concentration readings
from0to10 %ispreferred.Thesebottlesshouldbemarkedfor
2. Referenced Documents
filling to the 50-mL level which will normally be found close
2.1 ASTM Standards:
to the junction of body and neck. Sulfonation bottles may also
D1126 Test Method for Hardness in Water be used.
D1293 Test Methods for pH of Water
5.4 Centrifuge, capable of whirling the Babcock bottles at
sufficient speed to give a clean separation of oil and water
3. Summary of Test Method
under the test conditions. A centrifuge giving a relative
3.1 The rolling oil is dispersed in a standard test water, in a
centrifugal force (rcf) of 5009 at the bottle tips has been found
standard container, under standard conditions of time,
to give good separations in 10 min.
agitation, and concentration.When the agitation is stopped, the
5.5 To calculate the rpm required to achieve the stated rcf,
resulting decrease in oil concentration at a specified point near
use the following formula:
thebottomofthecontainerismeasuredatcertaintimeintervals
and plotted.
rpm 5 1335=rcf/d (1)
where:
4. Significance and Use
rcf = relative centrifugal force,
4.1 Each steel rolling mill and operation is particular as to
the degree of stability of dispersion required to effect maxi-
1 3
This test method is under the jurisdiction of ASTM Committee D02 on The sole source of supply of the apparatus (beaker #2-584F) known to the
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of committee at this time is Fisher Scientific.
Subcommittee D02.L0.04 on Metal Deformation Fluids and Lubricants. If you are aware of alternative suppliers, please provide this information to
Current edition approved April 15, 2012. Published April 2012. Originally ASTM International Headquarters. Your comments will receive careful consider-
approved in 1990. Last previous edition approved in 2006 as D3342–90(2006). ation at a meeting of the responsible technical committee, which you may attend.
DOI:10.1520/D3342-90R12. The sole source of supply of the apparatus (the Porta-temp) known to the
For referenced ASTM standards, visit the ASTM website, www.astm.org, or committee at this time is Precision Scientific Co.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM The sole source of supply of the apparatus (cream test bottle No. 12-705 or
Standards volume information, refer to the standard’s Document Summary page on sulfonation bottle No. 6-904) known to the committee at this time is Fisher
the ASTM website. Scientific.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D3342 − 90 (2012)
8. Calculation
d = diameter of swing measured between tips of opposite
tubes when in rotating position, mm, and
8.1 For the sample bottle taken as a control during agitation,
rpm = revolutions per minute.
calculate the percent of oil found. Since the calibrations on the
neck of the Babcock bottle usually range from 0 to 50, and
5.6 Stop Watch, or similar timing device.
correspond to 10 % oil in this test method, the difference in
scale reading between the top and bottom of the oil layer
6. Reagents
divided by 5 equals the percent oil. If this result is not close to
6.1 Buffered Synthetic Hard Water, prepared in accordance
5 %, the results are suspect until repeat runs verify the
with Annex A2.
reproducibility of the discrepancy. Significant amounts of
6.2 Sulfuric Acid, 30 vol % in water. Lower acid concen-
water soluble compounds in the oil sample might explain low
trations may be used if clean separations are obtained.
concentrations, for example. If, by the end of the 30 min
(Warning—Sulfuric acid is poison, corrosive, and a strong
agitation period, any significant amount of free oil or inverted
oxidizer.)
emulsion remains floating on the surface without being repeat-
edly drawn down into the water layer, the oil is probably too
7. Procedure
difficult to disperse for the test method to be applicable.
7.1 The flow rate of the combination agitator and tempera-
8.2 For each sample taken after agitation was stopped,
ture control device should be between 3500 and 4500 mL/min.
calculate the amount of oil found as a percent of the amount
The flow rate should be measured with a piece of 6.35-mm
found in the sample.
inside diameter bore plastic tubing temporarily attached to the
8.3 A single number used to describe the rolling oil emul-
pump outlet and removed after this measurement. During the
sion stability is the slope of a straight line, fit by the method of
test, do not use attachments such as tubing, stopcocks, pinch
least squares, to the base ten logarithms of both time, in
clamps, etc. on the pump outlet.
minutes, and the measured concentrations in percent. In
7.2 Add 4275 mL of test water to the beaker, install the
practice, to avoid taking the of zero, use the concentration plus
agitator-temperature control device, and adjust it for 60°C
1%.
temperature. When the water reaches this temperature, add
8.4 The estimate of the Slope b, for an experimental trial is
225 mL of the rolling oil to be tested. (The oil sample should
easily obtained by completing the following worksheet.
be sufficiently agitated to assure complete mixing of oil
Log Time
components. With most materials, sufficient heat to melt all of
Log Concentration+1%
the components will also be required, however, at no time
Time Actual Coded (X) (Y) XY
should the temperature exceed 60°C.) Continue controlled 0.5 −0.30103 −0.90309
1.0 0.0 −0.60206
temperature agitati
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.