ASTM D3342-90(2006)
(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 1/2 h, by rising of the oil particles.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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 hazard statements, see , , and .
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 2006)
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 designed to differentiate between coolants for this use. A
similar situation is encountered with aluminum rolling mills,
1.1 This test method covers determination of the dispersion
but significant differences in designated settling times be
stability of dispersions of rolling oils in water. It is applicable
required outside the parameter of times used herein. Precision
to oils whose water dispersions are stable under moderate
data have only been obtained relative to metastable dispersions
agitation, but which show at least some separation upon
for steel mill rolling oils.
standing quiescent for ⁄2 h, by rising of the oil particles.
1.2 The values stated in SI units are to be regarded as
5. Apparatus
standard. No other units of measurement are included in this
,
3 4
5.1 Mixing Beaker, 5800 mL capacity, made of stainless
standard.
steel, modified as shown in Annex A2.
1.3 This standard does not purport to address all of the
5.2 Combination Agitator and Temperature Control De-
safety concerns, if any, associated with its use. It is the
,
4 5
vice.
responsibility of the user of this standard to establish appro-
4,6
5.3 Babcock Centrifuge Bottles —The 165-mm cream test
priate safety and health practices and determine the applica-
bottle, with 5 mL-neck permitting oil concentration readings
bility of regulatory limitations prior to use. For specific hazard
from0to10 %ispreferred.Thesebottlesshouldbemarkedfor
statements, see 6.2, A2.1, and A2.5.
filling to the 50-mL level which will normally be found close
2. Referenced Documents to the junction of body and neck. Sulfonation bottles may also
be used.
2.1 ASTM Standards:
5.4 Centrifuge, capable of whirling the Babcock bottles at
D1126 Test Method for Hardness in Water
sufficient speed to give a clean separation of oil and water
D1293 Test Methods for pH of Water
under the test conditions. A centrifuge giving a relative
3. Summary of Test Method centrifugal force (rcf) of 5009 at the bottle tips has been found
to give good separations in 10 min.
3.1 The rolling oil is dispersed in a standard test water, in a
5.5 To calculate the rpm required to achieve the stated rcf,
standard container, under standard conditions of time, agita-
use the following formula:
tion, and concentration. When the agitation is stopped, the
resulting decrease in oil concentration at a specified point near
rpm 5 1335=rcf/d (1)
thebottomofthecontainerismeasuredatcertaintimeintervals
where:
and plotted.
rcf = relative centrifugal force,
4. Significance and Use d = diameter of swing measured between tips of oppo-
site tubes when in rotating position, mm, and
4.1 Each steel rolling mill and operation is particular as to
rpm = revolutions per minute.
the degree of stability of dispersion required to effect maxi-
mum efficiency of lubrication and cooling. This test method is
The sole source of supply of the apparatus (beaker #2-584F) known to the
This test method is under the jurisdiction of ASTM Committee D02 on committee at this time is Fisher Scientific.
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee If you are aware of alternative suppliers, please provide this information to
D02.L0 on Industrial Lubricants. ASTM International Headquarters. Your comments will receive careful consider-
Current edition approved July 1, 2006. Published August 2006. Originally ation at a meeting of the responsible technical committee, which you may attend.
´1 5
approved in 1990. Last previous edition approved in 2000 as D 3342–90 (2000) . 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 (2006)
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
5 %, the results are suspect until repeat runs verify the
6.1 Buffered Synthetic Hard Water, prepared in accordance
reproducibility of the discrepancy. Significant amounts of
with Annex A2.
water soluble compounds in the oil sample might explain low
6.2 Sulfuric Acid, 30 vol % in water. Lower acid concen-
concentrations, for example. If, by the end of the 30 min
trations may be used if clean separations are obtained.
agitation period, any significant amount of free oil or inverted
(Warning—Sulfuric acid is poison, corrosive, and a strong
emulsion remains floating on the surface without being repeat-
oxidizer.)
edly drawn down into the water layer, the oil is probably too
difficult to disperse for the test method to be applicable.
7. Procedure
8.2 For each sample taken after agitation was stopped,
7.1 The flow rate of the combination agitator and tempera-
calculate the amount of oil found as a percent of the amount
ture control device should be between 3500 and 4500 mL/min.
found in the sample.
The flow rate should be measured with a piece of 6.35-mm
8.3 A single number used to describe the rolling oil emul-
inside diameter bore plastic tubing temporarily attached to the
sion stability is the slope of a straight line, fit by the method of
pump outlet and removed after this measurement. During the
least squares, to the base ten logarithms of both time, in
test, do not use attachments such as tubing, stopcocks, pinch
minutes, and the measured concentrations in percent. In
clamps, etc. on the pump outlet.
practice, to avoid taking the of zero, use the concentration plus
7.2 Add 4275 mL of test water to the beaker, install the
1%.
agitator-temperature control device, and adjust it for 60°C
8.4 The estimate of the Slope b, for an experimental trial is
temperature. When the water reaches this temperature, add
easily obtained by completing the following worksheet.
225 mL of the rolling oil to be tested. (The oil sample should
Log Time
be sufficiently agitated to assure complete mixing of oil
Log Concentration+1%
components. With most materials, sufficient heat to melt all of Time Actual Coded (X) (Y) XY
the components will also be required, however, at no time
0.5 −0.30103 −0.90309
1.0 0.0 −0.60206
should the temperature exceed 60°C.) Continue controlled
2.0 0.30103 −0.30103
temperature agitation for 30 min.
4.0 0.60206 0.0
7.3 While agitation continues, fill one Babcock bottle for an
8.0 0.90309 0.30103
16.0 1.20412 0.60206
emulsion concentratio
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.