ASTM D3342-22

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Designation: D3342 − 90 (Reapproved 2017) D3342 − 22
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 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
⁄2 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use. For specific warning statements, see 6.27.2, A2.1, and A2.5.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
D1126 Test Method for Hardness in Water
D1293 Test Methods for pH of Water
D4175 Terminology Relating to Petroleum Products, Liquid Fuels, and Lubricants
3. Terminology
3.1 Definitions:
3.1.1 For definitions of terms used in this test method, refer to Terminology D4175.
4. Summary of Test Method
4.1 The rolling oil is dispersed in a standard test water, in a standard container, under standard conditions of time, agitation, and
concentration. When the agitation is stopped, the resulting decrease in oil concentration at a specified point near the bottom of the
container is measured at certain time intervals and plotted.
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcommittee
D02.L0.04 on Metal Deformation Fluids and Lubricants.
Current edition approved June 1, 2017Nov. 1, 2022. Published July 2017November 2022. Originally approved in 1990. Last previous edition approved in 20122017 as
D3342 – 90 (2012).(2017). DOI:10.1520/D3342-90R17. DOI:10.1520/D3342-22.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
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D3342 − 22
5. Significance and Use
5.1 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.
6. Apparatus
3,4
6.1 Mixing Beaker, 5800 mL 5800 mL capacity, made of stainless steel, modified as shown in Annex A2.
4,5
6.2 Combination Agitator and Temperature Control Device.
4,6
6.3 Babcock Centrifuge Bottles —The 165 mm cream test bottle, with 5 mL-neck permitting oil concentration readings from 0 %
to 10 % is preferred. These bottles should be marked for filling to the 50 mL level which will normally be found close to the
junction of body and neck. Sulfonation bottles may also be used.
6.4 Centrifuge, capable of whirling the Babcock bottles at sufficient speed to give a clean separation of oil and water under the
test conditions. A centrifuge giving a relative centrifugal force (rcf) of 5009 at the bottle tips has been found to give good
separations in 10 min.
6.5 To calculate the rpm required to achieve the stated rcf, use the following formula:
rpm 5 1335=rcf/d (1)
where:
rcf = relative centrifugal force,
d = diameter of swing measured between tips of opposite tubes when in rotating position, mm, and
rpm = revolutions per minute.
6.6 Stop Watch, or similar timing device.
7. Reagents
7.1 Buffered Synthetic Hard Water, prepared in accordance with Annex A2.
7.2 Sulfuric Acid, 30 % by volume in water. Lower acid concentrations may be used if clean separations are obtained.
(Warning—Sulfuric acid is poison, corrosive, and a strong oxidizer.)
8. Procedure
8.1 The flow rate of the combination agitator and temperature control device should be between 3500 mL ⁄min and 4500 mL ⁄min.
The flow rate should be measured with a piece of 6.35 mm inside diameter bore plastic tubing temporarily attached to the pump
outlet and removed after this measurement. During the test, do not use attachments such as tubing, stopcocks, pinch clamps, etc.
on the pump outlet.
8.2 Add 4275 mL of test water to the beaker, install the agitator-temperature control device, and adjust it for 60 °C temperature.
When the water reaches this temperature, add 225 mL of the rolling oil to be tested. (The oil sample should be sufficiently agitated
to assure complete mixing of oil components. With most materials, sufficient heat to melt all of the components will also be
required, however, at no time should the temperature exceed 60 °C.) Continue controlled temperature agitation for 30 min.
The sole source of supply of the apparatus (beaker #2-584F) known to the committee at this time is Fisher Scientific.
If you are aware of alternative suppliers, please provide this information to ASTM International Headquarters. Your comments will receive careful consideration at a
meeting of the responsible technical committee, which you may attend.
The sole source of supply of the apparatus (the Porta-temp) known to the committee at this time is Precision Scientific Co.
The sole source of supply of the apparatus (cream test bottle No. 12-705 or sulfonation bottle No. 6-904) known to the committee at this time is Fisher Scientific.
D3342 − 22
8.3 While agitation continues, fill one Babcock bottle for an emulsion concentration control test, as follows: Open the pinch clamp
on the beaker sample tap for 2 s to 3 s. Discard about 20 mL of emulsion to flush the tap, and attempt to come as cleanly as possible
to the end. Close the pinch clamp, place the hose tip in a Babcock bottle, and fill it at a rapid flow rate to the 50 mL mark.
8.4 Stop agitation and restart the stop watch at zero time. Fill Babcock bottles as described above at 30 s and 1 min, 2 min, 4 min,
8 min, 16 min, and 32 min elapsed time. It is permissible to stop sampling sooner or later (such as at 16 min or 64 min) if such
data are desired, but earlier sample times may not be omitted even for very stable emulsions, because the sampling process slightly
affects further settling rates. For each sample, purge the sample tap several seconds ahead of time so that filling the Babcock bottle
starts at the correct time.
8.5 Fill each Babcock bottle to the upper graduation line with 30 % by volume sulfuric acid. Swirl while filling. Spin in the
centrifuge for 10 min, or until a clean separation is obtained. It may be necessary to use a different mineral acid or to heat the filled
Babcock bottles to facilitate
...