1、Designation: D 1662 92 (Reapproved 2007)An American National StandardStandard Test Method forActive Sulfur in Cutting Oils1This standard is issued under the fixed designation D 1662; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision,
2、the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers the determination of activesulfur in cutting oils. This test method applies to su
3、lfur reactivewith copper powder at a temperature of 150C (300F) incutting fluids containing both natural and added sulfur.NOTE 1It has not been established by ASTM Subcommittee D02.L0as to how the active sulfur content thus determined may relate to fieldperformance of the cutting fluid.1.2 The value
4、s stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate saf
5、ety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D 129 Test Method for Sulfur in Petroleum Products (Gen-eral Bomb Method)D 130 Test Method for Corrosiveness to Copper fromPetroleum Products by Copper Strip Te
6、st3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 active sulfursulfur in a cutting fluid that will reactwith metallic copper at a temperature of 149C (300F) underthe prescribed conditions.4. Summary of Test Method4.1 A portion of the sample is treated with copper powder at149C
7、 (300F). The copper powder is filtered from the mixture.Active sulfur is expressed as the difference between the sulfurcontents of the sample, as determined by Test Method D 129before and after treatment with copper.5. Significance and Use5.1 This test method measures the quantity of sulfur avail-ab
8、le to react with metallic surfaces to form solid lubricatingaids at the temperature of the test. Rates of reaction are metaltype, temperature, and time dependent.6. Apparatus6.1 The apparatus shall be the same as that described in TestMethod D 129 in addition to the following:6.2 Stirrer, constructe
9、d of glass in the form of an inverted T.A flat blade, approximate length 25 mm, height 6 mm,thickness 1 mm, shall be attached to a glass rod 6 mm indiameter, in such a way that the blade is symmetrical with therod and has its flat surface in the vertical plane. Alternatively,a glass-coated magnetic
10、stirring bar 9.5 by 34.9 6 2mm(38 by138 in.) can be used.6.3 Stirring ApparatusAn electric motor capable of main-taining a speed of 500 6 25 rpm. Alternatively, when using theglass-coated stirring bar, a combination magnetic stirrer-hotplate is required.6.4 Hot Plate, electric, or other convenient h
11、eat sourcecapable of maintaining the sample at a temperature of 150 63C (300 6 5F).6.5 Beaker, 200-mL, tall-form of heat-resistant glass, with apour-out spout.7. Materials7.1 The materials shall be the same as described in TestMethod D 129 in addition to the following:7.2 Copper Powder.8. Procedure8
12、.1 Determine the sulfur concentration of the sample to betested in accordance with Test Method D 129.1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products and Lubricants and is the direct responsibility of SubcommitteeD02.L0.01 on Metal Removal Fluids and Lubricants.
13、Current edition approved July 15, 2007. Published September 2007. Originallyapproved in 1959. Last previous edition approved in 2002 as D 166292(2002).This test method was prepared under the joint sponsorship of the AmericanSociety of Lubrication Engineers. Accepted by ASLE January 1969.2For referen
14、ced 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 website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West C
15、onshohocken, PA 19428-2959, United States.8.2 Place 50 6 2 g of sample in a 200-mL tall-form beaker,lower the stirrer to within 5 mm of the bottom of the beaker andadd 5 6 0.25 g of copper powder and heat to 150 6 2C (3006 5F) while stirring at 500 6 25 rpm. If a magnetic stirrer isused, rotate the
16、stirring bar at 500 6 25 rpm. When 150 6 2C(300 6 5F) is reached, add an additional 5 6 0.25 g copperpowder. Continue stirring at 150 6 2C (300 6 5F) for 30 61 min. At the end of this period, stop stirring and insert acopper strip prepared in accordance with Test Method D 130for 10 6 0.25 min. If th
17、ere is any evidence of stain on the strip,recommence stirring and add an additional 5 6 0.25 g ofcopper powder. Continue stirring the mixture at 150 6 2C for30 6 1 min.Again, insert a copper strip as previously stated for10 6 0.25 min. Repeat this procedure until the copper stripshows no stain, main
18、taining the temperature of the mixture at150 6 2C.8.3 Filter the sample through filter paper at the end of theheating period. The filtration apparatus may be placed in anoven maintained at 100 6 1C (212 6 2F) for more rapidfiltration.NOTE 2A filter paper sufficiently fine to prevent passage of anypa
19、rticulate matter must be used, as the presence of copper sulfide in thefiltrate will give erroneous results.8.4 Determine the sulfur content of the filtered sample usingTest Method D 129.9. Calculation9.1 Calculate the active sulfur concentration of the sampleas follows:Active sulfur, wt % 5 A 2 B (
20、1)where:A = weight % sulfur of the untreated sample, andB = weight % sulfur of the treated sample.10. Precision and Bias10.1 PrecisionIt is not practical to specify the precision ofthe procedure in this test method for measuring active sulfurbecause a round robin has not been completed.10.1.1 Work i
21、s underway to improve and determine theproper precision of this test method. Previously obtainedprecision on this test method is not known to have beenobtained in accordance with currently accepted guidelines.310.2 BiasThe procedure in this test method has no biasbecause values of active sulfur can
22、be defined only in terms ofa test method.11. Keywords11.1 active sulfur test; cutting oils; metalworking oilsASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised
23、that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reap
24、proved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you
25、 feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual
26、reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).3Filed at ASTM International Headquarters as Research Report RR: D021007.D 1662 92 (2007)2
