1、Designation: D4627 92 (Reapproved 2007) D4627 12Standard Test Method forIron Chip Corrosion for WaterDilutableWaterMiscibleMetalworking Fluids1This standard is issued under the fixed designation D4627; the number immediately following the designation indicates the year oforiginal adoption or, in the
2、 case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope Scope*1.1 This test method covers evaluation of the ferrous corrosion control characterist
3、ics of waterdilutablewatermisciblemetalworking 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.1.2.1 ExceptionNote 1 contains inch-pound units since the drill sizes and feed rates do not have readily available metri
4、cequivalents.1.2.2 ExceptionU.S. Standard sieve sizes include mesh values.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine
5、 the applicability of regulatorylimitations prior to use.2. Terminology2.1 Definitions:2.1.1 rust, ncorrosion product consisting primarily of hydrated iron oxides.2.2 Definitions of Terms Specific to This Standard:2.2.1 breakpoint, nweakest concentration of the water-miscible metalworking fluid test
6、ed that leaves no rust stain on the filterpaper.3. Summary of Test Method3.1 Cast iron chips are placed in a petri dish containing a filter paper and diluted metalworking fluid. The dish is covered andallowed to stand overnight. The amount of rust stain on the filter paper is an indication of the co
7、rrosion control provided by thefluid.4. Significance and Use4.1 The results obtained by this test are a useful guideline in determining the ability of water diluted water-misciblemetalworking fluids to prevent or minimize rust under specific conditions. There is usually a relationship between the re
8、sults ofthis test and a similar ability of the subject coolant to prevent rust on nested parts or in drilled holes containing chips, etc. It mustbe understood, however, that conditions, metal types, etc. found in practice will not correlate quantitatively with these controlledlaboratory conditions.
9、The procedure may not be able to differentiate between two products with poor rust control due to the widespacing between test dilutions.5. Apparatus5.1 Disposable Petri Dishes, 35 by 10 mm plastic, with lids No. 8-757-100A.lids.5.2 Glass-Fiber Filter Paper, Whatman No. 934-AH, 1.5 m particle retent
10、ion rating, 3.2-cm diameter.5.3 Glass Stirring Rod.5.4 Spatula.1 This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products and Lubricants and is the direct responsibility of Subcommittee D02.L0.01on Metal Removal Fluids and Lubricants.Current edition approved May 1, 2007
11、June 1, 2012. Published July 2007October 2012. Originally approved in 1986. Last previous edition approved in 20022007 asD4627D462792(2007).92 (2002). DOI: 10.1520/D4627-92R07.10.1520/D4627-12.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indic
12、ation of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be co
13、nsidered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States15.5 Pipettes, 5 mL.5.6 Glass Bottle, 4-oz. with cap.5.7 Balance, accurate to 1 mg.5.8 Grad
14、uated Cylinder, 50 mL.5.9 Volumetric Flask, 1 L.5.10 Forceps.5.11 U.S. Standard Sieve, 18-mesh (1.0-mm sieve openings), stainless steel.6. Reagents and Materials6.1 Gray Cast Iron Drilling Chips. 2NOTE 1The chips are made from Class 30 gray cast iron, iron (UNS F10006), as cast. The structure is mos
15、tly pearlite with small amounts of ferriteand type A graphite. Brinell hardness is 179217. The chips are made using a clean, oil free jobbers length high speed drill of 29/64 in. diameter with118 plain point, 29 helix and 1215 clearance. Rotational speed should be 500 rpm at a feed rate of 0.015 in.
16、/rev. Hand feeding is not permissible.The chips are sieved on 5 and 18-mesh sieves and those retained on the 18-mesh sieve are immediately stored in airtight pint glass bottles. Each drillingis given a batch number. The bottle labels bear this batch number and the date of filling.6.2 Synthetic Hard
17、Water, 20,000 mg/L stock solution prepared by dissolving 29.4 g reagent grade (ACS standard) CaCl22H2Oin 1 L of freshly boiled distilled water. A moderate hardness water is necessary in this test (100 ppm as CaCO3, 71 mg/L aschloride), and can be prepared at the time of the test by diluting the stoc
18、k hard water 0.5 % in distilled water.6.3 Metalworking Fluid of Interest.7. Preparation of Diluted Metalworking Fluid7.1 Prepare 50 mL of fluid at each desired concentration by weight % in the 100 mg/L hardness water described above. Thewater must be at room temperature as described in 7.18.1. Alway
19、s add the metalworking fluid concentrates into the water.7.2 The dilutions tested will be in weight % as follows:0.5, 1, 1.5, 2, 2.5, 3, 4, 5, 7 and 10 %Each dilution must be separately prepared. Stock emulsions subsequently diluted must not be used.7.3 Cap the bottle (5.6) and shake vigorously unti
20、l dispersion is complete.8. Procedure8.1 Make the test in a room free from corrosive fumes, away from direct sunlight, and a room temperature of 20C to 25C(68F to 77F).25C.8.2 Sieve the cast iron chips (6.1) on the 18-mesh screen, screen (5.11), rejecting the fines and any chips showing signs of rus
21、t.NOTE 2Do not allow the chips to come in contact with the skin.NOTE 3Store the chips in an airtight glass bottle.8.3 Using forceps, forceps (5.10), place the filter paper (5.2) in the bottom half of a clean, dry petri dish. dish (5.1). Place thesmooth side of the paper down,down and the rough side
22、up to contact the chips.8.4 Measure 5.0 mL of diluted metalworking fluid into the dish.8.5 Weigh Using the spatula (5.4) to handle the chips, weigh 4.0 6 0.1 g of cast iron chips and sprinkle into the petri dish. Usethe stirring rod (5.3) to be certain all chips are submerged, all air bubbles releas
23、ed, and the chips are evenly distributed.8.6 Cover the dish with its lid and allow to stand for 2024 h.8.7 Drain the fluid from the dish. Invert the dish on its lid and tap to remove the chips.8.8 Rinse the filter paper with running tap water for about 5 s to remove any discoloration due to the flui
24、d.8.9 After rinsing, estimate the percent of the filter paper area which was stained by rusting chips. This is done by visualexamination (without magnification) of the side of the paper that was in contact with the chips.8.10 The “breakpoint” is defined as the weakest concentration tested that left
25、no rust stain on the filter paper. This value maybe used to compare the rust inhibiting properties of various fluids.2 The sole source of supply of the drilling chips known to the committee at this timeIron chips produced and packaged according to the directions given in Note 1 isTechsolve, Technica
26、l Center, 1111 Edison Drive, Cincinnati, OH 45216-2265. If you are aware of alternative suppliers, please provide this information to ASTM InternationalHeadquarters. Your comments will receive careful consideration at a meeting of the responsible technical committee,are commercially available.1 whic
27、h you may attend.D4627 1229. Report9.1 Report as “breakpoint” the weakest concentration tested that left no rust stain on the filter paper.9.2 Report the estimated percentage of rust stain on the filter paper for each concentration tested.10. Precision and Bias310.1 PrecisionThe precision of this te
28、st method as determined by the statistical examination of interlaboratory test results isas follows:follows (see Table 1):10.2 RepeatabilityThe difference between two successive test results obtained by the same operator with the same apparatusunder constant operating conditions on identical test ma
29、terial would, in the long run, in the normal and correct operation of thetest method exceed the following values only in one case in twenty.Repeatability50.64 for sample Nos. 1, 3, 4, and 5 (1)10.3 ReproducibilityThe difference between two single and independent results obtained by different operato
30、rs working indifferent laboratories on identical test material would, in the long run, exceed the following values only in one case in twenty.Reproducibility51.85 for sample Nos. 1, 3, 4, and 5 (2)10.4 BiasThe procedure in this test method for iron chip corrosion test for waterdilutablewatermiscible
31、 metalworking fluidshas no bias because the Corrosion Values can be defined only in terms of a test method.3 Supporting data have been filed at ASTM International Headquarters and may be obtained by requesting Research Report RR:D02-1746.TABLE 1 Breakpoint Replicate ResultsREPLICATE RESULTS_ Data_ P
32、rogram_ Form APage_of_Date_Instructions:X1 is 1st resultX2 is 2nd resultSum total labsm = 10Sum total samplesn = 6SAMPLE NUMBER (j)1 2 3 4 5 6 7 8 9 10LABORATORYNUMBER(i)1 X1X25 %5 %10 %10 %2 %2.5 %2 %2.5 %3 %4 %10 %10 %2 X1X210 %10 %7 %7 %3 %3 %3 %4 %4 %4 %10 %10 %3 X1X22.5 %.10 %.3 %.3 %.5 %.10 %.
33、4 X1X23 %3 %7 %7 %2.5 %2.5 %3 %3 %3 %4 %10 %10 %5 X1X22 %2.5 %5 %10 %2.5 %2.5 %2.5 %2.5 %4 %4 %10 %10 %6 X1X22.5 %3 %10 %10 %3 %3 %2.5 %3 %5 %5 %10 %10 %7 X1X22 %2.5 %10 %10 %3 %2.5 %2 %2 %3 %3 %10 %10 %8 X1X22.5 %3 %5 %7 %3 %2.5 %3 %4 %2.5 %3 %7 %10 %9 X1X22.5 %2 %5 %7 %2.5 %2.5 %2.5 %2.5 %4 %4 %10
34、 %10 %10 X1X22 %2.5 %10 %10 %3 %3 %3 %3 %3 %3 %10 %10 %D4627 12311. Keywords11.1 corrosion test; ferrous corrosion test; iron chip corrosion test; metalworking fluid corrosion test; water dilutablewater-miscible fluids corrosion testSUMMARY OF CHANGESSubcommittee D02.L0 has identified the location o
35、f selected changes to this standard since the last issue(D462792(2007) that may impact the use of this standard.(1) Deleted footnote referencing Techsolve as sole supplier.(2) Added footnote informing user that iron chips are commercially available.(3) Replaced “water-dilutable” with “water-miscible
36、” in the title and throughout the text.(4) Added Terminology section.(5) Described apparatus generically where possible.(6) Added reference to the Research Report.(7) Added Report section.(8) Defined “rust.”(9) Defined “breakpoint.”(10) Added exceptions to use of SI units.(11) Deleted English units,
37、 with certain exceptions (see 1.2.1 and 1.2.2).ASTM 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 that determination of the validity of any such patent rights,
38、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 reapproved or withdrawn. Your comments are invited either for revi
39、sion 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 feel that your comments have not received a fair hearing you
40、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 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). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).D4627 124
