ASTM F607-2003 Standard Test Method for Adhesion of Gasket Materials to Metal Surfaces《衬垫材料粘结到金属表面的粘附性的标准试验方法》.pdf

1、Designation: F 607 03Standard Test Method forAdhesion of Gasket Materials to Metal Surfaces1This standard is issued under the fixed designation F 607; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A num

2、ber in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This test method provides a means of determining thedegr

3、ee to which gasket materials under compressive loadadhere to metal surfaces. The test conditions described areindicative of those frequently encountered in gasket applica-tions. Test conditions may also be modified in accordance withthe needs of specific applications as agreed upon between theuser a

4、nd the producer. The maximum temperature recom-mended for this test method is 205C (400F).1.2 The values stated in SI units are to be regarded asstandard. The values in parentheses are for information only.1.3 This standard does not purport to address all of thesafety concerns, if any, associated wi

5、th its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:F 38 Test Methods for Creep Relaxation of a Gasket Mate-rial2F 104

6、Classification System for Nonmetallic Gasket Mate-rials23. Summary of Test Method3.1 The procedure described in this test method involvesplacing a specimen of a gasket material between flat platens ofthe desired metal, loading the assembly, and subjecting it to aspecified set of conditions. The tens

7、ile force required to part theplaten is measured in newtons or pounds-force and is recordedalong with the calculated stress (force per unit area) inmegapascals or pounds-force per square inch of gasket surface.NOTE 1This tensile force required to separate the platens may be inexcess of 8896 N (2000

8、lbf).NOTE 2This fixturing also provides for the measurement of creeprelaxation in accordance with Method B of Test Methods F 38.4. Significance and Use4.1 This test method provides terms such as megapascals orpounds-force per square inch of gasket surface for expressingthe extent of adhesion applica

9、ble to all materials within thescope of Classification System F104. Under certain conditions,adhesion develops when gasket materials are confined in acompressed state between metal flanges. Adhesion is importantas an index of ease of removal of a gasket material. Since othervariables may enter into

10、the performance in an application, theresults obtained should be correlated with field results. Atypical set of conditions is described in this test method. Thistest method may be used as an acceptance test when agreedupon between the user and the producer.5. Apparatus5.1 Circulating Air Oven, capab

11、le of maintaining 100 62C (212 6 3.6F) or other specified temperature as agreedupon between the user and the producer.5.2 Test Fixture,3composed of two platens with holes 180apart on the side of each platen, a calibrated bolt, washer, nut,(in accordance with the fixture in Test Method B of TestMetho

12、ds F 38) a dial indicator assembly, steel dowel pins, anda steel yoke or similar device to grip the dowel pins. The yoke,in turn, is attached to the grips of a test machine that willprovide the capability of applying a tensile force perpendicularto the plane of the platen surface. See Fig. 1. Standa

13、rd platensurface is smooth (as obtained using 8/0 dry garnet paper, referto section 6.2), however, other surface finishes may be speci-fied as agreed upon between the user and the producer.5.3916 in. Box End Wrench.5.4 Tension Tester, capable of a rate of separation of grips of1.3 mm (0.05 in.)/min

14、equipped with a recording or a maxi-mum indicating device.5.5 Tension Adapters, that is, upper and lower yokes.5.680 Dry Garnet Paper.5.7 Molybdenum Disulfide, in powder or spray form.6. Test Specimens6.1 Three circular test specimens of material shall be tested.Care should be taken to cut cleanly,

15、with minimum burrs or1This test method is under the jurisdiction of ASTM Committee F03 on Gasketsand is the direct responsibility of Subcommittee F03.40 on Chemical Test Methods.Test apparatus prints are available at ASTM Headquarters.Current edition approved Sept. 10, 2003. Published October 2003.

16、Originallyapproved ini 1979. Last previous edition approved in 1996 as F 607 96.2Annual Book of ASTM Standards, Vol 09.02.3Composite test fixture including yokes available from Metal Samples Co. Inc.,P.O. Box 8, Munford, AL 36268, have been found suitable.1Copyright ASTM International, 100 Barr Harb

17、or Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.loose fibers. The surface of the material shall be kept clean,free of oil deposits or foreign material. No substances shall beused during the cutting operation for lubrication of the die orfor any other purpose where they may com

18、e in contact with thespecimen. Specimens shall be cut with an inside diameter of32.25 to 32.31 mm (1.270 to 1.272 in.) and an outside diameterof 51.7 to 51.9 mm (2.035 to 2.045 in.).6.2 The metal platens to be used in the test shall be preparedby removing all traces of previously tested gasket mater

19、ial. The8/0 dry garnet paper, which has been fastened to a hard, smoothsurface with the grit side facing up and held in a horizontalposition, shall be used to provide the platen finish. The metalplaten shall be firmly grasped or held by means of a suitableholder and the surface to be finished shall

20、be rubbed against thegarnet paper. A reciprocating motion shall be used in a patternof a figure eight and shall be continued until the platen has auniform finish. If a serrated or non-standard platen surface isused then a soft bronze brush may be used for cleaning, and insuch cases the surface finis

21、h should be measured using asuitable device prior to the next test. The platen shall then bewashed clean with a laboratory grade of acetone to completethe removal of any foreign substance. Care should be takenafter cleaning the platens to handle them by the edge prior toassembly for test. See 8.1 fo

22、r time limitation after cleaning.7. Conditioning7.1 Condition the cut specimens in accordance with theprocedure described for their classification in accordance withClassification System F104. The conditioning may be modifiedin accordance with the needs of specific applications as agreedupon between

23、 the user and the producer.7.2 Hold the test fixture assemblymetal platens, cali-brated bolt, washer, and nut at 21 to 27C (70 to 80F) for aperiod of at least 4 h immediately prior to assembly.8. Procedure8.1 Assemble the platens within 30 min after cleaning withthe conditioned gasket specimens to f

24、orm a sandwich with thespecimen carefully centered between the platens. Care shouldNOTEThe platens are flat, circular plates of the designated metal having a diameter of 76 mm (3 in.) and a minimum thickness of 25.4 mm (1 in.).A hole 10.3 mm (0.405 in.) in diameter shall be drilled through the cente

25、r of each platen. The platens shall be chamfered slightly on all edges. Both sidesshall be machined sufficiently to assure good parallelism of the surfaces. One side of each platen shall be finished to a profile of 60 in. Ra(Roughnessabsolute) maximum (gasket side) utilizing a uniform finishing proc

26、edure as agreed upon by the participating laboratories.FIG. 1 Composite Test Assembly for Adhesion of Gasket Materials to Metal SurfacesF607032be taken that the dowel pin holes in one platen are positioned90 apart from the dowel pin holes in the second platen.8.2 Lubricate the washer and the threads

27、 of the calibratedbolt very lightly, using molybdenum disulfide in powder orspray form. (Oil is not recommended.) Carefully insert the boltthrough the two platens, the gasket, and the washer, andscrew on the nut finger tight. Take care to avoid contaminationof either the gasket or platen surface wit

28、h the lubricant.8.3 After placing the box wrench in position on the nut,screw the dial indicator assembly onto the end of the calibratedbolt, finger tight, and set the indicator needle at the zeroreading.8.4 Apply the desired stress to the specimens by tighteningthe nut with the box wrench until the

29、 required dial indicatorreading is reached. Record the actual dial indicator reading(Do). Apply this stress in one continuous motion with amaximum loading time of 3 s. A bolt elongation of 0.1222 to0.1270 mm (0.00481 to 0.0050 in.) is typical for a compressiveforce of 26.7 kN (6000 lbf). In the case

30、 of Type 2 or Type 3gasket material, a lighter compressive force as may be agreedupon between the user and the producer may be used.8.5 Remove the dial indicator and box wrench.8.6 Place the platen/gasket assembly in a heated air-circulating oven for 22 h at 100 6 2C (212 6 3.6F), unlessotherwise sp

31、ecified.8.7 Remove the platen/gasket assembly from the oven andcool in a 40 to 60 % relative humidity and 21 to 27C (70 to80F) ambient environment. A fan should cool the assembly in1h.8.8 Reassemble the box wrench and dial indicator in accor-dance with 8.3.8.9 Loosen the nut without disturbing the d

32、ial indicatorassembly. Record the dial indicator reading (Df).8.10 If desired, calculate the percent creep relaxation asfollows:Do2 Df!/Do# 3 100 (1)8.11 Remove the nut, washer, and calibrated bolt from theplaten/gasket assembly, and test the assembly for gasketadhesion within 30 min after removal o

33、f the calibrated boltstress on the gasket specimen.8.12 Assemble the tension adapters and yokes, one adapterand yoke to each platen 90 from the other, and insert thedowel pins. In turn, position the assembly in the tensionloading machine. Take care to avoid introducing any stressthrough the platen i

34、nto the gasket in this step. Do not strike,rap, or shock the platens at any time.8.13 Determine the tensile load in newtons or pounds-forceto separate the platens (adhesion) at a jaw separation speed of1.3 mm (0.05 in.)/min. The unit stress in megapascals orpounds-force per square inch if desired, m

35、ay be calculated bydividing the load by the area of the test specimen, that is, 1290mm2(2.0 in.2).9. Report9.1 The report shall include the following:9.1.1 Identification and designation number of the gasketmaterial tested.9.1.2 Ambient temperature and relative humidity duringconditioning and during

36、 the test.9.1.3 Length of the test, h.9.1.4 Initial stress used and the specimen thickness.9.1.5 Percent creep relaxation for each specimen (if de-sired).9.1.6 Average of all the results recorded in 9.1.5 (if desired).9.1.7 The tensile force, N or lbf, required to separate theplatens for each specim

37、en (and unit stress if desired).9.1.8 Average of the results recorded in 9.1.7.9.1.9 Any tearing of the gasket specimen, pickoff of fibers,or agglomerates of material on either platen.9.1.10 Surface finish if using platens with a serrated ornon-standard surface.10. Precision and Bias410.1 The follow

38、ing data shall be used for judging theacceptability of results at 100C (212F):10.1.1 Repeatability:MaterialIdentificationAverage SeparationForce, N (lbf)Aluminum 556 (125)Steel 970 (218)Cast iron 1032 (232)10.1.2 Reproducibility:MaterialIdentificationCoefficient of VariationWithin Labora-toryBetween

39、 Labora-toriesAluminum 92.8 34.1Steel 41.3 30.8Cast iron 40.3 27.611. Keywords11.1 adhesion; gasket4Supporting data have been filed at ASTM International Headquarters and maybe obtained by requesting Research Report RR: F031006.F607033ASTM International takes no position respecting the validity of a

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42、r 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 shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copy

43、righted 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).F607034