ASTM D5657-2007 Standard Test Method for Fluid Tightness Ability of Adhesives Used on Threaded Fasteners《螺纹紧固件用胶粘剂的流体密封能力的标准试验方法》.pdf

《ASTM D5657-2007 Standard Test Method for Fluid Tightness Ability of Adhesives Used on Threaded Fasteners《螺纹紧固件用胶粘剂的流体密封能力的标准试验方法》.pdf》由会员分享，可在线阅读，更多相关《ASTM D5657-2007 Standard Test Method for Fluid Tightness Ability of Adhesives Used on Threaded Fasteners《螺纹紧固件用胶粘剂的流体密封能力的标准试验方法》.pdf（2页珍藏版）》请在麦多课文档分享上搜索。

1、Designation: D 5657 07Standard Test Method forFluid Tightness Ability of Adhesives Used on ThreadedFasteners1This standard is issued under the fixed designation D 5657; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of la

2、st 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 the abilityof adhesives used for locking and sealing threaded fasteners, t

3、omake leak-tight assemblies.1.2 The values stated in inch-pound units are to be regardedas the standard. The SI units given in parentheses are forinformation only.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the

4、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:2D 907 Terminology of Adhesives2.2 SAE Standard:SAE J429 Mechanical and Material Requirements for Ex-ternally

5、Threaded Fasteners32.3 Federal Specification:FF-N-836 Nut: Square, Hexagon, Cap, Slotted, Castle,Knurled, Welding and Single Ball Seat43. Terminology3.1 Definitions:3.1.1 Many of the terms in this test method are defined inTerminology D 907.4. Summary of Test Method4.1 This test method consists of s

6、ubjecting an adhesive-cured nut-and-bolt assembly to 50-psi pressure and determin-ing the cured adhesives ability to make the assembly leak-tight.5. Significance and Use5.1 Thread-locking adhesives are often used on threadedfasteners in sealing applications. This test method is used todetermine an a

7、dhesives ability to provide sealing capabilitiesunder specified conditions.6. Apparatus6.1 Test Fixture, as shown in Fig. 1, consisting of thefollowing:6.1.1 Pressure Vessel, provided with a means of filling withsoapy water, capable of applying, withstanding, and measuring50-psi (345-kPa) pressure o

8、f soapy water, and equipped withan air inlet and a gage for supplying and reading the pressure.6.1.2 Metal Plate, flat, smooth approximately12 in. (12.7mm) thick, drilled with a38-in. (9.5-mm) hole at its center. Thehole is counterbored58-in. (15.9-mm) diameter by116 in. (1.6mm) deep. The metal plat

9、e is welded to the pressure vessel.6.1.3 Rubber O-Ring or Flat Rubber Gasket,58-in. (15.9-mm) outside diameter by716-in. (11.1-mm) inside diameter by332 in. (2.4 mm) thick.6.1.4 Metal Plate, used as a means of pressing the nut of theadhesive-treated test specimen against the O-ring or gasketwith suf

10、ficient force to prevent leakage between the top plateand the washer face of the test specimen nut.6.1.5 Studs and Nuts, used to clamp the fixture.7. Test Specimens7.1 Steel Bolts38-in. size, Grade 5, in accordance withSAE J429, having a minimum length of 1 in. (25.4 mm) witha hexagonal head. Use th

11、read series Unified National Fine, 241This test method is under the jurisdiction of ASTM Committee D14 onAdhesives and is the direct responsibility of Subcommittee D14.80 on MetalBonding Adhesives.Current edition approved Oct. 1, 2007. Published October 2007. Originallyapproved in 1995. Last previou

12、s edition approved in 2001 as D 5657 - 01.2For referenced 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.3Available from Soc

13、iety of Automotive Engineers (SAE), 400 CommonwealthDr., Warrendale, PA 15096-0001, http:/www.sae.org.4Available from U.S. Government Printing Office Superintendent of Documents,732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http:/www.access.gpo.gov.1Copyright ASTM International, 100

14、Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.threads per inch (38 by 24 UNF), or Unified National Coarse,16 threads per inch (38 by 16 UNC) as agreed upon betweenthe user and the manufacturer of the adhesive.7.2 Steel NutsType II, Style 4, nominally2164 in. (8.3mm)

15、 thick, conforming to Federal Specification FF-N-836.8. Procedure8.1 Degrease all nut-and-bolt test specimens, keep themclean, and store at 70 to 77F (21 to 25C) at a relativehumidity of less than 20 %.8.2 Determine fluid tightness on not less than five speci-mens as follows:8.2.1 Apply test adhesiv

16、e to the threads of the test bolt andnut E. Place the test bolt through the center hole in plate D andscrew the test nut onto the bolt by hand, allowing three threadsto protrude.8.2.2 Cure the adhesive in accordance with the manufactur-ers instructions, with the test specimens standing vertically on

17、the bolt heads.8.2.3 Cure the resulting assemblies for 24 to 26 h at 70 to77F (21 to 25C) and 45 to 55 % relative humidity.8.2.4 After curing, position the fixture with the top plate upand fill the pressure vessel with room-temperature water towhich sufficient soap or synthetic wetting agent has bee

18、n addedto reduce its surface tension.8.2.5 Set the O-ring or gasket and the test specimen in placeand swivel the bottom plate over the specimen and thetightening studs.8.2.6 Clamp the test specimen in position by tightening thenuts of the studs against the bottom plate, forcing the nut of thetest sp

19、ecimen against the O-ring or gasket.8.2.7 Reposition the apparatus so that the fluid level isabove the test specimen.8.2.8 Apply 50 6 5-psi pressure to the water and determineif leakage occurs between the threads of the test nut and boltwithin 1 min of applying the pressure.9. Report9.1 Report the f

20、ollowing information:9.1.1 Complete identification of the adhesive tested, includ-ing type, source, date manufactured, manufacturers codenumbers, and form,9.1.2 Number of specimens tested, and9.1.3 Number of specimens that leaked.10. Precision and Bias10.1 Precision and bias for this test method are

21、 beingdetermined and will be available by April 2005.11. Keywords11.1 adhesive; fluid tightness; sealing; threadlockingASTM 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 expressl

22、y advised 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, e

23、ither reapproved 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 atte

24、nd. 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 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).FIG. 1 Fluid-Tightness Test JigD5657072