ASTM F1511-2007 Standard Specification for Mechanical Seals for Shipboard Pump Applications《船泵设施用机械密封件的标准规范》.pdf

1、Designation: F 1511 07An American National StandardStandard Specification forMechanical Seals for Shipboard Pump Applications1This standard is issued under the fixed designation F 1511; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revisio

2、n, 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 specification covers mechanical end-face seals forcentrifugal and positive displacement pumps for

3、 shipboard use.1.2 The following types of seals are not included in thisspecification: lip seals, oil seals, circumferential seals, orlabyrinth seals.1.3 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that

4、are provided for information onlyand are not considered standard. A companion hard metricstandard is in the process of preparation.1.4 Special requirements for U.S. Navy Shipboard PumpApplications are included in Supplement S1.2. Referenced Documents2.1 ASTM Standards:2A 108 Specification for Steel

5、Bar, Carbon and Alloy, Cold-FinishedA 182/A 182M Specification for Forged or Rolled Alloyand Stainless Steel Pipe Flanges, Forged Fittings, andValves and Parts for High-Temperature ServiceA 240/A 240M Specification for Chromium andChromium-Nickel Stainless Steel Plate, Sheet, and Stripfor Pressure V

6、essels and for General ApplicationsA 276 Specification for Stainless Steel Bars and ShapesA 313/A 313M Specification for Stainless Steel SpringWireA 351/A 351M Specification for Castings, Austenitic, forPressure-Containing PartsA 436 Specification for Austenitic Gray Iron CastingsA 494/A 494M Specif

7、ication for Castings, Nickel andNickel AlloyA 564/A 564M Specification for Hot-Rolled and Cold-Finished Age-Hardening Stainless Steel Bars and ShapesA 579/A 579M Specification for Superstrength Alloy SteelForgingsA 693 Specification for Precipitation-Hardening Stainlessand Heat-Resisting Steel Plate

8、, Sheet, and StripA 744/A 744M Specification for Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe ServiceB62 Specification for Composition Bronze or Ounce MetalCastingsB 127 Specification for Nickel-Copper Alloy (UNSN04400) Plate, Sheet, and StripB 164 Specification for Nickel-Copper

9、Alloy Rod, Bar, andWireB 166 Specification for Nickel-Chromium-Iron Alloys(UNS N06600, N06601, N06603, N06690, N06693,N06025, and N06045)* and Nickel-Chromium-Cobalt-Molybdenum Alloy (UNS N06617) Rod, Bar, and WireB 168 Specification for Nickel-Chromium-Iron Alloys(UNS N06600, N06601, N06603, N06690

10、, N06693,N06025, and N06045) and Nickel-Chromium-Cobalt-Molybdenum Alloy (UNS N06617) Plate, Sheet, and StripB 271 Specification for Copper-Base Alloy CentrifugalCastingsB 333 Specification for Nickel-Molybdenum Alloy Plate,Sheet, and StripB 335 Specification for Nickel-Molybdenum Alloy RodB 338 Spe

11、cification for Seamless and Welded Titanium andTitanium Alloy Tubes for Condensers and Heat Exchang-ersB 348 Specification for Titanium and Titanium Alloy Barsand BilletsB 367 Specification for Titanium and Titanium Alloy Cast-ingsB 443 Specification for Nickel-Chromium-Molybdenum-Columbium Alloy (U

12、NSN06625) and Nickel-Chromium-Molybdenum-Silicon Alloy (UNS N06219)* Plate, Sheet,and StripB 446 Specification for Nickel-Chromium-Molybdenum-Columbium Alloy (UNS N06625), Nickel-Chromium-Molybdenum-Silicon Alloy (UNS N06219), and Nickel-Chromium-Molybdenum-Tungsten Alloy (UNS N06650)*Rod and BarB 4

13、72 Specification for Nickel Alloy Billets and Bars forReforging1This specification is under the jurisdiction of ASTM Committee F25 on Shipsand Marine Technology and is the direct responsibility of Subcommittee F25.11 onMachinery and Piping Systems.Current edition approved May 1, 2007. Published June

14、 2007. Originallyapproved in 1994. Last previous edition approved in 2006 as F 1511 06.2For 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 Summar

15、y page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.B 473 Specification for UNS N08020, UNS N08024, andUNS N08026 Nickel Alloy Bar and WireB 505/B 505M Specification for Copper Alloy ContinuousCastingsB 584 Spec

16、ification for Copper Alloy Sand Castings forGeneral ApplicationsB 637 Specification for Precipitation-Hardening Nickel Al-loy Bars, Forgings, and Forging Stock for High-Temperature ServiceB 670 Specification for Precipitation-Hardening Nickel Al-loy (UNS N07718) Plate, Sheet, and Strip for High-Temp

17、erature ServiceD 1141 Practice for the Preparation of Substitute OceanWaterD 1418 Practice for Rubber and Rubber LaticesNomenclatureD 3294 Specification for Polytetrafluoroethylene (PTFE)Resin Molded Sheet and Molded Basic ShapesD 3951 Practice for Commercial Packaging2.2 ASQ Standards:3ASQC Z1.4 Am

18、erican Society of Quality, Quality Conform-ance Inspection2.3 ANSI Standards:4ANSI Y14.1 Drawing Sheet Size and FormatANSI Y14.2 Line Convention and LetteringANSI Y14.3 Multi and Sectional View DrawingsANSI Y14.5 Dimensioning and Tolerancing for Engineer-ing DrawingsANSI Y14.6 Screw Thread Represent

19、ationANSI Y14.26.3 Computer-Aided Preparation of ProductionDefinition Data, Terms and Definitions2.4 Military Standards:5MIL-S-901 Shock Tests, H.I. (High Impact); ShipboardMachinery, Equipment CF8,8A; CF8C; CF10)Alloyed stainless steel (cast) A 744/A 744M (CN-7M, CN-7MS)17-4 PH A 564/A 564M and A 6

20、93 (UNS S17400)AM 350 A 579 (Grade 61)NiCuAB 164 (UNS N04400, N04405), B 127,A 494/A 494M (Grades M35-1, M35-2,M-30H, M-25S)NiMo A 494/A 494M (Grades CW-2M, N-12 MV)NiMoB(Alloy B) B 333 and B 335 (UNS N10001, N10665,N10675)NiCrFeCNiCrMoCo B 166, B 168NiCr B 637, B 670NiCrMoCbDB 443, B 446Steel A 108

21、Austenetic grey iron A 436Titanium B 338, B 348, B 367Nickel cast iron (ductile nodularor graphitic)A 436 Type 1AMonelfvariant7 or equivalent has been found satisfactory for this purpose.BHastelloy B or equivalent has been found satisfactory for this purpose.CInconel X750fvariant8 or equivalent has

22、been found satisfactory for this purpose.DInconel 625fvariant8 or equivalent has been found satisfactory for this purpose.6.3 Face MaterialsMechanical seal-wearing faces shallbe selected to provide the desired performance and corrosionresistance for the specified design life of the seal.6.3.1 Perfor

23、mance ranges for face combinations are listed inTable 2.6.3.2 Face materials shall be of solid construction only; nooverlays, deposited coatings, or sprayed on coatings arepermitted.6.3.3 Carbon is preferred for one of the faces unless theservice is abrasive, dirty, or chemically active.6.3.4 For sp

24、ecial service requirements, hard on hard sealface combinations may be required. Face material combina-tions, such as silicon carbide versus silicon carbide, siliconcarbide versus tungsten carbide, and tungsten carbide versustungsten carbide, may be used as similar or dissimilar contact-ing face mate

25、rials when recommended by the supplier andapproved by the user.6.4 Face Material Specifications:6.4.1 CarbonSuitable for service as recommended by themanufacturer. A carbon seal grade is a material having carbon-aceous filler system comprised of pitch and resins, compactedand baked to a final temper

26、ature. These grades are subse-quently impregnated with resin until they become impervious.All available carbons may not be suitable for a particularapplication. Carbons considered for use in a particular appli-cation shall be checked for suitability in accordance with therequirements of this specifi

27、cation.6.4.2 Tungsten Carbide6 to 10 % nickel or cobalt-boundsolid tungsten carbide.6.4.3 Ceramic99.5 % minimum alumina ceramic suitablefor the service as recommended by the manufacturer.6.4.4 Silicon Carbide(a) Reaction-BondedSolid fine-grained reaction-bonded silicon carbide 8 to 12 % free silicon

28、,essentially free of carbon, impervious structure requiring noimpregnant. (b) Reaction-Bonded With GraphiteA compos-ite material of fine-grain reaction-bonded silicon carbide; 5 to10 % free silicon and 10 to 30 % graphite; impervious structurerequiring no impregnant. (c) Direct SinteredSolid homoge-

29、neous silicon carbide essentially free of silicon and carbon,impervious structure requiring no impregnant. (d) Direct Sin-tered Silicon CarbideContains 10 % free graphite. (e) Sili-conized Carbon GraphiteApproximately 0.025-in. (0.64-mm) thick conversion of silicon carbide on carbon substructureand

30、impregnated with thermosetting resin.6.5 Elastomeric Materials:6.5.1 Special care should be given to the selection andinstallation of elastomeric components, such as bellows andO-rings. One of the most important considerations for elas-tomers is fluid compatibility. Table 3 references most shipboard

31、applications. Consult the seal manufacturer for fluids not listed.7The term “Monel” and the Monel logo are trademarks of the Special MetalsCorporation, Huntington, WV, USA.8The term “Inconel” and the Inconel logo are trademarks of the Special MetalsCorporation, Huntington, WV, USA.FIG. 7 Ordering Da

32、ta ChecklistF 1511 076FIG. 8 Stuffing Box ArrangementF 1511 0776.5.2 Material Classification/Specification:6.5.2.1 NitrilePractice D 1418, Class Designation NBR.6.5.2.2 ChloroprenePractice D 1418, Class DesignationCR.6.5.2.3 FluorocarbonPractice D 1418, Class DesignationFKM.6.5.2.4 Ethylene Propylen

33、e (EP)Practice D 1418, ClassDesignation EPM/EPDM.6.5.2.5 PerfluoroelastomerPractice D 1418, Class Desig-nation FFKM.6.5.2.6 Polytetrafluorethylene (PTFE)SpecificationD 3294.6.5.2.7 Corrugated graphite ribbon packing.6.5.3 Ethylene propylene (EP) rubber shall not be lubricatedwith any petroleum base

34、substances. Check Section 11 andAppendix X1 or manufacturers recommendations before usingany lubricant.7. Performance Requirements7.1 Seal life shall be defined in terms of the time period inwhich the mechanical seal functions properly under its speci-fied service.7.1.1 The minimum operational life

35、of a mechanical sealshall be 16 000 statistical hours provided that the equipment ismaintained and operated in accordance with the requirementsof Section 8.FIG. 9 Stuffing Box DimensionsTABLE 1 Metal Component CompatibilityNOTE 1For fluids or materials not covered here, seal selection to be mutually

36、 agreed upon by seal manufacturer, pump supplier, and end user.NOTE 2 X = Suitable for use as seal components.FluidMaterialsABrass316 StainlessSteelNi-Cu Alloy 20Highly AlloyedStainlessSteelNi-Mo Ni-Cr-Mo-Cb Ni-Cr-FeFresh WaterDemineralized water X X X X XBoiler feed X X X X XPotable X X X X X X XSa

37、lt WaterSeawater X X X X XDistiller brine X X X XFuel OilNavy distillate X X X X X XJP-5 X X X X X XDiesel X X X X X XKerosene X X X X X XCrude oil X X X X X XLube oil X X X X X XSewage X X X X XASee Section 6 for material specifications.F 1511 0787.1.2 During any portion of the service life, the dy

38、namicleakage shall not exceed five drops per minute for Class 0seals.After initial installation, hydrostatic leakage shall be zerofor a 5-min period, when the equipment is subjected to systempressure.7.1.3 All split mechanical seals, Classes 1 through 4, mayexperience higher leakage rates than Class

39、 0, solid mechanicalseals. A leakage rate of five drops per minute shall beacceptable after completion of the manufacturers recom-mended break-in period.7.1.4 In special applications of extreme environmental pa-rameters, such as high temperature with limited cooling, highpressure/velocity, extreme a

40、brasion, unusual equipment vibra-tion, shaft end-play, or run-out, the pump and seal manufac-turers shall agree upon the best achievable minimum operatinglife requirements and leakage performance.7.1.5 Double or special seal arrangements may be requiredin applications in which zero product leakage t

41、o the environ-ment is required such as hazardous fluids, fuel oil, acids,chemicals, and sewage. Consult the seal manufacturer forrecommendations.8. Design Requirements Design Requirements8.1 Installation Arrangements:8.1.1 Type A mechanical seals shall be provided unlessotherwise specified.8.1.2 Tan

42、dem or double mechanical seals may be installedin special applications in which it is determined that a bufferfluid system is required for lubrication, containment, or safety.8.2 Finish and tolerance requirements for primary seal ringand mating ring surface flatness of Class 0 mechanicals sealsshall

43、 be three light bands or better as measured under amonochromatic, helium light source.8.3 Requirements for Installation of Classes 1 Through 4Split Mechanical Seals:8.3.1 Classes 1 through 4, split mechanical seals, may befurnished for shaft/sleeve diameters of 112 in. (38.1 mm) andabove.8.3.2 For s

44、plit mechanical seal installations, a minimum of3 in. (76.2 mm) of axial space, measured from the stuffing boxface to the first obstruction, shall be provided for Classes 2 and4 seals. Additional space, at least equal to the gland thickness,may be required for Classes 1 and 3 seals.8.3.3 Classes 1 t

45、hrough 4, split mechanical seals, shall bedesigned to operate under a minimum reverse differentialpressure condition of 15-in. Hg (50.8 kPa).8.4 The requirement for a balanced or unbalanced seal willvary dependent upon the combination of various design andperformance factors. Balanced seals shall no

46、rmally be suppliedfor pressures greater than 150 psi (1.03 MPa) unless the sealmanufacturer provides alternative recommendations for spe-cific applications. Selection of a balanced or unbalanced sealdesign must satisfy the performance requirements of Section 7.8.5 The mechanical seal shall be design

47、ed to operate satis-factorily under the following:8.5.1 Shaft sleeve surface finish for pusher-type seals shallbe 32 rms (0.80 m) maximum. Shaft sleeve surface finish fornonpusher seals shall be 64 rms (1.60 m) maximum.8.5.2 Shaft radial run-out 0.010 in. (0.25 mm) TIR maxi-mum.8.5.3 Shaft end-play

48、maximum 60.015 in. (0.38 mm).8.5.4 Concentricity of stuffing box bore to shaft axis 0.005in. (0.13 mm) TIR maximum. Gland plate design must accom-modate eccentricity stated herein.8.5.5 Perpendicularity of stuffing box face to shaft axis0.003 in. (0.08 mm) TIR maximum.8.6 Environmental ControlsEnvir

49、onmental control con-siderations, such as flushing, cooling, heating, and quenchingshall be specified by the seal manufacturer.9. Quality Assurance Provisions9.1 Quality SystemsMechanical seals shall be supplied inaccordance with ISO 9001.9.2 Responsibility for InspectionUnless otherwise speci-fied, the manufacturer is responsible for the performance of allinspection requirements. The manufacturer may use his own orany other facilities suitable for inspection. The purchaser(buyer) reserves the right to perform any of the inspections setforth in the spec