ASTM F1511-2011 Standard Specification for Mechanical Seals for Shipboard Pump Applications《船用泵机械密封件的标准规范》.pdf

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1、Designation: F1511 11An American National StandardStandard Specification forMechanical Seals for Shipboard Pump Applications1This standard is issued under the fixed designation F1511; 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 () 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 sh

3、ipboard 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 are

4、 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:2A108 Specification for Steel Bar,

5、 Carbon and Alloy, Cold-FinishedA182/A182M Specification for Forged or Rolled Alloy andStainless Steel Pipe Flanges, Forged Fittings, and Valvesand Parts for High-Temperature ServiceA240/A240M Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for PressureVessels

6、and for General ApplicationsA276 Specification for Stainless Steel Bars and ShapesA313/A313M Specification for Stainless Steel Spring WireA351/A351M Specification for Castings, Austenitic, forPressure-Containing PartsA436 Specification for Austenitic Gray Iron CastingsA494/A494M Specification for Ca

7、stings, Nickel and NickelAlloyA564/A564M Specification for Hot-Rolled and Cold-Finished Age-Hardening Stainless Steel Bars and ShapesA579/A579M Specification for Superstrength Alloy SteelForgingsA693 Specification for Precipitation-Hardening Stainlessand Heat-Resisting Steel Plate, Sheet, and StripA

8、744/A744M Specification for Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe ServiceB62 Specification for Composition Bronze or Ounce MetalCastingsB127 Specification for Nickel-Copper Alloy (UNSN04400) Plate, Sheet, and StripB164 Specification for Nickel-Copper Alloy Rod, Bar, andWire

9、B166 Specification for Nickel-Chromium-Iron Alloys(UNS N06600, N06601, N06603, N06690, N06693,N06025, N06045, and N06696)* and Nickel-Chromium-Cobalt-Molybdenum Alloy (UNS N06617) Rod, Bar, andWireB168 Specification for Nickel-Chromium-Iron Alloys(UNS N06600, N06601, N06603, N06690, N06693,N06025, N

10、06045, and N06696) and Nickel-Chromium-Cobalt-Molybdenum Alloy (UNS N06617) Plate, Sheet,and StripB271 Specification for Copper-Base Alloy CentrifugalCastingsB333 Specification for Nickel-Molybdenum Alloy Plate,Sheet, and StripB335 Specification for Nickel-Molybdenum Alloy RodB338 Specification for

11、Seamless and Welded Titanium andTitanium Alloy Tubes for Condensers and Heat Exchang-ersB348 Specification for Titanium and Titanium Alloy Barsand BilletsB367 Specification for Titanium and Titanium Alloy Cast-ingsB443 Specification for Nickel-Chromium-Molybdenum-Columbium Alloy(UNS N06625) and Nick

12、el-Chromium-Molybdenum-SiliconAlloy (UNS N06219)* Plate, Sheet,and StripB446 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 Bar1This specification is

13、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 April 1, 2011. Published April 2011. Originallyapproved in 1994. Last previous edition approved in 2009 as F1511

14、09. DOI:10.1520/F1511-11.2For 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.1Copyright ASTM International, 100 B

15、arr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.B472 Specification for Nickel Alloy Billets and Bars forReforgingB473 Specification for UNS N08020, UNS N08024, andUNS N08026 Nickel Alloy Bar and WireB505/B505M Specification for Copper Alloy ContinuousCastingsB584 Speci

16、fication for Copper Alloy Sand Castings forGeneral ApplicationsB637 Specification for Precipitation-Hardening Nickel Al-loy Bars, Forgings, and Forging Stock for High-Temperature ServiceB670 Specification for Precipitation-Hardening Nickel Al-loy (UNS N07718) Plate, Sheet, and Strip for High-Tempera

17、ture ServiceD1141 Practice for the Preparation of Substitute OceanWaterD1418 Practice for Rubber and Rubber LaticesNomenclatureD3294 Specification for Polytetrafluoroethylene (PTFE)Resin Molded Sheet and Molded Basic ShapesD3951 Practice for Commercial Packaging2.2 ASQ Standards:3ASQC Z1.4 American

18、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 RepresentationAN

19、SI 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) A744/A744M (CN-7M, CN-7MS)17-4 PH A564/A564M and A693 (UNS S174

20、00)AM 350 A579/A579M (Grade 61)NiCuAB164 (UNS N04400, N04405), B127,A494/A494M (Grades M35-1, M35-2,M-30H, M-25S)NiMo A494/A494M (Grades CW-2M, N-12 MV)NiMoB(Alloy B) B333 and B335 (UNS N10001, N10665,N10675)NiCrFeCNiCrMoCo B166, B168NiCr B637, B670NiCrMoCbDB443, B446Steel A108Austenetic grey iron A

21、436Titanium B338, B348, B367Nickel cast iron (ductile nodularor graphitic)A436 Type 1AMonel7or equivalent has been found satisfactory for this purpose.BHastelloy B or equivalent has been found satisfactory for this purpose.CInconel X7508or equivalent has been found satisfactory for this purpose.DInc

22、onel 6258or 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 Performance ranges for face combinations are listed inTable

23、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 special service requirements, hard on hard sealface comb

24、inations 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 materials when recommended by the supplier andapproved by

25、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 temperature. These grades are subse-quently impregnated with

26、 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 specification.6.4.2 Tungsten Carbide6 to 10 % nickel or cobal

27、t-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,essentially free of carbon, impervious structure requ

28、iring 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-neous silicon carbide essentially free of silicon and

29、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 impregnated with thermosetting resin.6.5 Elastomeric M

30、aterials: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 shipboardapplications. Consult the seal manufacturer for fluids

31、 not listed.6.5.2 Material Classification/Specification:6.5.2.1 NitrilePractice D1418, Class Designation NBR.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 MetalsCorporat

32、ion, Huntington, WV, USA.FIG. 7 Ordering Data ChecklistF1511 116FIG. 8 Stuffing Box ArrangementF1511 1176.5.2.2 ChloroprenePractice D1418, Class DesignationCR.6.5.2.3 FluorocarbonPractice D1418, Class DesignationFKM.6.5.2.4 Ethylene Propylene (EP)Practice D1418, ClassDesignation EPM/EPDM.6.5.2.5 Per

33、fluoroelastomerPractice D1418, Class Desig-nation FFKM.6.5.2.6 Polytetrafluorethylene (PTFE)SpecificationD3294.6.5.2.7 Corrugated graphite ribbon packing.6.5.3 Ethylene propylene (EP) rubber shall not be lubricatedwith any petroleum base substances. Check Section 11 andAppendix X1 or manufacturers r

34、ecommendations 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.FIG. 9 Stuffing Box DimensionsTABLE 1 Metal Component CompatibilityNOTE 1For fluids or materials

35、not covered here, seal selection to be mutually 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

36、X XBoiler feed X X X X XPotable X X X X X X XSalt 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.F1511 1187.1.1

37、The minimum operational life of a mechanical sealshall be 16 000 statistical hours provided that the equipment ismaintained and operated in accordance with the requirementsof Section 8.7.1.2 During any portion of the service life, the dynamicleakage shall not exceed five drops per minute for Class 0

38、seals.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 0, solid mechanicalseals. A leakage rate of five drops per min

39、ute 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 abrasion, unusual equipment vibra-tion, shaft end-play, or run-o

40、ut, 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 to the environ-ment is required such as hazardous fluids, fuel o

41、il, 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 Tandem or double mechanical seals may be installedin special appli

42、cations 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 be three light bands or better as measured under amonochromati

43、c, 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 split mechanical seal installations, a minimum of3 in. (76.2 mm)

44、 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 through 4, split mechanical seals, shall bedesigned to operate u

45、nder 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 normally be suppliedfor pressures greater than 150 psi (1.03 MPa)

46、 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 designed to operate satis-factorily under the following:8.5.1 Shaft s

47、leeve 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 maximum 60.015 in. (0.38 mm).8.5.4 Concentricity of stuffing bo

48、x 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 ControlsEnvironmental control con-siderations, such as flushing, cooling, he

49、ating, 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 specification where such inspections are deemednecessary to assure