PS-PLATING譯文

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1、DAIMLERCHRYSLERCORPORATIONNO:PS-PLATINGProcessStandardDatePublished:2003-12-10CategoryCode:H-1Change:ZEASLReq.YesRestricted:No***ZINC-MECHANICALANDELECTROPLATED***機(jī)械鍍鋅與電鍍鋅1.0GENERAL總則1.1PurposeoftheStandard***本標(biāo)準(zhǔn)的目的***Thisstandardoutlinestheproceduresandrequirementsforelectroplatedzinc,andmec

2、hanicallyplatedzinccoatingsonironandsteelpartsforcorrosionprotection.本標(biāo)準(zhǔn)概述了有關(guān)鋼鐵零件的防腐蝕的電鍍鋅和機(jī)械鍍鋅涂層的工藝規(guī)程和要求。1.2PurposeoftheProcess***過(guò)程的用途***Thisstandardprovidestheproceduresandrequirementsforproducingelectroplatedzincdeposits.PartswithahardnessofHRC32orhigherMUSTbeelectroplatedaccordingtoPS-422

3、0whichrequiresamandatorybakeoperationtorelievehydrogenembrittlement.PS-4220isidenticaltoPS-79respectively,exceptforthemandatorybake.Thisstandardalsocoverstherequirementsformechanicallyplatedzincdeposits.ThefollowingProcessStandards,whichwereformerlyallindividualstandardsandarestillreferencedo

4、ndrawingsassuch,arecoveredbythisonestandard:本標(biāo)準(zhǔn)對(duì)生產(chǎn)電鍍鋅層提供了工藝規(guī)程和要求。硬度達(dá)到或大于HRC32的零件的電鍍“必須”按照PS-4220，其要求－強(qiáng)制烘培過(guò)程以消除氫脆性。除去強(qiáng)制烘培，PS-4220與PS-79完全相同。本標(biāo)準(zhǔn)同樣包含對(duì)于機(jī)械鍍鋅層的要求。本標(biāo)準(zhǔn)覆蓋，過(guò)去所有單獨(dú)的和至今圖紙上仍然涉及的以下標(biāo)準(zhǔn)：PS-79Zinc-ElectroplatedPS-4220Zinc-Electroplated-HardenedSteelPartsPS-1536Zinc-MechanicallyPlatedPS-79電鍍鋅PS

5、-4220電鍍鋅-硬化鋼P(yáng)S-1536機(jī)械鍍鋅1.3PartDrawings零件圖紙A.Requirementsshownonthepartdrawingshalltakeprecedenceovertherequirementsspecifiedinthisstandard.B.Unlessotherwisespecifiedonthedrawing,allbrazing,welding,machining,forming,andheattreatmentshallbecompletedbeforepartsorassembliesareplated.Stakingoperat

6、ionsmaybeperformedafterthepartsareplated.C.Thedesireddepositthicknessmustbespecifiedaftertheprocessstandardnumberusinga"code"designation.SeeSection2.3.2.D.Achromate,chemicalsurfacetreatment,PS-1207,isnormallyappliedtothedepositscoveredbythisstandardandshouldbereferencedonthedrawing.SeeSection

7、2.9.E.Thesymbolhasbeensubstitutedforthediamondsymbolinthisstandardtoidentifycriticalbutnon-regulatoryitemsthatrequirecontinuousStatisticalProcessControl(SPC).RefertoPS-7300.F.Thenotion"QARperPS-7300"shallappearinthePartDrawingStandardsB