TL 188-2016 螺纹对焊接飞溅的要求(EN).PDF

GroupstandardTL188

Issue2016-05

Class.No.:50231;61100

Descriptors:fastener,nuts,nut,bolts,bolt,weldingbeads,weldspatter,damageprotection,screw,internalthread,

externalthread,coatingadhesion,paintresidue,PFA,Perfluoroalkoxyalkane,FEP,Fluorinated

ethylenepropylene

MechanicalFasteners

ProtectionfromWeldSpatterandPaintResidueforInternalandExternal

Threads

Previousissues

TL188:2000-03,2007-10

Changes

ThefollowingchangeshavebeenmadetoTL188:2007-10:

–Standardcompletelyrevised

–All-aroundFEPcoatingincluded

–Section3.3Analysisofthecoatingmaterialincluded

–Technicalresponsibilityupdated

1Scope

Thisstandardspecifiestherequirementsforall-aroundcoatingofpartswithinternalandexternal

threads,boltsmadeofsteel,andholes,whereinthiscoatingisappliedforthepurposeofprevent‐

ingfaultyinstallationonassemblylinesdueto

–Residueofprimercoatsappliedusingtheelectro-coatingmethod

–Weldspatterfromtheweldingofpartswithinternalorexternalthreads,bolts,andholes.

Itappliesonlytoalimitedextentforuseofthreadedpartswithspecialrequirements,suchas

–Ambienttemperatures90°C(duetoinfluenceonthecoefficientoffriction)

–Waxedcomponents

–Componentsmadeofmagnesium

–ThreaddimensionsM6andM8(duetocriticalpitchangle,seeVolkswagenstandard

VW01129)

Alwaysusethelatestversionofthisstandard.Page1of4

Thiselectronicallygeneratedstandardisauthenticandvalidwithoutsignature.

TheEnglishtranslationisbelievedtobe