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1、机械设备维修）1.Theeranewheelgnawingrail:whenthecraneintheoperationofthewheelrimandproducesmutualextrusionfrictiononthesideofthetrack,andthewheelrimandsignificantwearandtearonthesideofthetrack,thisphenomenoniscalledwheelgnawingrai1.Whatisthesizeoftherepair?Whatshouldbenoticedwhena
2、pplyingthismethodtorepairbrokenparts?Answer:usemorecomplexpartsinapairofmatchingpartsmachiningmethodswillwearpartstheshape,positionprecisionandsurfaceroughness,repair,anduseanothersimplerpartswithnewpartstoreplace,repairsizecorrespondingtosupporttheworkofdeputyabilitytofull
3、yrecover,therepairmethodforrepairingmethodofsize・Shouldbepaidattentiontowhenapplyingthismethodtorepairthefailureparts:afterrepair,theoriginalhasgreaterweakenthestrengthofthepartsshallnot,whenitisnecessarytocheckthestrengthorstiffness,thesurfaceheattreatmentparts,stillkeepha
4、veacertaindepthoftheheattreatmentafterrepairlayer,toensurethepartsoftheoriginalperformance・Describetheprocessofrepairingmechanicalfailurepartsofhotsprayingtechnology.A:theprocessofhotsprayingisasfollows:Prepare:theprocessofcleaning,surfacepreprocessing,surfacerougheningandp
5、reheating・Spraybondinglayer:thecombinationlayeroftheworklayerandtheworkpiececanbeimprovedbysprayingthebondinglayer・Thethicknessofthecombinationlayeris0.10'0.15mm,andthespraydistanceis180、20Omni・Ifthethicknessistoothick,itwillreducethebondingstrengthoftheworkinglayerandcause
6、thethicknessofthespraylayertobereducedandtheeconomyisnotgood.Sprayworklayer:whencombined,theworkinglayershouldbesprayedimmediately.Thequalityofthecoatingisdeterminedbytheamountofpowderandthedistanceofthespray.Thespraydistanceissuitablefor150~200mm,andthesurfaceoftheworkpiec
7、eis20~30m/min・Thespraydirectionofpowdershouldbepaidattentiontobeperpendiculartothespraysurface・Treatmentafterspraying:itshouldbecoolafterspraying・Requireabrasionresistantcoatinglayer,shouldbeputin200°Cafterprocessingoilsoakedinhalfanhour・Ifnecessary,itcanbemachinedbymeansof
8、turningorgrinding・Howtochoosetheadhesive?Thispaperbrieflydescribestheprocessofrepa
