(Acier) surfacetreatment---drawingofwire rod(mattresswiresavailablethismethod)
Patentedspringwires:inthemiddleofwiresizes, orcold-drawnspecleadhardeningandsurfacetreatmentanddrawing.
Galvanizedspringsteel fil : usuallyhot-tremper galvanizingorplatingfinishedsize, alsousewirepicklinghot-froid-drawnaftergalvanizingtotherequiredsize.
Fil Oilhardenedspringsteel : acier bemadeofcarbonsteeloralloy sur-demandcan, surfacetreatmentsandquenchedandtemperedaftercolddrawingtoafinishedsize, ce kindoftechnologyinautomotivesuspensioncoil springandvalvespringsteel wirewithmoreordinarySprings, bien sûr, canalsobeused.
SurfaceTreatment:commonlyusedpicklingandphosphorization, removalofironoxidetoformphosphatecoating ; réduireles afewmechanicalapproach. Aimwastomeettherequirementsofcold-drawnwire-drawingprocess, smoothsurfaceisobtained. Acier wireforhighfatiguelife, tels asvalvespringsteel fil, fil d’acier rodherein, reducingsurfacedefectsonsteelbilletgrinding, alsohelpreducedefects.
Dessin : finishedpullingthreaddrawingprocesshasagreatinfluenceontheproductproperties, generallyuselarger réduction de superficie totale d’environ 90 % (seeareareductionrate) andlowpassareareduction (10-20 %), inordertoensurethetoughnessof theproduct. Forhigh strengthspringsteel fil, drawingforthecontrolofexportsofsteeltemperaturebelow150 ° c, preventingwirereverseduetostrainagingcrack, whichisamajorflawofsteelscrap. Pour cette raison, les drawingagoodlubricationisrequiredandsufficientcooling, les smalllaneareareductionanddrawingspeedhelpsreducethewireand #39 ; stemperaturerise.
Traitement : carbonsteelSpringwireleadhardeningprocess, vous cangetveryfinePearlite (sorbite) fortheimprovementofdeepdrawingandspringpropertiesareuseful, onlyinsmalldiameterapplication, patentingofthealternativeprocessoffluidized-bedis notextended de chaleur. Alloysteel wireannealingheat treatmentisgenerallyusedtomakedrawingdeformationmicrostructureadapted. Acier inoxydable steelwireheat treatmentsolutiontreatment, thepurposeof whichistoimprovetheOrganizationtomeettheneedsofdrawing.Oilquenchingprocessusedonthewireusinginductionheatingorgas,fuel oilfurnace, heatingthewiretotheaustenitizingtemperatureinsulationfor parfois, anothermedium-temperaturetemperingafterhardening. Althoughnominallycalledoil, basicallybywaterquenchingoraddpolymerwaterquenching.
