(Acer) surfacetreatment---drawingofwire rod(mattresswiresavailablethismethod)
Patentedspringwires:inthemiddleofwiresizes, orcold-drawnspecleadhardeningandsurfacetreatmentanddrawing.
Galvanizedspringsteel cable: usuallyhot-bany galvanizingorplatingfinishedsize, alsousewirepicklinghot-fred-drawnaftergalvanizingtotherequiredsize.
Oilhardenedspringsteel de filferro: en-demandcan bemadeofcarbonsteeloralloy d'acer, surfacetreatmentsandquenchedandtemperedaftercolddrawingtoafinishedsize, aquest kindoftechnologyinautomotivesuspensioncoil springandvalvespringsteel wirewithmoreordinarySprings, per descomptat, canalsobeused.
Surfacetreatment:commonlyusedpicklingandphosphorization, removalofironoxidetoformphosphatecoating; thereare afewmechanicalapproach. Aimwastomeettherequirementsofcold-drawnwire-drawingprocess, smoothsurfaceisobtained. Springsteel wireforhighfatiguelife, tan asvalvespringsteel cables, filferro d'acer rodherein, reducingsurfacedefectsonsteelbilletgrinding, alsohelpreducedefects.
Dibuix: finishedpullingthreaddrawingprocesshasagreatinfluenceontheproductproperties, generallyuselarger superfície total reducció del 90% (seeareareductionrate) andlowpassareareduction (10% - 20%), inordertoensurethetoughnessof theproduct. Filferro de strengthspringsteel Forhigh, drawingforthecontrolofexportsofsteeltemperaturebelow150 º c, preventingwirereverseduetostrainagingcrack, whichisamajorflawofsteelscrap. Per aquesta raó, drawingagoodlubricationisrequiredandsufficientcooling, smalllaneareareductionanddrawingspeedhelpsreducethewireand #39; stemperaturerise.
Tractament: carbonsteelSpringwireleadhardeningprocess, fortheimprovementofdeepdrawingandspringpropertiesareuseful cangetveryfinePearlite (sorbite), patentingofthealternativeprocessoffluidized-bedis notextended, onlyinsmalldiameterapplication de calor. Alloysteel wireannealingheat treatmentisgenerallyusedtomakedrawingdeformationmicrostructureadapted. Inoxidable steelwireheat treatmentsolutiontreatment, thepurposeof whichistoimprovetheOrganizationtomeettheneedsofdrawing.Oilquenchingprocessusedonthewireusinginductionheatingorgas,fuel oilfurnace, heatingthewiretotheaustenitizingtemperatureinsulationfor anothermedium-temperaturetemperingafterhardening, en algun moment. Althoughnominallycalledoil, basicallybywaterquenchingoraddpolymerwaterquenching.
