(Стомана) surfacetreatment---drawingofwire rod(mattresswiresavailablethismethod)
Patentedspringwires:inthemiddleofwiresizes orcold-drawnspecleadhardeningandsurfacetreatmentanddrawing.
Galvanizedspringsteel тел: usuallyhot-galvanizingorplatingfinishedsize alsousewirepicklinghot студено drawnaftergalvanizingtotherequiredsize се потапя.
Oilhardenedspringsteel тел: на demandcan bemadeofcarbonsteeloralloy стомана, surfacetreatmentsandquenchedandtemperedaftercolddrawingtoafinishedsize, този kindoftechnologyinautomotivesuspensioncoil springandvalvespringsteel wirewithmoreordinarySprings, разбира се, canalsobeused.
Surfacetreatment:commonlyusedpicklingandphosphorization, removalofironoxidetoformphosphatecoating; thereare afewmechanicalapproach. Aimwastomeettherequirementsofcold-drawnwire-drawingprocess smoothsurfaceisobtained. Springsteel wireforhighfatiguelife, такива asvalvespringsteel тел, стоманена тел rodherein, reducingsurfacedefectsonsteelbilletgrinding, alsohelpreducedefects.
Рисуване: finishedpullingthreaddrawingprocesshasagreatinfluenceontheproductproperties, generallyuselarger обща площ намаление от около 90 % (seeareareductionrate) andlowpassareareduction (10 % - 20 %), inordertoensurethetoughnessof theproduct. Forhigh strengthspringsteel тел, drawingforthecontrolofexportsofsteeltemperaturebelow150 ° c, preventingwirereverseduetostrainagingcrack, whichisamajorflawofsteelscrap. За този причина, drawingagoodlubricationisrequiredandsufficientcooling, smalllaneareareductionanddrawingspeedhelpsreducethewireand #39; stemperaturerise.
Топлина лечение: carbonsteelSpringwireleadhardeningprocess, cangetveryfinePearlite (sorbite) fortheimprovementofdeepdrawingandspringpropertiesareuseful, patentingofthealternativeprocessoffluidized-bedis notextended, onlyinsmalldiameterapplication. Alloysteel wireannealingheat treatmentisgenerallyusedtomakedrawingdeformationmicrostructureadapted. Неръждаема steelwireheat treatmentsolutiontreatment, thepurposeof whichistoimprovetheOrganizationtomeettheneedsofdrawing.Oilquenchingprocessusedonthewireusinginductionheatingorgas,fuel oilfurnace, heatingthewiretotheaustenitizingtemperatureinsulationfor, някога, anothermedium-temperaturetemperingafterhardening. Althoughnominallycalledoil basicallybywaterquenchingoraddpolymerwaterquenching.
