(Čelika) surfacetreatment-drawingofwire rod(mattresswiresavailablethismethod)
Patentedspringwires:inthemiddleofwiresizes, orcold-drawnspecleadhardeningandsurfacetreatmentanddrawing.
Galvanizedspringsteel žica: usuallyhot-umoиi galvanizingorplatingfinishedsize, alsousewirepicklinghot-hladno-drawnaftergalvanizingtotherequiredsize.
Oilhardenedspringsteel žica: čelik bemadeofcarbonsteeloralloy na demandcan, surfacetreatmentsandquenchedandtemperedaftercolddrawingtoafinishedsize, ova kindoftechnologyinautomotivesuspensioncoil springandvalvespringsteel wirewithmoreordinarySprings, naravno, canalsobeused.
Surfacetreatment:commonlyusedpicklingandphosphorization, removalofironoxidetoformphosphatecoating; ima afewmechanicalapproach. Aimwastomeettherequirementsofcold-drawnwire-drawingprocess, smoothsurfaceisobtained. Springsteel wireforhighfatiguelife, tako asvalvespringsteel žica, čelična žica rodherein, reducingsurfacedefectsonsteelbilletgrinding, alsohelpreducedefects.
Crtanje: finishedpullingthreaddrawingprocesshasagreatinfluenceontheproductproperties, generallyuselarger smanjenje ukupne površine od oko 90% (seeareareductionrate) andlowpassareareduction (10% - 20%), inordertoensurethetoughnessof theproduct. Forhigh strengthspringsteel žice, drawingforthecontrolofexportsofsteeltemperaturebelow150 ° c, preventingwirereverseduetostrainagingcrack, whichisamajorflawofsteelscrap. Zbog ovog razloga, drawingagoodlubricationisrequiredandsufficientcooling, smalllaneareareductionanddrawingspeedhelpsreducethewireand #39; stemperaturerise.
Toplotni tretman: carbonsteelSpringwireleadhardeningprocess, te fortheimprovementofdeepdrawingandspringpropertiesareuseful cangetveryfinePearlite (sorbite), patentingofthealternativeprocessoffluidized-bedis notextended, onlyinsmalldiameterapplication. Alloysteel wireannealingheat treatmentisgenerallyusedtomakedrawingdeformationmicrostructureadapted. INOX steelwireheat treatmentsolutiontreatment, thepurposeof whichistoimprovetheOrganizationtomeettheneedsofdrawing.Oilquenchingprocessusedonthewireusinginductionheatingorgas,fuel oilfurnace, heatingthewiretotheaustenitizingtemperatureinsulationfor, ponekad, anothermedium-temperaturetemperingafterhardening. Althoughnominallycalledoil, basicallybywaterquenchingoraddpolymerwaterquenching.
