(yoDSutlIj naQ) surfacetreatment---drawingofwire rod(mattresswiresavailablethismethod)
patentedspringwires:inthemiddleofwiresizes, orcold-drawnspecleadhardeningandsurfacetreatmentanddrawing.
galvanizedspringsteel wire: usuallyhot-galvanizingorplatingfinishedsize, alsousewirepicklinghot-bIr-drawnaftergalvanizingtotherequiredsize ngoSmo'.
oilhardenedspringsteel wire:-demandcan bemadeofcarbonsteeloralloy yoDSutlIj naQ, surfacetreatmentsandquenchedandtemperedaftercolddrawingtoafinishedsize, kindoftechnologyinautomotivesuspensioncoil springandvalvespringsteel wirewithmoreordinarysprings, luq, canalsobeused.
surfacetreatment:commonlyusedpicklingandphosphorization, removalofironoxidetoformphosphatecoating; thereare afewmechanicalapproach. aimwastomeettherequirementsofcold-drawnwire-drawingprocess, smoothsurfaceisobtained. springsteel wireforhighfatiguelife, qabwIj asvalvespringsteel wire, yoDSutlIj naQ wire rodherein, reducingsurfacedefectsonsteelbilletgrinding, alsohelpreducedefects.
'etlhDaj lel chay': finishedpullingthreaddrawingprocesshasagreatinfluenceontheproductproperties generallyuselarger total yoS reduction ghot tu'lu'. mej 90 vatlhvI' (seeareareductionrate), andlowpassareareduction (10 vatlhvI'-20 vatlhvI'), inordertoensurethetoughnessof theproduct. forhigh strengthspringsteel wire, drawingforthecontrolofexportsofsteeltemperaturebelow150 ° [taH, preventingwirereverseduetostrainagingcrack, whichisamajorflawofsteelscrap. meq, drawingagoodlubricationisrequiredandsufficientcooling, smalllaneareareductionanddrawingspeedhelpsreducethewireand 39 vIlopQo' jay'; stemperaturerise.
tuj treatment: carbonsteelspringwireleadhardeningprocess, SoH cangetveryfinepearlite (sorbite) fortheimprovementofdeepdrawingandspringpropertiesareuseful, patentingofthealternativeprocessoffluidized-bedis notextended, onlyinsmalldiameterapplication. alloysteel wireannealingheat treatmentisgenerallyusedtomakedrawingdeformationmicrostructureadapted. stainless steelwireheat treatmentsolutiontreatment, thepurposeof whichistoimprovetheOrganizationtomeettheneedsofdrawing.Oilquenchingprocessusedonthewireusinginductionheatingorgas,fuel oilfurnace, heatingthewiretotheaustenitizingtemperatureinsulationfor sometime, anothermedium-temperaturetemperingafterhardening. althoughnominallycalledoil, basicallybywaterquenchingoraddpolymerwaterquenching.
