(Ocel) surfacetreatment---drawingofwire rod(mattresswiresavailablethismethod)
Patentedspringwires:inthemiddleofwiresizes, orcold-drawnspecleadhardeningandsurfacetreatmentanddrawing.
Galvanizedspringsteel drát: usuallyhot-dip galvanizingorplatingfinishedsize, alsousewirepicklinghot studené drawnaftergalvanizingtotherequiredsize.
Oilhardenedspringsteel drát: ocel bemadeofcarbonsteeloralloy na demandcan, surfacetreatmentsandquenchedandtemperedaftercolddrawingtoafinishedsize, tento kindoftechnologyinautomotivesuspensioncoil springandvalvespringsteel wirewithmoreordinarySprings, samozřejmě, canalsobeused.
Surfacetreatment:commonlyusedpicklingandphosphorization, removalofironoxidetoformphosphatecoating, jsou afewmechanicalapproach. Aimwastomeettherequirementsofcold-drawnwire-výkresu proces, smoothsurfaceisobtained. Springsteel wireforhighfatiguelife, taková asvalvespringsteel drátu, ocelový drát rodherein, reducingsurfacedefectsonsteelbilletgrinding, alsohelpreducedefects.
Kreslení: finishedpullingthreaddrawingprocesshasagreatinfluenceontheproductproperties, generallyuselarger celková rozloha snížení přibližně o 90 % (seeareareductionrate) andlowpassareareduction (10-20 %), inordertoensurethetoughnessof produktem. Drát strengthspringsteel Forhigh, drawingforthecontrolofexportsofsteeltemperaturebelow150 ° c, preventingwirereverseduetostrainagingcrack, whichisamajorflawofsteelscrap. Pro tento důvod, drawingagoodlubricationisrequiredandsufficientcooling, smalllaneareareductionanddrawingspeedhelpsreducethewireand #39; stemperaturerise.
Tepelné ošetření: carbonsteelSpringwireleadhardeningprocess, cangetveryfinePearlite (sorbce) fortheimprovementofdeepdrawingandspringpropertiesareuseful, patentingofthealternativeprocessoffluidized-bedis notextended, onlyinsmalldiameterapplication. Alloysteel wireannealingheat treatmentisgenerallyusedtomakedrawingdeformationmicrostructureadapted. Nerez steelwireheat treatmentsolutiontreatment, thepurposeof whichistoimprovetheOrganizationtomeettheneedsofdrawing.Oilquenchingprocessusedonthewireusinginductionheatingorgas,fuel oilfurnace, heatingthewiretotheaustenitizingtemperatureinsulationfor, někdy, anothermedium-temperaturetemperingafterhardening. Althoughnominallycalledoil, basicallybywaterquenchingoraddpolymerwaterquenching.
