Spcc (Feem ntau txias - rolled carbon steel ntawv thiab sawb) yog ib tug neeg sawv cev ntawm tsawg- rolled steel. Nws txias {{4} de made cov khoom siv (xa cov khoom siv kub, yog qhov tseem ceeb rau nws cov qauv siv thoob plaws hauv stamped thiab cov txheej txheem. Hauv qab no muab cov lus qhia ntxaws ntxaws rau cov tub ntxhais txias txias {6} Txoj kev ua tau zoo, thiab cov txheej txheem kev hloov:
1. Cov kev ua tau zoo ntawm txias - ua cov khoom muaj zog
Spcc txias {{0} Txoj kev ua yeeb yam muaj peev xwm tshwj xeeb los ntawm muaj zog yas deformity, thiab kev ua tau zoo tshaj plaws tom qab kev sib sau. Cov no muaj nuj nqis los ntawm cov ntsuas hauv qab no:
High elongation (Gruple Yas Reserve)
Elongation (₅₀₅₀, ntsuas cua ntev 50 hli) ntau dua lossis muaj kev sib npaug nrog qhov nruab nrab (piv txwv li}, HSLA HSLA, kwv yees li 15% -25%). Qhov no txhais tau tias Spcc tuaj yeem tiv taus lub zog tensile nyob rau hauv kev ua haujlwm txias yam tsis muaj kev tawg, ncab thicking "(xws li sib sib zog nqus duab thiab flaring). Piv txwv li, thaum stamping ib lub tiaj tiaj tus rau hauv lub khob ua noj, cov npoo thiab hauv qab ntawm spccccing "(hauv zos ntau dhau los ua kom tawg) tsawg dua.
Tsawg tawm los zog thiab cov txiaj ntsig zoo - rau - muaj zog piv
Cov txiaj ntsig lub zog yog ntau dua lossis sib npaug ntawm 130 mpa ( Qhov tsawg tawm los zog tso cai rau cov khoom los pib yas deformation nrog tsawg kawg quab yuam, txo lub nra ntawm cov khoom siv ua. Qhov tsawg tshaj tawm piv qhia tias cov ntaub ntawv tseem muaj kev txhawb nqa tau tom qab kev tawm tsam (piv txwv li, "muaj zog ua kom muaj kev ntxhov siab hauv ib cheeb tsam. High uniform elongation thiab zoo-sib luag deformation.
Spcc's Metallographic qauv yog uniform ferrite (thawj qauv ntawm tsawg - carbon steel tom qab tov txias txias), nrog rau cov nplej zoo thiab dawb huv. Yog li ntawd, thaum lub sij hawm ua kom txias, deformation thoob plaws cov khoom siv yog ntau yam tsis zoo, txo qis hauv zos ntau (xws li wrinkling thiab tawg). Piv txwv li, thaum muaj kev khoov, SPCC tuaj yeem ua tiav qhov kev tshaj tawm me dua (tsawg kawg yog khoov vojvoog tuab) tsis muaj kev tawg lossis pom "cov txiv kab ntxwv tev" (saum npoo av "(saum npoo av).
Tsawg hardness thiab zoo heev anti -} txhuam cov khoom.
Nrog rau brinell hardness ntawm kwv yees li 60- kub (spcc ua haujlwm qis dua), tshwj xeeb yog tsim nyog rau kev sib tw txias (tshwj xeeb yog tsim nyog rau kev siv lubrication yooj yim nrog kev txwv tsis pub siv lubrication). Tsis tas li ntawd, nws cov tawv tawv qis txo cov khoom siv-stamping " Ii. Cov ntsiab lus tseem ceeb cuam tshuam rau kev ua kom txias
Kev ua kom txias ua tau zoo ntawm Spcc tsis tau kho thiab yog feem ntau cuam tshuam los ntawm cov kev hloov kho hauv qab no, xav tau kev kho ib yam nyob hauv cov ntawv thov tiag tiag:
Txias dov txo
Txias rolling siv dov lub zog kom txo cov tuab ntawm cov phaj steel (txo qis yog feem ntau 30% -60%). Qhov ntau dua qhov txo, cov ntau tshaj tawm cov haujlwm ua haujlwm hnyav ntawm cov khoom siv:
Kev txo me me (piv txwv li, tsawg dua lossis sib npaug rau 30%): Tawm los yog siab dua (≈35% MPA), thiab muaj kev haum xeeb rau kev sib sib zog nqus thiab muaj kev sib sib zog nqus.
Kev txo loj loj (piv txwv li, ntau dua lossis sib npaug ntawm 50%): Xaiv kom haum rau cov ntawv thov yooj yim (xws li cov nyiaj txiag tsis sib xws (xws li cov nyiaj txiag qis). Kev Kho Mob Anneal
Annealing (qis - qhov kub thiab txias {} {1} {1} {1} {1} {1} Kev ua haujlwm ua haujlwm hnyav thiab ntxiv cov plasterity ntxiv:
Unannealed: Vim ua haujlwm tawv tawv, Spcc ua kom muaj zog dua thiab kev sib zog loj dua, ua rau nws tsim nyog tsim cov ntawv thov uas muaj zog.
Annealed: tawm lub zog yog txo (tsawg dua los yog sib npaug ntawm 130 mpa), thaum muaj ntau dua 35%, ua rau muaj kev txhim kho kom zoo dua. Qhov no ua rau nws haum tshwj xeeb rau high- precision cov txheej txheem xws li sib sib zog nqus teeb meem thiab flaring. (Hauv qee cov ntawv thov, SPCC yuav hloov chaw. Spce yog anealed, tshwj xeeb sib sib zog nqus daim hlau nrog ib tug elongation ntawm ntau dua lossis sib npaug ntawm 34%).
Tshuaj Muaj Tshuaj
Spcc muaj cov ntsiab lus carbon muaj tsawg dua lossis sib npaug ntawm cov neeg tsis sib xws xws li 0.50%, thiab qis dua lossis sib npaug lossis sib npaug 0.035%).
Tsawg cov pa roj carbon ua kom cov qauv ferrite, tiv thaiv kom britleness tshwm sim los ntawm carbide nag lossis daus.
Tsawg sulfur txo "kub brittleness" (thaum mob phosphorus txias ", thaum ua kom cov khoom tsis tuaj yeem tawm tsam thaum deformation.