Nrog rau txoj kev loj hlob ntawm kev tshawb fawb, thev naus laus zis thiab kev lag luam, cov kev xav tau siab dua tau muab tso rau hauv cov khoom siv, xws li lub zog siab dua, kev tiv thaiv rau qhov kub thiab txias, kev kub siab, tsis tshua muaj kub, tsis kam tiv thaiv corrosion, hnav thiab lwm yam tshwj xeeb ntawm lub cev thiab tshuaj lom neeg. Cov pa roj carbon steel tsis tuaj yeem ua tiav cov kev xav tau.
Disadvantages ntawm carbon steel:
(1) Tsawg hardenability. Raws li ib txwm muaj, qhov siab tshaj plaws hardenable txoj kab uas hla ntawm carbon steel kua quenching tsuas yog 10 hli -20 hli.
(2) Lub zog thiab tawm los piv yog tsawg. Piv txwv li, σs ntawm cov pa roj carbon zoo tib yam Q235 steel yog 235MPa, thaum lub σs ntawm cov hlau tsis tshua muaj hlau 16Mn yog ntau tshaj 360MPa. Lub σs / σb ntawm 40 steel tsuas yog 0.43, uas yog qis dua cov hlau alloy.
(3) Tsis zoo tempering stability. Vim qhov tsis zoo tempering stability, thaum carbon steel yog quenched thiab tempered, nyob rau hauv thiaj li yuav xyuas kom meej muaj zog dua, yuav tsum tau siv ib tug tsawg tempering kub, thiaj li hais tias lub toughness ntawm cov hlau yog tsawg; Txhawm rau kom ntseeg tau tias muaj zog zoo dua, qhov kub thiab txias yog siv Lub zog qis ntawm qhov kub thiab txias, yog li cov khoom siv dav dav ntawm cov pa roj carbon steel tsis siab.
(4) Tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua haujlwm tshwj xeeb. Cov pa roj carbon steel feem ntau tsis zoo hauv oxidation tsis kam, corrosion kuj, kub tsis kam, tsis kub tsis kam, hnav tsis kam thiab tshwj xeeb electromagnetic zog, thiab tsis tuaj yeem ua tau raws li qhov xav tau ntawm kev ua haujlwm tshwj xeeb.
(3) Tsis zoo tempering stability. Vim qhov tsis zoo tempering stability, thaum carbon steel yog quenched thiab tempered, nyob rau hauv thiaj li yuav xyuas kom meej muaj zog dua, yuav tsum tau siv ib tug tsawg tempering kub, thiaj li hais tias lub toughness ntawm cov hlau yog tsawg; Txhawm rau kom ntseeg tau tias muaj zog zoo dua, qhov kub thiab txias yog siv Lub zog qis ntawm qhov kub thiab txias, yog li cov khoom siv dav dav ntawm cov pa roj carbon steel tsis siab.
(4) Tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua haujlwm tshwj xeeb. Cov pa roj carbon steel feem ntau tsis zoo hauv oxidation tsis kam, corrosion kuj, kub tsis kam, tsis kub tsis kam, hnav tsis kam thiab tshwj xeeb electromagnetic zog, thiab tsis tuaj yeem ua tau raws li qhov xav tau ntawm kev ua haujlwm tshwj xeeb.
