Carbon Steel vs Mild Steel
Hlau yog ib qho hlau ua los ntawm hlau thiab carbon. Cov pa roj carbon feem pua tuaj yeem sib txawv nyob ntawm qib thiab feem ntau nws nyob nruab nrab ntawm 0.2% thiab 2.1% los ntawm qhov hnyav. Txawm hais tias cov pa roj carbon yog cov khoom tseem ceeb alloying rau hlau qee yam khoom xws li Tungsten, chromium, manganese kuj tuaj yeem siv rau lub hom phiaj. Ntau hom thiab ntau npaum li cas ntawm cov khoom siv alloying txiav txim siab hardness, ductility thiab tensile zog ntawm steel. Alloying lub luag haujlwm yog lub luag haujlwm tswj xyuas cov qauv siv lead ua lattice ntawm cov hlau los ntawm kev tiv thaiv kev tawg ntawm cov hlau atoms. Yog li, nws ua raws li tus neeg sawv cev hardening hauv steel. Qhov ceev ntawm cov hlau txawv ntawm 7, 750 thiab 8, 050 kg / m 3 thiab, qhov no cuam tshuam los ntawm cov khoom sib xyaw ua ke ib yam. Kev kho cua sov yog txheej txheem uas hloov cov khoom siv ntawm cov hlau. Qhov no yuav cuam tshuam rau ductility, hardness thiab hluav taws xob thiab thermal zog ntawm steel. Muaj ntau hom hlau xws li carbon steel, me me steel, stainless hlau, thiab lwm yam. Hlau yog tsuas yog siv rau kev tsim kho lub hom phiaj. Cov tsev, chaw ntau pob, railway lem, txuas hniav yog ob peb qhov chaw ntawm ntau qhov chaw uas siv hlau hnyav heev. Tsis tas li ntawd, lawv tau siv hauv tsheb, nkoj, dav hlau, tshuab, thiab lwm yam. Feem ntau ntawm cov khoom siv hauv tsev niaj hnub no kuj ua los ntawm cov hlau. Tam sim no feem ntau cov rooj tog kuj tau hloov los ntawm cov khoom steel.
Carbon steel
Carbon steel yog siv los qhia cov hlau nrog carbon ua lub ntsiab alloying. Hauv cov pa roj carbon steel, cov khoom tshwj xeeb yog txhais los ntawm cov pa roj carbon ntau nws muaj. Rau cov hlau no, cov nyiaj ntawm lwm cov hlau alloying xws li chromium, manganese, cob alt, tungsten tsis tau txhais. Muaj plaub hom carbon hlau. Qhov kev faib tawm no yog nyob ntawm cov ntsiab lus carbon. Cov pa roj carbon me me thiab cov hlau tsis tshua muaj cov pa roj carbon tsawg heev. Muaj peb hom carbon steel li nruab nrab carbon steel, siab carbon steel thiab ultra high carbon steel. Hauv cov pa roj carbon ntau dua, cov pa roj carbon ntau txawv ntawm 0.30-1.70% los ntawm qhov hnyav. Cov pa roj carbon nruab nrab muaj 0.30-0.59% carbon cov ntsiab lus thaum cov hlau siab muaj 0.6-0.99%. Ultra siab carbon steel muaj 1.0-2.0% ntawm cov ntsiab lus carbon. Lawv tuaj yeem raug kho cua sov kom tiav. Yog li ntawd, feem ntau cov no muaj zog heev thiab nyuaj, tab sis ductility yuav qis.
Mild Steel
Mild steel yog hom carbon steel uas nws muaj cov pa roj carbon tsawg heev. Kwv yees li, nws yog 0.16-0.29% los ntawm qhov hnyav. Cov hlau no yog pheej yig heev thiab feem ntau siv. Nws yog malleable thiab ductile tab sis muaj zog tensile tsawg. Cov pa roj carbon me me tsis tuaj yeem ua kom tawv los ntawm kev kho cua sov.
Qhov txawv ntawm Carbon Steel thiab Mild Steel yog dab tsi?
• Cov hlau me me yog hom carbon steel.
• Cov hlau me me muaj feem pua ntawm cov pa roj carbon tsawg heev piv rau lwm cov hlau (kwv yees li 0.16–0.29% los ntawm qhov hnyav).
• Cov hlau me me muaj cov ductility siab, thiab nws yog malleable, whereas lwm hom carbon steel muaj tsawg ductility.
• Cov pa roj carbon me me tsis tuaj yeem ua kom tawv los ntawm kev kho cua sov, tab sis lwm hom carbon hlau tuaj yeem ua kom tawv los ntawm kev kho cua sov.
• Cov hlau me me tsis muaj zog thiab nyuaj dua li lwm hom carbon steel.
