SAE 3145 carbon hlau

Hais txog cov tshuaj muaj pes tsawg leeg, SAE 3145 feem ntau muaj cov hlau thiab carbon, nrog rau cov ntsiab lus carbon ua lub luag haujlwm tseem ceeb hauv kev txiav txim siab nws cov khoom. Qhov tsim nyog ntawm carbon imparts lub zog thiab hardness rau cov hlau. Tsis tas li ntawd, nws yuav muaj me me ntawm lwm cov ntsiab lus xws li manganese, silicon, thiab sulfur nyob rau hauv kev tswj kom muaj nuj nqis. Manganese pab txhim kho cov hlau tawv thiab tawv tawv, thaum silicon ua raws li deoxidizer thiab tseem muaj kev cuam tshuam zoo rau lub zog. Sulfur, thaum tam sim no nyob rau hauv tsawg npaum li cas, tuaj yeem txhim kho machinability, tab sis cov sulfur ntau dhau tuaj yeem ua rau muaj kev cuam tshuam tsis zoo rau cov hlau cov khoom siv kho tshuab thiab weldability.

Hais txog nws cov khoom siv kho tshuab, SAE 3145 nthuav tawm lub zog tensile zoo, uas tso cai rau nws tawm tsam cov rog uas nyiam rub nws sib nrug. Nws kuj muaj qhov zoo ductility, ua rau nws tuaj yeem deformed rau qee yam yam tsis muaj kev tawg. Qhov kev sib xyaw ua ke ntawm lub zog thiab ductility ua rau nws haum rau ntau yam kev siv. Cov pa roj carbon steel muaj qhov tsim nyog ntawm hardness, muab kev hnav tsis kam thiab muaj peev xwm tiv taus abrasion hauv qee qhov kev siv. Nws lub zog qaug zog kuj yog ib qho tseem ceeb, tshwj xeeb tshaj yog nyob rau hauv cov ntawv thov uas cov khoom yuav raug rov qab thauj khoom thiab thauj mus los.
SAE 3145 feem ntau yog siv rau hauv kev tsim cov khoom siv, xws li lub zog, ncej, thiab bolts. Nws cov khoom siv kho tshuab ua rau nws tsim nyog rau cov ntawv thov no, vim tias nws tuaj yeem tiv taus cov kev ntxhov siab thiab kev thauj khoom koom nrog hauv kev ua haujlwm ntawm cov tshuab. Hauv kev tsim kho kev lag luam, nws tuaj yeem siv rau cov khoom siv uas muaj zog thiab kav ntev. Nws kuj yog siv rau hauv kev lag luam tsheb rau ntau qhov chaw, pab txhawb rau tag nrho cov kev ua tau zoo thiab kev nyab xeeb ntawm tsheb.
Kev kho cua sov ntawm SAE 3145 tuaj yeem hloov kho nws cov khoom ntxiv. Cov txheej txheem zoo li annealing, normalizing, thiab quenching tuaj yeem ua haujlwm los kho cov microstructure thiab txhim kho cov yam ntxwv xws li hardness, lub zog, thiab ductility. Piv txwv li, annealing tuaj yeem txo cov kev ntxhov siab sab hauv thiab txhim kho cov hlau machinability, thaum quenching tuaj yeem ua rau nws cov tawv tawv. Txawm li cas los xij, cov txheej txheem kho cua sov kom zoo yuav tsum tau ua raws li kom ntseeg tau tias cov txiaj ntsig xav tau ua tiav yam tsis muaj kev cuam tshuam rau kev ncaj ncees ntawm cov khoom. Zuag qhia tag nrho, SAE 3145 carbon steel, nrog nws cov cuab yeej txhais tau zoo thiab muaj ntau yam, tseem yog cov khoom tseem ceeb hauv ntau qhov kev lag luam, ua lub luag haujlwm tseem ceeb hauv kev tsim thiab tsim ntau yam ntawm cov khoom thiab cov qauv.

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