Hauv thaj tsam ntawm metallurgy, qhov zoo thiab kev ua haujlwm ntawm cov hlau phaj yog qhov tseem ceeb, tshwj xeeb tshaj yog nyob rau hauv kev lag luam xws li kev tsim kho, tsheb, thiab aerospace. Kev tshawb fawb tsis ntev los no tau tso lub teeb pom kev zoo ntawm cov khoom siv tshuaj thiab nag lossis daus tus cwj pwm ntawm kev suav nrog hauv cov hlau phaj, tshwj xeeb yog tsom rau lawv cov kev faib tawm ntawm qhov chaw thiab ntawm ib nrab ntawm cov khoom tuab. Txoj kev tshawb no tsis tsuas yog txhim kho peb txoj kev nkag siab ntawm microstructural yam ntxwv ntawm steel daim hlau tab sis kuj muaj qhov cuam tshuam loj rau lawv cov txheej txheem tsim khoom thiab kev siv kawg.
Kev suav nrog, uas yog cov khoom tsis yog xim hlau kos rau hauv cov hlau matrix, tuaj yeem cuam tshuam rau cov khoom siv ntawm cov hlau phaj. Lub xub ntiag ntawm cov kev suav nrog no tuaj yeem ua rau muaj kev hloov pauv hauv lub zog, ductility, thiab toughness, uas yog qhov tseem ceeb hauv kev txiav txim siab qhov tsim nyog ntawm cov hlau rau kev siv tshwj xeeb. Cov ntawv tsis ntev los no tshawb xyuas seb cov kev sib koom ua ke no coj li cas thaum lub sij hawm ua kom muaj zog thiab ua kom txias ntawm cov phaj steel, muab kev nkag siab rau lawv qhov tsim thiab kev faib tawm.
Cov kev tshawb fawb qhia tau hais tias cov kev sib koom ua ke yuav tsom rau ntawm qhov chaw thiab nyob rau hauv nruab nrab-thickness ntawm steel phaj. Qhov tshwm sim no tuaj yeem raug ntaus nqi rau cov thermal gradients thiab solidification tus nqi tau ntsib thaum lub sij hawm casting txheej txheem. Raws li cov hlau molten txias, qee cov ntsiab lus tuaj yeem tawm ntawm qhov kev daws teeb meem, tsim cov kev suav nrog uas tuaj yeem cuam tshuam rau tag nrho kev ncaj ncees ntawm cov hlau. Kev nkag siab txog tus cwj pwm no yog qhov tseem ceeb rau cov tuam txhab lag luam uas xav tsim cov hlau hlau zoo nrog qhov tsis xws luag.
Tsis tas li ntawd, txoj kev tshawb fawb qhia txog qhov tseem ceeb ntawm kev tswj cov khoom sib xyaw ntawm cov hlau thiab cov xwm txheej hauv qab uas nws tau ua tiav. Los ntawm kev ua kom zoo dua cov kev txwv no, cov tuam txhab lag luam tuaj yeem txo qhov tsim ntawm kev cuam tshuam kev cuam tshuam, yog li txhim kho cov khoom siv ntawm cov khoom kawg. Qhov no yog qhov tshwj xeeb tshaj yog rau cov ntawv thov uas xav tau cov ntaub ntawv muaj txiaj ntsig zoo, xws li hauv kev tsim cov choj, cov tsev, thiab tsheb, qhov twg kev ntseeg siab thiab kev nyab xeeb ntawm cov hlau phaj yog qhov tseem ceeb tshaj plaws.
Ntxiv nrog rau qhov kev tshawb pom txuj ci, qhov cuam tshuam rau kev tsim khoom yog qhov tseem ceeb. Cov phaj hlau uas nthuav qhia kev coj tus cwj pwm zoo tuaj yeem ua rau muaj kev nce qib hauv cov khoom muag. Piv txwv li, cov tuam txhab tsim khoom tuaj yeem tsim cov hlau phaj nrog cov khoom tsim tshwj xeeb rau cov ntawv thov tshwj xeeb, xws li cov phaj siab zog rau cov qauv siv los yog cov phaj corrosion-resistant rau marine ib puag ncig. Qhov kev hloov kho no tuaj yeem muab kev sib tw hauv kev ua lag luam, catering rau ntau yam kev xav tau ntawm ntau yam kev lag luam.
Tsis tas li ntawd, qhov kev tshawb pom ntawm qhov kev tshawb fawb no tuaj yeem qhia txog kev tswj xyuas cov txheej txheem hauv steel phaj tsim. Los ntawm kev ua raws li kev soj ntsuam nruj thiab kev saib xyuas ntawm kev coj tus cwj pwm, cov neeg tsim khoom tuaj yeem xyuas kom meej tias lawv cov khoom ua tau raws li cov qauv thiab cov kev qhia tshwj xeeb. Txoj hauv kev zoo no tsis yog tsuas yog txhim kho cov khoom lag luam zoo xwb tab sis kuj txo qis qhov ua tsis tiav hauv kev ua haujlwm, thaum kawg ua rau cov neeg siv khoom txaus siab thiab kev ntseeg siab.
Hauv kev xaus, kev kawm txog kev daws teeb meem thiab nag lossis daus tus cwj pwm ntawm kev suav nrog hauv cov phiaj hlau muaj txiaj ntsig zoo uas tuaj yeem tsav kev tsim kho tshiab hauv kev tsim steel. Los ntawm kev nkag siab txog yam uas cuam tshuam rau kev tsim thiab kev faib tawm, cov tuam txhab tsim khoom tuaj yeem tsim cov hlau zoo dua uas ua tau raws li qhov xav tau ntawm cov ntawv thov niaj hnub no. Raws li kev lag luam txuas ntxiv mus, kev muaj peev xwm hloov kho thiab txhim kho cov khoom siv yuav yog qhov tseem ceeb rau kev tswj hwm kev sib tw thiab ua kom muaj kev nyab xeeb thiab kev ntseeg siab ntawm cov khoom steel.
Post lub sij hawm: Nov-06-2024
