Ua ntej, ductile hlau li qub siv ductile hlau ua cov khoom tseem ceeb, thaum cam khwb cia steel li qub siv cam khwb cia hlau. Cov hlau ductile yog tsim los ntawm uniformly faib spherical graphite hais nyob rau hauv lub cam khwb cia hlau matrix, thiab cov qauv no tshwj xeeb endows ductile hlau nrog zoo heev mechanical zog thiab corrosion kuj. Cam khwb cia hlau, ntawm qhov tod tes, muaj zog dua thiab muaj zog, ua rau nws haum rau kev ua haujlwm ntawm qhov kub thiab txias.
Qhov thib ob, kev tsim cov txheej txheem ntawm cov khoom siv hlau thiab cov cam khwb cia steel li qub kuj txawv. Cov khoom siv hlau nplaum yog tsim los ntawm cov txheej txheem hlau ductile, uas tuaj yeem txhim kho qhov toughness thiab cuam tshuam qhov hnyav ntawm cov casting, yog li txhim kho kev ntseeg tau thiab kev pabcuam lub neej ntawm lub valve. Cam khwb cia steel li qub, ntawm qhov tod tes, siv kev sib xyaw ua ke ntawm cov txheej txheem casting thiab forging los txhim kho lub zog thiab hardness ntawm lub valve los ntawm high-temperature forging.
Tsis tas li ntawd, muaj qhov sib txawv ntawm kev ua tau zoo ntawm cov khoom siv hlau thiab cov cam khwb cia steel li qub. Ductile hlau li qub muaj damping zoo heev thiab seismic kev ua tau zoo, ua rau lawv haum rau kev ua hauj lwm ib puag ncig nrog siab vibrations thiab cuam tshuam. Thiab cam khwb cia steel li qub muaj kev tiv thaiv corrosion zoo dua thiab kev ua haujlwm kub, haum rau qee qhov kev tshaj tawm corrosive thiab high-temperature thiab high-pressure ua haujlwm ib puag ncig.
Tsis tas li ntawd, kuj tseem muaj qee tus nqi sib txawv ntawm cov khoom siv hlau thiab cov cam khwb cia steel li qub. Vim yog cov txheej txheem tsim khoom yooj yim thiab tus nqi qis ntawm cov khoom siv hlau, tus nqi ntawm cov hlau nplaum feem ntau yog qis dua li ntawm cov hlau cam khwb cia.
Hauv cov ntsiab lus, muaj qee qhov sib txawv ntawm cov khoom siv, kev tsim khoom, thiab kev ua tau zoo ntawm cov khoom siv hlau thiab cov hlau cam khwb cia. Kev xaiv cov hom valve tsim nyog yuav tsum tau txiav txim siab zoo raws li kev ua haujlwm tshwj xeeb thiab cov kev xav tau.
