Dab tsi yog qhov sib txawv ntawm Cov Yeeb Nkab Hlau Thiab Cov Yeeb Nkab Hlau?

Taw qhia:

Hlau kav, tseem hu ua cam khwb cia hlau kav, yog dav siv nyob rau hauv cov dej thiab cov kav dej ntawm lub tsev thiab underground pipelines. Txawm li cas los xij, nyob rau xyoo tas los no, cov kav hlau kav hlau tau maj mam hloov cov kav hlau cam vim lawv qhov zoo ntawm lub zog, kav ntev, thiab corrosion kuj. Nyob rau hauv tsab xov xwm no, peb yuav tham txog qhov sib txawv ntawm cov kav hlau cam khwb cia thiab cov kav hlau ductile.

Khoom siv:

Cam khwb cia hlau kav yog ua los ntawm grey cam khwb cia hlau, uas yog ib tug composite khoom uas nws lub ntsiab Cheebtsam yog hlau, carbon, thiab silicon. Grey cam khwb cia hlau muaj lub zog siab thiab toughness, tab sis yog nkig thiab nquag tawg hauv qhov nro. Ntawm qhov tod tes, ductile hlau kav yog ua los ntawm cov hlau ductile (tseem hu ua nodular cam khwb cia hlau), uas muaj ntau yam tshuaj lom neeg muaj pes tsawg leeg. Cov hlau hlau muaj me me ntawm cov hlau alloying xws li carbon, silicon, thiab magnesium, uas muab cov hlau nws cov khoom tshwj xeeb. Ductile hlau muaj lub zog siab thiab tawv thiab tuaj yeem tiv taus siab tensile ntau dua li grey cam khwb cia hlau.

Kev tsim khoom:

Cov txheej txheem ntawm cov kav hlau cam khwb cia muaj cov hlau yaj, nchuav rau hauv pwm, thiab cia nws txias. Cov pwm yog tsim los muab cov yeeb nkab nws cov duab thiab qhov loj. Thaum cov hlau tau ruaj khov, cov yeeb nkab raug tshem tawm ntawm cov pwm thiab raug rau ntau yam txheej txheem tiav, xws li kev sib tsoo thiab polishing.

Cov txheej txheem tsim khoom ntawm cov kav hlau yeeb nkab zoo ib yam li cov kav hlau cam khwb cia, tab sis muaj qee qhov sib txawv tseem ceeb. Qhov sib txawv tseem ceeb yog qhov sib ntxiv ntawm magnesium rau cov hlau molten, uas hloov txoj kev hlau solidifies. Cov qauv tsim muaj ntau dua ductile thiab tsawg nkig, cia cov yeeb nkab tuaj yeem tiv taus kev ntxhov siab ntau dua.

Lub zog thiab Durability:

Cov kav hlau cam khwb cia muaj zog thiab ruaj khov, tab sis lawv kuj nkig thiab ua rau tawg hauv qhov nro. Cov kav hlau cam khwb cia muaj peev xwm tswj tau qhov siab, tab sis lawv tsis pom zoo rau cov ntawv thov uas xav kom cov kav dej yuav raug vibration lossis poob siab.

Cov kav hlau kav hlau, ntawm qhov tod tes, muaj lub zog siab thiab toughness. Lawv tsis tshua muaj kev tawg nyob rau hauv nro thiab tuaj yeem tiv taus kev vibration thiab poob siab. Cov kav hlau kav hlau kuj tseem tiv taus corrosion ntau dua li cov kav hlau cam.

Tus nqi:

Cov kav hlau cam khwb cia kuj pheej yig dua piv rau cov kav hlau kav hlau. Txawm li cas los xij, thaum xav txog tus nqi dhau lub neej ntawm cov kav dej, cov kav dej hlau txuas tuaj yeem ua rau tus nqi ntau dua. Cov kav hlau kav hlau yuav tsum tau saib xyuas tsawg dua thiab muaj lub neej ntev dua li cov kav hlau cam khwb cia. Qhov no txhais tau hais tias kev nqis peev thawj zaug hauv cov kav hlau hlau tuaj yeem them nyiaj rau lub sijhawm ntev.

Kev teeb tsa:

Cov kav hlau cam khwb cia thiab cov kav hlau kav hlau sib txawv hauv lawv txoj kev teeb tsa. Cov kav hlau cam khwb cia feem ntau yog ntsia rau hauv ntu thiab sib koom ua ke siv cov hmoov txhuas thiab oakum (ib hom fiber ntau siv los ua sealant). Cov kav hlau kav hlau, ntawm qhov tod tes, feem ntau yog ntsia tau siv cov pob qij txha lossis cov pob qij txha. Mechanical pob qij txha yog nruj-fitting connectors uas yuav tsum tau tsis muaj tshwj xeeb cov cuab yeej rau nruab, thaum thawb-on pob qij txha siv gaskets los tsim ib lub foob ntawm cov kav dej.

Kev siv:

Cov kav dej cam khwb cia hlau feem ntau yog siv hauv cov kav dej thiab cov kav dej. Lawv kuj tau siv rau hauv cov kav dej hauv av thiab cov ntawv thov kev lag luam uas yuav tsum muaj lub zog siab. Cov kav hlau cam khwb cia tsis pom zoo rau cov ntawv thov uas xav kom cov kav dej raug kev vibration lossis poob siab.

Cov kav dej ductile yog siv nyob rau hauv tib daim ntawv thov xws li cam khwb cia hlau kav, tab sis lawv tau nrov dua vim lawv lub zog ntau dua, durability, thiab corrosion kuj. Cov kav dej hlau tau pom zoo rau cov ntawv thov uas xav tau cov kav dej kom raug kev co los yog poob siab.

Xaus:

Hauv cov ntsiab lus, qhov sib txawv tseem ceeb ntawm cov kav hlau cam khwb cia hlau thiab cov kav hlau ductile yog cov khoom siv, kev tsim khoom, lub zog thiab kav ntev, tus nqi, kev teeb tsa, thiab kev siv. Cov kav hlau cam khwb cia yog pheej yig thiab muaj zog, tab sis lawv kuj nkig thiab ua rau tawg hauv qhov nro. Cov kav hlau kav yog kim dua tab sis muaj zog dua thiab tawv, tsis tshua muaj kev tawg, thiab muaj lub neej ntev dua. Cov kav dej hlau tau pom zoo rau cov ntawv thov uas xav tau cov kav dej kom raug kev co los yog poob siab.