Hauv kev tsim khoom lag luam, cov kav dej zoo li "cov hlab ntsha" uas thauj cov khoom siv xws li cov hlau ore slurry, thee hmoov, thiab cov khib nyiab pov tseg. Txawm li cas los xij, feem ntau ntawm cov ntaub ntawv no muaj cov yam ntxwv ntawm qhov nyuaj siab thiab qhov nrawm nrawm. Cov kav dej ib txwm yuav sai sai no hnav tawm nrog cov xau, uas tsis yog tsuas yog xav tau kev kaw thiab hloov pauv ntau zaus, tab sis kuj tseem yuav ua rau muaj kev phom sij rau kev nyab xeeb vim yog cov khoom xau. Kev tshwm sim ntawm silicon carbide hnav-resistant pipelines yog qhov tseeb los daws qhov "hloov pauv teeb meem".
Tej zaum ib txhia neeg yuav nug tias, "silicon carbide" yog hom khoom siv dab tsi? Qhov tseeb, nws tsis yog ib yam tshiab. Yeej, nws yog ib yam khoom siv inorganic uas tsis yog hlau uas muaj silicon thiab carbon, nrog rau qhov nyuaj thib ob tsuas yog pob zeb diamond thiab corundum. Ntau daim ntawv xuab zeb zoo thiab cov cuab yeej sib tsoo uas feem ntau siv hauv lub neej txhua hnub siv silicon carbide. Thaum cov khoom siv hardness siab no ua rau hauv phab ntsa sab hauv ntawm cov kav dej, nws zoo li muab ib txheej ntawm "pob zeb diamond armor" rau ntawm cov kav dej. Thaum ntsib cov khoom siv hnav siab, nws tuaj yeem tiv taus qhov cuam tshuam thiab kev sib txhuam ntawm cov khoom siv, ua rau lub neej ua haujlwm ntawm cov kav dej ntev dua.
Piv nrog cov kav dej ib txwm muaj, qhov zoo ntawm cov kav dej silicon carbide hnav-resistant dhau ntawm "kev tiv thaiv hnav". Cov kav hlau ib txwm muaj yooj yim corroded los ntawm cov khoom corrosive thaum lub sijhawm thauj mus los, thiab cov kav yas nyuaj rau tiv taus qhov kub thiab txias siab thiab siab. Txawm li cas los xij, cov ntaub ntawv silicon carbide lawv tus kheej muaj cov yam ntxwv ntawm acid thiab alkali tsis kam thiab kub siab. Txawm hais tias thauj cov kua qaub lossis cov hmoov thee kub siab, lawv tuaj yeem ua haujlwm ruaj khov yam tsis muaj kev txhawj xeeb ntau zaus txog "corrosion perforation" lossis "high-temperature deformation". Qhov tseem ceeb tshaj, nws phab ntsa sab hauv yog du, ua rau nws tsis tshua muaj kev sib sau ua ke thiab thaiv thaum lub sijhawm thauj khoom, txo qhov teeb meem ntawm kev ntxuav cov kav dej thiab xyuas kom meej tias kev tsim khoom txuas ntxiv mus.
Niaj hnub no, hauv kev lag luam xws li kev khawb av, hluav taws xob, thiab kev tsim kho tshuaj lom neeg uas xav tau kev tiv thaiv kev hnav khaub ncaws siab heev rau cov kav dej, cov kav dej silicon carbide hnav khaub ncaws tau hloov cov kav dej ib txwm muaj. Nws tsis tas yuav hloov txhua rau lub hlis zoo li cov kav dej ib txwm muaj, thiab nws tsis tas yuav tsum tau them nqi kho dua. Txawm hais tias qhov kev nqis peev thawj zaug yuav zoo li siab dua me ntsis, nws yeej pab lub tuam txhab txuag tau ntau cov nuj nqis hauv lub sijhawm ntev. Rau cov tuam txhab uas nrhiav kev tsim khoom zoo thiab ruaj khov, kev xaiv cov kav dej silicon carbide hnav khaub ncaws yog qhov tseeb xaiv qhov kev daws teeb meem kev thauj mus los "tsis txhob txhawj, kav ntev".
Nrog rau qhov kev thov kom muaj zog thiab kev nyab xeeb ntawm cov khoom siv hauv kev tsim khoom lag luam, cov xwm txheej ntawm cov kav dej silicon carbide hnav-resistant yeej nthuav dav tas li. Nws daws qhov teeb meem "laus thiab nyuaj" hauv kev thauj mus los hauv kev lag luam nrog kev ua tau zoo ntawm cov khoom siv nws tus kheej, thiab tseem muab ntau lub tuam txhab nrog kev xaiv txhim khu kev qha ntawm txoj kev mus rau kev txo nqi thiab kev txhim kho kev ua haujlwm.
Lub sijhawm tshaj tawm: Lub Kaum Hli-28-2025