Lub neej ntev ntawm flange tsis yog lub sijhawm, tab sis yog phau ntawv qhia.
Ntau tus neeg xav tias cov flanges muaj hnub tas sij hawm zoo li cov zaub mov, tab sis lawv zoo li cov khaub ncaws zoo li - lawv lub neej nyob ntawm qhov lawv "hnav." Cam khwb cia hlau flanges tuaj yeem kav ntev txog 50 xyoo yam tsis muaj xeb hauv lub tsev khaws khoom qhuav, tab sis yuav ua tsis tiav tom qab 3 xyoos submerged hauv dej hiav txwv; stainless hlau flanges tuaj yeem tiv taus 20 xyoo hauv cov kav dej tshuaj, tab sis yuav perforate hauv 3 lub hlis thaum raug cov kua qaub muaj zog. Qhov tseem ceeb yog seb cov khoom puas haum rau kev ua haujlwm -ib yam li koj tsis tuaj yeem hnav khaub ncaws rau qhov chaw tsim kho.
Cov txheej txheem tsim khoom txiav txim siab lub flange lub cev muaj zog.
Cam khwb cia flanges zoo li tes-moulded pottery, muaj peev xwm muaj cov porosity sab hauv; forged flanges zoo li tshuab- nias pwm, ua rau cov qauv hlau denser. Ib yam li ob tus neeg ntawm qhov hnyav tib yam, ib tus uas muaj cov leeg nqaij ntau dua yog qhov ruaj khov. Precision- tshuab flanges tuaj yeem ua tiav qhov sib khi ntawm qhov roughness ntawm 0.8μm, sib npaug rau 1/80th thickness ntawm tib neeg cov plaub hau. Xws li flanges, ib zaug ntsia, tiv thaiv txawm tias helium to, ib txwm ncua lawv txoj sia.
Kev tu thiab tu yog qhov "preservation secrets" rau flanges. Kev kuaj xyuas lub bolt preload tsis tu ncua yog zoo li ua kom lub tsheb log tsheb - xoob dhau thiab nws yuav xau cua, nruj heev thiab nws yuav tawg. Hloov cov gaskets txhua 3 xyoos yog zoo li hloov lub roj teeb hauv xov tooj, muab cov khoom qub rau lub neej tshiab. Nyob rau hauv siab - qhov kub thiab txias, kuaj xyuas thermal expansion nyiaj txhua hli yog zoo li kho qhov ntev - tus neeg khiav dej num lub khau khiab, tiv thaiv hlau qaug zog thiab tawg. Cov kev saib xyuas no tuaj yeem txuas ntxiv lub flange lub neej los ntawm 3-5 zaug.