I-flange enkulu ye-diameter njenge-flange eqhelekileyo, ngenxa yokuba ingasetyenziswa kwiintlobo ngeentlobo zezihlandlo ezahlukeneyo kunye neenzuzo zesiphumo esihle ngushishino oluthandwayo, imveliso isetyenziswa ngokubanzi koomatshini kunye neshishini lemichiza kunye namanye amashishini, vumela abavelisi be-DHDZ flange ukuba bazise iimfuno zomgaqo-nkqubo kunye nolwakhiwo oluchasayo.

I. Umgaqo-siseko weNdibano kunye neemfuno zeeflange ezinkulu zedayamitha
1. Xa udibanisa i-pair of flanges, imingxuma ye-bolt ye-flanges yokunyuka kufuneka ihambelane nemingxuma ye-bolt ehambelana ne-fixed flanges kunye neyodwa kunye ne-fixed flanges. Ukuphambuka akufanele kube ngaphezu kwe-1.5 kunye ne-2mm yobubanzi obungaphandle beeflange.
2. Jonga kwaye ulungise indawo yeflange ukusuka kwicala lasekhohlo nasekunene kunye neenyawo ezingama-90 zesikwere, kwaye ugqibezele ukuwelda kunye nokulungisa i-flange enkulu yedayamitha ngenqaku lesithathu kunye nelesine emva kokuwelda indawo.
3. Xa ukhetha iiflange ezihambelanayo zesixhobo okanye i-valve assembly, kufuneka kuthathelwe ingqalelo ukujonga ukuba iiflange zesixhobo sokuqala okanye i-valve assembly iyafana naleyo isetyenziswe kumbhobho.
4. Xa udibanisa iiflange ezine-flange-welded, ukuphela kombhobho kufuneka kufakwe i-2/3 yobukhulu bobubanzi obungaphakathi be-flange, kwaye emva koko udibanise i-flange kumbhobho. Kumbhobho othe tyaba, jonga i-weld ukusuka phezulu, emva koko ujonge ukuma kweflange ukusuka kumacala ahlukeneyo ngeenyawo ezingama-90 zesikweri ukuze umphezulu wokutywina ube ngokuthe tye kumgca osembindini wombhobho, emva koko beka i-weld ezantsi kwebala.
5. Ngaphambi kokudibanisa i-flange, hlambulula i-flange surface, ngakumbi indawo yokutywina.

Eyesibini, inkqubo yokusebenza kunye neempawu zolwakhiwo lwe-anti-corrosion ububanzi
Ukutywinwa kwe-corrosion inhibitor yokuzaliswa kwe-flange yokucoca ubukhulu obukhulu. Iphepha lokunamathisela (elicacileyo) kwi-tape kwi-flange edge ukukhusela i-flange ekubeni ingcolile xa i-injecting inhibitor corrosion; Vala kwaye ugcwalise i-flange clearance nge-corrosion inhibitor ukuqinisekisa ukuba i-flange clearance izaliswe ngokutywinwa kwe-corrosion inhibitor.
Emva kokuzalisa i-gap ye-flange nge-corrosion inhibitor, sebenzisa i-putty scraper ukugulisa ubuso obugudileyo kunye nolwalathiso olujikelezayo, ukwenzela ukuba i-gap kunye ne-flange edge kwindiza enye. krazula macala omabini eteyiphu.
Ukuba usebenzisa i-flange anticorrosion cream, kufuneka usebenzise imela ukusika i-flange anticorrosion cream ibe yimicu emxinwa, kwaye ngokobubanzi be-gap ye-flange, gcwalisa ngqo i-gap ye-flange ngesandla. Cinezela phantsi xa ugcwalisa.
Ukucocwa kunye nokuphathwa kwendawo ye-flange enkulu yobubanzi. Susa umhlwa kwi-flange clearance kunye nezikrufu ngebrashi; Coca i-flange clearance ngomoya ocinezelweyo; Ukuba i-remover yeekhemikhali isetyenzisiweyo, vavanya ukuba isisusi sekhemikhali siya kuchaphazela isitywina se-flange.
Ukuba uyathandabuza, kucetyiswa ukuba ungasebenzisi iindlela zekhemikhali; Sula umphezulu weflange ngesanti okanye umsonto womqhaphu ukuhlangabezana nemigangatho ye-ST2.