Lub taub qab vuam flanges, kuj hu uacaj dab vuam flanges(WN), feem ntau yog siv cov yeeb nkab fittings uas muab kev ruaj ntseg ntawm cov kav dej. Lawv muaj cov kev cai tshwj xeeb los xyuas kom meej lawv cov kev ua tau zoo thiab kev ntseeg tau. Ntawm no yog cov kev xav tau rau pob tw vuam flanges:
1. Kev tsim khoom: Lub taub qab vuam flanges feem ntau yog forged los yog tsim los ntawm cov txheej txheem forging. Thaum siv steel phaj lossis seem steel, cov hauv qab no yuav tsum tau ua raws li:
a. Ultrasonic tshuaj xyuas yuav tsum tau ua kom paub tseeb tias tsis muaj delamination tsis xws luag.
b. Hlau daim hlau yuav tsum tau txiav mus rau hauv ib daim hlab raws li dov kev taw qhia, khoov, thiab pob tw welded los ua ib lub nplhaib, tsim ib tug cylindrical nto. Direct machining ntawm steel daim hlau rau hauv welded caj dab flanges yog tsis tso cai.
c. Lub pob tw weld ntawm lub nplhaib yuav tsum muaj kev nkag mus tag nrho, kom ntseeg tau tias muaj kev sib txuas ruaj khov thiab ruaj khov.
d. Kev kho cua sov tom qab vuam yog tsim nyog rau lub pob tw weld ntawm lub nplhaib ncig. Tsis tas li ntawd, 100% radiographic lossis ultrasonic flaw detection yuav tsum tau ua, ua tau raws li qhov yuav tsum tau ua.
2. Neck Slope: Txoj kab nqes sab nraud ntawm lub caj dab ntawm lub taub qab vuam flange yuav tsum tsis pub tshaj 7 degrees. Qhov no ua kom muaj kev sib raug zoo thiab kev sib khi thaum txuas lub flange rau cov yeeb nkab.
3. Cov Qauv Txuj Ci: Cov kev ntsuas tsis zoo thiab cov qauv zoo rau lub pob tw vuam flanges yuav tsum ua raws li cov qauv kev lag luam, xws li JB4726-4728.
Los ntawm kev ua raws li cov kev cai no, pob tw vuam flanges tuaj yeem ua tau zoo nyob rau hauv ntau daim ntawv thov thiab muab kev ruaj ntseg thiab tsis muaj kev sib txuas ntawm cov kav dej.
