Q: Dab tsi yog qhov kev ua haujlwm tsis zoo rau A106 Gr. B cov kav dej hauv CO2- muaj ob theem ntws?
A:Kev sib koom ua ke ntawmcorrosion thiab yaig. Condensate nrog CO2 ua rau muaj kev xeb thiab pitting, thaum lub impingement ntawm ob -theem ntws nrawm nrawm cov khoom poob los ntawm kev tshem tawm cov nplais tiv thaiv -4.
Q: Dab tsi lwm cov khoom siv tau pom zoo rau A106 Gr. B raj tsis ua hauj lwm vim erosive hnav thiab nkag?
A:Hloov nrogquenched thiab tempered Cr-Mo steelsyog pom zoo rau kev tiv thaiv zoo rau creep, oxidation, thiab yaig. Txheej nrog Ni alloys zoo li Inconel 625 lossis 718 yog lwm txoj hauv kev -8.
Q: Puas yog post-weld kho cua sov yuav tsum tau rau txhua hom A53 Qib B yeeb nkab?
A:Nws yog qhov yuav tsum tau ua rau welded hom. Rau A53 Qib B,Hom E (ERW) thiab Hom F (Lub qhov cub-welded) cov kav dej yuav tsum tau txais kev tshaj tawm -weld heat treatmentntawm qhov tsawg kawg nkaus ntawm 540℃kom temper lub weld cheeb tsam. Qhov no tsis tas yuav tsum tau rau hom S (seamless) yeeb nkab -5.
Q: Qhov kev sib tw vuam dab tsi yog tshwj xeeb rau A106 Gr.B (SSC & HIC) yeeb nkab nyob rau hauv txoj hauj lwm overhead?
A:Lub pas dej weld muaj qhov dej tsis zoo. Yog tias qhov sib txawv hauv paus me dhau, cov hlau yuav lo rau thaj tsam weld; Yog tias loj heev, tsis muaj fusion lossis sab hauv concavity tuaj yeem tshwm sim. Kev sib tsoo ntau dhau ntawm cov hauv paus hla tuaj yeem ua rau hlawv - dhau ntawm lub sijhawm thib ob -2.
Q: Puas yog kev kho cua sov zoo li qub rau A53 yeeb nkab?
A:Tsis yog. Normalizing tsis yog qhov yuav tsum tau ua hauv ASTM A53 tus qauv. Txawm li cas los xij, cov tuam txhab lag luam tuaj yeem muab nws, thiab 2024 version qhia txog kev xaiv rau "tag nrho re- cua sov" ntawm cov kav dej welded, uas tuaj yeem muab cov txiaj ntsig zoo sib xws -5.
