nws ERW yeeb nkab tsim txheej txheem yog txheej txheem nyuaj, uas feem ntau suav nrog ob theem tseem ceeb. Thawj theem yog deformation; theem thib ob yog siv los txo cov distortion.
Nyob rau hauv ob theem no, lub puab txheej ntawm cov yeeb nkab steel yog ib txwm nyob rau hauv qhov kev txiav txim ntawm circumferential compressive kev nyuaj siab, nrog rau compression deformation. Lub txheej txheej ntawm cov yeeb nkab steel yuav muaj ntau lub lis piam ntawm tensile kev nyuaj siab thiab tensile deformation thaum lub sij hawm khoov txheej txheem ntawm kev nplua zoo. Thaum nkag mus rau theem zoo thiab ua tiav, txheej txheej sab nrauv yuav raug kev nyuaj siab thiab compression deformation. Nws yog ib qho tsim nyog sau cia tias qhov kawg ntawm txheej txheej ntawm ERW cov kav dej ntawm cov khoom sib txawv yog qhov sib txawv, uas qhia meej tias cov txheej txheem sab hauv thiab sab nrauv ntawm ERW yeeb nkab tsis zoo ib yam ntawm cov yeeb nkab ncig.
Cov teeb meem tshwm sim hauv kev tsim khoom ntawm ERW pipelines:
Tsis sib npaug dabtsi yog khoov deformation yog ib qho teeb meem tshwm sim hauv cov txheej txheem ntawm ERW cov kav dej, uas yuav ua rau muaj kev ntxhov siab loj nyob ib ncig ntawm cov yeeb nkab. Txhawm rau kom ntseeg tau tias qhov kev vam meej ntawm cov txheej txheem tsim khoom thiab cov khoom lag luam zoo, cov kev ntsuas zoo yuav tsum tau ua los daws nws thiab txo qhov tsis zoo ntawm cov kev ntxhov siab nyob rau hauv cov txheej txheem tsim khoom.
Rau qhov kev ntxhov siab seem ntawm ERW cov kav dej, nws tsis txaus los tsuas yog tshawb xyuas thiab txheeb xyuas qhov kev ntxhov siab nyob hauv cov khoom kawg. Peb yuav tsum tau nkag mus tob rau hauv cov txheej txheem tsim cov yeeb nkab ntawm ERW cov kav dej, pib los ntawm qhov kev xav ntawm kev tswj cov txheej txheem, thiab siv cov kev ntsuas los txo cov kev ntxhov siab uas seem, kom tsis txhob muaj kev cuam tshuam tsis zoo ntawm cov kev ntxhov siab nyob hauv qhov zoo ntawm ERW cov kav dej. .
Sizing yog tsuas yog los xyuas kom meej tias cov yeeb nkab txoj kab uas hla raws li qhov yuav tsum tau, thiab kev ntsuam xyuas dej siab yog los xyuas kom meej qhov ntom ntawm cov yeeb nkab steel, tab sis rau ERW kav, nws kuj yog ib qho tseem ceeb cov txheej txheem los txo cov circumferential residual kev nyuaj siab nyob rau hauv cov nqe lus ntawm cov kav dej.
hluav taws xob fusion vuam yeeb nkab
