API 5L Qib B yeeb nkab yog cov kav dej uas siv cov roj thiab cov roj nkev. Kev sib raug zoo ntawm nws phab ntsa thickness thiab ntsuas siab tuaj yeem xam los ntawm cov qauv hauv qab no:
[ d \geq P \times 1.4 \times r / [ \sigma ]]
hauv:
(d) yog phab ntsa thickness ntawm cov yeeb nkab;
(P) yog lub siab sab hauv ntawm cov kav dej;
(r) yog lub vojvoog sab hauv ntawm cov yeeb nkab;
( [\sigma] ) yog qhov tso cai rau kev ntxhov siab ntawm cov khoom. Rau Q235 steel, nws tus nqi yog 215 N / mm².
Cov qauv no qhia tau hais tias cov phab ntsa tuab ntawm cov yeeb nkab yog proportional rau lub siab nws tuaj yeem tiv taus, thiab ua kom cov phab ntsa tuab tuaj yeem txhim kho lub siab-kev muaj peev xwm ntawm cov yeeb nkab. Tsis tas li ntawd, qee qhov kev nyab xeeb (xws li 1.4) feem ntau yog txiav txim siab thaum lub sijhawm tsim los xyuas kom meej tias cov kav dej tseem tuaj yeem ua haujlwm zoo nyob rau hauv cov xwm txheej hnyav.
Cov kev xav txog kev siv tswv yim
Kev tsim cov txheej txheem txwv: Thaum nce phab ntsa tuab tuaj yeem txhim kho kev ntsuas siab, cov phab ntsa tuab tuab tuaj yeem tsim cov txheej txheem tsim khoom. Piv txwv li, thaum lub sij hawm welding txheej txheem, lub thickness ntawm phab ntsa yuav tsum tau ntau dua welding tshav kub input, uas tej zaum yuav ua rau ib tug txo nyob rau hauv qhov zoo ntawm welded ob leeg, xws li vuam tawg, tsis tiav vuam thiab lwm yam tsis xws luag.
Tus nqi Factor: Raws li phab ntsa thickness nce, cov khoom siv ntawm cov yeeb nkab nqi nce ntau. Nyob rau tib lub sijhawm, kev thauj mus los thiab kev teeb tsa tus nqi kuj tseem yuav nce ntxiv vim qhov hnyav ntawm cov yeeb nkab ntau ntxiv vim muaj cov phab ntsa tuab ntxiv. Yog li ntawd, cov nqi yuav tsum tau muab coj los txiav txim siab thaum txiav txim siab phab ntsa thickness kom tau raws li qhov yuav tsum tau muaj kev ntsuas siab.
Kev sib npaug ntawm lwm yam khoom: Kev nce phab ntsa tuab tuaj yeem cuam tshuam rau lwm yam khoom ntawm cov yeeb nkab. Piv txwv li, qhov yooj yim ntawm cov kav dej txo qis thaum phab ntsa thickness nce, uas yog qhov tsis zoo rau cov kav dej uas yuav tsum tau khoov rau kev teeb tsa. Tsis tas li ntawd, cov phab ntsa tuab ntau dhau tuaj yeem ua rau txo cov hluav taws xob hloov hluav taws xob, uas yuav tsum tau saib xyuas tshwj xeeb hauv qee qhov kev siv kub-rhiab heev.
API 5l B teem sijhawm 40 Seamless Pipes
