Ncaj seam welded steel yeeb nkab, raws li txheej txheem vuam tuaj yeem muab faib ua qhov ua haujlwm siab ua haujlwm vuam thiab nqes dej vuam vuam, qhov ntev hauv qab vuam vuam vuam txuas yog luv rau SAWL, kev sib txuas ncaj ncaj txuas tsis kam yog luv rau ERW.
Kev ua haujlwm siab vuam hlau (ERW hlau) vim tias nws vuam thiab nqes hauv qab vuam hauv txheej txheem vuam, ERW txheej txheem tsis ntxiv cov khoom siv vuam, vuam yam tsis muaj cua sov melting lub xeev ntawm cov hlau, tom qab rov ua dua txheej txheem, tsim weld thiab cov khoom siv tshuaj lom neeg muaj pes tsawg leeg sib xws, hlau tom qab kho qhov txhab, tsim khoom txias txias kev nyuaj siab, vuam kev nyuaj siab tau txhim kho, yog li ntawd cov cuab yeej siv zog ntawm ERW cov yeeb nkab.
Longitudinal submerged arc vuam (SAWL steel) vim tias nws siv vuam txias nthuav cov txheej txheem cov yeeb nkab, yog li SAWL cov yeeb nkab qhov ntev qhov tseeb, siv SAWL steel yeeb nkab taub qab sib koom ua ke hauv qhov zoo kom thiaj li ua kom lub vuam zoo, los ntawm kev nthuav dav thev naus laus zis mus rau qee qhov los ntawm kev tshem tawm ib feem ntawm kev ntxhov siab sab hauv. Ntxiv rau SAWL steel yeeb nkab Welding ntau cov hlau vuam (peb xaim, plaub xaim), xws li cov txheej txheem vuam tsim thaum vuam kab zog me me, cov khoom siv niam txiv ntawm cov cua sov cuam tshuam thaj tsam ntawm qhov cuam tshuam me me.
Ntau txoj hlua hlau tom qab vuam ntawm cov hlau qub tuaj yeem nce kom tshem tawm cov kev cuam tshuam kev vuam siv, yog li cov khoom siv dag zog ntawm cov yeeb nkab hlau Leej niam tuaj yeem ua los ntawm kev ntsuas qhov tsis pom tseeb ntawm phaj 100%, ua tau raws li qhov siab ntawm cov kav dej ntawm niam txiv cov khoom xav tau. Txawm hais tias SAWL cov yeeb nkab ua tau zoo dua li lwm lub raj hlau, tab sis nws tus nqi siab, ua peev txheej rau tus neeg siv thiab nqis rov qab.
Ib, cov khoom siv raw thiab cov peev txheej tsim khoom sib txawv
ERW steel yog cov khoom siv raw ntawm cov hlau kub dov coils, SAWL cov khoom siv yeeb nkab yog cov kuav los tiag hlau phaj. Yog li ERW hlau tuaj yeem ua tiav kev sib dhos ua haujlwm tsis tu ncua, kev ua haujlwm siab ntau lawm, tus nqi tsim khoom qis; thiab SAWL steel yog cov hlau ua tiav, tuaj yeem paub ua haujlwm txuas ntxiv ua haujlwm, ua haujlwm qis dua, tsim khoom ntau.
