ERW steel yeeb nkab yog dab tsi? Qhov loj tshaj qhov sib txawv ntawm ERW steel yeeb nkab (Electric Resistance Vuam, abbreviated li ERW) thiab seamless steel yeeb nkab yog ERW muaj ib tug weld seam, uas kuj yog tus yuam sij rau qhov zoo ntawm ERW steel yeeb nkab. Niaj hnub nimno ERW steel yeeb nkab ntau lawm tshuab thiab khoom siv, vim lub thoob ntiaj teb Tshwj xeeb tshaj yog nrog rau unremitting kev rau siab nyob rau hauv lub tebchaws United States thiab lwm lub teb chaws nyob rau hauv lub xyoo, lub seamlessness ntawm ERW steel kav tau raug daws txaus siab. Qee cov neeg faib cov seamlessness ntawm ERW steel kav rau hauv geometric seamlessness thiab lub cev seamlessness. Geometric seamlessness txhais tau tias tshem ERW steel kav. Sab hauv thiab sab nraud burrs. Vim muaj kev txhim kho tas mus li thiab txhim kho cov qauv ntawm kev tshem tawm sab hauv burr thiab cov cuab yeej txiav, cov burrs sab hauv ntawm cov kav hlau loj thiab nruab nrab txoj kab uas hla tau ua tiav zoo dua. Cov burrs sab hauv tuaj yeem tswj tau ntawm -0.2mm ~ + O.5mm thiab tsis muaj lub cev. Seamization yog hais txog qhov sib txawv ntawm cov qauv metallographic hauv cov vuam thiab lub hauv paus hlau, uas ua rau txo qis hauv cov khoom siv ntawm qhov chaw vuam. Kev ntsuas yuav tsum tau coj los ua kom zoo ib yam thiab sib xws. Cov txheej txheem vuam ntau zaus ntawm ERW steel kav ua rau lub raj tsis muaj qhov kub thiab txias gradient nyob ze ntawm ntug tsim ib cheeb tsam molten, ib cheeb tsam semi-melted, superheated qauv, ib qho chaw normalizing, tsis tiav normalizing cheeb tsam, tempering cheeb tsam. , lwm qhov chaw yam ntxwv. Ntawm lawv, cov qauv ntawm cheeb tsam superheated yog austenite vim qhov vuam kub siab tshaj 1000 ° C. Cov nplej loj hlob sai, thiab lub zog thiab nkig coarse siv lead ua theem yuav raug tsim nyob rau hauv txias txias. Tsis tas li ntawd, qhov muaj nyob ntawm qhov kub thiab txias yuav ua rau muaj kev ntxhov siab welding. Qhov no ua rau muaj qhov xwm txheej uas cov khoom siv kho tshuab ntawm thaj chaw weld qis dua cov khoom siv hauv paus thiab ua tiav lub cev seamlessness. Nws yog los ntawm cov txheej txheem kev kho cua sov hauv zos ntawm cov vuam seam, uas yog, siv cov khoom siv nruab nrab zaus induction cua sov los ua kom sov lub vuam seam rau AC3 (927 ° C), thiab tom qab ntawd ua cov txheej txheem cua txias nrog qhov ntev ntawm 60m. thiab ceev ntawm 20m / min, thiab tom qab ntawd dej txias thaum tsim nyog. Kev siv txoj kev no tuaj yeem ua tiav kom tshem tawm kev ntxhov siab, ua kom zoo thiab kho cov qauv, thiab txhim kho cov khoom siv dav dav ntawm qhov chaw vuam cua sov, tam sim no, lub ntiaj teb cov qib siab ERW feem ntau tau siv txoj kev no los ua cov txheej txheem welds, thiab tau ua tiav. cov txiaj ntsig zoo. High-quality ERW steel kav tsis yog tsuas yog Weld seam uas tsis tuaj yeem txheeb xyuas, thiab weld seam coefficient nce mus txog 1, ua tiav qhov sib tw ntawm qhov chaw weld thiab cov khoom siv hauv paus. ERW steel kav muaj qhov zoo ntawm kev siv cov kub dov coils raws li cov khoom siv raw, thiab cov phab ntsa tuab tuaj yeem tswj tau tib yam li ntawm ± 0.2 hli. Ob qhov kawg ntawm cov yeeb nkab steel Raws li American APl tus qauv lossis GB / T9711.1 tus qauv, nws muaj qhov zoo ntawm qhov kawg beveling thiab kev xa khoom ntev. Nyob rau hauv xyoo tas los no, ntau yam kev lag luam roj xa hluav taws xob network thiab cov tuam txhab roj tau siv dav siv ERW steel kav raws li cov kav hlau loj hauv cov kav dej hauv nroog.