Me txoj kab uas hla steel yeeb nkab yog tsuas yog siv nyob rau hauv cov roj, natural gas pipeline.Lub taub me me steel yeeb nkab muaj ib sab welding thiab vuam los ntawm ob sab, welded yeeb nkab yuav tsum xyuas kom meej tias qhov ntsuas dej siab, lub zog tensile thiab txias bending zog ntawm lub vuam raws li kev cai.Me me txoj kab uas hla steel yeeb nkab yog tsim los ntawm lub siab zaus vuam tshuab rau tej yam specifications ntawm sawb steel kauj rau hauv lub voj voog raj thiab ncaj seam welded steel yeeb nkab.Cov duab ntawm me me txoj kab uas hla steel yeeb nkab tuaj yeem yog puag ncig, kuj tuaj yeem yog square lossis aliens, ncaj seam yeeb nkab nyob ntawm qhov loj me tom qab vuam.

High zaus vuam ntawm me me txoj kab uas hla steel yeeb nkab yog siv cov nyhuv ntawm daim tawv nqaij thiab cov nyhuv sib thooj ntawm alternating tam sim no (ac), steel (strip) tom qab dov txoj kev, tsim ib tug ntoo khaub lig seem ntawm tawg ncig lub raj billet, ncaj seam tube billet nyob ze ntawm qhov chaw ntawm induction. coil rotating ib los yog ib txheej ntawm impedance (sib nqus) thiab impedance thiab yeeb nkab qhib lub voj electromagnetic induction voj, nyob rau hauv qhov kev txiav txim ntawm cov nyhuv ntawm daim tawv nqaij thiab cov nyhuv sib thooj, cov yeeb nkab qhib npoo tsim muaj zog thiab concentrated thaum tshav kub kub nyhuv, ua rau weld ntug sai rhuab mus. yuav tsum tau tom qab cov menyuam extrusion kub, vuam hlau molten lub xeev kom paub qhov sib koom ntawm cov siv lead ua, ncaj seam tsim los ntawm txias ib tug khoom raj taub qab weld.

Qhov me me txoj kab uas hla steel yeeb nkab vuam seam shrinkage induced lub zos strain feem ntau ncav cuag qhov taw tes tawm ob peb zaug, uas yog ntau loj tshaj lub load los ntawm strain;Qhov seem kev ntxhov siab tshwm sim los ntawm qhov tsis sib xws.Residual stress yog tsis muaj sab nraud quab yuam nyob rau hauv lub sij hawm sib npaug ntawm qhov kev txiav txim ntawm kev ntxhov siab thiab txhua yam ntawm cov ntoo khaub lig ntawm cov kub dov steel muaj qhov seem ntawm qhov kev ntxhov siab, qhov loj dua qhov sib npaug feem ntau steel, qhov seem ntawm kev ntxhov siab ntau dua.Txawm hais tias qhov seem ntawm kev ntxhov siab yog theem sib npaug, tab sis kev ua haujlwm ntawm cov tswv cuab steel nyob rau hauv qhov kev txiav txim ntawm sab nraud quab yuam tseem muaj qee yam cuam tshuam.Xws li cov deformation, stability, qaug zog, thiab lwm yam, yuav ua rau muaj kev cuam tshuam tsis zoo.