Fluid-cored vuam hlau, ib yam tshiab ntawm cov khoom siv vuam uas tshwm sim tom qab vuam electrodes thiab cov khoom siv hlau, yog dav siv nyob rau hauv ntau yam arc vuam txheej txheem vim nws tshwj xeeb hlau txheej sheath thiab core flux hmoov qauv. Hom vuam txoj kev no yog sib sau ua ke hu ua flux-cored arc vuam (FCAW), thiab nws nthuav dav kev lag luam kev cia siab thiab kev loj hlob muaj peev xwm.
Txoj kev loj hlob ntawm flux-cored welding hlau tuaj yeem taug qab mus rau Tebchaws Meskas thiab Lub Tebchaws Yelemees hauv xyoo 1920, tab sis loj- daim ntawv thov tau pib hauv xyoo 1950. Tshwj xeeb tshaj yog tom qab xyoo 1960 thiab 70s, nrog rau kev qhia txog kev nplua - txoj kab uas hla (tsawg dua 2.0 mm) tag nrho - txoj hauj lwm flux- cored vuam hlau, cov khoom siv vuam no tau siv rau lub sijhawm ntawm kev loj hlob sai. Niaj hnub no, nyob rau hauv cov teb chaws tsim, kev ua lag luam thov rau flux-cored vuam hlau tau mus txog 20% mus rau 30%, thiab qhov kev faib ua feem no tseem nce ntxiv.
Kev tshawb fawb ntawm flux-cored welding hlau hauv kuv lub teb chaws tau pib xyoo 1960, thaum tshawb fawb txog kev tsim khoom thiab khoom siv. Los ntawm thaum ntxov 1980s, qee qhov kev tsim vaj tsev loj hauv tsev tau pib siv flux-cored vuam hlau feem ntau, txawm hais tias cov khoom no feem ntau yog imported. Nyob rau hauv nruab nrab -1980s, kuv lub teb chaws pib importing txawv teb chaws flux{10}}cored vuam hlau ntau lawm kab thiab cov qauv khoom. Los ntawm thaum ntxov 1990s, domestically tsim flux-cored vuam hlau tau ua tiav cov peev txheej ntau lawm.
Nyob rau hauv xyoo tas los no, kev siv txhua xyoo ntawm flux-cored vuam hlau nyob rau hauv Suav teb tau nce mus txog 10,000 tons, tab sis txhua xyoo cov khoom tsim tawm hauv tsev ua flux-cored vuam hlau tsuas yog nyob ib ncig ntawm 2,000 tons, deb ntawm kev ua lag luam hauv tsev. Txawm li cas los xij, kev txiav txim siab los ntawm kev txhim kho tsis ntev los no, cov khoom tsim hauv tsev ua tau zoo-cored vuam hlau thiab lwm yam thev naus laus zis tau ua tiav.
