Brazed Kauv Fin Tubes

Txoj kev no kim heevvim nws tus nqi siab, yog li lwm txoj kev yog feem ntau siv, uas yog, cov yeeb nkab qhwv nrog steel strips muab tso rau hauvzincda dej rau tag nrho kub-dip galvanizing xwb. Siv cov txheej txheem kub-dip galvanizing, txawm hais tias cov txheej txheem plating tsis tas yuav nkag mus rau hauv qhov sib txawv me me ntawm cov fin thiab cov yeeb nkab steel, cov txheej txheem tiav galvanized yog tsim rau sab nrauv ntawm fin thiab sab nrauv ntawm cov yeeb nkab steel. Tag nrho cov kub-dip galvanized kauv finned raj yog txwv los ntawm lub thickness ntawm galvanized txheej (thaum lub galvanized txheej yog tuab, zinc txheej muaj tsis zoo firmness thiab yog ib qho yooj yim mus poob), thiab cov zinc kua tsis tuaj yeem nkag mus rau hauv qhov sib txawv. . Kev sib txuas ntawm cov kav hlau steel tseem tsis siab. Tsis tas li ntawd, lub tshav kub hloov pauv coefficient ntawm zinc yog me dua li ntawm cov hlau (txog 78 feem pua ​​​​ntawm cov hlau), yog li lub peev xwm hloov hluav taws xob tsawg. Zinc yog yooj yim corroded nyob rau hauv acid, alkali thiab sulfide. Yog li ntawd,galvanized kauv finned tubes tsis haum rau ua cua preheaters(recovering boiler flue gas khib kub).