Out-of-line annealing txhais tau hais tias lub recrystallization annealing ntawm kub los yog txias dov steel phaj yog nqa tawm nyob rau hauv lub hauv qab hom annealing rauv los yog npog hom annealing rauv ua ntej nkag mus rau lub kub plating hlau kab, thiaj li hais tias tsis muaj annealing txheej txheem nyob rau hauv lub galvanized. kab.Lub phaj hlau yuav tsum tuav kom huv si ntawm cov hlau ntshiab, tsis muaj oxides thiab lwm yam av, ua ntej kub dip galvanizing.Nyob rau hauv txoj kev no, lub annealed nto oxide daim ntawv yog thawj zaug tshem tawm los ntawm pickling txoj kev, thiab ces coated nrog ib txheej ntawm zinc chloride los yog ib tug sib tov ntawm ammonium chloride thiab zinc chloride hnyav rau kev tiv thaiv, thiaj li tiv thaiv lub phaj los ntawm oxidized dua.
Txoj kev no feem ntau yog siv cov kub dov laminated phaj ua raw khoom, lub annealed steel phaj yog thawj zaug xa mus rau lub rhiav pickling, nrog sulfuric acid los yog hydrochloric acid kom tshem tawm cov nto ntawm cov hlau ntawv oxygen kub galvanizing txoj kev.Tom qab pickling, steel phaj tam sim ntawd nkag mus rau hauv lub tank kom ntub thiab tos rau galvanized, uas tuaj yeem tiv thaiv reoxidation ntawm steel phaj.Tom qab pickling, dej ntxuav, nyem qhuav, ziab, rau hauv lub lauj kaub zinc, qhov kub thiab txias tau khaws cia ntawm 445-465 ℃.
Kub dip galvanizing yog ces oiled thiab chromed.Qhov zoo ntawm cov ntawv kub-galvanized ua los ntawm cov qauv no yog qhov zoo dua qub piv nrog rau cov txheej txheem ntub dej galvanizing.Nws tsuas yog tsim nyog rau kev tsim khoom me me xwb.Nruam galvanizing ntau lawm kab muaj xws li cov txheej txheem pretreatment, xws li alkali degreasing, hydrochloric acid pickling, dej ntxuav, hnyav txheej, ziab, thiab lwm yam., thiab thawj phaj yuav tsum tau annealed nyob rau hauv lub qhov cub ua ntej nkag mus rau hauv galvanizing kab.
Post lub sij hawm: 24-03-23