44. Vim li cas koj thiaj li yuav tsum tau nqa thiab txo cov kav hlau steel ob peb zaug thaum lub sijhawm ua kua qaub?

Hauv cov txheej txheem acid pickling ntawm cov kav hlau txuas, nws yog ib qho uas yuav tsum tau saib xyuas tias cov kav dej tau khaws cia hauv lub tank yog ncua sij hawm nqa thiab txo qis ob peb zaug. Qhov no yog txoj kev yooj yim tshaj plaws ntawm cov txheej txheem viav vias pickling. Txoj kev no tsis tsuas yog khaws cia tab sis txhim kho qhov zoo ntawm viav vias pickling. Thaum cov kav dej raug tshem tawm thaum lub sij hawm pickling, diluted pickling tov nyob rau hauv, nrog rau cov pa paug xws li hydrogen, impurities, thiab hlau oxide scale, yog zoo ntws tawm. Thaum lub sij hawm txo qis, cov kua txiv hmab txiv ntoo tshiab nkag mus rau hauv cov yeeb nkab sab hauv thaum qhia cov pa oxygen los ntawm huab cua, ob qho tib si uas ua rau kom ceev cov pickling. Txij li thaum cov phab ntsa sab hauv lub sijhawm pickling yog hnyav dua li phab ntsa sab nrauv, cov kev daws teeb meem zoo li qub yuav ua rau cov phab ntsa sab nrauv tau kho tag nrho thaum cov phab ntsa sab hauv tseem tsis kho. Yog tias txuas ntxiv, qhov no tuaj yeem ua rau phab ntsa sab hauv tau kho tag nrho thaum lub phab ntsa sab nrauv twb dhau lawm -pickled. Kev ntxhov siab ntawm cov tshuaj pickling thiab lub viav vias ntawm cov kav dej zoo tiv thaiv qhov teeb meem no. Kev rov lifting thiab txo qis ntawm cov bundled steel kav ua hauj lwm precisely lub hom phiaj no.