Ua ntej cov txheej txheem pickling, nws yog ib advisable mus preheat lub steel yeeb nkab blanks nyob rau hauv dej kub ntawm ib tug kub ntawm 25-50 degree rau 1-3 feeb ua ntej pib nrog pickling. Qhov no ua haujlwm rau ntau lub hom phiaj:
(1) Nws tshem tawm cov ntaub ntawv hlau, ntau yam av, thiab cov roj me me uas ua raws li cov yeeb nkab steel uas tsis tau ua tiav alkaline tu, thiab nws kuj tseem txhim kho cov nyhuv neutralizing rau steel yeeb nkab blanks uas tau ua tiav alkaline tu.
(2) Preheating cov yeeb nkab steel blanks accelerates tus txheej txheem pickling.
(3) Nws txo qhov kev noj ntawm cov cua sov ncaj qha rau cov tshuaj pickling, yog li txuas ntxiv cov nyhuv dilution ntawm cov kua qaub.
(4) Cov kua qaub tseem huv dua, ua rau cov khoom noj zoo dua.
(5) Nws txuag kwv yees li 2 mus rau 3% ntawm acid noj.
