Degrease qhov chaw nrog anhydrous ethanol los yog nruab nrab degreaser; so xoob xeb / nplai nrog cov nylon txhuam, ces cua- qhuav.
Npaj cov tshuaj pickling: 5-10% dilute hydrochloric acid / 8-12% phosphoric acid + 0.2-0.5% corrosion inhibitor (xws li urotropine), khaws cia ntawm 20-30℃.
Hnav cov kua qaub-cov hnab looj tes tiv thaiv, tsom iav, thiab ua haujlwm hauv qhov dej- qhov cua.
Txoj kev immersion: Submerge the plate fully for 10–20 minutes until the surface turns uniform silvery-gray (stop if oxide scales disappear; avoid over-pickling >30 mins).
Txoj kev tshuaj tsuag (rau daim hlau loj): Txau cov kua qaub sib npaug rau 8-15 feeb, ua kom cov av noo.
Yaug lub phaj kom huv si nrog dej huv, tom qab ntawd neutralize hauv 2-3% sodium hydroxide tov rau 2-3 feeb.
Yaug dua thiab qhuav kom huv si hauv 10 feeb siv lub tshuab ziab khaub ncaws / cua kub (tiv thaiv flash rust).
Rau natural patina siv: Siv xeb stabilizer/patina accelerator hauv 1 teev; kho 24-48 teev ntawm chav tsev kub.
Rau txheej siv: Siv cov primer sib xws (piv txwv li, epoxy zinc-nplua nuj primer) li ntawm 4-6 teev.
Ntsiab Lus
Tsis txhob muab cov phaj ua ntej xa-kev kho mob; pov tseg cov kua qaub tom qab neutralizing rau pH 6-8.
