(1) Hauv qab-pickling: Tom qab pickling, yog tias muaj cov cheeb tsam hauv cheeb tsam ntawm oxide nplai sab laug ntawm cov yeeb nkab steel, nws yog hu ua under-pickling defect.
Kev zam: Ua ntej, txo qhov nrawm nrawm. Yog hais tias nyob rau hauv-pickling tseem tshwm sim, tsim nyog nce lub pickling kub. Yog tias tsis muaj kev cuam tshuam tsis zoo nyob rau hauv, ces tsim nyog ua kom cov acid concentration.
(2) Tshaj-pickling: Thaum cov yeeb nkab steel nyob twj ywm hauv cov tshuaj pickling ntev dhau lawm, nws qhov chaw maj mam dhau los ua ntxhib thiab pitted, thiab phaj saum npoo tig dub, uas yog hu ua over-pickling.
Kev zam: Tsim nyog tswj qhov kub ntawm pickling, pickling ceev, pickling kua concentration, thiab ntxiv cov tshuaj tiv thaiv corrosion tsim nyog los tswj lub sij hawm thiab cov tshuaj tiv thaiv ntawm cov hlau substrate thiab cov kua qaub. Ntawm cov no, ntxiv cov tshuaj tiv thaiv corrosion yog ib txoj hauv kev yooj yim thiab siv tau zoo. Lub luag haujlwm tseem ceeb ntawm cov tshuaj tiv thaiv corrosion yog adsorb ntau nruj ntawm cov yeeb nkab steel nto dua li hydrogen, yog li txhim kho cov tshuaj tiv thaiv hydrogen thiab txo qhov nce thiab poob ntawm electrons.
