37. Yuav ua li cas tsis zoo yuav tshwm sim thaum pickling, thiab yuav tiv thaiv lawv li cas?

(1) Hauv qab -acidizing: Tom qab cov kua qaub pickling ntawm cov kav hlau, cov hlau oxide seem ntawm qhov chaw raug xa mus rau hauv qab -acidizing defect.
Txhawm rau tiv thaiv qhov no, ua ntej txo tus nqi pickling. Yog hais tias tsis txaus pickling tseem, tsim nyog nce qhov kub ntawm pickling. Yog tias qhov tsis txaus tseem muaj, ces ntxiv cov kua qaub ntxiv.
(2) Tshaj -etching: Thaum cov kav hlau tau tso rau hauv cov tshuaj etching ntev dhau lawm, lawv qhov chaw maj mam tsim qhov ntxhib, pitted tsos nrog cov phaj dub, qhov tshwm sim hu ua dhau -etching.
Txhawm rau txhim kho cov txheej txheem, nws yog ib qho tseem ceeb kom tswj tau qhov kub thiab txias, tus nqi pickling, thiab cov kua qaub kua qaub, thaum ntxiv cov tshuaj tiv thaiv corrosion tsim nyog los tswj cov tshuaj tiv thaiv lub sij hawm thiab tus nqi ntawm cov hlau substrate thiab acid. Kev siv cov tshuaj tiv thaiv corrosion yog ib txoj hauv kev yooj yim thiab siv tau zoo. Cov inhibitors feem ntau ua haujlwm los ntawm adsorbing mus rau cov yeeb nkab steel nto nruj dua li hydrogen, yog li tswj tau cov tshuaj tiv thaiv hydrogen thiab txo qis kev hloov hluav taws xob.