Kev tshem tawm sai ntawm oxide nplai los ntawm hydrochloric acid electroplating ntawm hluav taws xob cua sov raj

Kev tshem tawm sai ntawm oxide nplai los ntawm hydrochloric acid electroplating ntawm hluav taws xob cua sov raj

1 Kev Tshawb Fawb Txog Kev Tshawb Fawb

1.1 Pob zeb diamond daim tawv nqaij tsis zoo

Cov tawv nqaij oxide nyob rau saum npoo ntawm cov hlau, yog tsim los ntawm oxidation nyob rau hauv huab cua saum toj no 80 degree C, yog dub Feo nyob rau hauv lub innermost txheej, F Ji 04 nyob rau hauv nruab nrab, thiab FeZO3 nyob rau hauv lub sab nrauv txheej. Yog tias tsim los ntawm oxidation hauv huab cua qis dua 60 degree, nws yog tsim los ntawm Feso4 thiab FeZ. Feo yog yooj yim soluble nyob rau hauv acids, Fe304, thiab residues., Cov txheej yog ntom thiab nyuaj rau yaj nyob rau hauv acids.

1.2 Pickling mechanism

Hlau thiab hlau oxide scale yog tsuas yog tshem tawm los ntawm kev sib cais, mechanical peeling, thiab txo.

1.2.1 Kev Txiav Txim Siab

Cov tawv nqaij oxide reacts nrog acid thiab yaj.

1.2.2 Mechanical Peeling

Acid tuaj yeem nkag mus rau sab hauv los ntawm cov tawv nqaij xoob thiab ntxeem tau oxide thiab hnov ​​​​mob nrog cov hlau matrix los tsim cov roj hydrogen. Hydrogen gas plays lub luag haujlwm txhua yam hauv kev tawg thiab tev tawm ntawm daim tawv nqaij oxide, txhim kho kev ua haujlwm ntawm cov kua qaub. Ua kom qhov kub thiab txias yuav pab kom nrawm nrawm ntawm kev khiav tawm ntawm cov pa roj hydrogen thiab ua kom tshem tawm cov tawv nqaij oxidized.

1.2.3 Txo

Tus tshiab ecological atomic hydrogen tsim los ntawm cov kua qaub ntxuav cov tshuaj tiv thaiv txo trivalent hlau oxide rau ferrous oxide uas yooj yim reacts nrog acid, thiab ces nws raug tshem tawm los ntawm reacting nrog acid.

1.3 Feem ntau siv pickling kua

1.3.1 Hydrochloric acid

Hydrochloric acid muaj ib tug ceev descaling tus nqi, siab chemical dissolution tus nqi, thiab zoo nto zoo ntawm lub workpiece. Tus nqi ntawm kev tshem tawm oxide nplai ntawm qhov kub thiab txias yog siab dua li ntawm sulfuric acid, tab sis cov neeg kho tshuab tev muaj peev xwm tsis zoo thiab qhov chaw tsim khoom hnyav. Hydrochloric acid muaj zog volatility thiab ua rau khaus heev, ua rau nws tsis haum rau kev siv cua sov. Hydrochloric acid pickling tuaj yeem yooj yim ua rau corrosion ntau dhau.

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