FIELD: continuous treatment of metal surface, in particular etching of low-carbon steel band in deep bath.
SUBSTANCE: claimed method includes band passing through bath of etching aggregate, divided onto four sections with hydrochloric acid solutions, wherein acid concentration is subsequently increased, and iron concentration is subsequently decreased. Low-carbon steel containing 0.05-0.11 vol.% of carbon is etched at temperature subsequently elevated from first to forth section according to equation: t = 5*(n+10)0C, wherein n is a section number.
EFFECT: etching aggregate of improved capability due to increased stimulation etching process; steel without underetching defects.
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| Title | Year | Author | Number |
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