Crossword clues for rouging
rouging
The Collaborative International Dictionary
Rouge \Rouge\, v. i. [imp. & p. p. Rouged; p. pr. & vb. n. Rouging .] To paint the face or cheeks with rouge.
Wiktionary
vb. (present participle of rouge English)
Wikipedia
Rouging refers to a form of corrosion found in stainless steel. It can be due to iron contamination of the stainless steel surface due to welding of non-stainless steel for support columns, or other temporary means, which when welded off leaves a low chromium area.
There are three classes of rouging: Class I, Class II, and Class III.
Class I - stainless steel surface and the Cr/Fe ratio [this term needs to be defined] of the metal surface beneath such deposits usually remain unaltered.
Class II - Iron particles originating in-situ on unpassivated or improperly passivated stainless steel surfaces. By their formation the Cr/Fe ratio of the metal surface is altered.
Class III - Iron oxide (or scale) which forms on surfaces in high temperature steam systems. The Cr/Fe ratio of the protective film is usually altered.
Usage examples of "rouging".
It was truly down, as though toward a valley, and it was into a valley we came to see the first light of dawn rouging the heights before us, brightening the cliffs with morning while the forests lay still in night below.