mill scale 예문

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1. Mill scale is a nuisance when the steel is to be processed.
2. Mill scale is composed of iron oxides mostly ferric and is bluish black in color.
3. The original mixture, as invented, used iron oxide in the form of mill scale.
4. Thus mill scale can be removed from steel surfaces by flame cleaning, primers over which welding can be done safely.
5. Therefore, chemical or mechanical cleaning after initial hydrotesting, might be the best option for removing mill scale and any corrosion products.