| 摘要 |
<p>The invention relates to a powder which is used to protect spin cast moulds for cast-iron pipes. The inventive product comprises: an inoculant metal alloy; optionally, mineral powders; and a metal which is highly reducing and volatile at the temperature of the liquid iron. According to the invention, the use of said products prevents mould fouling and improves the surface condition of cast-iron pipes.</p> |
