| 摘要 |
<p>PURPOSE:To provide composite alloy cast iron having excellent durability and corrosion resistance by adding Al to the molten cast iron obtd. by melting an iron raw material, limestone, coke, silica, an alkaline metallic salt of titanic acid, and a compd. contg. a graphite stabilizing agent and bringing these materials into reaction with each other. CONSTITUTION:An iron raw material consisting of fresh pig iron, iron scrap, and steel material, limestone, coke, silica, an akaline metallic salt of titanic acid, and a compd. contg. a graphite stabilizing element are melted and are brought into reaction with each other to produce molten cast iron. Molten Al is added and mixed to and with such molten iron, whereby composite alloy cast iron is produced. The Al component in the composite alloy cast iron is about 0.1-10wt%, the Ti component about 0.1-10wt%, the Ca component about 0.00001-0.1wt%, the alkali metal component is Li, K, Na and about 0.001-1wt%, the C component about 1.5-3.0wt%, and the Si component about 4-8wt%. The compd. contg. the lead stabilizing element is ferromanganese, etc. and is incorporated at about 0.02-8wt%.</p> |
