我国日用搪瓷行业中的鉄坯延伸模具材料是生产中的一个难题。由于搪瓷鉄坯延伸模具的工作条件,要求材料应具有較高的整体硬度(RC 45左右),較好的韌性,能切削加工,要求不經热处理鑄态使用,而且要价格低廉。因对材料要求較高,所以各地搪瓷厂虽先后試用过高牌号灰鑄鉄、球墨鑄鉄及某些合金鑄 China daily enamel industry in the billet extension die material is a production problem. Due to the working conditions of enamel billet extension mold, the material should have high overall hardness (RC 45 or so), good toughness, and can be machined, requiring no as-cast as-cast and low cost. Due to the higher requirements of the material, so throughout the enamel factory has trial high brand gray cast iron, ductile iron and some alloy cast