HT350高牌号合成铸铁的工艺实践

Process Practice of HT350 High Strength Synthetic Cast Iron

根据HT350轴套铸件结构特点及技术要求,制定了合成铸铁熔炼工艺。熔炼炉料主要采用废钢、回炉铁、增碳剂,同时添加少量的合金元素。通过对原材料及化学成分的严格控制及采用长效孕育剂、瞬时孕育工艺,成功地试制了壁厚为50～100 mm的HT350轴套。这为生产高牌号HT350的合成铸铁件提供了宝贵的经验。

According to the structural characteristics and technical requirements of HT350 bushing ring castings, the smelting process of the synthetic cast iron was determined, in which the scrap steel, returning iron, carburetant, etc. were utilized and a small amount of alloying elements were added. Through strict control of raw materials, chemical composition, and the use of permanent inoculant and instantaneous inoculation process, HT350 bushing ring with wall thickness of 50-100 mm was successfully produced. This will provide valuable experience for the production of high grade HT350 synthetic iron castings.