我厂经过反复实践,掌握了铁素体球墨铸铁工艺,并且用来生产汽车减速器壳和制动蹄片(图1)。铁素体球铁有下列优点: 1.提高产品质量。可锻铸铁机械性能要求为37—12,我厂生产的可锻铸铁性能已达到40—14以上,而我厂现生产的铁素体球铁机械性能超过了50—15,冲击值为5公斤米/厘米~2。用铁素体球铁生产的零件强度高、韧性好、表面光洁、易于清理。2.降低废钢用量。炼制可锻铸铁一般需 I plant after repeated practice, mastered the ferrite nodular cast iron process, and used to produce automobile reducer shell and brake shoe (Figure 1). Ferrite ductile iron has the following advantages: 1. To improve product quality. Malleable cast iron mechanical performance requirements of 37-12, I plant the production of malleable cast iron performance has reached more than 40-14, and I plant is now produced ferrite ductile iron mechanical properties of more than 50-15, the impact value of 5 kg m / cm ~ 2. Ferritic ductile iron parts with high strength, good toughness, smooth surface, easy to clean. 2. Reduce the amount of scrap. Refining malleable iron generally required