By controlling knock-out time, bainitestructure was obtained in the as-cast low-carbon ductile iron cast with EPC process.
采用消失模铸造工艺，经准铸态贝氏体工艺处理后，得到了贝氏体组织。
2
Test results show that non-metallic inclusion and bainitestructure in the steel are main factors affecting the elongation.
试验结果表明：钢中非金属夹杂物和贝氏体组织是影响伸长率的主要因素。
3
It shows that even granular bainitestructure can be obtained in the condition of air quenching. The temper resistance is better and comprehensive mechanical properties of the steel are higher.