风电电机端盖低温球墨铸铁件消失模铸造技术

Lost Foam Casting Technology for Low Temperature Nodular Cast Iron of Wind Power Motor End Cover

介绍了低温高韧性球墨铸铁电机端盖的消失模铸造工艺。低温球墨铸铁电机端盖模样采用EPS板材加工而成,EPS板材的密度18 g/dm^3,从泡沫模样的涂料涂刷与烘干,装箱造型等关键工艺控制变形;分析了消失模铸造生产低温球铁的原材料、化学成分选择、球化处理、孕育处理等工艺过程。结果表明,消失模铸造低温高韧性球墨铸铁电机端盖铸件力学性能、材质达到了同类产品先进的技术水平,电机端盖低温高韧度球墨铸铁件表面质量好,没有夹渣、加砂、冷隔、变形等缺陷,可批量生产。

The lost foam casting process of motor end cover with low temperature and high toughness ductile iron was introduced. Low-temperature nodular iron motor end cover shape was processed by EPS plate, the density of EPS plate is18 g/dm^3, and deformation was controlled by key technologies such as foam shape coating, drying and packing molding.The raw materials, chemical composition selection, spheroidization treatment and inoculation treatment of low temperature ductile iron produced by lost foam casting process were analyzed. The results show that the mechanical properties and materials of motor end cover casting of lost foam casting process with low temperature and high toughness ductile iron have reached the advanced technical level of similar products. Motor end cover low temperature high toughness ductile iron has nice surface quality, no slag, sand, cold insulation, deformation and other defects, and it can be mass production.