【摘要】 针对ＺＬ２０２在生产汽油机活塞中出现的问题，通过采用旋转磁场的方法对ＺＬ２０２浇注过程进行处理，改善其结晶组织及性能，找出一种最佳工艺，满足生产的需要。更多还原

【Abstract】 Due to the problems emerged during the production of petrol engine piston with ZL202. A spinningmagnetic field has been applied in the casting process. So the crystal structure and property were improved. Productionrequirement were met with this process.更多还原