摘要
在二次加热过程中,为了使坯料中的温度均匀分布并获得细小的球化组织,必须准确控制加热电流、加热时间与坯料温度之间的关系。以A356合金为对象,采用中频电磁感应器进行了二次加热工艺的研究。结果表明,对于尺寸为45mm×70mm的棒状坯料,线圈尺寸取70mm×100mm,加热路线采用三段加热+保温,经过约10min的二次加热,坯料达到了预期的状态,可以满足后续成形的要求。
In the reheating process, the relationship between the reheating current, time and billet temperature must be strictly controlled to obtain the uniformly distributed temperature and spheroidized microstruc-ture in the billets. The reheating process for A356 a-luminum alloy was conducted with main frequency induction furnace. The results verify that rod billet with 45mm in diameters and 70mm in height can reach de-sirable state to meet the next process using the coilwith 70mm in diameters and 100mm in height throughthree stages reheating and holding time for about 10min.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2006年第12期781-783,共3页
Special Casting & Nonferrous Alloys
基金
航天支撑技术基金资助项目(2002-HT-QHDX)
