摘要
为解决锰合金的成型粒化问题,使锰合金在冷却凝固时不自然开裂,采用了浇铸时施加电磁场作用于凝固前的锰合金液体上,对其凝固特性进行了研究。发现了虽然锰是弱磁性材料,但在适当的磁场作用下,锰合金液体的结晶也受到磁场很大的影响。外磁场可以改变锰材料的显微组织,使其不产生常见的尖锐的枝状晶,而凝固成为钝化的圆角晶粒,使应力集中降到最小状态,这样在冷却后可以不开裂,再配合以其他工艺可以使其满足粒化成型的要求。
In order to solve the problems of forming and granulation for ferromanganese, make ferromanganese crack in cooling solidification unnaturally, it exerts electromagnetic field on liquid fezTomanganese before solidification in casting, and studies its solidification property. Even if manganese is low-magnetic raw material, the crystallization of liquid ferromanganese can be greatly affected under appropriate magnetic field. External magnetic field can change manganese microscopic structure, it can solidify manganese to passive circular bead crystal grain but not sharp dendritic crystal. All the stress reduces to a minimum value, which can＇t be cracked in cooling. Combined with other technologies, it can satisfy granulation and forming.
出处
《铁合金》
2015年第8期24-27,共4页
Ferro-alloys
关键词
锰
粒化
电磁场
凝固
manganese, granulation, electromagnetic field, solidification
