无取向硅钢的磁性能计算.doc

无取向硅钢的磁性能计算


目  录
引  言 3
1  无取向电工钢概述 4
1.1 电工钢 4
1.2  电工钢织构及织构与磁性能的关系 4
1.3　热轧条件对无取向电工钢轧件织构形成的影响 6
1.4　冷轧条件对无取向电工钢再结晶织构的影响 7
1.5　有利织构控制在冷轧电工钢生产中的应用 10
1.6本文的研究内容和目的意义 13
2  实验方案 15
2.1 实验材料 15
2.2 再结晶退火 15
2.3 样品的制备和金相组织的观察 15
2.4试验所用的设备 16
3 再结晶组织观察 17
3.1不同温度退火后的显微组织 17
3.2 不同退火时间的组织观察 17
4  磁性能计算 19
4.1 磁晶各向异性能的唯象理论 19
4.2 磁晶各向异性能的计算与数学模型的建立 20
4.3 硅钢性能的定量计算 24
4.4单晶性能参数的确定 24
4.5软件的编制与数模的处理 25
4.6 计算结果与实验结果的比较 27
结论 32
致　　谢 33
参考文献 34
附录：计算源程序 36
 

摘  要
硅钢板是电力、电子和军工事业中不可缺少的重要软磁合金。无取向硅钢，由于其在各个方向上具有相同的磁性而被广泛用于各种电机。
磁性与物质的微观结构密切相关，它不仅取决于物质的原子结构，还取决于原子间的相互作用，如晶体结构。硅钢的组织、织构与硅钢的磁性能有着密切的联系，是决定硅钢磁性能的主要因素。
根据单晶体的各向异性，并通过织构数据，进而计算多晶体材料的宏观性能是材料织构定量分析技术的最重要应用之一。本文通过磁性唯象理论建立硅钢磁性计算模型，并据此模型，编写了磁性计算程序。根据磁性理论对无取向硅钢的磁性能进行了模拟计算，研究硅钢的磁性能和微观组织的关系。采用这种方法不仅能直接预测硅钢的磁性能，而且还可以免去复杂的性能测试工作，实现材料性能在线监控在生产中的应用。
磁性能是硅钢的最重要的性能指标，通过研究磁性能的计算可将磁性能和晶粒织构之间的关系描述的更精确。计算结果表明：磁性模拟计算的理论值与实测值吻合的较好。
 
关键词：无取向硅钢；织构；磁性能；计算程序

Abstract
Silicon steel is an important soft magnetic alloy in electricity, electronics and military. Non-oriented silicon steel, for the same magnetic is widely used in various motor.
The magnetism is closely related to micro-structure. It not only depends on the atomic structure of materials, but also on the interaction between atoms, such as the crystal structure. The silicon steel's texture and texture structure which are closely linked with the magnetic properties is a major factor of magnetic properties of silicon steel decision.
According to the single crystal anisotropy and texture data, It is found that the macro- performance of polycrystalline material is one of the most important application of the material texture's quantitative analysis. In this paper, the magnetism's calculating model which the magnetic procedure is got is by established based on the magnetic phenomenological theory .According to the theory of magnetic , The non-oriented silicon steel's magnetic properties can be simulated, and the relationship between silicon steel magnetic and micro-organizations  can be researched. This approach not only can directly forecast the silicon steel magnetic, but also can excuse the complex performance tests and realize the applications of on-line monitoring of performance in production.
Magnetic properties is the most important performance indicators of silicon steel. By the study, the relationship between magnetic properties and texture can be described accurately. The results show that: the magnetic simulation's theoretic date coincide the measured date coincide well.

Keywords:
 non-orientation silicon steel; texture; magnetic property; computational procedure