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Outline
Non-oriented silicon steel is the core material for manufacturing iron core of motor as well as its performances directly determine the efficiency and service life of motor. Texture is one of the key factors affecting performances of non-oriented silicon steel, so it is necessary to research its evolution laws for improving product performances. In this paper, the textures of hot rolled plates, cold rolled plates and annealed plates with non-oriented silicon steels of different chemical compositions are detected as well as evolution laws of textures for non-oriented silicon steels with different production processes are studied with X-ray diffractometer. The results showed that there were no significant effects of chemical compositions on main texture types and strength of each texture was slightly improved by increasing Si content. The main texture type of hot rolled plates is Goss texture as well as the main texture types are α texture and γ texture after the treatment of pickling and tandem cold rolling process with total reduction ratio of over 80%. In the annealing process, the main textures of grain are γ texture and a small amount of Goss texture with the process of recovery, recrystallization and grain growth. The transformation of texture types with different production processes is related to different grain and matrix orientations. The texture types and strength of finished products could be optimized through the coordinating cooperation of such processes as hot rolling, cold rolling and annealing.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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