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The microstructure and texture of ingot blank, hot rolled steel plate, cold rolled steel plate and annealed plate are studied with the optical microscope (OM) and X-ray diffractometer (XRD) as well as the magnetic properties are tested with magnetic tester. The results showed that the central equiaxial crystal ratio of continuous casting billet could reach 44.5% with electromagnetic stirring, surface structure of hot rolled steel plate was with perfect recrystallization by adopting high temperature coiling process and average grain size was 28.5 μm as well as the microstructure in the center of hot rolled steel plate was with interlaced composition of recrystallized grain and long strip shape banded microstructure and average grain size of annealed plate was 74.2 μm. The distribution of texture in the thickness direction of hot rolled steel plate is uneven. The surface textures are mainly brass texture and goss texture, textures of 1/4 layer are mainly {100} and {112} components, central textures are mainly {100} and {110} components as well as textures of annealed plate are mainly composed of {111} and weaker {100} planar textures. The magnetic property of sample plate of finished product randomly drawn is measured with the Epstein square method and the results could meet user requirements.
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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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