Full
Outline
In order to eliminate the defect of fish eye on the surface of outer ring of cold rolled material after pickling rolling process, its micro structure and component were analyzed with the metallographic microscope, scanning electron microscope and energy spectrum as well as the effects of straightening and withdrawing weld joint on the defect were compared. The results showed that the defect was the iron matrix and the oxygen was not detected. There were different degrees of fish eye and porphyritic defects on the steel coils at the outlet of tandem mill observed when passing the weld joint without the stretcher leveler, while the defects were not found on the surface of steel coils when passing the weld joint in the stretcher leveler, so the problem could be solved by setting reasonable elongation of straightening and withdrawing.
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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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