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In order to solve the problems of equipment shutdown and environmental pollution caused by the falling of the oxide scale of the hot-rolled strip used in the production of beam parts, this paper took the conversion and switching of EPS steel plate as the main research object, analyzed the causes for the falling of hot-rolled strip oxide scale during the rolling process by means of test verification and genchi genbutsu, analyzed the technical advantages of high surface quality of EPS steel plate and no need for shot blasting after the parts were formed. The paper proposed technical requirements of EPS materials: the yield strength of the steel plate is 530 MPa~560 MPa, the tensile strength is 600 MPa~630 MPa, the elongation after breaking is ≥22%, and the cold bending performance requirements need to be met. The average surface roughness Ra≤5.0 μm after EPS treatment. Finally, it led to the switch of EPS steel plate production.
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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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