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In order to avoid the patent limitation of hot stamping steel with traditional Al-Si coating, a new hot stamped steel with thin coating was developed. The mechanical properties of this steel sheet were ensured by strictly limiting the upper and lower limit of coating thickness. Tensile testing machine was used to verify the mechanical properties before and after heating, metalloscope was carried out to verify the microstructure and coating evolution before and after heating, the salt spray test was used to test the anti-corrosion property of steel sheet after hot stamping, welding glue applied on the existing production line was utilized to verify the glue matching properties of steel sheet, the existing production coating process was conducted to verify pre-treatment compatibility and electrophoretic coating performance of steel sheet. Result of all the verification indicates that the hot stamped steel with the new thin Al-Si coating meets the requirement of mechanical properties, anti-oxidation and anti-corrosion, in addition, it is compatible with the conventional welding and coating process.
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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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