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In this paper, the surface corrosion resistance of non-passivated galvanized steel strip DX51D+Z is studied with 24 h neutral salt spray test as well as the influences of such factors as amount of greasing on surface, standing time and surface treatment methods on formation of white rust on surface are investigated. The study results showed that the amount of greasing on surface and standing time after greasing were the main factors influencing corrosion resistance of non-passivated galvanized steel strip DX51D+Z. The corrosion resistance of non-passivated galvanized steel strip DX51D+Z could be effectively improved by optimizing such surface treatment processes as combining greasing in production line with manual greasing and controlling standing time after greasing within 96 h, which could meet the acceptance target of area of white rust on surface ≤5% after 24 h neutral salt spray test.
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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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