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The industrial trial production of corrosion-resistant rail is successfully realized through strictly implementing its process system of smelting, continuous casting, heating and rolling. The comprehensive detection for microstructure, mechanical performances and corrosion resistance of trial-produced rail is carried out. The results showed that the tensile strength of rail could reach over 1 050 MPa, top surface hardness of rail head (HBW) was over 300, cross section of rail was uniform perlite and trace amount of ferritic structure as well as lamellar spacing of pearlite was reduced by 21% compared with that of traditional hot rolled U75V rail. Compared with U75V rail, the corrosion resistance of trial-produced rail for simulating coastal atmospheric environment is improved by 45.3% and corrosion resistance of simulating acid rain is improved by 54.9%, which could reach the design indexes.
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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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