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The packaging capability of Φ159 mm PQF hot continuous rolling steel pipe unit of Baotou Steel is unmatched with previous process due to its inadequate design and new packaging standard of steel tube is implemented. As a result, the steel tubes are piled up before packaging process so that the whole production line is restricted to reach target output and efficiency. In the paper, the causes restricting packaging capability are found through causal chain analysis and functional modeling with the theory of inventive problem solving (TRIZ). Such equipment as packer and storage rack of steel belt are designed and manufactured so that the bottleneck of packaging process capability is broken through and capacity balance between processes of the whole production line is realized. The yield and packaging quality of seamless tube are greatly improved through the successful reconstruction of packaging system.
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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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