PDF
Full
Outline
The feedback of user is that the elongation of cold rolled sheet with cold rolled base material SPCC manufactured by 2 250 mm production line after cold rolling and annealing is low, part of flow forming is not easily to form in punch forming process and cracking rate is higher. The cause analysis showed that its high Mn content was one of the causes for slightly higher strength of steel strip so that elongation was low and steel strip was easy to crack; cooling modes of the two production lines were different, the cooling mode of preconcentration was adopted by 2 250 mm production line and the cooling mode of predispersion was adopted by CSP production line so that the strength of hot rolled steel strip manufactured by 2 250 mm production line was slightly higher, elongation was low and steel strip was easy to crack. The elongation of hot rolled steel strip manufactured with raw materials with thickness of 3.0~5.0 mm by 2 250 mm production line is lower than that of hot rolled steel strip manufactured by CSP production line so that the elongation of cold rolled steel strip after cold rolling and annealing is also slightly higher due to the “heredity” of rolling.
PDF
172
81
| 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 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62199257
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
