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In the paper, it is studied the effects of alloy elements on microstructure, mechanical properties and resistance to scute burst of high strength enamel steel for inside liner of water heater as well as analyzed the mechanism of action of hot rolling process such as finish rolling temperature, coiling temperature and continuous annealing process of cold rolling on microstructure and mechanical properties. The trial production results showed that the yield strength was 245~272 MPa, tensile strength was 362~386 MPa and elongation was 39.0%~41.0% for the cold rolled high strength enamel steel, which could meet the production requirements of inside liner of water heater. Its microstructure is mainly composed of ferrite and pearlite as well as a little MnS and TiN particles were with dispersed distribution. It is further verified that the developed high strength enamel steel is with good resistance to scute burst through the sensitivity test of anti scute burst and test of end user.
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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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