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Projection welding of M12 ring convex welding nut and 2.5 mm thick plate has the defect of faulty welding, using energy storage welding machine in place of power frequency convex welding machine can solve the defect of faulty welding. There is an optimal combination of welding voltage, tempering voltage and welding pressure in the welding parameters of the energy storage welder. The orthogonal test is suitable for optimizing the optimal welding parameters. The optimized parameters (welding voltage 650 V, tempering voltage 650 V, welding pressure 16 kN) were used for test welding to obtain a convex welding joint with ejection force of 33.55 kN, which was greater than the target value of 16 kN. The high strength joining between ring convex welding nut and thick plate is realized, proving that the capacitor energy storage welding machine has the advantages of energy saving, high efficiency and stable welding quality, which is suitable for the welding between large nut sizing over M10 and thick plate.
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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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