1. Chemical composition
The shell casting adopts ZG270-500. The alloy has certain plasticity and toughness, high strength and hardness, and its microstructure is austenite and ferrite. It has good machinability, and can also bear large loads. Its chemical composition is shown in the table.
ω(C) | ω(Mn) | ω(P) | ω(S) | ω(Fe) |
0.4-0.5 | 0.7-0.8 | 0.04 | 0.05 | Allowance |
2. Structural model
The shell casting is hollow, with high internal surface quality requirements and large local thickness. The shell casting has a mass of 392.93kg and an overall dimension of 812mm × 525mm × 356 mm, the average wall thickness of shell casting is 8 mm. The shell casting drawing is shown in the figure.
