Numerical Simulation on Impeller Casting Defects and Optimization

Table 3

Orthogonal test datasheet.

Test no	Pouring temperature (°C)	Preheat temperature (°C)	Pouring speed (mm·s^−1)	Porosity	Stress (MPa)	Impact value
1	680	220	35	0.752	2.74	77.94
2	680	250	45	0.738	3.32	77.12
3	680	280	55	0.715	3.67	75.17
4	700	220	45	0.662	2.83	69.03
5	700	250	55	0.601	3.38	63.48
6	700	280	35	0.639	2.58	66.48
7	720	220	55	0.702	2.71	72.91
8	720	250	35	0.649	2.65	67.55
9	720	280	45	0.651	3.14	68.24