Study of Manufacturing Process of Holes in Aeroengine Heat Shield

Table 4

Analysis table of orthogonal test.

Factors
Level
Level 1 mean	65	50.25	65.50	80	80
Level 2 mean	50.75	63	64.25	80	67.5
Level 3 mean	68.50	80.50	69	66.25	65
Level 4 mean	80.50	71	66	38.5	52.25
Extreme difference	29.75	30.25	4.75	41.5	27.75