Spinning Process Test and Optical Topography Measurement Technology for the Shell with Longitudinal and Latitudinal Inner Ribs

Table 3

Factors and levels in the orthogonal test.

Factors and levels	A-rotary wheel angle (°)	B-thinning rate Ψ (%)	C-feed rate f (mm/min)
1	15	40	100
2	17	43	120
3	20	46	150
4	22	50	180
5	25	53	220