Research on Friction Stir Spot Welding Brazing Process and Properties of Dissimilar Metals DP590 and 6061

Table 2

Three factors and three levels selected in the orthogonal test.

Level	Factor
	A	B	C
	Rotating speed (r/min)	Residence time (s)	Pressing depth (mm)
1	1000	60	0.1
2	1200	90	0.2
3	1500	120	0.3