Fig. 1

Schematic diagram of the current heating device"

Fig. 2

Numerical simulation model of the continuous casting billet based on current heating"

Table 1

Chemical composition and mass percentage of the screw-thread steel %"

Fig. 3

Physical parameters of the screw-thread steel"

Fig. 4

Distributions of current density in the continuous casting billet"

Fig. 5

Variations of current density on longitudinal section of the continuous casting billet with heating time"

Fig. 6

Distribution of current density on longitudinal section centerline of the continuous casting billet"

Fig. 7

Distributions of current density on different horizontal section of the continuous casting billet"

Fig. 8

Variation of current density from core to center of the surface at the top of the continuous casting billet"

Fig. 9

Joule heat distributions in the continuous casting billet"

Fig. 10

Distributions of temperature on the horizontal middle section of the continuous casting billet"

Fig. 11

Variations of temperature from core to center of the surface at the horizontal section of the continuous casting billet"

Fig. 12

Distributions of temperature at the longitudinal section of the continuous casting billet"

Fig. 13

Variations of surface axial temperature of the continuous casting billet under different conditions"

Fig. 14

Variations of temperature from core to center of the surface at the cross-section of the continuous casting billet under different current frequencies"

Fig. 15

Temperatures of the head and tail of the continuous casting billet under different current frequencies"

Fig. 16

Variations of surface temperature of the continuous casting billet under different current frequencies"

Fig. 17

Distributions of temperature at the longitudinal section of the continuous casting billet under different moving speeds"

Fig. 18

Variations of surface axial line temperature of the continuous casting billet under different moving speeds"