Table 6 Ln (theta) temperature time, D = 10 mm controlled at 115 °C W-JIC and A-JIC
Water impingement jet cooling (W-JIC) | Air impingement jet cooling (A-JIC) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
T = 450 °C at D = 10 mm (H = 115 mm) | T = 450 °C at D = 10 mm (H = 115 mm) | ||||||||
Ts | Tf | Theta | t (s) | Ln (theta) | Ts | Tf | Theta | t (s) | Ln (theta) |
450 | 50 | 1 | 0 | 0 | 450 | 45 | 1 | 0 | 0 |
400 | 50 | 0.875 | 40 | −0.13353 | 400 | 45 | 0.876543 | 120.2 | −0.13177 |
350 | 50 | 0.75 | 80 | −0.28768 | 350 | 45 | 0.753086 | 240.4 | −0.28358 |
300 | 50 | 0.625 | 120 | −0.47 | 300 | 45 | 0.62963 | 360.6 | −0.46262 |
250 | 50 | 0.5 | 160 | −0.69315 | 250 | 45 | 0.506173 | 480.6 | −0.68088 |
200 | 50 | 0.375 | 200 | −0.98083 | 200 | 45 | 0.382716 | 601.8 | −0.96046 |
150 | 50 | 0.25 | 240 | −1.38629 | 150 | 45 | 0.259259 | 721.2 | −1.34993 |