Sample Cooling Curves from CE_Computer
lower left: Standard:, A: peak temp, or Tmax in CE cup. BC: start of freezing of Austenite iron; This temp. TL, is used to calculate CE, and then FC is calculated from CE
CD--growth of pro-eutectic, i.e. Austenite. DE: freezing of white eutectic, This Temp, TE, is used to calculate Si% in the melt. As soon as Si% is given, C% is then obtained from CE = C + (1/3)*Si.
Lower Right: hump at TE freezing. This means there is not enough Te in the melt. This may be caused by 1. Too low a melt temp in the cup, and not enough Te is absorbed by the melt. 2. Too much Ti % in the melt. Ti promotes gray solidification and therefore hinders the white tendency provided by Te.
Lower Left: Cooling curve resulted from a cup which T/C wire is shielded by qartz glass tube. Lower Righ: Cooling curve resulted from a cup which T/C wire is twisted and pretected by ceramic slurry coating.
Lower Left: Too little iron melt in the cup. TL solidification does not give out enough heat to maintain a horizontal BC and therefore cannot be detected by software.
Lower Right: Melt temp in the cup is not high enough. No peak temp ( A) can be found.
Lower Right: Tmax in the cup is too low, and not enough Te is absorbed into the melt. But TL is still good and still gives correct CE and FC. You just do not have a Si% reading from a humped TE. Lower Right: Peak temp is too low. The ideal Tmax is 1250~1300. In this curve, TE is no good and Si% is thus incorrect. Inspite of this, TL is still correct and the CE, FC given is quite O. K. 
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