The square expendable carbon cup is for determining the Carbon equivalent, % Carbon and % Silicon in molten iron by using the principle of thermal analysis.
• International standard specification.
• Japan-imported couple wire.
• High accuracy, rapid reaction, reliability, stability, smooth cooling curve and good reproductivity.
• Sold to Japan, Korea, Thailand, Malaysia, Taiwan etc.
Determination of thermal stability of sample cup And Instrument Adjustment
One: option of instrument and electric furnace
Be sure to select the specific carbon silicon analyzer and hot metal within the specified test furnace. the replacement of components when the next test furnace hot metal will be change.
Two: data testing methods
Example: Thermal analysis of the test sample cup should be 3 to 5 consecutive (arrange it according the time), e.g. the test result of Si% is 1.80%, 1.82%, 1.86%, 1.88%, 1.90%. Testing is completed record data.
Stability. According above testing result, the highest one is 1.80%, lowest one is 1.70%, fluctuation gap is 0.1, average value is 1.75% (±0.05).
If the chemical analysis of Si% molten iron content was 1.85% when the original apparatus should be set based on the si values of 0.1 and then raised to complete the adjustment (if the former setting of Si is -0,2, should change at -0.1). when test again, the content of Si% will become 1.85%, the adjustment is over, can work now.
1）the hot metal temperature in the sample cup should not exceed 1350 ℃.
2）Optimum temperature of ductile iron is 1200 ℃ ~ 1250 ℃.
3）Optimum temperature of Gray Iron 250, 300 is 1250 ℃ ~ 1350 ℃
4）The abnormal situation like low carbon high silicon hot metal composition will cause instruments to measure the normal C% and Si% no data.
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