Nodularity ratio determined in 3 minutes after spheroidizing treatment
SGR-1000, SGR-2000
Feature
Nodularity measurement for cast iron SGR-1000 and SGR-2000
By switching on the device, measurement is started and a cooling curve is drawn on the screen.
After drawing the primary crystallization temperature and the eutectic temperature, the nodularity ratio is calculated and displayed.
Variation of nodularity ratio is displayed on a table and a graph.
Objectives of Development
In order to evaluate nodularity ratio of a spheroidal graphite cast iron melt before pouring, a computerized automatic thermal analysis method was developed, which is quick, simple, and high in precision.
The process of development of the new thermal analysis system
Step | Objective | Content |
---|---|---|
1 | Regression analysis | A multi-regression equation was obtained to give nodularity as a function of several singular points on a cooling curve. |
2 | First improvement for higher accuracy | Classification of cooling curves into several types. Multi-regression equation for each type. |
3 | Second improvement for higher accuracy | Multi-regression equation of nodularity as a function of the melt composition and the cooling curve. |
4 | Accuracy checking | Test application of the regression equation to a production line. |
5 | Device development | Development of an automatic device for thermal analysis data acquisition and regression analysis. |
Specification
SGR-1000
Dimensions | H270 × W230 × D80 (mm) |
---|---|
Option | Printer, QCPH |
CPU | DOS/V Personal Computer |
Monitor | TFT7.5" |
Temperature converter | JIS-K Measurement range ( 0 - 1370C) |
Keyboard | Designed keyboard (built in the body) |
Cup stand | One set |
Weight | 3.0kg |
SGR-2000
Dimensions | H350 × W310 × D80 (mm) |
---|---|
Option | Printer, QCPH |
CPU | DOS/V Personal Computer |
Monitor | TFT14" |
Temperature converter | JIS-K Measurement range ( 0 - 1370C) |
Keyboard | Designed keyboard (built in the body) |
Cup stand | One set |
Weight | 5.5kg |