Technical support

DIK molten aluminium alloy cleanliness evaluation apparatus

This system measures the cleanliness of molten aluminium (fewer inclusions is better).

Appearance (may change depending on the specifications)



When the test samples are homogeneous, reproducibility is high, and variations are small.
(For low-cleanliness molten aluminium, samples are less likely to be homogeneous, and there may be some variation.)

Table. AD12.1 in DIK Shirakawa Plant

Sample Residue rate (%)
1 0.85
2 0.79
3 0.81
4 0.90
5 0.93
Average 0.86
Standard deviation 0.056


High correlation

Graph. Correlation with the added amount of machining dust


Testing is easy.
(Measurement of the number of inclusions, etc., in the microstructure is not necessary.)


Data do not depend on the measurer.

Measurement principles

The sample and filtrate weights are measured to calculate the residue rate with the formula below.

Test weight: weight of the test ingot
Filtrate weight: weight of the filtered molten metal

Figure. Conceptual diagram for the DIK molten aluminium alloy cleanliness evaluation system