Test method for refractory plastics and ramming materials - Industry information

Test method for refractory plastics and ramming materials

Time:Jun 28, 2022
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Refractory plastics and refractory ramming materials are unshaped refractory materials that are constructed by tamping or ramming. Due to different binders, their plasticity or work performance is different. When the plasticity index is greater than 15, it is called plastic, and when it is less than 15, it is called ramming material. Dry vibrating material has no plasticity, but it is usually constructed by ramming. Except for the way the sample is formed, the performance testing methods for p...

When the plasticity index is greater than 15, it is called plastic, and when it is less than 15, it is called ramming material. Dry vibrating material has no plasticity, but it is usually constructed by ramming.

Except for the way the sample is formed, the performance testing methods for plastics and ramming materials are basically the same as for castable materials.

For refractory plastics and ramming materials, domestic laboratories generally use manual ramming methods or pressure testing machines.

Germany adopts an automatic tamping machine, ramming with an air hammer, and at the same time moving the mold back and forth at a uniform speed, and ramming in layers. In the American standard, the sample is prepared by the press molding method.