Determination of enamelled piece resistance of sudden heat exchanges
Enamelled plate to be subjected to thermal shock test-Grid is kept at 320 degrees for 15 minutes.
It is left in a container filled with cold water.
Surface control is performed.
The same process is repeated by increasing the degree by 20 degrees if there is no distortion on the surface.
Every time the cold water in the container is replaced.
The process is terminated to the extent that surface degradation or chip off is present.
The test method may vary according to the sector requirements.