Dunting In Ceramic

Dunting is cracking associated with too rapid a cool down of the kiln.

Dunting in ceramic.

According to wikipedia dunting is a fault that occurs during the firing of ceramic articles. The first occurs as you cool through the first silica inversion at 1063 degrees f. It is the cracking that occurs in fired ceramic bodies as a result of a thermally induced stress and is caused by a ware cooled too quickly after it has been fired although usually occurring during cooling dunts can also be caused by excessively fast heating rates. There are 3 main reasons why cooling dunts occur.

At these inversion points the structure of the silica molecules. If the ware is glazed the glaze edges are sharp. The reasons for that cracking can be many. It is the cracking that occurs in fired ceramic bodies as a result of a thermally induced stress and it is caused when a ceramic ware cools too quickly after it has been fired.

Dunting is a fault that can occur during the firing of ceramic articles. Heating dunts can be recognised by rounded. It is the cracking that occurs in fired ceramic bodies as a result of a thermally induced stress and is caused by a ware cooled too quickly after it has been fired although usually occurring during cooling dunts can also be caused by excessively fast heating rates. Dunting is a fault that can occur during the firing of ceramic articles.

Dunting is cracking associated with a very fast cool down of the kiln. Most dunting however is caused in cooling. They may be vertical horizontal or spiral. These stresses primarily occur during two critical points of firing called silica inversions which occur at 1063 degrees f 573 degrees c and 439 degrees f 226 degrees c.

These cracks appear as long clean body cracks with sharp edges. Heating dunts can be recognised by rounded.