Definition Of Shrinkage In Ceramics

Measure the shrinkage characteristics or measure the swelling characteristics.

Definition of shrinkage in ceramics.

If you work in a studio they will likely have this information and if you buy your own clay check with the ceramics store. More grog less shrinkage less grog more shrinkage. This when the water leaves the clay. As well as improving drying it can also improve drying shrinkage.

Shrinkage is a part of every retail company s reality and some businesses try to cover the potential decrease in profits by increasing the price of available products to account for the losses in. Sintering happens naturally in mineral deposits or as a manufacturing process used with metals ceramics plastics and other materials the atoms in the materials diffuse across the boundaries of the particles fusing the particles. This is a native material that was found on the banks of the south saskatchewan river near hayes alberta and brought to me for testing. A clay that has negative shrinkage during the glaze firing.

While drying shrinkage it can help reduce firing shrinkage. Soil with a high shrink swell capacity is problematic and is known as shrink swell soil or expansive soil. The size of the particles in the clay determines the size of the shrinkage and clay with grog in has much larger particles. Sintering or frittage is the process of compacting and forming a solid mass of material by heat or pressure without melting it to the point of liquefaction.

The amount of certain clay minerals that are present such as montmorillonite and smectite directly affects the shrink swell capacity of soil. Since it is not clay grog does not shrink as clay does. Lacking the microscopic size and shape of clay particles grog decreases the plasticity of the clay body but it does have a beneficial effect on shrinkage. The clay manufacturer or distributor should have specs including clay shrinkage at the various firing temperatures.

Shrinkage is a decrease in the size or amount of something. All ceramics shrink by around 6 percent when they are drying. Therefore its presence in clay reduces the overall shrinkage rate of the clay. The shrink swell index of clay refers to the extent certain clay minerals will expand when wet and retract when dry.

Shrinkage definition the act or fact of shrinking.