High temperature and high strength Refractory kiln furniture Cordierite sagger
1. Product Description
Sagger is made of refractory mud material of a variety of round bowl, made by high temperature roasting. The sagger is one of the important kilns for the installation of porcelain. All kinds of porcelain billet, must first be loaded into the sagger, and then into the furnace roasting.
high temperature cordierite sagger used for ceramics has high refractoriness, good thermal shock resistance, high load softening temperature, small expansion coefficient, long life and other fine features, widely used in ceramics industry (tunnel kiln brick, roller Kiln, Pusher kiln , a variety of sagger) and other kilns instead of clay and high aluminum brick, with good effect.
The saggars were used for the biscuit and the glost firing They were expected to last for about 40 firings; each potbank made their own in a saggar making workshop. Saggars were made from fireclay, by a saggar maker and two assistants: the framemaker and the bottom knocker. The framemaker beat the clay into a sheet on a metal table using a large mallet, the mow or mawl. Using a frame he would cut it to size, sprinkle it with sawdust and wrap it round a wooden block to make the walls. The framemaker was usually an appretice in his late teens. The bottom knocker, usually a boy in his early teens, did the same on a smaller scale, constructing the round or banjo-shaped bottom. Again the mow was used to beat the air out of the clay and flatten the sheet. The saggar maker was an experienced craftsman who paid his assistants out of his piece-work earnings: he took the bottom and the sides onto a wheel and using his thumbs joined the sides to the bottom.The green saggars were dried and then placed on the top of bungs during the next firing of the kiln.
The unfired ceramic ware was placed in saggars and then biscuit fired, before being glazed and again placed in saggars prior to being glost fired. Ware may then be decorated, and placed on refractory bats and fired again such as in a muffle kiln.
2. Product Parameters
| Item and Descriptions |
Specifications |
| Al2O3 (%) |
40~48 |
| SiO2 (%) |
45~51 |
| MgO (%) |
4~9 |
| MOR(MPa) |
20℃ |
14 |
| 1250℃ |
12 |
| Bulk Density(g/cm3) |
1.95-2.00 |
| Open Porosity(%) |
29.0 max |
| Phase composition(%) |
Mullite |
55 |
| Cordierite |
30 |
| Max. Service temperature ℃ |
1280
|
WE CAN FORMULATE ACCORDING TO YOUR DETAILED USING CONDITION.
3. Features
Sagger can be used to fire many kinds of ceramic, commonly using temperature is under 1280℃.Customer can use it fire ceramic vase and pottery in wood kiln, gas kiln and so on.
4. Package
We use plywood box and pallet, there is no need to do fumigation, it is very strong and eco-friendly material for package.
