Page 156 - Module DMV20173

8.0 POWDER PROCESSING

(a) (b)

(d) (c)
Figure 8.5 Sequence of operations in slip-casting (a)(b)(c)(d).

II) EXTRUSION

1. The processing of ceramic also same as the processing of powders where
it can be compacted using extrusion technique.

III) JIGGERING

1. A combination of processes is used to make ceramic plates.
2. In this process, clay slugs first are extruded and formed into a bat over a
plaster mould.
3. They then are jiggered on a rotating mould.

4. Jiggering is a motion in which the clay bat is formed by means of templates
or rollers. The part then is dried and fired.
5. The jiggering process is confined to axisymmetric parts and has limited
dimensional accuracy.
6. The operation is automated for improved productivity.Extrusion

7. Fig 8.6 (a) shows Extruding and (b) jiggering operations.

BPLK 188 DMV 20173