Vibratory compaction:
In a rigid die pressure and vibration applied at one time to
a mass of powder. Finding level of densification it is used lower pressure when
we compare it with ordinary die compaction. There have a disadvantage of
vibratory compaction such as equipment design of practical apply in tooling and
presses.
Continuous compaction:
Continuous compaction mainly used in simple shape some
examples are plate, sheet, tube and rod. Most of the commercially techniques
entangle following loss powder between set of vertically oriented rolls. The
roll small distance is set up a compact of desired properties. When we compare
it with operation of conventional rolling powder rolling speed is less.
Slip casting:
Slip casting have some limitations for it’s extent metals
and broadly used in ceramics. Slip casting process slip firstly prepared which
is free from liquid vehicles and additives to prevent particles setting. Then the
slip is placed in mold made of a fluid absorbing material such as plaster of
paris to from the slip casting. After
removed from the mold slip casting is adhesive and sintered. Attractive of materials this
technique is used. Materials are relatively incompressible by conventional die
compaction. But this process does not lend itself to high production rate
because it takes a long duration for removed liquid porosity of the mold.
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