Machining Process of Silicone Prototype Casting
Time:2015-10-14 15:14 source:
Leecheer Author: Leecheer Click:
Machining Process of Silicone Prototype Casting
The silicone of silicone prototype is a kind of flowing liquid. No matter
what kind of color, their quality is the same. A group is flowing liquid
and B group is hardener.Firstly mould die should be finished.Colloid
added into 2-3% hardener makes mould die. The mould possesses the
features of non-defrmation,shrink-resistance and high temperature resistance,
so it can be repeatedly used. The shrinking percentage of product can
reach 0.2%, which is mainly used into prototype and small batch production.
The fabrication technique of silicone prototype
The methods of open mold are packet modulo, brush casting (collapsible
mould,the three-dimensional model), perfusion modulus,which is decided by
the size of product.
1. Packet modulo : dirt with 3~5mm is covered on die to be cottle. And then
silicone and hardener will be put into cottle to solidify prototype.
2. Brush casting:according to the requirement of mould, it generally brush
three layers. The first layer vacuumize and brush on mould. The second
layer should paste gauze. The third layer solidify prototype.
3. Perfusion modulus: silicone and hardener should put into mould and
solidify prototype with vacuum-pumping.
The characteristic of silicone prototype
1. Low viscosity,good mobility and easy operation.
2. Small shrinkage rate,non-defrmation.
High temperature resistance
Keywords: Machining Process ; Silicone Prototype; Casting;CNC
