Injection molding mold material bismuth -tin alloy
author: time:2014-02-21 source:
In the bismuth -tin alloy mold commercial name for Cerro ( bismuth based low fluxing ) . This alloy density, soft texture,
the impact is often brittle , while showing a continuous load and plasticity . Over time, the strength of the alloy increased.
Bismuth -tin alloy is a mixture of several metals ( depending on the contents , change in melting point of 40 to 170 ) has
a lower melting point. These alloys are not suitable for conventional casting process , but also for die casting and vacuum
casting burning , while also using a special spray gun . Such alloys are particularly suitable for the manufacture of the
alloy changes in the volume of the curing mold does not occur . It is easy to cast , and can accurately copy , reproduce and
die surface shape model .
Due to the low mechanical strength bismuth -tin alloy , and therefore mainly used to produce experimental injection
molding mold . These alloys are usually applied hollow mold , hot mold, and also for the manufacture of high-precision
mold electrodeposition . In addition , the core also serves as the rotational molding process , which is coated with a resin
and a reinforced plastic. These core melt removed.
In the mold , the bismuth -tin alloy used in the manufacture of experimental molds , molds for blow molding , thermoforming mold .