195. What are the characteristics silicone mold technology?
Rapid prototyping method is fast making mold technology called rapid tooling, rapid prototyping technology can not only adapt to a variety of production types, especially single and small quantities of mold, and can adapt to the complexity of the mold manufacturing.
Features: low cost, many materials can be molded with silicone, suitable for wax, resin, plaster and other casting molding, casting wax model is widely used in the production of generic art and production for sample preparation. Production steps:
A, based on solid modeling, the correct choice parting line to ensure the smooth mold release products, in the parting line of the tape and coated with color to show partitions.
B, samples from the mother of four to enclose the plate of the mold box combinations.
C, calculate the required dose of silica the main agent, the main agent and curing agent uniformly mixed at 10:1 ratio, into the vacuum casting machine vacuum deaeration.
D, remove the silicone rubber into the mold box until the sample is completely surrounded by the mother.
E, the silicone rubber into the air again when the band into the vacuum injection in the deaeration.
F, about 24 hours at room temperature silicone rubber can be fully cured, fully cured when the required 35 degrees Celsius for 10 hours. To make use of room temperature hardening, hardening heat shrink silicone rubber will cause.
G, remove the frame to the silicon rubber mold with a scalpel cut open, remove the mother sample.
H, partly for holes in the mold. If you find a small amount of mold defects can be configured with a new silicone rubber patch, and after curing can be.