Vacuum casting,also known as Urethane Casting or Silicon Mold, is a process carried out in a vacuum environment. It involves defoaming, stirring, preheating, and injection molding of the castable, followed by secondary solidification molding in a constant temperature box. Through this method, the produced plastic parts can achieve similar strength and hardness requirements as ABS and other raw materials.
This process is mainly applied in the development of new products and small batch production scenarios, as it can produce plastic parts with performance similar to that of injection molded products. In addition, silicone replica also allows for color matching to meet diverse production needs according to customer needs
Using materials
ABS、PP、PC、 And soft glue, etc
Technological advantages
Silicone replica is an ideal choice for small batch high-quality plastic handboards. It can not only quickly verify the feasibility of product design, but also help customers achieve the fastest and most economical customization of small batch components when the quantity demand cannot reach the steel mold.
a、 Significantly shortened the product development cycle. By adopting replication technology, product prototypes can be rapidly formed, thereby accelerating the testing and validation process. This not only saves valuable time resources, but also improves research and development efficiency, enabling products to be launched to the market earlier.
b、 Effectively reducing the costs of product development and manufacturing. Compared to traditional manufacturing methods, re molding can reduce the consumption of raw materials and identify and correct potential issues in the early stages of product design, thereby avoiding expensive modification costs in the later stages.
c、 Helps design flexibility. By creating realistic product prototypes, designers can more intuitively evaluate the appearance and performance of the product, and then make necessary adjustments and optimizations to the design. This not only improves the accuracy of the design, but also enhances the market competitiveness of the product.
d、 High degree of restoration and high product accuracy. Can accurately replicate the structure, details, and texture of the prototype, providing high-quality and high-precision injection molded parts.
process flow
Create prototype parts
Based on the provided 3D drawings, prototypes are manufactured using 3D printing technologies such as SLA and DLP, which can preserve complex shapes, structures, and surface precision to the greatest extent possible, greatly reducing the time from design to prototype, enabling designers and engineers to verify the feasibility of the design more quickly, and iteratively improve based on feedback.
Making silicone molds
After manufacturing the prototype, manufacture the mold frame, fix the prototype, pour silicone, wait for drying, remove the prototype to obtain the silicone mold, and the silicone mold manufacturing is completed.
Note: If the mold is large or complex, it may need to be done carefully and slowly. Clean the silicone mold to ensure its surface is clean. If necessary, the edges of the mold can be trimmed or trimmed.
Vacuum casting
According to the needs of the produced product, prepare appropriate pouring materials such as resin, wax, or concrete, and slowly and evenly inject the pouring materials into the silicone mold to ensure that the entire mold is filled. Wait for a certain amount of time to cure or harden according to the material requirements. After the pouring material is completely cured, carefully remove the prepared product from the silicone mold.
Attention: After 30 to 60 minutes of curing in a constant temperature box at 60 ° -70 ° C, the mold can be demolded. If necessary, secondary curing should be carried out for 2-3 hours in a constant temperature box at 70 ° -80 ° C. Under normal circumstances, the service life of silicone molds is 15-20 cycles.
Process application
a、 Plastic prototype: Its raw material is plastic, mainly used as a prototype for some plastic products, such as televisions, monitors, drones, hair dryers, and so on. The most common photosensitive resin used in 3D prototype making belongs to the plastic prototype category.
b、 Silicone replica board: Its raw material is silicone, mainly used as a board to display the design appearance of products, such as cars, mobile phones, toys, handicrafts, daily necessities, etc.
0 comments:
Post a Comment