OEM Rapid Prototyping Silicone Rubber Mold Polyurethane Vacuum Casting

OEM Rapid Prototyping Silicone Rubber Mold Vacuum Casting Polyurethane Castings

Products Description

Crida silicone vacuum cast plastic parts are a process that excels in small batch production and product prototyping.

The process starts with high-precision prototyping, usually completed with the help of 3D printing, CNC machining and other technologies. Then, the prototype is placed in a specific box, liquid silicone is poured in, and after vacuum treatment and curing, a silicone mold with high flexibility and detail replication ability is obtained. For example, to make a complex electronic product shell prototype, the silicone mold can accurately reproduce the key grooves, interface shapes and other details on the shell. Next, the two-component polyurethane (PU) resin is mixed in a scientific proportion, and the bubbles are fully removed by vacuum stirring, and then slowly injected into the silicone mold. With the help of the vacuum environment, the resin can evenly fill the mold cavity, avoid residual bubbles, and ensure the surface quality and dimensional accuracy of the parts. After the resin is cured, the mold is opened to remove the part, and then necessary post-processing, such as trimming the edges and polishing the surface, is performed, and a Crida silicone vacuum cast plastic part is completed.

The plastic parts made by this process have significant advantages. In terms of cost, there is no need to invest in high mold opening costs; in terms of time, the production cycle is short and can respond quickly to production needs; in terms of design changes, it has strong flexibility; in terms of the molding effect of parts, it can achieve the molding of complex shapes and fine details. For this reason, it is widely used in the fields of automotive parts trial production, medical equipment parts manufacturing, and small-batch production of electronic products.

Advantages

Crida silicone vacuum casting plastic parts have significant advantages. In terms of cost and efficiency, this process does not require high metal mold investment, greatly reducing the capital threshold for early research and development and small-batch production, which is particularly suitable for start-ups or product prototyping; at the same time, the production cycle is short, from prototype to finished product in just a few days, which can quickly respond to market demand and shorten the time to market.

In terms of quality and flexibility, the parts produced by the Crida process have high dimensional accuracy and a smooth surface, and can accurately reproduce complex geometric shapes and subtle textures; its silicone mold is highly flexible, which is convenient for rapid adjustment and modification of product design, and can meet diverse customization needs. It is widely used in multiple industries such as automobiles, medical, and electronics, providing efficient solutions for product development and production in different fields.

Technical Parameters

Technical Support & Services

Crida provides comprehensive and professional technical support and services to help customers worry-free when using silicone vacuum casting plastic parts.

In the early technical support stage, Crida's technical team relies on rich experience and expertise to deeply participate in customer projects. Faced with customers' new product ideas, the team can respond quickly and accurately recommend the most suitable polyurethane resin material based on the intended use and performance indicators of the parts, such as strength, heat resistance, corrosion resistance, etc. In the product design stage, advanced CAE simulation analysis software is used to conduct a comprehensive evaluation of the design. By simulating the flow and filling process of the resin in the mold, possible defects such as cavitation and shrinkage are predicted, and optimization suggestions are given in advance to ensure that the design meets the requirements of the silicone vacuum casting process and improves product quality and production efficiency. At the same time, Crida also provides customers with detailed 3D printing or CNC machining prototype production suggestions to help customers quickly and accurately build initial prototypes, laying a solid foundation for subsequent silicone mold production and part casting.

In the project execution and after-sales stage, Crida's service is equally considerate and efficient. During the production process, technicians monitor the entire process and strictly control each process to ensure stable and reliable part quality. Once any abnormality occurs, measures can be taken quickly to solve it and ensure the progress of the project. After the parts are delivered, Crida provides comprehensive after-sales protection. Provide product quality traceability services. If there are quality problems with the product, the production link can be quickly located and solutions can be given. For questions encountered by customers during the use of parts, technicians are on standby at any time to answer customers' questions in a timely manner through telephone, video conferencing or on-site guidance. In addition, Crida also regularly visits customers to collect feedback and continuously optimizes technical services and product quality to meet the growing needs of customers and establish long-term and stable cooperative relationships.

FAQ

• Q: What are Crida silicone vacuum casting parts?
• A: Crida silicone vacuum casting parts are the result of the process of making plastic parts in a vacuum environment using silicone molds. First, use 3D printing or CNC processing to make a prototype, then wrap the prototype with liquid silicone, and make a silicone mold through vacuum treatment and curing. Then, mix and remove the two-component polyurethane (PU) resin and inject it into the mold. After curing, take out the parts to complete the production. The parts can accurately replicate the details of the prototype, with high dimensional accuracy and a smooth surface.

• Q: What is the process of Crida silicone vacuum casting?
• A: 1. Prototype production: Use 3D printing (such as SLA, SLS technology) or CNC processing to make high-precision prototypes to ensure the surface quality of the prototype, which affects the accuracy and quality of subsequent parts. For example, when making a prototype of a mobile phone shell, 3D printing can quickly form complex curved surfaces.

2. Make a silicone mold: Hang the prototype on the parting line of the mold casting frame, extract the excess air in the liquid silicone and pour it in to completely cover the prototype. Put it in the oven for curing. The curing time for molds of different sizes varies from 1 to 4 hours. After curing and drying, cut the mold along the parting line and take out the prototype.

3. Resin pouring: Preheat the resin to a specific temperature before pouring, mix the resin and pigment in proportion, put it into the casting machine bowl, and inject it into the silicone mold under vacuum.

4. Demolding and post-processing: After the resin is cured, remove the parts from the mold, remove the excess gates, and then perform post-processing processes such as trimming, grinding, painting, and electroplating.

• Q: What materials can be used for Crida silicone vacuum casting?
• A: The main material is polyurethane (PU). Through formula adjustment, it can simulate a variety of plastic properties, such as PU resins with material properties such as ABS, PC, PMMA, PP, POM, and rubber. ABS-like resins have both strength and flexibility; PC-like resins have high strength and transparency, meeting the requirements of different products for material properties.

• Q: What is the dimensional accuracy of Crida silicone vacuum casting parts?
• A: Usually the maximum tolerance can reach ±0.05mm. However, the actual accuracy is affected by factors such as the complexity of the part, mold quality, and material properties. For example, parts with simple structures and uniform wall thickness are easier to ensure accuracy; complex parts are more difficult to control due to the difficulty of demolding and uneven resin flow. The tolerance range will be determined according to the actual situation for specific projects.

• Q: What is the production scale suitable for Crida silicone vacuum casting?
• A: It is very suitable for small batch production and product prototyping. On the one hand, there is no need for high mold opening costs, and the cost advantage is obvious compared to large-scale production processes such as injection molding; on the other hand, the production cycle is short, and products can be delivered quickly to meet the time requirements of the product development stage. Generally, one silicone mold can produce about 15-20 parts. If more parts are needed, multiple molds can be made.