How SG PROTO Build a High-Precision Injection Mold

Building a high-precision injection mold is a complex process that requires advanced technology, skilled craftsmanship, and strict quality control. At SG PROTO, we take every step seriously to ensure each mold delivers accuracy, durability, and efficiency for mass production.

1. Design and Engineering

The process begins with a detailed 3D mold design based on the customer’s part drawings. Our engineering team uses professional CAD/CAM software to analyze product structure, wall thickness, and draft angles, ensuring the mold design is optimized for easy molding and long tool life.

2. Material Selection and Machining

We choose high-quality steel materials such as P20, H13, or S136 depending on the project requirements. Precision machining is then carried out through CNC milling, EDM, and wire cutting to achieve tight tolerances and perfect surface finish. Each component is checked carefully before assembly.

3. Assembly and Fitting of Injection Mold

Experienced technicians assemble mold cores, cavities, and components with great attention to detail. Proper alignment and polishing ensure smooth mold operation and high-quality part surfaces during injection molding.

4. Testing and Validation

Before delivery, every mold goes through strict mold trials. We test for injection parameters, cooling performance, and dimensional accuracy to guarantee stable production and consistent quality.

Conclusion

From design to testing, every stage of our injection mold manufacturing process is driven by precision and professionalism. Whether for automotive parts, consumer products, or industrial components, SG PROTO delivers reliable mold solutions that help customers bring their ideas to life faster and more efficiently. Contact us today to customize a solution for your injection molding project.