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What is Cast Molding
The cast molding process or cast urethane refers to pouring liquid raw materials into a mold and turning the material into a solid state.
With rich experience, Zhongde experienced engineers can accurately analyze whether the product is suitable for cast molding process according to the product structure.
With rich experience, Zhongde experienced engineers can accurately analyze whether the product is suitable for cast molding process according to the product structure.
Cast Molding Molds Making and Tooling Services
Zhongde molding service makes all the molds in-house. We have been insisting on developing our own molds for many years, meanwhile, introducing fully automated equipment. Our professional engineer will help to improve the mold design. In addition, our custom die mold is lifetime guaranteed.
| Item | Details |
|---|---|
| Rapid Tooling | Mold working lifetime up to 20,000 runs. |
| Production Tooling | Traditional molds are used for mass production. |
| Mold Type22 | Family molds, Single cavity molds and multi-cavity molds. |
| Multi Cavities Moulds | More than one part per cycle. |
| Family Moulds | Produce two or more different sizes and shape parts per cycle. |
| Mold Material | Steel P20, H13, H136, 2316, 2344, 083, 718H, SKD618, etc. |
| Mold Storage | 3 years in inactivity |
| Mold warranty | Lifetime warranty on production molds. |
| Mold Remachining | We can re-machine the molds if there are any changes required, basis on mold structure. |
| Maximum Dimensions | 2500mm*2000mm |
Cast Molding Size Chart
The below table shows the regular size of the custom cast molding parts. If you need a unique size product design, Zhongde a professional China precision on-demand cast urethane manufacturer, will help you achieve it at a competitive price.
| Size | Metric | Inch |
|---|---|---|
| Length | 2500 | 98.4 |
| Width | 2000 | 78.7 |
Cast Molding Materials
Cast molding may have a more limited range of material options compared to injection molding and compression molding. Below list is the of general materials for cast molding. However, our expert team can work with you to modify the material if you have specific project requirements.
- PU | Polyurethane
- LSR | Liquid Silicone Rubber
- MC Nylon
Cast Molding Surface Finishing
Proper surface finishing will improve the molded parts' quality. Zhongde offers a wide range of surface treatment options. These efficient surface finishes improve the part's functions and aesthetic appeal.
Glossy
A-grade finish is smooth and highly reflective, giving the product a shiny appearance. It’s often used for products where aesthetics are important.
Semi-glossy
The B-grade finish is less reflective than glossy but still has a smooth and somewhat shiny appearance.
Matte
C-grade finish is non-reflective and has a dull appearance. It’s often chosen for parts where glare or light reflection is undesirable.
Textured
D-grade finishes are intentionally rough or patterned. They can provide a better grip or a unique appearance to the product.
Our Quality Promise
Zhongde is committed to providing quality products that meet or exceed the needs of our customers through continuous improvement.
Strictly follow the confirmed drawings or samples to produce. If there is any deviation, our company will replenish to our customers to make up for the loss.
Advantages of Cast Molding
The cast molding process (cast urethane) makes high-quality prototype components using two-component polyurethane resins and silicone molds. Compared with other on-demand manufacturing, cast molding has many advantages.
The Advantages include as below:
- Low-volume production
- High accurate production
- A wide variety of finish options
- Rapid turnaround on parts
- Durability for maximum wear and strength
Cast Molding vs. Injection Molding
Cast molding involves pouring molten material into a mold cavity and allowing it to cool and solidify, taking the shape of the mold. It is suitable for producing large, complex parts with intricate details and varying wall thicknesses. Cast molding offers design flexibility but may have longer production times and limited material options.
Injection molding, on the other hand, injects molten material into a mold under high pressure. It allows for high-volume production of parts with precise dimensions and complex geometries. Injection molding offers faster cycle times, a wide range of material choices, and tighter tolerances compared to cast molding. However, it requires upfront tooling costs and is better suited for mass production.
The Urethane Cast Molding Process
Urethane casting is the process of injecting polyurethane and additive resins into a soft mold made of a silicone elastomer. Urethane casting is an easy, straightforward process. Below are the steps in making urethane cast products.
Developing the Master Pattern
Create master patterns using various materials like plastic, and metal by CNC machining or 3D printed prototypes. This master pattern is the exact replica of the final part.
Mold Creation
A two-part mold is made from silicone rubber or another suitable material. The master pattern is placed inside the mold, creating a void that matches the part's shape.
Resin Mixing and Pouring
Choose suitable urethane resin and mix it according to the specification. Then pour mixed materials into the cavity.
Curing and Demolding
Place the mold to solidify in an oven or at room temperature. Once the resin has cured and solidified, opend the mold, and remove the urethane parts carefully.
Trimming and Finishing
Trimming, sanding, or post-processing the cast urethane parts to meet specific tolerances and surface finish requirements.
Cost Effective
Our injection molding tooling start at $500, easy for you to step into a new injection molding project. We always finding better solutions to lower overall custom molding costs, and let our customers have a more competitive advantage in the market
Consistency and High Quality
We take care of mold making and injection molding. That means we take full control from material to production. The experienced experts combined with scientific molding technology, ensure the custom products' quality and consistency.
Proven Success
Zhongde has accumulated thousands of happy clients all over the world. Over the 40 years since established, we’ve helped our customers develop and shipped out millions of custom molding parts.
Complete Range of Service
More than tool making and molding service, Zhongde complete production line include every manufacturing process you need for a new project development solution, such as secondary finishing, custom package, finish product assembly, etc.
Start A New Project Right Now!
Our sales team will contact you within 24 hours. We are glad to answer your questions.
Custom Cast Molding Parts
The cast molding process is suitable for producing low-volume and highly accurate products. Here are some cast product samples we made before.
FAQs of Cast Molding Service
View our FAQ center for more questions.
What is the expected lead time for the casting molds?
The lead time varies depending on factors like mold design, material availability, and production schedule. We aim to provide an estimated timeline based on your project requirements.
Can you provide samples or prototypes before full production?
Yes, we offer sample production or prototyping services to ensure the final product meets your expectations before proceeding with full-scale production.
Can you accommodate design modifications or revisions?
Yes, we can accommodate design modifications within the scope of the project. Our team works closely with you to ensure any necessary changes are implemented effectively.
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