Casting nylon is a high performance polyamide and it is known for its strength, versatility, and adaptability across applications. This
2025-08-19
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What is Urethane Cast Services？
The cast urethane 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.
Cast Molding Molds Making and Tooling Services
Zhongde molding service makes custom urethane 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 |
Urethane Cast Molding Size Chart
The below table shows the regular size of the custom cast molding parts. The final dimensions of urethane cast parts are influenced by the precision of the master model, part geometry, and the chosen casting material. Typically, a shrinkage rate of approximately +0.15% can be expected.
| Size | Metric | Inch |
|---|---|---|
| Length | 2500 | 98.4 |
| Width | 2000 | 78.7 |
Casting Urethane Materials
Cast urethane service 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 | Urethane
- MC Nylon
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.
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, opened 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.
Mold Creation
A two-part mold is made from permanent mold or silicone rubber. The master pattern is placed inside the mold, creating a void that matches the part's shape.
Other Urethane Casting Services
Urethane Casting 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.
Custom Urethane Part
With extensive experience in mold design and manufacturing polyurethane products, our urethane casting service produces high-quality PU parts to any design or specification, ensuring durability and precision.Urethane cast parts can be clear, color-matched, painted, installed inserts, and custom finished.
Advantages of Cast PU Service
The polyurethane manufacturing (cast urethane) makes high-quality PU parts, ensure that our urethane perform optimally in their intended environments.
- Low-volume production
- High accurate production
- A wide variety of finish options
- Rapid turnaround on parts
- Durability for maximum wear and strength
Urethane Color Options
Polyurethane can be mixed with pigments to produce a wide range of colors. In its natural state, urethane typically appears amber to milky white. and also Zhongde carefully formulates materials to meet the specific needs of each application.
- Black
- Natural
- Clear
- Color-Match
Cost Effective
Our urethane tooling start with a very favorable price, 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.
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FAQs of Urethane Casting 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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