Urethane Casting Service

Urethane casting Services is efficient and results in a fast production time.

  • Rapid small-volume polyurethane molding
  • Versatile urethane manufacturing capabilities
  • Permanent molds produce polyurethane parts consistently
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Get a Quote

Get a quote for tooling and the first batch production.

DFM

DFM report will be provided for production confirmation if needed.

Tool Making

You get a sample per part for your approval.

Sample Test

Your parts go into production after samples are approved.

Production & QC

We use the sample to verify future orders and provide QC checks.

Delivery

What is Urethane Cast Service？

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.
what is cast molding

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

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 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 | Urethane
  • MC Nylon
cast molding materials

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.
cast molding process step1

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.
cast molding process step3

Resin Mixing and Pouring

Choose suitable urethane resin and mix it according to the specification. Then pour mixed materials into the cavity.
cast molding process step4

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.

cast molding process step5

Trimming and Finishing

Trimming, sanding, or post-processing the cast urethane parts to meet specific tolerances and surface finish requirements.
cast molding process step2

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

Centrifugal Molding

The mold is rotated in a horizontal plane while the polyurethane is poured in. The spinning action forces the polyurethane to move to the circumference of the mold, while the air is displaced towards the mold center. This method is used to mold products with complex details that would otherwise trap air bubbles.

Pressure Molding

Both methods use force to clamp together two halves of a mold. The applied pressure forces the polyurethane into all cavities of the mold. This produces products with complex shapes, without the need for secondary machining operations.

Compression Molding

Both methods use force to clamp together two halves of a mold. The applied pressure forces the polyurethane into all cavities of the mold. This produces products with complex shapes, without the need for secondary machining operations.

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.

surface finish Glossy

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.
surface finish Semi-glossy

Semi-glossy

The B-grade finish is less reflective than glossy but still has a smooth and somewhat shiny appearance.
surface finish Matte

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.
surface finish Textured

Textured

D-grade finishes are intentionally rough or patterned. They can provide a better grip or a unique appearance to the product.

Custom Cast PU Parts

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.

PU Custom Parts
PU Custom Parts
Custom TPE Feet
Custom TPE Feet
Custom TPE Parts
Custom TPE Parts
rubber bonding plastic roller
Rubber Bonding Plastic Roller
Custom TPE Sealing Ring
Custom TPE Sealing Ring
Custom TPU Bushing
Custom TPU Bushing
Contact Us for Your PU Parts

Advantages of Cast Urethane

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
cast molding
difference between cast molding and injection molding

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

Zhongde-Your Custom Urethane Manufacturer

With a skilled team and state-of-the-art facilities, we ensure precise and reliable production. Whether you need rapid prototyping or high-volume on-demand manufacturing, Zhongde is your trusted partner for custom cast molding solutions.
cost effective

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

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

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

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.
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.
Yes, we offer sample production or prototyping services to ensure the final product meets your expectations before proceeding with full-scale production.
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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Email Us: sales@zdcpu.com

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