Polyurethane Resin Silicone Urethane Casting Parts Flexible High Precision
Brand Name:JIA SAHN
Certification:ISO9001
Model Number:Customization
Minimum Order Quantity:8
Delivery Time:1-5 weeks
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Polyurethane Resin Silicone Vacuum Casting Parts Flexible plastic
functional parts
Product Description:
Vacuum casting uses silicon moulds to make a high-quality prototype
of plastic and rubber components using two-component polyurethanes
resins.
What is Vacuum casting?
Vacuum casting, sometimes referred to as Urethane casting or
Polyurethane casting uses silicone moulds to make plastic and
rubber components under vacuum. It is an extremely adaptable
manufacturing process capable of mimicking the injection moulding
to produce complex parts in polyurethane resins and cast nylon.
Due to the process being under vacuum, it produces high-quality
bubble-free casting with smooth surface texture without any
blemishes.
Vacuum casting can be extremely useful in rapid prototyping
injection moulding parts and worth considering when selecting rapid
prototyping processes for plastic or rubber parts.
Applications of vacuum casting
Vacuum casting is one of the most cost-effective ways to produce
high quality, low volume plastic parts which can be similar to
injection moulding parts
The parts are especially suitable for form, fit and function tests
during the embodiment design stages, where they can be used for
marketing, field user testing and product design verification
purposes
There are many Urethane casting resins commercially available that
can be used to create parts to satisfy a wide range of design
requirements such as temperature requirements, different surface
textures, hardness, etc.
Materials are also available to create parts that are fully opaque,
translucent or completely transparent
Sometimes high-quality wax masters can be made using vacuum casting
for investment casting to increase the finer details of intricate
features
Typical technical specification
| Time frame | Within 24 hr – 5 working days for up to 30-50 parts |
| Material choice | Wide variety of materials available |
| Accuracy | ±0.3% (with a lower limit of ± 0.3 mm on dimensions smaller than 100 mm) |
| Minimum wall thickness | To ensure that the mould is filled properly, a wall thickness of at least 0.75 mm is necessary. But best results are achieved with a recommended wall thickness of 1.5 mm |
| Maximum part dimensions | The size of the mould is limited by the dimensions of the vacuum chamber |
| Typical quantities | Up to 50 parts per mould |
| Surface structure | Gloss to Matt surface finish can be obtained |
1,Polyurethane sealant has the following characteristics: excellent
abrasion resistance; low-temperature flexibility; performance can
be adjusted to a wider range; mechanical strength; good adhesion;
good elasticity, excellent restorative properties, can be suitable
for dynamic joints; good weather resistance, service life of up to
15 to 20 years; excellent oil resistance; biological aging
resistance; moderate price.
2,Polyurethane sealant also has some disadvantages. Such as: not
long-term heat resistance; light-coloured formulations are
susceptible to ultraviolet light aging; one-component adhesive
storage stability by packaging and external influences, usually
slower curing; high-temperature thermal environment may produce
bubbles and cracks; many occasions need primer. At the same time,
the water resistance of polyurethane sealant is also poor,
especially alkali water resistance is not good.
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Polyurethane Resin Silicone Urethane Casting Parts Flexible High Precision
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