PEI Plastic Machining Experts
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PEI Machining Capabilities
Welcome to Leland Technologies, your trusted partner for high-performance PEI machining capabilities. Our state-of-the-art CNC machines and experienced team of engineers and technicians enable us to produce high-precision, complex parts with tight tolerances and exceptional surface finishes, using PEI, a high-performance engineering thermoplastic.
PEI characteristic
PEI (Polyetherimide) is a high-strength amorphous polymer often branded as ULTEM.
Characterized by excellent heat and flame resistance with a flammability rating of 94-V-0, ULTEM can perform continuously up to 340°F (171°C). ULTEM is also hydrolysis resistant, as well as highly resistant to most acidic solutions.
ULTEM is commonly used for a variety of structural components requiring high strength and rigidity at elevated temperatures
Additionally, ULTEM has one of the lowest thermal conductivity ratings and the highest dielectric properties of thermoplastic materials, outperforming both Nylon and DELRIN.
PEI has excellent heat and flame resistance and the highest dielectric strength of any thermoplastic.
Advantages of PEI CNC Machining
High Temperature Resistance
PEEK can operate at temperatures up to 250°C (482°F) without losing its mechanical properties.
Chemical Resistance
PEEK is resistant to a wide range of chemicals, making it suitable for use in harsh environments.
Mechanical Strength
It has high tensile strength, stiffness, and impact resistance, which makes it ideal for demanding applications
Dimensional Stability
PEEK maintains its shape and size under mechanical stress and thermal conditions.
Biocompatibility
PEEK is biocompatible, making it suitable for medical implants and other healthcare applications.
Considerations for CNC Machining PEI
Tool Selection
Use high-quality, sharp carbide or diamond-coated tools to achieve precise cuts and extend tool life.
Feed Rate and Speed
Optimizing the feed rate and spindle speed is crucial to avoid overheating and potential material deformation.
Coolant Usage
Proper coolant application can help dissipate heat, prevent material melting, and improve surface finish.
Chip Removal
Effective chip removal is essential to avoid recutting chips, which can affect surface quality and tool life.
Surface Finish
PEEK can achieve a good surface finish with proper machining parameters, but post-machining processes like polishing may be required for critical applications.
Gallery of CNC Machined PEI Parts
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The material is a high-end engineering plastic PEI (ULTEM), also known as polyetherimide. It is an amorphous high-performance polymer. This material has good mechanical properties, excellent…