What is the optimal drying temperature range for PEEK material?
PEEK requires a higher drying temperature for optimal performance.
This temperature range ensures effective moisture removal from PEEK.
This temperature might be too high and unnecessary for PEEK drying.
This temperature is too low to effectively dry PEEK.
The optimal drying temperature for PEEK is between 150℃ and 160℃, which ensures proper moisture removal to prevent defects like bubbles and poor surface finish during molding.
Which mold materials are recommended for high-temperature applications involving PEEK?
These materials do not withstand high temperatures well.
These materials are known for their excellent thermal resistance and durability.
These are not suitable for high-temperature applications.
These may not provide the necessary durability at high temperatures.
S136 stainless steel and H13 steel are recommended for molds in high-temperature applications because of their ability to withstand the heat required for PEEK injection molding.
What is the ideal mold surface temperature for PEEK molding?
This range is too low for PEEK molding.
Maintaining this temperature ensures optimal flow and quality of molded parts.
This temperature range might be excessively high for mold surfaces.
This is not sufficient for high-performance thermoplastics like PEEK.
The ideal mold surface temperature for PEEK molding is between 150℃ and 200℃ to ensure the material flows properly without premature solidification or defects.
What type of injection molding machine is recommended for processing PEEK?
These may not handle the high temperatures needed for PEEK.
This type ensures precise control over high-temperature processes.
These are typically used for multi-component parts, not specifically for PEEK.
These machines are generally too limited in capacity for PEEK.
A modern reciprocating screw machine with microprocessor control is ideal for PEEK, as it can handle the required high temperatures and precise control over injection parameters.
What should the barrel temperature be set to in the middle zone for PEEK processing?
This range is too low for effective PEEK processing.
This ensures proper melting and flow of PEEK in the middle zone.
This range might be too high and cause degradation of PEEK.
This is far below the necessary processing temperatures for PEEK.
The middle zone of the barrel should be set between 330℃ and 390℃, allowing the material to melt adequately without degrading before reaching the nozzle.
What is a recommended injection pressure range for PEEK?
This pressure is insufficient for filling molds with PEEK.
This range ensures complete cavity filling without causing damage.
This pressure might be too high, risking damage to parts.
Too low a pressure can lead to incomplete filling or defects.
An injection pressure of 80 MPa to 120 MPa is recommended for ensuring that molten PEEK fills the mold completely, preventing defects while maintaining part integrity.
Why is it crucial to control mold temperature during PEEK molding?
Mold temperature mainly affects structural properties, not color.
Consistent mold temperature ensures proper flow and solidification of PEEK.
Temperature control aims more at product quality than energy savings.
Temperature control primarily affects material properties, not mold longevity directly.
Controlling mold temperature prevents rapid cooling that can cause defects like poor material flow and structural weaknesses, ensuring high-quality PEEK molded parts.
What is the function of holding time in the injection molding process for PEEK?
Holding time primarily affects dimensional stability, not surface finish.
Proper holding time ensures that the material sets correctly without warping.
Holding time does not directly affect color properties in molded parts.
Holding time actually ensures thorough cooling and setting of parts.
Holding time allows the material to cool and solidify under pressure, preventing shrinkage or deformation. It's crucial for achieving dimensional accuracy and stability in final products.