What is the recommended drying temperature range for PEEK materials before molding?
Proper drying prevents moisture-related defects.
This temperature is too low for effective drying.
This range might degrade the material.
This temperature exceeds necessary drying conditions.
PEEK materials should be dried at 150°C to 160°C. This temperature ensures moisture is effectively removed, preventing defects such as hydrolysis, which can degrade mechanical properties and surface quality.
Why is mold material selection important in PEEK processing?
Color is not significantly affected by mold material.
Mold material must withstand PEEK's high processing temperatures.
Speed is more related to machinery settings.
Noise reduction is unrelated to mold material choice.
Selecting the right mold material, such as S136 stainless steel or H13, ensures resistance to high temperatures and durability against PEEK's abrasiveness, crucial for maintaining product quality and prolonging mold life.
What is the recommended mold temperature for PEEK injection molding?
This temperature range ensures optimal flow and quality.
Too low for effective PEEK processing.
Excessively high, risking thermal expansion issues.
Inadequate for PEEK's needs.
Mold temperatures between 150°C and 200°C ensure that PEEK parts are properly molded without rapid cooling or excessive thermal expansion, maintaining surface quality and dimensional stability.
Which barrel temperature range is recommended for the front of the injection molding machine when processing PEEK?
This range supports optimal melt flow without degradation.
This range may lead to incomplete melting.
Too low for effective PEEK processing.
Exceeds necessary conditions, risking degradation.
The front barrel temperature should be set between 340°C and 400°C. This ensures the PEEK is sufficiently melted and flows properly into the mold, avoiding premature cooling and defects.
What is a typical injection pressure range for PEEK molding?
Sufficient pressure ensures full mold filling.
Too low, risking incomplete mold filling.
Excessive pressure might cause demolding issues.
Still inadequate for PEEK's needs.
Injection pressures between 80 and 120 MPa are ideal for ensuring that molten PEEK fully fills the mold cavity while preventing surface abrasions or demolding difficulties due to excessive pressure.
Why is controlling the injection speed important in PEEK molding?
Balanced speed prevents bubbles or fusion marks.
Speed affects quality more than production time.
Noise is not significantly affected by injection speed.
Color consistency is more material-dependent.
Controlling the injection speed at a low to medium rate ensures smooth flow of the material, minimizing defects such as bubbles or fusion marks, which can occur with inappropriate speed settings.
What impact does improper drying have on PEEK molded parts?
Moisture leads to visible surface issues.
Improper drying degrades mechanical integrity.
Efficiency is compromised by defects from moisture.
Thermal stability is reduced by moisture presence.
Improper drying of PEEK results in surface defects such as bubbles and flow marks due to residual moisture, which compromises the mechanical properties and overall quality of the molded parts.
What is a common characteristic of PEEK composites that affects mold material choice?
Abrasion impacts mold wear and selection.
PEEK is not typically conductive.
PEEK is known for its high thermal resistance.
Shrinkage is a general molding concern but not specific to mold material choice.
PEEK composites often contain abrasive fillers like glass or carbon fibers, which necessitate selecting durable mold materials such as S136 stainless steel or H13 to withstand wear and maintain precision over production cycles.