Molding Process
2 views
Sintered molded products cracking
Problem Phenomenon
Pressureless sintered PEEK parts crack during sintering or after cooling
Cause Analysis
Uneven volume shrinkage during sintering heating (internal-external temperature difference); cooling rate too fast producing thermal stress; uneven density of the preformed green body
Solution
Use slow and uniform heating rate (<3°C/min) and cooling rate; staged holding to homogenize the temperature field; increase pre-pressing pressure to improve green body density uniformity
Key Takeaway
The parameter control of the sintering process determines the success rate of PEEK pressureless molding
Was this helpful?
0 people found this helpful
Thank you for your feedback!