Spontaneous rupture of PTFE during sintering

Sintered PTFE products suddenly rupture internally without external force. This problem is relatively common in sintering molding production and requires comprehensive analysis and solution from multiple aspects of material, process, and equipment.

(1) Process factor: Near the melting point of PTFE (327°C), the volume change rate of crystal phase transition reaches 25%, This factor affects the '2079851475616104453 and final quality of the product. (2) Stress distribution aspect: Excessively fast transition and stress concentration lead to spontaneous rupture, Internal stress concentration causes the product to crack or deform during subsequent use. (3) Material aspect: Fluctuations in raw material performance indicators or insufficient pretreatment affect molding quality. (4) Process aspect: Control deviation of key process parameters causes the '2079851475616104453 to deviate from optimal conditions. (5) Equipment aspect: Equipment precision and maintenance status affect the stable execution of process parameters.

(1) Implementation measure: Set a sufficiently long holding platform in the 310-330°C range (at least 2-4h/cm thickness), Develop a specific operation plan based on actual production conditions, and verify the implementation effect. (2) Implementation measure: Make the crystal phase transition slow and uniform., Develop a specific operation plan based on actual production conditions, and verify the implementation effect. (3) Process optimization: Determine the optimal process parameter window through systematic tests and establish standardized operating procedures. (4) Quality control: Strengthen process monitoring and product inspection, Establish a defect early-warning and traceability mechanism. (5) Preventive measure: Establish sound process control standards and a quality inspection system, and regularly review process data for continuous optimization.

This problem requires comprehensive analysis from multiple dimensions of material, process, equipment, and operation, and should be solved by systematically optimizing process parameters and the quality control system.