Uneven distribution of filler in PTFE sintering

The filler (glass fiber, graphite, etc.) in filled PTFE products segregates. This problem is relatively common in sintering molding production and needs to be comprehensively analyzed and solved from multiple aspects of material, process, and equipment.

(1) Density distribution aspect: The density and particle size differences between the filler and the PTFE powder are large; density differences reflect uneven densification degrees in various parts of the product. (2) Process factor: Gravity or vibration segregation occurs during preforming feeding; this factor affects the '2079851475616104453 and final quality of the product. (3) Material aspect: Fluctuations in raw material performance indicators or insufficient pretreatment affect molding quality. (4) Process aspect: Deviations in the control of key process parameters cause the '2079851475616104453 to deviate from optimal conditions. (5) Equipment aspect: Equipment accuracy and maintenance status affect the stable execution of process parameters.

(1) Material selection: Use mixed and granulated blended powder to eliminate segregation, establish material selection evaluation standards, and determine the optimal plan through comparative tests. (2) Implementation measure: Avoid vibration during feeding, formulate specific operation plans in combination with actual production conditions, and verify the implementation effect. (3) Design optimization: Improve the powder mixing process to ensure uniform mixing., combine process simulation analysis or trial mold verification, and continuously iteratively improve the design plan. (4) Preventive measure: Establish a sound process control standard and quality inspection system, and regularly review process data for continuous optimization.

This problem needs to be comprehensively analyzed from multiple dimensions of material, process, equipment, and operation, and solved by systematically optimizing process parameters and the quality control system.