Abrasive particle migration appears in ceramic-filled PTFE sintering

Filler particles move/redistribute with melt flow during sintering. This problem is relatively common in sintering molding production and requires comprehensive analysis and solution from multiple aspects of material, process, and equipment.

(1) Temperature parameter aspect: PTFE melt has slight flowability at sintering temperature, Temperature deviation directly affects the physicochemical state of the material and the reaction progress. (2) Density distribution aspect: The density difference between the filler and PTFE and interfacial interactions cause particle movement, Density differences reflect uneven densification among various parts of the product. (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) Material selection: Use treated fillers that have good interfacial bonding with PTFE, Establish material selection evaluation criteria, and determine the optimal solution through comparative tests. (2) Parameter adjustment: Reduce the sintering temperature to near the melting point to reduce melt flow., Note that after lowering the temperature, it is still necessary to ensure the material fully reacts or melts; adjust step by step and observe the 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.