Incomplete sintering/under-sintering (core not sintered)

The product core does not reach sintering temperature and remains in an unfused powder state. This problem is relatively common in sintering molding production and requires comprehensive analysis and solution from multiple aspects of materials, processes, and equipment.

(1) Temperature parameter aspect: sintering temperature too low to fully fuse material particles, leading to insufficient reaction kinetics or deterioration of material fluidity, affecting the normal progress of the '2079851475616104453. (2) Process time aspect: holding time too short, heat not transferred to the core; improper time control causes the reaction or cooling process to fail to meet process requirements, affecting the final performance of the product. (3) Process speed aspect: heating speed too slow, core not reaching temperature; speed parameters affect the synchronization of material flow state and reaction progress.

(1) Parameter adjustment: increase sintering temperature to near the material melting point (PTFE about 370-380°C); it is recommended that each adjustment range be 5-10°C, while monitoring product quality changes to avoid new defects caused by excessive temperature. (2) Process optimization: extend holding time according to product thickness (usually 1h/cm thickness); determine a reasonable time based on product wall thickness and material characteristics, balancing production efficiency and quality. (3) Material selection: use multi-point temperature measurement to confirm core temperature., establish material selection evaluation standards and determine the optimal solution through comparative tests. (4) Preventive measures: establish a sound process control standard and quality inspection system, and regularly review process data for continuous optimization.

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