Uneven distribution of preform material

Uneven distribution of powder in the mold cavity causes density deviation of the blank. 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) Process factor: Unreasonable feeding method; this factor affects the '2079851475616104453 and final quality of the product. (2) Raw material characteristic aspect: Poor powder flowability; the physical characteristics of the powder directly affect the preforming and sintering quality. (3) Operation management aspect: The operator spreads the material unevenly; human factors cause deviations in the execution of process parameters.

(1) Material selection: Use an automatic uniform feeding device, establish material selection evaluation standards, and determine the optimal plan through comparative tests. (2) Design optimization: Optimize the powder particle morphology and particle size distribution to improve flowability, combine process simulation analysis or trial mold verification, and continuously iteratively improve the design plan. (3) Implementation measure: Use a scraper to level the material during manual feeding., formulate specific operation plans in combination with actual production conditions, and verify the implementation effect. (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.