Orange peel crystallization appears in alkaline polymerization of MC nylon

Irregular large crystalline spots appear on the product surface. This problem is relatively common in casting molding production and requires comprehensive analysis and solution from multiple aspects of material, process, and equipment.

(1) Temperature parameter aspect: Local mold surface temperature is too low, causing excessively fast crystallization, leading to insufficient reaction kinetics or deteriorated material flowability, affecting the normal progress of the '2079851475616104453. (2) Mold aspect: Nucleation sites exist on the mold surface, The mold structure or condition directly affects the flow and molding of the material in the cavity. (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: Keep the mold temperature uniform, Develop a specific operation plan based on actual production conditions, and verify the implementation effect. (2) Formulation adjustment: High-gloss polishing of the mold surface reduces nucleation sites, Adjust gradually and verify the effect, ensuring that other performance indicators of the product are not affected. (3) Process control: Control the cooling rate., Establish an online monitoring mechanism, set upper and lower parameter limits, and implement alarm management. (4) 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.