Air Entrapment During Casting Forming Internal Voids

Irregular voids are found inside after cutting the product open. This defect is usually discovered after the product is demolded or during cross-section inspection, and is mostly concentrated in thick-walled areas or at the end of resin flow. Internal defects reduce the mechanical strength and density of the product, and have a particularly severe impact on products with pressure-bearing and sealing requirements.

(1) In terms of the mold: the casting liquid forms jets or waterfalls when flowing into the mold, entraining air, the mold structure or condition directly affects the flow and molding of the material in the cavity. (2) In terms of the mold: poor cavity venting prevents air from being discharged, the mold structure or condition directly affects the flow and molding of the material in the cavity. (3) In terms of materials: fluctuations in raw material performance indicators or insufficient pretreatment affect molding quality. (4) In terms of the process: control deviations of key process parameters cause the '2079851475616104453 to deviate from optimal conditions. (5) In terms of equipment: equipment precision and maintenance status affect the stable execution of process parameters.

(1) Implementation measures: use a pouring bucket with a bottom outlet to inject from the bottom of the mold, formulate a specific operation plan based on actual production conditions and verify the implementation effect. (2) Implementation measures: reasonably set vent grooves and overflow grooves, formulate a specific operation plan based on actual production conditions and verify the implementation effect. (3) Process strengthening: vacuum the mold before casting., increase the vacuum degree and ensure sufficient treatment time, and proceed to the next process only after confirming that bubbles are completely eliminated. (4) Preventive measures: establish a complete 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.