Poor Interfacial Bonding Between Embedded Metal Inserts and Resin

Gaps or looseness occur at the interface between the insert and the casting body. This problem is relatively common in casting molding production and requires comprehensive analysis and solution from multiple aspects of materials, processes, and equipment.

(1) Process factors: the insert surface is not treated (oil stains/oxide layer), this factor affects the product's '2079851475616104453 and final quality. (2) In terms of shrinkage control: large thermal shrinkage difference between the resin and the insert, uneven volume shrinkage leads to internal stress and dimensional deviation. (3) Process factors: the insert has not been surface-roughened or primer-coated, this factor affects the product's '2079851475616104453 and final quality.

(1) Formula optimization: sandblast or chemically treat the insert surface to increase roughness, determine the optimal addition amount through small-batch tests and verify its impact on the comprehensive performance of the product. (2) Implementation measures: apply a coupling agent or primer, formulate a specific operation plan based on actual production conditions and verify the implementation effect. (3) Material selection: select insert materials with a linear expansion coefficient close to that of the resin., establish material selection evaluation standards and determine the optimal plan through comparative tests. (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.