Product delamination

The sintered product shows flaky separation along the horizontal direction. The interlayer separation phenomenon gradually expands after the product is stressed or acted upon by the environment, seriously affecting structural integrity.

(1) Process factor: Poor bonding between multiple feeding times during preforming; this factor affects the '2079851475616104453 and final quality of the product. (2) Density distribution aspect: There is an obvious density interface in the blank; density differences reflect uneven densification degrees in various parts of the product. (3) Shrinkage control aspect: Uneven sintering shrinkage causes separation at the interface; uneven volume shrinkage causes internal stress and dimensional deviation.

(1) Implementation measure: Use one-time feeding preforming to avoid interfaces generated by multiple feeding, formulate specific operation plans in combination with actual production conditions, and verify the implementation effect. (2) Formulation optimization: Increase the preforming pressure to eliminate density steps, determine the optimal addition amount through small-batch tests, and verify the impact on the comprehensive performance of the product. (3) Implementation measure: Use isostatic pressing molding when necessary., formulate specific operation plans in combination with actual production conditions, and verify the implementation effect. (4) Preventive measure: Establish interlayer bonding strength testing standards, regularly sample and test interlayer shear strength, and monitor the stability of process parameters.

The essence of the interlayer separation problem is insufficient interfacial bonding force, which needs to be systematically improved from three aspects: impregnation quality, interlayer cleanliness, and process parameters.