Excessive preforming pressure

Excessive cold-press preforming pressure causes microcracks inside 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) Pressure parameter aspect: The pressure exceeds the bearing limit of the powder particles, causing cold welding and local cracking; improper pressure control directly affects the compactness and molding quality of the product. (2) Pressure parameter aspect: Excessive elastic recovery after pressure release may cause internal damage to the material or excessive resin flow, affecting the structural uniformity of the product. (3) Material aspect: Fluctuations in raw material performance indicators or insufficient pretreatment affect molding quality. (4) Process aspect: Deviations in the control of key process parameters cause the '2079851475616104453 to deviate from optimal conditions. (5) Equipment aspect: Equipment accuracy and maintenance status affect the stable execution of process parameters.

(1) Process control: Control the preforming pressure within the pressure resistance range of the particles, establish an online monitoring mechanism, set upper and lower parameter limits and implement alarm management. (2) Parameter adjustment: Adopt a stepped pressurization process to gradually increase the pressure; it needs to be evaluated in combination with equipment capacity, gradually increase the pressure and check the compactness and dimensional changes of the product. (3) Implementation measure: Maintain sufficient holding time., 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.