Skin blistering appears in sintering of ultra-high molecular weight polyethylene

Surface blistering of UHMWPE products after sintering and cooling. This problem is relatively common in sintering molding production and requires comprehensive analysis and solution from multiple aspects of material, process, and equipment.

(1) Temperature parameter aspect: UHMWPE degrades at sintering temperature, producing a small amount of gas that gathers under the surface to form blisters, Temperature deviation directly affects the physicochemical state of the material and the reaction progress. (2) Material aspect: Fluctuations in raw material performance indicators or insufficient pretreatment affect molding quality. (3) Process aspect: Control deviation of key process parameters causes the '2079851475616104453 to deviate from optimal conditions. (4) Equipment aspect: Equipment precision and maintenance status affect the stable execution of process parameters.

(1) Parameter adjustment: Reduce the upper limit of sintering temperature, Note that after lowering the temperature, it is still necessary to ensure the material fully reacts or melts; adjust step by step and observe the effect. (2) Formulation optimization: Add antioxidants, Determine the optimal addition amount through small-batch tests, and verify the effect on the overall performance of the product. (3) Formulation adjustment: Use nitrogen protection during sintering to reduce oxidative degradation., Adjust gradually and verify the effect, ensuring that other performance indicators of the product are not affected. (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.