Material Analysis
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ASA laser marking unclear
Problem Phenomenon
ASA product laser marking has insufficient contrast and blurred characters, dark parts have poor white marking effect, and foaming ablation occurs after adjusting power.
Cause Analysis
ASA's laser absorption characteristics depend on the laser sensitizer in the formula; ordinary grades have naturally limited marking contrast; excessive power ablates the rubber phase and foams; the parameter window is narrow.
Solution
①Select laser marking special grades or add laser additives; ②orthogonal optimization of laser power, speed and frequency parameters; ③marking area avoids high stress and high shear areas; ④marking quality included in first article inspection.
Key Takeaway
ASA laser marking prefers material-level solutions; parameter fine-tuning cannot compensate for insufficient absorption characteristics; foaming ablation is a clear signal of excessive power.; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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