Processing Machinery
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SMMA Processing Temperature Too Low
Problem Phenomenon
SMMA products have insufficient filling, flow marks and poor surface quality, with barrel temperature below 190℃.
Cause Analysis
SMMA barrel temperature recommended 190-230℃; too low temperature makes melt viscosity high and flowability insufficient; difficult filling and surface flow marks; especially obvious for thick-wall parts.
Solution
①Set barrel temperature 190-230℃; ②take the upper limit for thick-wall parts; ③actually measure melt temperature; ④coordinate with injection speed.; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
The SMMA temperature lower limit of 190℃ is the flowability guarantee; thick-wall parts need higher temperature; actual measurement verification prevents display errors.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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