Material Analysis
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MS Lost Foam Casting
Problem Phenomenon
MS expandable copolymer lost foam casting, gas evolution and decomposition.
Cause Analysis
MS expandable polystyrene-methyl methacrylate EP (St-MMA) as lost foam casting material; overcomes the problems of EPS not being easy to decompose completely and EPMMA having too large gas evolution; pouring difficulty; casting quality.
Solution
①Lost foam material selection; ②gas evolution control; ③complete decomposition; ④pouring process; ⑤casting quality.; After adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
MS lost foam application is a special field; balance gas evolution and decomposition; process ensures casting quality.; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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