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← TechnologyWhich risk increases significantly during shell mold casting with inadequate binder?
A)Mold collapse during metal pouring✓
B)Rapid solidification of the melt
C)Alloy segregation in final casting
D)Increased gas porosity throughout the casting
💡 Explanation
Mold collapse risk increases because insufficient binder reduces mold strength, causing structural failure during metal pouring and mold wall deformation, using pressure distribution instead of evenly spaced support; therefore collapse results, rather than simple expansion, due to shell buckling threshold pressure.
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