Common Problems and Solutions
Surface Pores/Air Streaks
BMC Solution: Add venting slots; Raise the mold temperature; Extend the holding time
SMC Solution: Add venting slots; Raise the mold temperature; Extend the holding time
Phenolic Resin Solution: Increase venting frequency; Reduce the amount of material added; Uniform mold temperature
Excessive Overflow And Burrs At The Edges
BMC Solution: Control the feeding amount; Check the locking force of the mold
SMC Solution: Control the size of the cut pieces; Mold accuracy correction
Phenolic Resin Solution: Adjust the feeding amount and pressurization speed
The Product Is Brittle And Cracked
BMC Solution: Reduce glass fiber content or improve resin toughness
SMC Solution: Optimize fiber distribution; avoid fiber breakage
Phenolic Resin Solution: Reduce curing speed and use toughening modifiers
Dimensional Instability
BMC Solution: Control the moisture content of the raw materials; maintain stable mold temperature
SMC Solution: Control the moisture content of the raw materials; maintain stable mold temperature
Phenolic Resin Solution: Same as BMC, and control the consistency of the curing time
Difficulty In Demolding
BMC Solution: Use appropriate release agent; mold polishing
SMC Solution: Use appropriate release agent; mold polishing
Phenolic Resin Solution: Increase release agent, chrome plating or nitriding of the mold
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