Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

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Q

PA12 Surface Glosslessness

A

Loss of gloss is insufficient cavity replication, with density, speed, temperature, and venting as a four-in-one; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troub...

Molds & Tooling surface glossreplicationdensityventing

Q

PA12 Demolding Difficulty and Ejection Breakage

A

For demolding problems, first check taper and polishing; equalize ejection to prevent local breakage; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting s...

Molds & Tooling demolding difficultyejection breakagedemolding taperejector pins

Q

PA12 Burnt and Trapped Air

A

For burnt parts, first unblock venting, then lower temperature and speed; a too-small gate is also an accomplice; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troub...

Molds & Tooling burnttrapped airventinggate

Q

PA12 Shrinkage Depression and Wall Thickness Upper Limit

A

For thick-wall depressions, first reduce material; the 7-10mm wall thickness upper limit is a design red line; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubles...

Molding Process shrinkage depressionwall thickness upper limitmaterial reductioncompensation

Q

PA12 Warpage Deformation Control

A

For warpage, first check cooling and wall thickness uniformity, then reduce pressure and speed to reduce internal stress; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference f...

Injection Molding warpageuneven coolingwall thicknessover-filling

Q

PA12 Weld Line Position and Strength

A

Weld lines rely on raising temperature to promote welding plus relocating to avoid them, with the cold slug well assisting in discharging cold material; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the ...

Molds & Tooling weld linesgate positioncold slug wellstrength

Q

PA12 Discoloration and Thermal Degradation

A

Discoloration is a thermal degradation alarm; lower temperature, lower speed, enlarge the gate, and vent trapped air together; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a refere...

Injection Molding discolorationthermal degradationshearventing

Q

PA12 Silver Streak Multi-cause Troubleshooting

A

The four causes of silver streaks are drying, temperature, speed, and impurities; when drying is ineffective, check further down; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a ref...

Material Drying silver streaksdryingmelt temperatureimpurities

Q

PA12 Insufficient Filling Systematic Troubleshooting

A

Troubleshoot short shots in the order of six elements, and check ring wear is the most easily overlooked; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooti...

Injection Molding insufficient fillingshort shottroubleshooting ordercheck ring

Q

PA12 Shrinkage Range and Mold Compensation

A

The wide 0.5-2% shrinkage range requires measured compensation, and empirical values are unreliable; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting si...

Molds & Tooling shrinkagemold compensationwall thicknessdimensions

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