Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

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Q

POM oil temperature unit configuration

A

An oil temperature unit is standard configuration for high mold temperature conditions; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in ...

Molds & Tooling POMoil temperature unitmold temperatureprecision part

Q

POM mold temperature uniformity

A

Mold temperature uniformity of precision parts is the foundation of dimensional accuracy; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems i...

Molds & Tooling POMmold temperature uniformitygearaccuracy

Q

POM mold temperature 80-100

A

POM dimensional stability relies on sufficient crystallization at high mold temperature; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in...

Molds & Tooling POMmold temperaturecrystallizationdimension

Q

POM hot runner control

A

POM hot runners must prevent dead corners and local overheating; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future

Molds & Tooling POMhot runneryellow spotdead corner

Q

POM melt upper limit 210

A

210°C is the red line for POM melt, and the cost of exceeding the temperature far outweighs the benefit; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting sim...

Molds & Tooling POMmelt temperature210°Cformaldehyde

Q

POM nozzle drooling

A

POM drooling control starts from three lines: temperature, back pressure, and timing; a valve-gate hot runner is the radical solution for high-end parts; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling POM；nozzle；drooling；valve gate；hot runner

Q

POM mold temperature 80-100°C

A

Mold temperature is the first variable for POM surface quality; the 80-100°C baseline plus on-demand increases compensates for the shortcoming of fast cooling with mold temperature; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling POM；mold temperature；80-100°C；ripples；fast cooling

Q

POM copper-catalyzed degradation

A

Copper catalysis is an invisible forbidden zone in POM equipment material selection; material investigation should be included in the acceptance standards for molds and hot runners; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling POM；copper catalysis；degradation；nozzle material；corrosion

Q

Short shot caused by early POM gate freezing

A

The gate freezing time determines the effective feeding window; POM should adopt a larger gate design, combined with mold temperature management for holding pressure efficiency.；After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling POM；gate；freezing；holding pressure；feeding；short shot

Q

POM product deformation out of tolerance after aging

A

POM dimensional judgment must allow sufficient aging time; for temperature-rise conditions, hot-state dimensions should also be evaluated to avoid disputes over post-shipment shrinkage out of tolerance.；After confirming effectiveness, fix the parameters and practices into the work instruction to ...

Molds & Tooling POM；post-shrinkage；aging；dimension；thermal aging；inspection

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