Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

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Q

PC Trapped Air Burning

A

For PC burning, first clear the venting; high-temperature materials fear trapped air more; 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 similar prob...

Molds & Tooling burnttrapped airventingfinal speed

Q

PC flame retardant grade processing

A

Flame retardant PC is a superposition-sensitive system of formulation and process; strictly observing the temperature upper limit, strengthening drying, and frequent mold cleaning are the three elements of stable production；After confirming effectiveness, solidify the parameters and practices int...

Molds & Tooling PC；flame retardant；precipitation；silver streak；mold corrosion

Q

PC assembly stress control

A

Assembly stress is a typical cause of delayed cracking; assembly loads must be included in the stress budget of PC parts at the design stage；After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling PC；assembly stress；screw boss；torque；interference

Q

PC amorphous management logic

A

PC amorphous material, mold temperature manages surface 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 for troubleshooting similar problems in the future

Molds & Tooling amorphousshrinkagemold temperaturemanagement

Q

PC hot runner temperature

A

PC hot runner 290-310℃, preheating and temperature control both emphasized；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 similar problems in the future

Molds & Tooling hot runnertemperature controlpreheatinggate

Q

PC cooling time setting

A

PC cooling calculated by wall thickness, demolding rigidity has the final say；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 similar problems in the fu...

Molds & Tooling cooling timedemoldingcyclewall thickness

Q

PC glass fiber grade temperature

A

PC glass fiber material temperature upper limit and rotation speed reduced, equipment wear-resistant；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 sim...

Molds & Tooling glass fibermelt temperaturerotation speedwear-resistant

Q

PC mold temperature 80-120

A

PC mold temperature 80-120℃, stress parts take the upper limit to prevent cracking；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 similar problems in t...

Molds & Tooling mold temperatureinternal stresscrackingcycle

Q

PC barrel cleaning and material changeover

A

PC changeover requires thorough cleaning, dead corners of high-temperature material must be cleaned；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 simi...

Molds & Tooling barrel cleaningmaterial changeoverHDPEdead corner

Q

PC mold temperature 80-120℃

A

Mold temperature is the first variable of PC stress control; orthogonal tests confirm that mold temperature has the greatest influence on stress cracking, and 100-120℃ is the recommended range；After confirming effectiveness, solidify the parameters and practices into the work instruction to preve...

Molds & Tooling PC；mold temperature；80-120℃；internal stress；mold temperature controller

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