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Q

PC injection pressure 100-150MPa

A

PC's high viscosity determines high pressure demand; pressure just sufficient is enough, excessive pressure brings stress and flash, requiring fine grading according to structure；After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Injection Molding PC；injection pressure；100-150MPa；holding pressure；multi-stage injection

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

Q

PC barrel zone temperature setting

A

PC requires a progressive temperature gradient to achieve uniform plasticization; nozzle temperature and cold slug well are key details to prevent cold material defects；After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling PC；barrel temperature；zone control；nozzle；cold slug well

Q

PC melt temperature window 280-320℃

A

The PC melt temperature window is narrow and high; 280-320℃ is the core range balancing fluidity and degradation prevention, and measured calibration cannot be omitted；After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Material Analysis PC；melt temperature；280-320℃；degradation；yellowing

Q

PC moisture regain after drying

A

Qualified drying is only the starting point; preventing moisture regain is as important as drying; heat-preservation hopper plus time-limited use is the standard configuration for preventing moisture regain；After confirming effectiveness, solidify the parameters and practices into the work instru...

Material Drying PC；moisture regain；heat-preservation hopper；residence time；high-humidity environment

Q

PC regrind moisture content out of control

A

Regrind management is the weak link of the PC drying system; controlling ratio, re-drying, and preventing contamination together can stabilize quality；After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Material Drying PC；regrind；sprue and runner material；moisture absorption；drying；20%

Q

PC drying temperature upper limit 120℃

A

PC drying requires both sufficient temperature to dehydrate and no overheating oxidation; 110-120℃ is the standard window balancing efficiency and safety；After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Material Drying PC；drying temperature；120℃；yellowing；dehumidifying drying

Q

PC insufficient drying hidden brittle fracture

A

Insufficient PC drying causes hidden brittle fracture; normal appearance does not mean qualification；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...

Material Drying hidden brittle fracturedryingimpactmolecular weight

Q

PC drying 0.02% red line

A

PC is a typical hydrolysis-sensitive material, and 0.02% moisture content is the industry-recognized red line; sufficient drying is the only fundamental means to avoid silver streaks and brittle fracture；After confirming effectiveness, solidify the parameters and practices into the work instructi...

Material Drying PC；drying；0.02%；silver streak；hydrolysis；dehumidifying drying

Q

PCL cost control

A

PCL cost is an obstacle to application promotion; value-oriented decision; comprehensive assessment balance.；After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Processing Machinery PCL；cost；cost reduction；value；alternative；scale

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الفئات

جميع المواضيع 11636 Material Drying 1439 Injection Molding 1506 Molding Process 740 Molds & Tooling 1506 Processing Machinery 2025 Extrusion & Post 2239 Blow Molding 315 Thermoforming 141 Material Analysis 1343 Production & Quality 382