Ten questions and solutions for mold test mode, all classic!

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Frequently Asked Questions in Trial Mode 1: Main Sprue Sticking Mode

The method and sequence of solving the problem:

1 Polish the main sprue → 2 nozzles coincide with the center of the mold → 3 Reduce the mold temperature 4 Shorten the injection time → 5 Increase the cooling time → 6 Check the nozzle heating ring → 7 Polish the mold surface → 8 Check the material for contamination.

Frequently Asked Questions in Test Mode 2: Difficulties in Mold Release

The method and sequence of solving the problem:

1 Decrease the injection pressure → 2 Shorten the injection time → 3 Increase the cooling time → 4 Reduce the mold temperature → 5 Polish the surface of the mold → 6 Increase the stripping slope → 7 Reduce the clearance at the insert

Common Problems in Trial Mode 3: Poor Dimensional Stability

The method and sequence of solving the problem:

1 Change barrel temperature → 2 increase injection time → 3 increase injection pressure → 4 change screw back pressure → 5 increase mold temperature → 6 decrease mold temperature → 7 adjust feed amount → 8 decrease feed rate

Frequently Asked Questions in Test Mode 4: Surface Ripples

The method and sequence of solving the problem:

1Adjust the feed amount→2 increase the mold temperature→3 increase the injection time→4 increase the injection pressure→5 increase the material temperature→6 increase the injection speed→7 increase the size of the runner and gate

Frequently Asked Questions in Test Mode 5: Warpage and Deformation of Plastic Parts

The method and sequence of solving the problem:

1 Decrease mold → 2 Lower material temperature → 3 Increase cooling time → 4 Reduce injection speed → 5 Reduce injection pressure → 6 Increase screw back pressure → 7 Reduce injection time

Frequently Asked Questions in Trial Model 6: Delamination of Plastic Parts

The method and sequence of solving the problem:

1 Check the type and grade of plastics → 2 Check whether the material is contaminated → 3 raise the mold temperature → 4 Dry the material → 5 Increase the material temperature → 6 Decrease the injection speed → 7 Decrease the gate length → 8 Decrease the injection pressure → 9 Change the gate Position→10 Large-hole nozzle

Common Problems in Trial Mode 7: Silver Stripe Squeeze Stick

The method and sequence of solving the problem:

1 Reduce the temperature of the material → 2 Dry the material → 3 Increase the injection pressure → 4 Increase the size of the gate → 5 Check the type and grade of the plastic → 6 Check whether the plastic is contaminated

Frequently Asked Questions in Test Mode 8: Difference in Surface Luster

The method and sequence of solving the problem:

1 Material drying → 2 Check whether the material is contaminated → 3 Increase the material temperature → 4 Increase the injection pressure → 5 Increase the mold temperature → 6 Polish the mold surface → 7 Increase the size of the runner and gate

Frequently Asked Questions 9: Dent

The method and sequence of solving the problem:

1 Adjust the feed amount → 2 increase the injection pressure → 3 increase the injection time → 4 reduce the material speed → 5 reduce the mold temperature → 6 increase the exhaust hole → 7 increase the size of the runner and gate → 8 shorten the length of the runner → 9 Change the position of the gate →10 Decrease the injection pressure →11 Increase the screw back pressure

FAQ 10: Bubbles

The method and sequence of solving the problem:

1 Drying of material → 2 Decrease the temperature of the material → 3 Increase the injection pressure → 4 Increase the injection time → 5 Increase the mold temperature → 6 Reduce the injection speed → 7 Increase the screw back pressure


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