• Skip to main content
  • Skip to secondary menu
  • Skip to primary sidebar

Mechanicaleng blog

siemens nx tutorial & injection molding technology

  • Plastic molding
  • Siemens nx
    • nx modeling
    • nx drafting
    • nx sketching
    • nx assembly
  • Mechanical basic
    • mechanical standard
    • Mechanism video
  • microsoft office
    • microsoft word
    • powerpoint
    • excel tips
  • About me
  • CONTACT ME
Home » Plastic molding » injection molding troubleshooting flash defect

injection molding troubleshooting flash defect

January 12, 2019 by mechanicaleng blog Leave a Comment

Injection molding troubleshooting flash defect usually appears near parting line, gas vent, slide core, or ejector pin. Burr looks like a develop film like a plastic edge.

injection molding troubleshooting flash
injection molding troubleshooting flash

Post contents

  • I. Causes of flash injection molding.
  • II. Plastics injection molding troubleshooting flash defect
    • 1. Injection molding.
    • 2. Injection machine.

I. Causes of flash injection molding.

+ Material effect. For example, GF resin always have flash. It is difficult to improve flash.

+ Mold has gap between the core and cavity, slider core, gas vent is too big.

+ Clamping force is small, in injection molding process. Mold will be had gap under high pressure.

+ Molding materials.

+ Injection condition is not good as pressure, speed, temperature.

+ Injection machine is not good, if this happens core and cavity must be measured first, and re-welding and re-machining.

II. Plastics injection molding troubleshooting flash defect

1. Injection molding.

+ If parting surface, ejector pin system, or slide of mold is damaged, repair the damage and remove its.

+ Check dimension of gas vent, If it is too big or depth, repair it.

+ Clean the mold before start injection molding process.

+ Increase support plate for mold.

2. Injection machine.

+ If clamping force can be increased -> we can increase clamping force.

+ Reduce holding pressure, injection speed, or molding temperature.

 

Related posts:

plastics injection molding sink marksinjection molding troubleshooting sink mark defect injection molding short shot troubleshootinginjection molding short shot troubleshooting plastic injection moldinginjection molding calculate clamping force injection molding processPlastic injection molding process steps

Filed Under: Plastic molding Tagged With: injection molding troubleshooting, molding defect

Reader Interactions

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Primary Sidebar

Recent Posts

  • what is spur gear | introduction
  • Mechanical engineering skills from training process
  • What is Inox | Stainless Steel?
  • How to create thread in nx
  • nx assembly| create a new part from the same part
  • how to calculate sum of squares in Excel
  • How to active GC toolkits in Siemens NX
  • How to create a sphere in nx
  • How to create a cone in nx
  • How to create a cylinder in nx

Copyright © 2023 · Magazine Pro on Genesis Framework · WordPress · Log in