Mold-Masters Master Series - Page 7

®
Table of Contents
Not under documentation control if printed. May be revised without notice. ©05-2014
Electronic version is available at www.moldmasters.com
Hot Runner User Manual Revision 18
vii
Section 16 - Troubleshooting .......................................16-1
Introduction .........................................................................................................................16-1
Moisture Related Issues .....................................................................................................16-1
Pre-Molding Precautions ....................................................................................................16-2
Establishing Root Cause ....................................................................................................16-2
Fault Identication ..............................................................................................................16-2
Defect Types, Causes and Remedies Index ......................................................................16-3
Parts have Dark Specks .....................................................................................................16-4
Parts have Blisters and/or Bubbles ....................................................................................16-5
Parts have Flow Marks .......................................................................................................16-6
Parts have Burn Marks .......................................................................................................16-7
Parts are Delaminating .......................................................................................................16-8
Parts have Dimensional Irregularities .................................................................................16-9
Parts are Discolored ......................................................................................................... 16-10
Parts Contain Flash .......................................................................................................... 16-11
Parts Surface has Jetting .................................................................................................16-12
Parts Surface is Rough.....................................................................................................16-14
Parts are Sticking to Cavity ..............................................................................................16-15
Parts are Sticking to Core.................................................................................................16-16
Parts are Short .................................................................................................................16-17
Parts have Sinks or Voids.................................................................................................16-18
Parts are Streaked............................................................................................................16-20
Parts are Stringing ............................................................................................................16-21
Parts are Warped .............................................................................................................16-22
Parts have Weld Lines ......................................................................................................16-23
Section 17 - Glossary of Terms .....................................17-1
Index .................................................................................18-i