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UID:1288-1755676800-1755882000@pd3.4spe.org
SUMMARY:Injection Molding Troubleshooting
DESCRIPTION:Course Description\nInstructor: Brian Young \nFee: $1\,600 \nEducational Goals\nSpecifically designed for the practicing molder\, this workshop focuses on developing new and enhancing existing shop floor troubleshooting skills for solving molded-part defects and improving part quality problems. Each day\, participants will rotate through six to eight microprocessor-controlled machines that have been set up with special\, case-study molds. These molds have been modified over time to produce a specific molded part defect under a given set of less-than-optimal molding conditions. Participants will analyze and attempt to solve real molding problems. \nWho Should Attend\nThis two-and-one-half-day workshop is geared to those who wish to improve their knowledge of thermoplastic injection molding. It is designed to provide the greatest value possible to injection molding practitioners who troubleshoot problem parts to increase molding efficiency and decrease part defects/rejects. Beyond machine operators\, a variety of others can benefit from the workshop\, including process and project engineers\, manufacturing engineers\, and team leaders. \nCourse Outline\n\nSurface Defects\n\nFlow lines and jetting\nSplay (moisture or trapped air)\nHaze\, blush\, and poor gloss\nOrange peel and surface ripples\nGate blush and gate splay\n\n\nBurning and Contamination Problems\n\nBurn marks and black specks\nBurn streaks\nContamination\nDiscoloration or poor color match\n\n\nPhysical Problems\n\nFlash and short shots\nSink marks\nVacuum voids and bubbles\nBlisters and delamination\n\n\nGeometry Maintenance Problems\n\nUnder- or over-sized dimensions\nPoor dimensional repeatability (poor Cpk)\nWarpage and bowing\n\n\nStructural Defects\n\nCracking\, crazing\, and brittleness\nWeld lines\nStuck parts and pin push marks\nLong gates and plugged gates\nDrag marks and mold damage\n\n\nTroubleshooting Procedures and Logic\n\nHow to effectively approach\, analyze\, and implement troubleshooting procedures.\n\n\nExploring Root Causes\n\nExplore the root causes of the various defects from the perspective of the plastic material as it fills\, compresses\, and cools within the cavity.\n\n\nPart Defectives and Potential Solutions\n\nSome attention will be given to potential design-related problems\, but the emphasis will be on how to optimize the part quality with process-related solutions.\n\n\nTroubleshooting Guides (The Good\, The Bad\, The Efficient)\n\nA comparison of the different troubleshooting guide formats\, including which tend to be most effective for solving molded part problems.\n\n\nInterpreting Velocity and Pressure Shot Traces\n\nThe graphical outputs of the injection pressure and injection velocity traces provide a window into the mold that was not previously available on older machines. Proper interpretation of these shot traces can simplify and speed up the troubleshooting process.\n\n\nApplying Designed Experiments for Advanced Troubleshooting\n\nInsight into how and when to implement designed experiments (DOEs) for difficult-to-solve defects or quality problems with poor repeatability.\n\n\nEvaluating Attendees’ Molded Part Samples\n\nDefective part samples brought in by the participants will be discussed in a group format. An understanding by the participants of the processing conditions or a current process set-up sheet will greatly facilitate this discussion.
URL:https://pd3.4spe.org/event/injection-molding-troubleshooting/
CATEGORIES:Workshop
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