Injection Molding Advanced Troubleshooting Guide : The 4M Approach / / Randy Kerkstra, Steve Brammer

• Autore: Kerkstra Randy
• Pubblicazione: Munich : , : Hanser, , 2021; ©2021
• Edizione: 2nd ed.
• Descrizione fisica: 1 online resource (526 pages)
• Disciplina: 668.412
• Soggetto topico: Injection molding of plastics
• Altri autori: BrammerSteve
• Nota di contenuto: Intro -- Preface -- About the Authors -- Contents -- 1 Troubleshooting Methodology -- 1.1 Troubleshooting -- 1.2 What Makes an Effective Troubleshooter? -- 1.3 What Makes an Ineffective Troubleshooter? -- 1.4 Troubleshooting Methodology -- 1.4.1 STOP: Systematically -- 1.4.2 STOP: Think -- 1.4.3 STOP: Observe -- 1.4.4 STOP: Proceed -- 1.4.5 STOP: Troubleshooting Cycle -- 1.4.6 Hard Fix versus Processing around Problem -- 1.4.7 Troubleshooting Tools -- 1.4.8 Troubleshooting Methodology Summary -- 2 Troubleshooting Tool Kit -- 2.1 Lockout/Tagout -- 2.2 Hand Tools -- 2.3 Pyrometer -- 2.4 Spotting Blue -- 2.5 Measurement Tools -- 2.6 Multimeter -- 2.7 Process Monitoring Equipment -- 2.8 Moisture Analyzer -- 2.9 Dew Point Meter -- 2.10 Flashlight -- 2.11 Microscope/Magnifying Glass -- 2.12 Silly Putty -- 2.13 Inspection Mirror -- 2.14 Thermal Imaging Camera -- 2.15 Aluminum Tape -- 2.16 Dial Indicator -- 2.17 Purging Compound -- 2.18 Grinder/Stones -- 2.19 Camera -- 2.20 Material Data -- 2.21 Scale -- 2.22 Flow Meter -- 2.23 Mold Cleaning Supplies -- 2.24 Miscellaneous Supplies -- 3 Decoupled® or Scientific Molding -- 4 Gating Details -- 4.1 Gating -- 4.2 Gate Size, Shape, and Taper -- 4.3 Mental Picture Volume versus Pressure -- 5 Mold Hydraulics -- 5.1 Hydraulic Uses -- 5.2 Set and Pull Pressure -- 5.3 Cylinder Sizing -- 5.4 Hydraulic Cores or Slides -- 5.5 Multiple Sequences -- 5.6 Mounting -- 5.7 Switches -- 6 Mold Texture and Polish -- 6.1 Mold Texture -- 6.2 Mold Polish -- 7 Venting -- 7.1 Venting Basics -- 7.2 Alternate Venting -- 7.3 Venting Conclusion -- 8 Machine Performance -- 8.1 Load Sensitivity -- 8.2 Dynamic Check Valve Study -- 8.3 Velocity Linearity -- 8.4 10-Cycle Overlay -- 8.5 Cycle Variation -- 8.6 Velocity to Pressure Transfer -- 8.6.1 Machine Control -- 8.7 Machine Documentation -- 9 Drying -- 9.1 Introduction. ; 9.2 Keys to Drying -- 9.2.1 Temperature -- 9.2.2 Dry Air -- 9.2.3 Air Flow -- 9.2.4 Time -- 9.3 Moisture Analysis -- 9.4 Material Handling -- 9.5 Material Concerns -- 10 Purging -- 10.1 Purging Impact -- 10.2 Purging Method Example -- 10.3 Purging Compounds -- 11 Hot Runners -- 11.1 Hot Runner Advantages -- 11.2 Heaters and Thermocouples -- 11.3 Hang Up Areas -- 11.4 Hot Drop Tips -- 11.5 Drooling, Stringing, and Sprue Sticking -- 11.6 Freeze Off -- 11.7 Orifice Size -- 11.8 Leakage -- 11.9 Zones and Wiring -- 11.10 Hot Runner Troubleshooting -- 12 Cavity Balance -- 12.1 Flow Length -- 12.2 Flow Diameter -- 12.3 Shear -- 12.4 Cooling -- 12.5 Venting -- 12.6 Clamp Pressure -- 12.7 Cavity Fill Balance Study -- 12.8 Artificial Balance -- 12.8.1 Family Molds -- 13 Cavity Instrumentation -- 13.1 Cavity Pressure Technology -- 13.2 Cavity Thermocouples -- 13.3 Process Documentation -- 13.4 Process Control -- 13.5 Additional Monitoring Options -- 14 Mold Cooling -- 14.1 Mold Cooling Importance -- 14.2 Water Flow -- 14.3 Documentation -- 14.4 Tooling Techniques -- 14.5 Additive Manufacturing -- 14.6 Other Cooling Concerns -- 15 Black or Brown Specks -- 15.1 Description -- 15.2 Black Specks Troubleshooting Chart -- 15.3 Black Specks Troubleshooting -- 15.3.1 Black Specks Troubleshooting Molding Process Issues -- 15.3.2 Black Specks Troubleshooting Mold Issues -- 15.3.3 Black Specks Troubleshooting Machine Issues -- 15.3.4 Black Specks Troubleshooting Material Issues -- 16 Blush -- 16.1 Description -- 16.2 Blush Troubleshooting Chart -- 16.3 Blush Troubleshooting -- 16.3.1 Blush Troubleshooting Molding Process Issues -- 16.3.2 Blush Troubleshooting Tooling Issues -- 16.3.3 Blush Troubleshooting Machine Issues -- 16.3.4 Blush Troubleshooting Material Issues -- 17 Brown Streaks -- 17.1 Description -- 17.2 Brown Streak Troubleshooting Chart. ; 17.3 Brown Streak Troubleshooting -- 17.3.1 Brown Streak Troubleshooting Molding Process Issues -- 17.3.2 Brown Streak Troubleshooting Mold Issues -- 17.3.3 Brown Streak Troubleshooting Machine Issues -- 17.3.4 Brown Streak Troubleshooting Material Issues -- 18 Bubbles -- 18.1 Description -- 18.2 Bubbles Troubleshooting Chart -- 18.3 Bubbles Troubleshooting -- 18.3.1 Bubbles Troubleshooting Molding Process Issues -- 18.3.2 Bubbles Troubleshooting Mold Issues -- 18.3.3 Bubbles Troubleshooting Machine Issues -- 18.3.4 Bubbles Troubleshooting Material Issues -- 19 Buildup -- 19.1 Description -- 19.2 Buildup Troubleshooting Chart -- 19.3 Buildup Troubleshooting -- 19.3.1 Buildup Troubleshooting Molding Process Issues -- 19.3.2 Buildup Troubleshooting Mold Issues -- 19.3.3 Buildup Troubleshooting Machine Issues -- 19.3.4 Buildup Troubleshooting Material Issues -- 20 Burns -- 20.1 Description -- 20.2 Burns Troubleshooting Chart -- 20.3 Burns Troubleshooting -- 20.3.1 Burns Troubleshooting Molding Process Issues -- 20.3.2 Burns Troubleshooting Mold Issues -- 20.3.3 Burns Troubleshooting Machine Issues -- 20.3.4 Burns Troubleshooting Material Issues -- 21 Cloudiness -- 21.1 Description -- 21.2 Cloudiness Troubleshooting Chart -- 21.3 Cloudiness Troubleshooting -- 21.3.1 Cloudiness Troubleshooting Molding Process Issues -- 21.3.2 Cloudiness Troubleshooting Mold Issues -- 21.3.3 Cloudiness Troubleshooting Machine Issues -- 21.3.4 Cloudiness Troubleshooting Material Issues -- 22 Color Swirls -- 22.1 Description -- 22.2 Color Swirls Troubleshooting Chart -- 22.3 Color Swirls Troubleshooting -- 22.3.1 Color Swirls Troubleshooting Molding Process Issues -- 22.3.2 Color Swirls Troubleshooting Mold Issues -- 22.3.3 Color Swirls Troubleshooting Machine Issues -- 22.3.4 Color Swirls Troubleshooting Material Issues -- 23 Contamination -- 23.1 Description. ; 23.2 Contamination Troubleshooting Chart -- 23.3 Contamination Troubleshooting -- 23.3.1 Contamination Troubleshooting Molding Process Issues -- 23.3.2 Contamination Troubleshooting Mold Issues -- 23.3.3 Contamination Troubleshooting Machine Issues -- 23.3.4 Contamination Troubleshooting Material Issues -- 24 Cracking -- 24.1 Description -- 24.2 Cracking Troubleshooting Chart -- 24.3 Cracking Troubleshooting -- 24.3.1 Cracking Troubleshooting Molding Process Issues -- 24.3.2 Cracking Troubleshooting Mold Issues -- 24.3.3 Cracking Troubleshooting Machine Issues -- 24.3.4 Cracking Troubleshooting Material Issues -- 25 Delamination -- 25.1 Description -- 25.2 Delamination Troubleshooting Chart -- 25.3 Delamination Troubleshooting -- 25.3.1 Delamination Troubleshooting Molding Process Issues -- 25.3.2 Delamination Troubleshooting Mold Issues -- 25.3.3 Delamination Troubleshooting Machine Issues -- 25.3.4 Delamination Troubleshooting Material Issues -- 26 Dimensions -- 26.1 Description -- 26.2 Dimensions Troubleshooting Chart -- 26.3 Dimensions Troubleshooting -- 26.3.1 Dimensions Troubleshooting Molding Process Issues -- 26.3.2 Dimensions Troubleshooting Mold Issues -- 26.3.3 Dimensions Troubleshooting Machine Issues -- 26.3.4 Dimensions Troubleshooting Material Issues -- 27 Excessive Cycle Time -- 27.1 Description -- 27.2 Excessive Cycle Time Troubleshooting Chart -- 27.3 Excessive Cycle Time Troubleshooting -- 27.3.1 Excessive Cycle Time Troubleshooting Molding Process Issues -- 27.3.2 Excessive Cycle Time Troubleshooting Mold Issues -- 27.3.3 Excessive Cycle Time Troubleshooting Machine Issues -- 27.3.4 Excessive Cycle Time Troubleshooting Material Issues -- 28 High Fill Pressure -- 28.1 Description -- 28.2 High Fill Pressure Troubleshooting Chart -- 28.3 High Fill Pressure Troubleshooting. ; 28.3.1 High Fill Pressure Troubleshooting Molding Process Issues -- 28.3.2 High Fill Pressure Troubleshooting Mold Issues -- 28.3.3 High Fill Pressure Troubleshooting Machine Issues -- 28.3.4 High Fill Pressure Troubleshooting Material Issues -- 29 Flaking -- 29.1 Description -- 29.2 Flaking Troubleshooting Chart -- 29.3 Flaking Troubleshooting -- 29.3.1 Flaking Troubleshooting Molding Process Issues -- 29.3.2 Flaking Troubleshooting Mold Issues -- 29.3.3 Flaking Troubleshooting Machine Issues -- 29.3.4 Flaking Troubleshooting Material Issues -- 30 Flash -- 30.1 Description -- 30.2 Flash Troubleshooting Chart -- 30.3 Flash Troubleshooting -- 30.3.1 Flash Troubleshooting Molding Process Issues -- 30.3.2 Flash Troubleshooting Mold Issues -- 30.3.3 Flash Troubleshooting Machine Issues -- 30.3.4 Flash Troubleshooting Material Issues -- 31 Flow Lines -- 31.1 Description -- 31.2 Flow Lines Troubleshooting Chart -- 31.3 Flow Lines Troubleshooting -- 31.3.1 Flow Lines Troubleshooting Molding Process Issues -- 31.3.2 Flow Lines Troubleshooting Mold Issues -- 31.3.3 Flow Lines Troubleshooting Machine Issues -- 31.3.4 Flow Lines Troubleshooting Material Issues -- 32 Glass Fibers on Surface -- 32.1 Description -- 32.2 Glass Fibers on Surface Troubleshooting Chart -- 32.3 Glass Fibers on Surface Troubleshooting -- 32.3.1 Glass Fibers on Surface Troubleshooting Molding Process Issues -- 32.3.2 Glass Fibers on Surface Troubleshooting Mold Issues -- 32.3.3 Glass Fibers on Surface Troubleshooting Machine Issues -- 32.3.4 Glass Fibers on Surface Troubleshooting Material Issues -- 33 Gloss Variation -- 33.1 Description -- 33.2 Gloss Variation Troubleshooting Chart -- 33.3 Gloss Variation Troubleshooting -- 33.3.1 Gloss Variation Troubleshooting Molding Process Issues -- 33.3.2 Gloss Variation Troubleshooting Mold Issues. ; 33.3.3 Gloss Variation Troubleshooting Machine Issues.
• Sommario/riassunto: This highly practical troubleshooting guide solves injection molding problems systematically and quickly. The rigorous but user-friendly approach employs the authors' proven "STOP" methodology, considering molding process, mold, machine, and material (4M's) as possible sources of part defects. Importantly, the interaction between tooling, processing, and material is emphasized, allowing successful resolution of difficultproblems where "by-the-books" approaches fail. Starting from troubleshooting methodology and tools, there is a focused discussion of key areas impacting troubleshooting, in particular the 4M's, followed by an in-depth troubleshooting guide for various molding defects, structured logically by type of problem / solution. Insightful case studies throughout show the strengths of the STOP method to get real processes to run smoothly and reliably, producing quality parts with optimal cycle time and cost. Drawing on a wealth of hands-on experience, this book serves as an ideal reference to be consulted at the machine, or as a learning and training manual, suitable for both beginners and experienced molders. With valuable information on robust process windows, cycle time evaluations, scrap savings, and runners / gates with no existing standard in the industry, no other book provides the unique insights found here. The 2nd edition is updated with new discussion and case studies on topics including additive manufactured inserts, unmelts, buildup, burns, cycle time, gloss variation, and read-through.
• Titolo autorizzato: Injection Molding Advanced Troubleshooting Guide
• ISBN: 9781523145065; 1523145064; 9781569908358; 1569908354
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Lingua di pubblicazione: Inglese
• Record Nr.: 9911007143103321
• Lo trovi qui: Univ. Federico II