The TECH TOPICS category is an archive of Technical Topics that have appeared in past issues of the SPE GGS Spearhead.

We provide this category to aid you in finding those technical topics that might be of interest to you or your organization.

If you or anyone you know is interested in writing a technical article for our Spearhead, please contact: postmaster@spe-ggs.org

TECH TOPICS OUTLINE

INJECTION MOLDING
 

    DESIGN
        Volume calculations
        What nozzle is correct?
        Gating #1
        Gating #2
        Part breakage
        Cooling calculations #1
        Cooling calculations #2
        Cooling calculations #3
        Cooling calculations #4
        Why Eject?
        Sprues
       A Good Part  pt. 1
       A Good Part  pt. 2
       A Good Part  pt. 3
       A Good Part  pt. 4
       Using Checklists (Molds)
 

    MOLD FLOW
        Mold Flow for part quality
        Mold Flow for part cost
        Mold Simulations and faster cycles
 

    PROCESSING
        Ancillary equipment
        Basic machine process control
        Cooling supply
        Cycle time
        Intensification ratio
        Process Review
        Purging - the process
        Troubleshooting  Basics #1
        Troubleshooting  Basics #2
        Troubleshooting  Basics #3
        The set-up sheet
        General purging guidelines
        Pressure drop / Shrinkage
        Process water for molding
        Injection speed
        Foaming
        Water Lines for Dummies
        Water Temperature
        Proper Cooling
        Why Parts Change
        Processing Special Materials
        Basic Processing Questions
        The Process
        Determining Pack Time
        Determining Cool Time
        Consistent Shots
        The Process - Results
 

    TOOLING
        Gate location
        Hot runners #1
        Hot runners #2
        Hot runners #3
        Hot runners -startup
        Mold Balance
        Machine Nozzles
        Ejector Rods
        Maintenance of Tools/Molds
        Maintenance of others
        Basic Tool Design
        Hot Runners -Idiot Proofing
        Cold Runner Sizes
        Care of Hot Runners
        Hot Runner Thoughts
        Hot Runner Thoughts pt. 2
        Hot Runner Thoughts pt. 3
        The Inherited Tool / Job pt. 1
        The Inherited Tool / Job pt. 2
        The Inherited Tool / Job pt. 3
        The Inherited Tool / Job pt. 4
 

    MATERIALS
        Color #1
        Color #2
        Color #3
        Color #4
        Color #5
        Material Basics #1
        Material Basics #2
        Material Basics #3
        Material Basics #4
        Material handling #1
        Material handling #2
        Material handling #3
        Material handling #4
        Material handling #5
        Material handling #6
        Material handling #7
        Materials Failure
        Changing Colors
        Material Specs On Line
        Saving Scrap
        Scrap Reduction by Housekeeping
        Drying of Materials part 1
        Drying of Materials part 2
        Drying of Materials part 3
        Drying of Materials part 4
        Drying of Materials part 5
 

    MACHINERY
        Machine Hydraulics
        Machine Watch
        Machine Maintenance
        Grinders
        Filters
        The Molding Machine part 1
        The Molding Machine part 2
        The Molding Machine part 3
        The Molding Machine part 4
        The Molding Machine part 5
        The Molding Machine part 6
        The Molding Machine part 7
        The Molding Machine part 8
        The Molding Machine part 9
        The Molding Machine part 10
        The Molding Machine part 11
        The Molding Machine part 12
        Thermal Expansion - Clamp Area
 

EXTRUSION
 

    PROCESSING
        Draw down ratio
        Wall thickness
        Dial in taper
        Vendor quality
        Extrusion technician
 

    TOOLING
        Breaker plate #1
        Breaker plate #2
        Crosshead design
        Extrusion head
        Gear pump
        Feed throat

MISC.
 

    LEGAL ISSUES
        Trade secrets
        Mark's Rules

    BUSINESS PRACTICES
         Just In Time
         Price Reduction Requests
         Quoting Competitor's Parts