Midiflow – GMK

 

TECHNICAL INFORMATION:

For rear surface gating of small to medium sized mouldings.

Supports contouring to a depth of 8 mm. Suitable for gate diameters up to 1.8 mm and shot weights up to 200 g per insert.

Available types are GMK-1, GMK-2 and GMK-3.

Suitable for all common plastic, including reinforced types.


  • Midiflow-1_Vorderansicht Midiflow-2_Vorderansichtmidiflow-3_Vorderansicht
    Midiflow-1-2-3_Ansicht_Unten
  • GMK-1: “Below the parting line” Features:

    • Injection point may be up to 8 mm below the parting line.
    • Allows injection close behind upstanding ribs.
    • Gating can be far off the moulding wall.
    • Spherical geometry in the gate area allows injection with at laterally inclined or curved surfaces.

    Bild_Seite_27-1_ge

    GMK-1: “Above the parting line” Features:

    • Injection point may be up to 8 mm below the parting line.
    • Allows injection close behind upstanding ribs.
    • Gating can be far off the moulding wall.
    • Spherical geometry in the gate area allows injection with at laterally inclined or curved surfaces.

    Bild_Seite_27-2_ge

    GMK-2: “Below the parting line” Features:

    • Injection point may be up to 5 mm below the parting line.
    • Allows injection close behind upstanding ribs.
    • Gating can be far off the moulding wall.
    • Spherical geometry in the gate area allows injection with at laterally inclined or curved surfaces.

    Bild_Seite_28-1_ge

    GMK-2: “Above the parting line” Features:

    • Injection point may be up to 5 mm below the parting line.
    • Allows injection close behind upstanding ribs.
    • Gating can be far off the moulding wall.
    • Spherical geometry in the gate area allows injection with at laterally inclined or curved surfaces.

    Bild_Seite_28-2_ge

    GMK-3: “Below the parting line” Features:

    • Injection point may be up to 8 mm below the parting line.
    • Allows injection close behind upstanding ribs.
    • Gating can be far off the moulding wall.
    • Spherical geometry in the gate area allows injection with at laterally inclined or curved surfaces.

    Bild_Seite_29-2_ge

    GMK-3: “Above the parting line” Features:

    • Injection point may be up to 8 mm below the parting line.
    • Allows injection close behind upstanding ribs.
    • Gating can be far off the moulding wall.
    • Spherical geometry in the gate area allows injection with at laterally inclined or curved surfaces.

    Bild_Seite_29-3

  • Installation dimensions “GMK”

    Recommended distances “L” from the injection point to the sprue ejector are given below for the various material groups. 

    The distance “AT” describes the correlated ejector depth.

    Einbaumass_gmk_englisch 

     
     
  • Thermoplastics Elastomers

    When processing thermoplastic elastomers, please observe the following recommendations to ensure reliable de-molding:

    • The distance “L” should decrease with the Shore hardness value.
    • The guide length L*0.8 does not apply to TPEs (or TPU, TPA, respectively). In these applications, a centering cone should be provided as shown in our drawing.
    • This application instruction applies to elastomers in the medium Shore hardness range (uo to 100 Shore A).

    tpe_englisch 

  • Gate sizes

    We would like to make it as easy as possible for you to select the right gate size. To help you make your choice we have plotted a number of charts indicating the range of possible gate sizes for a given molding weight and material. Please take into account the viscosity of the plastic before making your selection. Since the plastics industry is marketing an ever growing number of modified plastics in each category, it is impossible to provide binding data here. Please also note our warranty disclaimer.

    table_of_viscosity_low_Standard_800x900.svg 

  • EXAFLOW Tunnel Gate Inserts

    Catamold 420W-DIN 1.4028-X20Cr13  ( until July 2017,  100Cr6 1.3505 )

    Material designation:
    BASF Catamold 420W – DIN 1.4028 – X20Cr13.
    Hardable stainless steel for production of MIM-Parts.

    Applications:
    Components with high hardness and wear resistance combined with good corrosion resistance against water and steam; e. g. tools, cutting blades, surgical instruments, nozzles, bearings.

    • High wear resistance
    • High corrosion resistance
    • Good machinability
    • Weldable

     

    Composition:
    C = 0.35 – 0.50 %
    Cr = 12 – 14 %
    Fe = Balance

    Surface quality, roughness Ra 0.8 – 1.3

    Properties:
    Density 7.6 g/cm³
    Carbon content 0.35 – 0.50 %
    Hardness 50 +5 HRC
    Ultimate Tensile Strength Rm      (heat-treated) 1560 mm²

SERVICE

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