Model GBW-600 Erichsen Metal Sheet Testing Machine for FLC, FLD

GBW series Erichsen Metal Sheet Testing Machine is designed on the basis of screw universal material testing machine, using the servo motor for highly accurate loading for punching, meanwhile, it is equipped with hydraulic servo control system for pre-tightening/clamping of metal sheet. It is ideal to evaluate the plastic deformation performance and ductility of metal sheet & strip materials. The cupping test for metal sheet thickness range is 0.1mm-5mm, Max. Punching capacity is 600KN, and the pre-tightening/clamping device is with hydraulic servo loading pump for 600kN capacity;


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  • Application:

    GBW series Erichsen Metal Sheet Testing Machine is designed on the basis of screw universal material testing machine, using the servo motor for highly accurate loading for punching, meanwhile, it is equipped with hydraulic servo control system for pre-tightening/clamping of metal sheet. It is ideal to evaluate the plastic deformation performance and ductility of metal sheet & strip materials. The cupping test for metal sheet thickness range is 0.1mm-5mm, Max. Punching capacity is 600KN, and the pre-tightening/clamping device is with hydraulic servo loading pump for 600kN capacity;

     

    Erichsen cupping test as per EN ISO 20482, ASTM E 643, GB/T 4156;

    Deep drawing cups test as per ISO 11531, EN1669, GB/T 11531, GB24183;

    Hole expansion test (KWI TEST) as per ISO 16630, GB/T 24524;

    Forming-limit Diagram (FLD) & Forming-limit Curve (FLC)-Nakajima Test as per ASTM E2218, ISO 12004, GB 24171

     

    Features:

    Constant punching speed control, testing speed variable

    Constant clamping force by the servo hydraulic cylinder, no slippage during the test;

    High precision load cell for force measuring

    Photoelectric encoder for measuring the displacement of punching head

    High control accuracy and fast response to stop the punching head instantly

    Dual servo systems (punching & constant clamping force) integrated in one machine;

    High automation: after setting the test parameter, testing can be done with click

  • Fixtures for FLC/FLD test, as per ASTM E 2218

    Punching ram: dia. 100mm, without beads

    1 drawing die without beads

    1 clamping die without beads

    Maximum force: 1000kN

    With Mercury RT Optical measuring system to acquire FLD diagram & FLC curve:

    20180523101325261.png

    20180523101325270.png

    20180523101325152.png

    20180523101328305.png

    20180523101329336.png

    Please see the separate catalog for camera system & FLD diagram system


  • Specification:

    Test force range: 2.4-600kN

    Maximum punching force: 600kN

    Maximum clamping force: 600kN

    Force accuracy: +/-0.5%

    Force resolution: 0.001kN

    Punching stroke: >120mm

    Clamping piston stroke: >60mm

    Punching stroke resolution: 0.025um

    Clamping stroke resolution: 0.001mm

    Test speed: 0.01-1000mm/min

    Speed resolution: 0.01mm/min

    Maximum width of metal sheet: 220mm

    Maximum diameter of metal sheet: dia. 220mm

    Test range that can be achieved with this machine:

    Cupping test for standard: thickness: 0.1-2.0mm

    Cupping test for non-standard: thickness: 2.0-6mm

    Deep drawing cups test: thickness: 0.45-5mm

    Hole expansion test: thickness 0.2-4mm

    FLC/FLD test: thickness: 0.2-2.5mm

    Punching load mode: servo motor closed-loop control

    Clamping load mode: hydraulic servo closed-loop control

    Power supply: 380V, 3PH, 50Hz, 8kW

    Dimension: 1250x1100x1850mm

    Weight: approx. 2400kg