Ericsson Testing Device
Application:
* Deep drawing test in the behavior of metals by the Swift method (Cupping test) to study the depth of cupping and also the phenomenon of earring.
* Biaxial tensile test or Erickson›s expansion test to determine the limiting dome height (LDH) and draw Forming Limit Diagrams (FLD)
* Conducting Hot Forming test on different sheets
* Helping to design or more accurate calculations according to simulated work conditions
* Controlling the raw materials before production Research and development in the field of metal sheets
Product Introduction:
The universal sheet device (Ericsson) is designed to check different sheets. This device includes molds and standard mandrels, which with a very accurate hydraulic mechanism, the amount of force between the molds and the movement speed of the mandrel can be presented in a completely controlled and definable way. With the help of this device, the behavior of biaxial tension on the sheets can be studied and the Limiting dome height (LDH) value is measured by the corresponding sensor. This method is performed with a spherical mandrel. This machine also has the ability to perform deep drawing of sheet metal using the Swift method with a completely flat mandrel. The mechanism of the device consists of two independent hydraulic jacks (for clamping and mandrel) and the function of the device is servo-hydraulic (motor and servo driver) with feedback from changing the position and force to stabilize the speed. Applying its force is performed in a close loop manner and the clamping force of the mold is performed automatically with an independent definition. This device has the ability to stop the test automatically (adjustable) after a crack occurs in the sheet.
Technical Specifications:
Model | STE-200 |
User interface | By Touch Screen (HMI). |
Control system | PLC type with the ability to adjust the parameters of the test method, automatic adjustment of the loading rate and jaw clamping force, and the remote control of the device via LAN to the computer. |
Graph drawing | On the screen and the possibility of sending information to the computer by Flash USB 2 |
Mandrel mold number | 2 types of spherical mandrel |
Mold and mandrel model | Two types of molds for cold testing |
Degree of power resolution | Resolution 1/40.000 of capacity |
Speed control range | 0.1-300 mm/min |
Accuracy of displacement measurement | Extension resolution 0.001 mm |
Jaw clamping | Hydraulic with adjustable clamping force (kN 400) |
Hot test | Equipped with PID controller for reading PT100 and related settings in HMI |
Consumping Electricity | Three-phase electricity; 380 V, 10 A |
Device dimension | 110 × 80 × 175 cm |
Weight | 1200 kg |
Advantages:
* Ability to replace all types of molds and mandrels according to different standards
* Ability to perform Hot Forming test in case of ordering the relevant mold and mandrel
* Stopping the test automatically after a crack occurs
* Easy to use and easy to transport the device
* Reproducibility of results Lower price than similar products
* Very high efficiency
International Standards or Permission:
* EN DIN ISO 20482
* DIN EN 1669