Tri-Axial Decompression (TD) Device on Carver Hydraulic Press

Transcription

1 Measurement Control Corporation 13D Great Meadow Lane, East Hanover, New Jersey 07936, U.S.A. (800) mcc-online.com fax: (862) Tri-Axial Decompression (TD) Device on Carver Hydraulic Press 1

2 Figure1. Identification and location of device components and control units 2

3 Figure Initial functional check Make sure all device components are cleaned and installed; the Front Transparent Door is closed and locked. Turn on the Main Switch and power switch (lighted) on Carver Control Unit. The LED Indictor on MCC Amplifier Box should be ON (see Figure 1 & 2). 3

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5 1.2. Connect MCC laptop via USB cable (supplied by MCC) to MCC Amplifier Box and start AIM program. At Row Data File\Collect New Row Data open real time controller screen and open BASE LINE screen Push ZERO BALANCE button to zero reading of force transducers Choose on Carver Control Unit the Manual Mode and set load to 2000lb using 12-key keypad Push simultaneously two CLOSE buttons on Carver Control Unit until the Upper Punch Head will touch the Upper Platen and the Force reading at Process Display will reach preset number On a laptop at BASE LINE screen push SET ZERO LEVEL button to zero reading of Gage Head (LVDT). Return to main screen Push OPEN button on Carver Control Unit to release force and lower down TD Device. 5

6 1.8. Open front transparent door on Carver Press, pull out Upper Punch, pull out left side Ejector Pin, pull out right side Ejector Pin, remove Door using Door Handle, take out front half of Split Die. 6

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8 1.9. Place the 0.200in thick Gage Block (supplied by MCC) on the tip of Lower Punch Place back the all removed components of TD Device in opposite order, close the Front Transparent Door Repeat actions as per par The Tablet Thickness reading on main screen of real time controller should be about 5.08mm (0.200in) Repeat action as per par Making tablets Power the Carver Press Make sure the Initial functional check per paragraph 1 is done On a laptop start AIM program, create new directory, open new folder and new file, open real time controller screen, open BASE LINE screen, push ZERO BALANCE button On Carver Control Unit using 12-key keypad set level of force you are planning to work with Push simultaneously two CLOSE push buttons on Carver Control Unit until the Upper Punch Head will touch the Upper Platen and the Force reading at Process Display will reach preset number On the laptop at BASE LINE screen push SET ZERO LEVEL button to zero out the Gage Head (LVDT). Return to main screen Push OPEN button on Carver Control Unit to release force and lower down TD Device Open front transparent door, pull out Upper Punch and install the plastic funnel (supplied by MCC) instead of Upper Punch. 8

9 2.9. Using transparent Volume Limiter (supplied by MCC) weigh amount of powder and pour it into funnel installed on Split Die Remove the funnel and install the Upper Punch Close the front Transparent Door On a laptop push button RECORD on real time controller screen Choose AUTO or MANUAL mode on Carver Control Unit with preset level of Clamping Force corresponded to level as per par Warning: do not preset the Clamping Force more than lbs. (60.0 kn)! Start and finish preprogrammed compressing cycle Recording of data will start and finish automatically according to start and finish of compressing cycle Warning: if the force at RDW Transducer during compression cycle will exceed level of 20kN the AIM will shout off the compression cycle to protect the RDW Transducer from overloading! Open front transparent door, pull out Upper Punch, pull out left side Ejector Pin, pull out right side Ejector Pin, remove Door using Door Handle, take out front half of Split Die, pull slightly to front Lower Punch to take out compressed tablet. 9

10 2.19. Weigh compressed tablet and measuree its thickness Clean Punches and Die from remains of powder Protect the sharp edges of Punch tips and inner surface of Split Die from damages. 3. Software 3.1. Real-time recording starts and stops automatically when the thickness trace falls below and raises above certain values Once a tablet trace iss recorded, you can make another run (tablet) to be stored in the same Raw Data File, or quit to get back to the main AIM menu Please read the supplied AIM user manual to familiarize yourself with the general AIM menu, function and file structure To analyze data collected from the press, use Replay function you will be able to zoom in, measure amplitude of and time intervals between the signals. 10

11 3.5. To make plots, accept runs into the User / Experimental File, then select plot from the Graphics menu. Available plotss are: Heckel plots, Picker (3-D Heckel) plots, Force vs. Displacement plots (to estimate work of compaction),, In-Die Thickness vs. Force plots (to estimate elastic recovery), Strain vs. Stress plots, and Radial Die Wall Pressure vs. Applied Pressure. 11