This is the coolant recirculator attached to the Thermal Dynamics WC 100B Welding Console which is to the left of it (not in the picture). The welding console is design to be part of a system for direct current polarity plasma welding. The console provides the necessary control fuctions to operate Thermal Arc "A" series plasma welding torches. The WC 100B contains a pilot arc power supply. The bottom picture shows the Welding Console attached to the coolant recirculator.
Power Source:
- Direct Current Output
- A drooping volt/ampere charcteristic.
- A nominal open circuit voltage of 70-80 volts.
- A remotely controllable contractor.
- An adjustable output
Coolant Supply:
- Pressure between 50 and 125 PSIG
- Thermal Arc Torch Coolant recommended.
- Flow rate as required by torch.
- Losed loop system (complete with non-ferrous construction) with liquid air heat exchangel and deionizer required
Thermal Dynamics Manual
This picture shows the x-y linear postioning table being used in current rapid prototyping experiments. The x-axis travel length has a 9 inch stroke while the y-axis travel length has a 16 inch stroke. It also has a removable overhead arm assembly for mounting the z-axis, and it was puchased from Servo Systems Co. model LPS-112. It is equiped with Yasakawa Electric DC motors with built in optical encoders, to move the axes. The torch is held stationary by the overhead arm as seen in the upper right hand portion of the picture, while the x and y axes move the base underneath. A z axis DC is also mounted to the overhead arm to provide movement in the third dimension.
The left hand side picture is the control box for the 25,000 dollar infrared camera. This camera was last used in scan welding control experiments for Yianne's and Harry's Masters theses.
In the right hand picture on the top is the digital wire feeder being used with the Thermal Dynamics PWH/M-4A Welding Torch in the rapid prototyping experiments. At the bottom is the main power supply controlling the main plasma arc flame.
Emmanuel Roble
eroble@emerald.tufts.edu
eroble@diamond.tufts.edu
v.8.1