Operation - 1

Thermal Paste Application on Alumina Sheets:

1. One complete set of alumina is placed on to the machine.
2. The placement of alumina could be manual o robotized based on volume
3. The thermal paste dispensing nozzle applies each plate
4. A spatula then spreads the thermal paste evenly on to the alumina surface

Detail Explanation
of Manufacturing Process

Operation - 2

Assembly of Electrode and Ceramic stones:

1. Alumina sheets coupled with thermal paste is brought to operation 2 by robotic arm. Keeping it upside down.
2. Single component Silicon adhesive is applied on to the alumina and in next operation one electrode is placed.
3. A thin layer of single component adhesive again is applied on to the electrode.
4. Required number of PTC ceramic stones are placed on to the electrode by robotic arm.

Detail Explanation
of Manufacturing Process

Operation - 3

Assembly of Electrode and Ceramic stones:

1. Adhesive is again applied on to the top surface of PTC stones.
2. Another electrode is placed on to the top surface of PTC stones.

Detail Explanation
of Manufacturing Process

Operation - 4

Assembly of Alumina Sheet On To The Top Electrode:

1. Alumina sheets coupled with thermal paste is brought to operation 4 by robotic arm. Keeping it such that the Thermal paste surface would be on the top.
2. Now the Heating assembly is ready to be inserted to the tube.

Detail Explanation
of Manufacturing Process

Operation - 5

Placement of Heating Element Inside The Tube

1. Grippers are used to hold the heating element carefully.
2. Grippers lifts the heating element one by one and places it inside the tube.

Detail Explanation
of Manufacturing Process

Operation - 6

Pressing of Tube to arrest heating element inside the tube:

1. A load is applied by hydraulic press the squeeze the tube to arrest heating element inside the tube.
2. No need of putting into the oven as fin is already brazed to the tube top and bottom surfaces.
3. Final check of equivalent resistance is done by quality engineer. If the tube inside surface touches completely to the flat surface of alumina, the measured resistance value should be withing R +/- 5% of calculated value of equivalent resistance.

Detail Explanation
of Manufacturing Process

End of Line Testing Equipment

The End of line test equipment would check followings :
1. Final Resistance value of PTC core
2. Any electrical body leakage
3. Heating of Tube and fin surface when a power supply is given for certain period of time

Operation - 7

Detail Explanation
of Manufacturing Process