Pulse Heat (Hot Bar) Reflow Soldering
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- Pulse Heat (Hot Bar) Reflow Soldering
What is Pulse Heat (Hot Bar) Reflow Soldering ?
Pulse Heat (hot bar reflow) soldering is an instantaneous heating method which results in an immediate solder, thermocompression bond or resin weld between two workpieces.
The process is performed by combining instantaneous heat and pressure to the workpieces.
Resistance heat is generated by an electric current through a metal heating element called the heater chip/heater tool. This method is a unique development of Nippon Avionics.
The Pulse Heat Unit consists of a pulse heat power supply that controls the current, reflow head that holds and applies pressure to the workpieces to be welded and heater tip/heater tool that holds workpieces and generates resistance heat.
Compared to constant heat soldering methods, the pulse heat process has less thermal effect on peripheral components.
It is widely used for narrow pitch soldering and thermo-compression bonding of ACF’s.
Features of Pulse Heat (Hot Bar) Refiow Soldering Units
Pulse Heat units are primarily used for electronic soldering such as information terminals. These machines use temperature feedback from the heater tool/heater tip to provide precise temperature control to the workpieces.
The accurate implementation of the temperature feedback also allows for reliably reproduced temperature profiles to be used in the workpiece joining process. In addition, it is also possible to control the amount of solder melt at the workpieces to further control the quality of the workpiece joins.
Application examples
- ACF heat seal joining on LCD and touch flat panels
- Soldering of CCD and/or CMOS used in mobile phones and digital cameras
- Soldering of FPC and PCBs
Soldering of insulated wires for electronic components or industrial manufacturing such as AV equipment, home electronics and home appliances
Gang soldering of ultra fine wire or co-axial cable for grounding or other connections
- Heat caulking of lenses and circuit boards
Pulse Heat (Hot Bar)Reflow Soldering Products
The Pulse Heat Unit consists of a pulse heat power supply that controls the current, reflow head that holds and applies pressure to the workpieces to be welded and heater tip/heater tool that holds workpieces and generates resistance heat.
Nippon Avionics offers models that can simultaneously control temperature and displacement, as well as models that can be integrated into automated process lines.
Pulse Heat (Hot Bar) Reflow Soldering Applications
Video and IM Micro Joining Examples:
Resistance Welding
Ultrasonic Welding
Ultrasonic Metal Welding
Parallel Seam 
High Frequency Induction Heating