Note: Bonding Metal Housings to Plastic Holders for Lenses
Objective:
To heat two lens housings to 400 ºF (204 ºC)
End Product:
lens housing
Equipment:
Ambrell EASYHEATTM 5 kW, 150-400 kHz solid state induction power supply with a workhead and coil specifically designed for this application.
Materials:
Metal housings mounted on a circuit board, lenses mounted in plastic holders.
Temperature:
400 ° F (204 °C)
Frequency:
350 kHz
Testing:
The assembly was placed on a non-conductive board to simulate the circuit board in the actual application. The area around the induction coil was very congested, with several electrical components in the immediate vicinity. A single-turn specially shaped induction coil was designed for this bonding application. Initial tests were conducted using temperature indicating paint to establish heating profiles and time-to-temperature. Power was then applied until the temperature indicating paint melted. The metal-to-plastic assemblies needed 3.5 seconds to form a good bond.
Benefits:
-
Improved processing quality by delivering uniform heat to two parts at once using a single-turn ‘peanut’ coil.
-
Localized heat enables easy alignment of optical components during final assembly.
Visit our Applications Lab to learn more about free applications testing.
1655 Lyell Ave, Rochester, NY 14606 USA | Tel: +1 585 889 9000