soldering fiber optic cable | Manufacturer of induction heating machine ,ultrasonic welding machine

Soldering Fiber Optic for Hermetic Sealing

Soldering Fiber Optic Cable for Hermetic Sealing With IGBT Induction Soldering Heater

Objective To heat a Kovar ferrule and fiber optic cable to 297°F within 10 seconds for a soldering application, to form a hermetic seal
Material Gold-coated cable, Kovar ferrule, solder and flux
Temperature 297 ºF
Frequency 360 kHz
Equipment DW-UHF-4.5kW power supply with a specially designed induction coil
Process A specially designed, 4-turn “C” shape coil was used to provide uniform heat to the assembly near the joint area. With this design, the coil can be lowered directly onto the joint; it is not necessary to feed the ferrule assembly through the coil. Flux was applied to the assembly where the ferrule and fiber optic cable were to be joined. RF power was applied for 10 seconds, which caused the solder to melt and flow.
Results/Benefits Consistent and repeatable results were achieved with the DW-UHF-4.5kW power supply and a 10-second heat cycle. The solder flowed evenly and bonded the fiber optic cable to
the Kovar ferrule. With the induction coil’s compact design, a very small surface area was heated with pinpoint accuracy.

induction soldering Fiber Optic cable

induction soldering fiber optic cable

Induction soldering fiber optic cable with high frequency induction heating units

Objective To heat a gold-plated ferrule and fiber optic cable to 475°F within 8 seconds for a soldering application
Material Gold-plated ferrule tube, fiber optic cable, solder preform
Temperature 475 ºF
Frequency 270 kHz
Equipment DW-UHF-4.5kW power supply with a specially designed induction coil.
Process A specially designed, two-turn plate concentrator coil was used to provide uniform heat to the fiber optic assembly. The assembly was placed in a specially designed fixture, then placed inside the induction coil. RF power was applied until the solder flowed and created a solid joint.
Results Consistent and repeatable results were achieved using the DW-UHF-4.5kW power supply and induction coil with a 5 to 7 second heat cycle, depending on the type of solder used (see solder chart below).

Induction soldering fiber optic cable