Induction Heating Steel Mold

Induction Heating Steel Mold For Rubber Seal With High Frequency Heating System

Objective To heat a steel mold evenly to 392ºF (200ºC) to be used on a press for rubber seal vulcanization
Material Steel mold 13.4” (340mm) diameter, 2.16” (55mm) width,
approximately 77.2 lbs (35kg)
Temperature 392ºF (200ºC)
Frequency 20kHz
Equipment • DW-MF-70kW induction heating system, equipped with a remote workhead containing eight 0.3μF capacitors for a total of 0.6μF
• An induction heating coil designed and developed specifically for this application.
Process Two thirteen turn pancake coils are used to heat both sides of the mold simultaneously for 170 seconds to reach an external temperature of 392ºF (200ºC). The power is continually decreased over the next 390 seconds to reach a uniform temperature of 392ºF (200ºC) ± 41ºF (5ºC) throughout the
mold.
Results/Benefits Induction heating provides:
• Repeatable and consistent heat
• Quicker process time, increased production
• Even distribution of heating

induction heating steel mold

 

 

 

 

 

 

RF heating steel mold

 

 

 

 

 

 

 

 

 

induction heating steel casting

induction heating steel casting of rubber mold with high frequency induction heater

Objective To preheat two irregularly shaped steel castings to be molded and bonded with synthetic rubber
Material Two steel castings, 17 lb. irregularly shaped, approximately 6” (152mm) x 9” (229mm) x 1” (25.4mm)
Temperature 400 ºF (204 ºC)
Frequency 20 kHz
Equipment • DW-MF-45kW induction heating system, equipped with a remote workhead containing four 1.0 μF capacitors (for a total of 1.0 μF).
• An induction heating coil designed and developed specifically for this application.
Process Two steel castings are placed onto an insulated plate with brass guide location pins. The plate is placed onto a table which slides into a large multi-turn helical coil. The parts are induction heated to 400 ºF in 180 seconds. The slow heating time allows the parts to come up to temperature evenly. When the heating cycle is completed each part is placed into a press for the molding and bonding operation.
Results/Benefits Induction heating for bulk preheating of steel castings
produces:
• efficient and repeatable heat vs. a torch or an oven.
• even heating of parts throughout
Large multi-turn coils provide:
• easy loading and unloading of the parts
• flexibility for varying bulk castings sizes and geometries