Technologies Archives - Page 29 of 36 - induction heating machine manufacturer

Induction Heating Steel Part For Hot Heading

Induction Heating Steel Part For Hot Heading With IGBT Induction Heater

Objective Heating steel parts to 1900ºF (1038ºC) for hot heading application
Material Steel parts with 7/16” (11.11mm) OD and ceramic piece
Temperature 1900 ºF (1038ºC)
Frequency 440 kHz
Equipment • DW-UHF-6kW induction heating system, equipped with a remote workhead containing one 0.66μF capacitor.
• An induction heating coil, designed and developed specifically for this application.
Process A four turn helical coil with ceramic insert is used to heat a 0.75” (19mm) section of the part to 1900ºF (1038ºC) for 7.5 seconds. A ceramic piece is so the part does not come in
contact with the coil.
Results/Benefits Induction heating provides:
• Hands-free heating that involves no operator skill for manufacturing
• Direct application of the heat on the work piece with precision and consistency
• Even distribution of heating
• Low pressure and minimal residual part stress

Induction Heating Wires For Hot Heading

Induction Heating Wires For Hot Heading With IGBT Induction Heating Units

Objective To heat multiple steel wires to 1350ºF (732ºC) for hot heading application
Material Steel wire 0.185” (4.4mm) OD
Temperature 1350 ºF (732ºC)
Frequency 141 kHz
Equipment • DW-UHF-6 kW induction heating system, equipped with a remote workhead containing one 0.66μF capacitor
• An induction heating coil designed and developed specifically for this application.
Process A two turn channel coil is used to heat 12 wires at a time to reach the required 130 parts per minute. The wires are placed 0.5” (12.7mm) on center. The top 0.3” (7.6mm) of the wires are
heated for 5 seconds to achieve the desired temperature.
Results/Benefits Induction heating provides:
• Hands-free heating that involves no operator skill for manufacturing
• Elimination of springback effect
• Extended die life
• Better grain flow and microstructure
• Even distribution of heating

Induction Preheating Hot Heading

Induction Preheating Hot Heading For Single Rod With IGBT Induction Heater

Objective Heat a waspaloy rod to 1500ºF (815.5ºC) for hot heading application
Material Waspaloy rod 0.5” (12.7mm)OD, 1.5” (38.1mm) length, ceramic liner
Temperature 1500 ºF (815.5ºC)
Frequency 75 kHz
Equipment • DW-HF-45KW induction heating system, equipped with a remote workhead containing two 1.32μF capacitors for a total of .66μF
• An induction heating coil designed and developed specifically for this application.
Process A seven turn helical coil is used to heat the rod. The rod is placed inside the coil and power is applied for two seconds providing enough heat to penetrate the inner core. An optical pyrometer is used for close loop temperature control and a ceramic liner is used so the rod does not touch the coil.
Results/Benefits Induction heating provides:
• Low pressure and minimal residual stress
• Better grain flow and microstructure
• Even distribution of heating
• Improved production rates with minimal defects

Induction Heating Stainless Steel

Induction Heating Stainless Steel Rod For Hot Forming With RF Induction Heating Units

Objective Heating 300 series stainless steel rod to 1800ºF (982ºC) for forming application
Material 1” (25.4mm) length of 300 series stainless steel rod ¾ “ (19mm) diameter
Temperature 1800 ºF (982ºC)
Frequency 52 kHz
Equipment • DW-HF-25kW induction heating system, equipped with a remote workhead containing two 1.25μF capacitors for a total of .625μF
• An induction heating coil designed and developed specifically for this application.
Process A four turn helical coil is used to heat the stainless steel rod to 1800 ºF (982ºC) for 10 seconds. For manufacturing purposes a refractory shield should be used between the coil and rod to
keep the heat directed on the rod. Refractory shield was not used during testing.
Results/Benefits Induction heating provides:
• Hands-free heating that involves no operator skill for manufacturing
• Improved production rates with minimal defects
• Low pressure and minimal residual part stress
• Even distribution of heating

Induction Heating Aluminum Pipe

Induction Heating Aluminum Pipe For End Forming With High Frequency Induction Heater

Objective Through heating the top 2” (50.8mm) of aluminum oxygen tank to form a rounded end with a hole for oxygen valve
Material Aluminum oxygen tank with open end 2.25” (57.15mm) diameter, 0.188” (4.8mm) wall thickness
Temperature 700 ºF (371 ºC)
Frequency 71 kHz
Equipment • DW-HF-45kW induction heating system, equipped with a remote workhead containing two 1.5μF capacitors for a total of 0.75μF
• An induction heating coil designed and developed specifically for this application.
Process A five turn helical coil is used to heat the open end of the oxygen tank. The tank is heated for 24 seconds to reach 700ºF (371 ºC).
Results/Benefits Induction heating provides:
• Uniform through heating
• Fast, energy-efficient heat
• Fast, controllable and repeatable process
• Hands-free heating that involves no operator skill for manufacturing

Induction Heating Steel Pin

Induction Heating Steel Pin For Loosening With RF Induction Heater

Objective Heat steel tie downs on containers to loosen steel pin so pin can rotate
Material Steel tie-down assembly with a 2.5” (63.5mm) dia. flange, 1” (25.4mm) dia. rod and pin ring approx 4” (101.6mm) OD and 0.75” (19.05) thick steel
Temperature 1000ºF (538ºC)
Frequency 282 kHz
Equipment •DW-UHF-20kW induction heating system, equipped with a remote workhead containing two 1.5μF capacitors for a total of 0.75μF
• An induction heating coil designed and developed specifically for this application.
Process A single turn helical coil is used to heat the assembly. The coil is placed around the pin and power is applied for 120 seconds. After heating, a steel rod is inserted in the pin ring, pressure is
applied and the pin ring spins freely.
Results/Benefits Induction heating provides:
• Precise and accurate placement of heat without affecting surrounding areas
• Much faster process time, from hours to minutes
• Repeatable and consistent results
• Even distribution of heating

Induction Hot Plate

High Frequency Induction Hot Plate with a Tin Coating for Flow-Melting

Objective Heat a carbon steel plate coated with tin to 450 ºF (232 ºC) for flow-melting
Material 7.9” (200mm) x 4.7” (120mm) steel plates with a tin layer of 100 to 1000nm thickness, temperature sensing paint, water for quenching
Temperature 450 ºF (232 ºC)
Frequency 350 kHz
Equipment • DW-UHF-20kW induction heating system, equipped with a remote workhead containing two 0.5μF capacitors for a total of 0.25μF
• An induction heating coil designed and developed specifically for this application.
Process A nine turn “Dog Bone” style coil is used for the flow-melting process. The tin coated carbon steel plate is placed in the coil for 1.34 seconds to uniformly reflow the tin coating. The plate is then quenched in cool water to retain sufficient free tin at the surface.
Results/Benefits Induction heating provides:
• Uniform heating
• Rapid focused heat

High Frequency Heating Steel Pipe

High Frequency Heating Steel Pipe With Induction Heating Equipment

Objective To heat a steel pipe to 1100ºF (593ºC) to transport melted magnesium
Material Steel pipe 14.5’ (4.42m) long with a 3.5” (88.9mm)OD
Temperature 1100ºF (593ºC)
Frequency 9 kHz
Equipment • DW-MF-160kW induction heating system, equipped with a remote workhead containing one 25μF capacitor.
• An induction heating coil designed and developed specifically for this application.
Process A specially designed double U channel coil the length of the pipe is used in this application. The pipe is placed inside the coil and power is supplied. The voltage is set and the power output is 100kW. As the part reaches the Currie point the power drops to 80kW and the voltage must be increased to achieve the 140kW. The pipe reaches 1100ºF (593ºC) in 20 minutes.
Results/Benefits Induction heating provides:
• Controllable and repeatable heat pattern that keeps
material in liquid form
• Environmentally friendly
• Even distribution of heating
• Movable workhead that can be located away from the power supply

Induction Heating Magnetic Iron Oxide

Induction Heating Magnetic Iron Oxide in water for hyperthermia application

Objective Heating magnetic iron oxide (Fe2O3) in water for hyperthermia application to determine the curve of temperature vs. time during induction heating
Material Magnetic iron oxide in water (magnetic field is 50-200kHz, 30kA/m), glass vial
Temperature Varies
Frequency 344 kHz
Equipment • DW-UHF-4.5kW induction heating system, equipped with a remote workhead containing two 0.33μF capacitors for a total of 0.66 μF
• An induction heating coil designed and developed specifically for this application.
Process A two turn helical coil is used to heat the glass vial. The temperature vs. time results are:
• 66º – 107 ºF (19º – 42 ºC) in 10 seconds
• 66º – 145 ºF (19º – 63 ºC) in 20 seconds
• 66º – 170 ºF (19º – 77 ºC) in 30 seconds
Results/Benefits Induction heating provides:
• Rapid & localized heating
• Uniform controllable heat
• Small bench top footprint
• Even distribution of heating

induction heating graphite susceptor

Induction heating graphite susceptor for glass reflow for X-ray tubes

Objective Heat graphite susceptor for glass reflow in the manufacturing of x-ray tubes
Material Glass disc 0.98 x 0.12 “ (25 x 3mm), graphite susceptor, stainless steel holder, Glass bell jar 5.9” (150mm) OD
Temperature 1742 ºF (950º C)
Frequency 80 kHz
Equipment • DW-HF-25kW induction heating system, equipped with a remote workhead containing eight 0.3 μF capacitors for a total of 2.4 μF
• An induction heating coil designed and developed specifically for this application.
Process A two turn helical coil is used for heating. Six graphite susceptors are placed in the nitrogen atmosphere with glass discs and a stainless steel holder. In 32 seconds the required temperature of 1742 ºF (950º C) is reached causing the glass to reflow & the stainless steel holder to melt through the glass.
Results/Benefits Induction heating provides:
• Increased production, customer currently heating 4 susceptors
• 50% lower energy consummation
• Even distribution of heating