MFG-model

tmax up to 0 °C

Medium frequency generator, 10kW - 1MW, 5 - 100 kHz

Applications:

activation, casting, crystal growing, CVD chemical vapour deposition, directional solidification, forging, gemstone heat treatment, glueing, graphitization/carbonisation, hardening, heat treatment, levitation melting, melting, pre-heating, pulling, remelting, sample preparation for spectroscopy, shrink fitting, soldering, stress-relieving, surface coating, tempering

Most important characteristics

For heating of electrically conductive materials, hardening, annealing, soldering and brazing, welding, glueing, heating of forged parts, melting, preheating and heating of suszeptors (graphite, SiC etc.)

Especially suited to heat high conductive material (steel, Al, Cu, Ag etc.) as well as other non-magnetic metals.
Medium frequency industrial inverter
MF-output power ranges standard series up to 400 kW, up to 1 MW on request
Siemens S7-300 PLC with touch screen
High energy efficiency
High reproducibility of the heating process
Environment friendly
Easy to handle

We make it possible

Linn High Therm is specialized in customizing its products to customer´s needs. Please let us know if you require any modifications.

Options

Additional output adapter

Induction coil according to client requirements
Temperature control with pyrometer
Safety temperature control with pyrometer
Cooling water recirculation unit
Different vacuum systems
Gas purging system

Product Specifications

Sizes

Type	MFG-10	MFG-20	MFG-30	MFG-50	MFG-80	MFG-100
MF-Output power (kW)	10	20	30	50	80	100
Operating frequency, optimal range (kHz)	10 - 100	8 - 100	8 - 100	8 - 80	5 - 70	3 - 70
Mains supply	3x400 V/50 Hz 12 kVA	3x400 V/50 Hz 24 kVA	3x400 V/50 Hz 36 kVA	3x400 V/50 Hz 60 kVA	3x400 V/50 Hz 96 kVA	3x400 V/50 Hz 120 kVA
Cooling water (4-6 bar)	10 l/min	15 l/min	20 l/min	30 l/min	50 l/min	60 l/min
MF part dimensions (w x h x d) (mm)	280x250x550	280x250x550	280x250x550	280x250x550	280x250x550	280x250x550
Control unit dimensions ^) (w x h x d) (mm) ) Compact unit has same dimensions	520x1350x530	600x1900x500	600x1900x500	600x1900x500	800x1900x500	800x1900x500
Weight control part /output adapter in kg	60/5-20	120/10-30	130/10-30	180/20-50	260/25-60	300/30-70
Compact unit in kg	65-80	130-150	140-160	200-250	285-320	330-370

Technical details

Display elements (LCD display)

Actual working power

Working frequency
DC current
Heating time
Fault indication
Cooling water overtemperature
Low cooling water flow

Control elements

Main power switch

START and STOP button
Operational panel of the PLC Simatic S7
RESET button

Security functions

Cooling water flow protection

Cooling water temperature protection
Overload switch OFF – DC and MF current
frequency limitation

Mains supply

The mains supply is realized over three fast semiconductor fuses.

Rectifier part

The rectifier consists of one three phase diode bridge, smoothing elements and one DC overcurrent limit circuit.

Converter part

The converter part consists of the oscillator capacitors, IGBT modules, MF output connection and the control. The oscillator capacitors and the oscillator transformer are mounted in the separate adaptor frame and connected with the generator by the special flexible MF cable and cooling water pipes with the maximal length of 4 m. Upon the special customer request it is possible to integrate the output part in the generator frame.

Control

The generator is completely controlled by the system Simatic S7 with touch screen. The operational panel is used for entering the working parameters and by that to control the equipment. Via the corresponding connector it is possible to operate the generator from remote devices. The important working data as well as the eventual faults will be displayed on the LCD display of the operational panel. As a special option we can offer the converter with two different working frequencies for the alternative work.

Product properties

Product Line:	type series
Operation Mode:	Batch and Continuous
Construction Types:	Generator
Designs:	Crucible furnace, Fusion unit, Laboratory furnace, Remelting unit
Temperature Max (°C):
Heatings:	electrical
Heatingmethods:	induction
Atmospheres:	Air, Controlled gas atmosphere, Overpressure, Vacuum
Applications:	activation, casting, crystal growing, CVD chemical vapour deposition, directional solidification, forging, gemstone heat treatment, glueing, graphitization/carbonisation, hardening, heat treatment, levitation melting, melting, pre-heating, pulling, remelting, sample preparation for spectroscopy, shrink fitting, soldering, stress-relieving, surface coating, tempering

Products- Details