Vacuum induction furnace melting crucible enclosed in a vacuum chamber, eddy current electrical energy converted into heat generated by electromagnetic induction. Metal smelting and casting ingot, resulting in melting equipment of high quality materials under vacuum. Mainly used for high temperature alloy, precision alloy, rare earth materials, and other special refractory metal smelting, general crucible at temperatures up to 1700 ° C. Such as graphite for crucible temperature up to 2500 degrees. Vacuum induction melting furnace by the furnace (rotating electrode and the induction coil), lid (alloy boxes and observation window), into the electrical device, sampling devices, temperature measurement devices, pound feeding device, circulating water cooling unit, vacuum system, constitute the electrical control system and SCR frequency power supply. The furnace can be used horizontal or vertical structure, easy maintenance, the use of flexible features. Multiple temperature measurement, sampling, trace material, supplementary feeding and alloying elements to adjust the alloy composition in the metallurgical process does not destroy the vacuum furnace room. Filled with inert gas to the furnace to control the pressure and atmosphere of the furnace by the smelting process, in order to ensure the stability of liquid steel melting and casting process does not splash.

The main technical indicators:
Rated capacity 250Kg

IF Power 250KW

The max temperature of 2500 degree (Depends on the crucible material)
Work temperature: 1650 degree

Temperature measurement methods termocouple and Infrared thermometer

Temperature control accuracy ± 10 degree

Ultimate vacuum 0.005mmof mercury

Work vacuum: 0.1 mmof mercury.-1000 mmof mercury

The leakage rate less than0.0225 mmof mercury per hour

Vacuum pump configuration: mechanical vacuum pump + Roots pump

Melting rate: 380Kgper hour

The protect gas : (nitrogen, argon or helium)
Mains supply voltage 380V
Input Phase: 3 phase
Input Power Frequency: 50Hz
Input IF voltage: 375V
IF output frequency: 1000Tto4000Hz

Equipment Specifications the length4500mm, the wide4000mm,the high3500mm

Cooling water capacity: 20t / h

Input water temperature less than 55 degree

Out water temperature 5 degree to35 degree

Water pressure 0.2-0.3MPa;
Vacuum system configuration: One set of ZJP-1200 Roots pumps, two sets of H-150 rotary vane pump, the DDC-the JQ80 type electromagnetic vacuum belt inflatable valve, high vacuum baffle valve, vacuum hose and rubber seals, etc.

250 Kgvacuum induction melt furnaces Configuration compositionⅰ、Vacuum furnace part

304Stainless steel furnace shell

Furnace cover and transmission device

Side open furnace door

Alloy charging device

Temperature measurement device

Sampling device

Rotary piston pump

ROM Bates pump

Oil mudline booster pump

Nitrogen atmosphere control system

Hydraulic system

Pneumatic system

A side door and transmission device

Busbar row and into electrical devices

Water-cooling electrode and derivation device

Closed cooling equipment

Working platform

Crucible mould

Mould fixtures

The shunt

ⅱ、Electric part

SCR m-frequency power KGPS - 250-1

Capacitor ark, the isolated transformer

Electric controlling part

PWS touch screen

PLC program-controlled device

Encoders and counter

Instrument ark

PLC Automatization requirements

ⅲ、Spare parts:

Vacuum sealed with rubber pieces

Oil cylinder seal with rubber pieces

Glass for observation window

SCR KK tube core

Rectifier trigger board

Inverter trigger board

Regulating protection board

ⅳ、Users need to provide equipment

Closed cooling equipment

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