High-Temperature pit Electric Furnace

RJ2 series of high temperature pit furnace is the national standarded energy-saving cycle operations pit furnace, the temperature of 1200℃ rated, mainly for steel, high-speed steel, high manganese steel, high chrome steel, Shaft, pipes and other metal materials and machinery parts in the general atmosphere or simple protection for normalizing, annealing, with heat treatment, such as quenching. Power 15-4900KW; Furnace diameter is ￠300mm-￠11m, the largest to reach 48m depth.

Structure description:
RJ2 series of high temperature pit furance structure, the shell are welded by steel plate and steel cylindrical furnace, all of them are used in all enclosed welding. Lining using ultra-light 0.6g/cm3 energy-saving vacuum insulation ball refractory brick building. Lining home with the furnace shell laminated aluminum mat acid insulation, insulation powder expansive space filled. Resistance silk used 0Cr27Al7Mo2 high resistance alloy wire around the spire installed in the furnace of dormant Wire and Bricks. Lid using manual or electric movements. If users need to protect the atmosphere workpiece reduce oxidation, can be installed in a stainless steel lid three Pentanes injection, infusion methanol or kerosene, to produce simple protective atmosphere, in the lower part of the furnace installation of nitrogen gas pipeline, nitrogen-protection or washed out into the flammable gas to prevent an explosion accident. To ensure safe operation in the vicinity of lifting bodies with limit switch, the switch with the high temperature resistance furnace control cabinet Well Interlocking power, lid-power shutdown. When the lid is opened time-switch control to cut off power supply, heating elements at the same time cutting off the power supply to ensure safe operation. Well-type high temperature resistance furnace factory supporting automatic temperature control cabinet, thermocouple.

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Technical parameters:

Parameters Name Unit Model
RJ2-20-12 RJ2-45-12 RJ2-50-12 RJ2-60-12 RJ2-75-12 RJ2-80-12 RJ2-80-12
Rating Power KW 20 45 50 60 75 80 80
Rating Voltage V 380 380 380 380 380 380 380
Highest Temperature ℃ 1200 1200 1200 1200 1200 1200 1200
Working Temperature ℃ 1200 1200 1200 1200 1200 1200 1200
Phase Number 3 3 3 3 3 3 3
Hearth
size Dia. mm Φ300 Φ600 Φ600 Φ800 Φ600 Φ800 Φ800
Height mm 700 600 800 800 1600 1000 1600
heating saction 1 1 1 1 2 1 2
heating element 串 Y Y Y YY YY YY
heating-up time h ≤2.5 ≤2.5 ≤2.5 ≤3 ≤2.5 ≤3 ≤3.5
lose power KW ≤8 ≤18 ≤20 ≤24 ≤22 ≤17 ≤32
control accuracy ℃ ±1 ±1 ±1 ±1 ±1 ±1 ±1
niformity ℃ ±5-8 ±5-8 ±5-8 ±5-8 ±5-8 ±5-8 ±5-8
Maximum Loading Kg 150 350 350 500 700 800 1200
Weight Kg 1600 2100 2400 3000 4000 3200 4800