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TENOVA

PLANT DATA – HEAT TREATMENT

Maximum temperature: 950 °C

Clear width: 2,200 mm
Usable width: 2,070 mm
Usable height: 400 mm
Working height: 1,300 mm
Entry roller conveyor: 14,700 mm
Entry chamber: 2,500 mm
Annealing furnace: 29,169 mm
(Annealing furnace clear length): approx. 26,769 mm
Cooling section (HT and LT): 51,000 mm
Exit chamber: 2,500 mm
Exit roller conveyor: 14,660 mm
Total length: 114,530 mm
System volume: XXX m³ (annealing furnace and cooling section)
N2 purge gas volume: 420 m³
Furnace type: Roller hearth continuous furnace
Material processed: Pipes
Outer diameter: 14 – 180 mm
Wall thickness: 0.8 – 8.0 mm
Length: 4.0 – 13.0 m
Surface prior to annealing: -

Throughput at 920 °C workpiece temperature and full furnace utilization: 7,000 kg/h (without soaking time)
Bwedpfxoxr Uage Ablew
Throughput at 700 °C workpiece temperature and full furnace utilization: xxxxx kg/h (without soaking time)
Reference pipes:
25 x 2.5 x 8,000 mm
33 x 3.5 x 8,000 mm
40 x 3.5 x 8,000 mm
55 x 2.8 x 8,000 mm
63 x 4 x 8,000 mm
75 x 6 x 8,000 mm
110 x 8 x 8,000 mm
Pipe exit temperature (depending on pipe surface): 125 – 150 °C
Roller pitch, entry roller conveyor: 620 mm
Roller pitch, entry chamber: 620 mm
Roller pitch, annealing furnace: approx. 430 mm
Roller pitch, cooling section: 500 mm
Roller pitch, exit chamber: 620 mm
Roller pitch, exit roller conveyor: 620 mm
Roller dimensions:
Annealing furnace: 155.4 x 14 mm 1.4848/1.4832 (material grade)
Front section, HD cooling section: 157.0 x 10 mm 1.4826 (7 pcs)
Remaining cooling section: 133.0 x 4 mm St 37
Maximum permissible roller hearth load at 920 °C and uniform bed loading: 350 kg/m
Furnace floor: Lightweight fireclay brick: 130 mm
Insulation bricks: 130 mm
Mineral fiber board: 50 mm
Side wall: Lightweight fireclay bricks: 230 mm
Mineral fiber board: 100 mm
Ceiling: Suspended ceiling bricks and ceramic wool: 330 mm ceiling thickness
Ring stones for roller penetrations made from fiber material
Number of control zones: 6 (gas heated)
Operation of control zones:
- (gas heated) ON/OFF, with all-around control
- (electric heated) ON/OFF, with thyristor control
Thermocouples: NiCr-Ni
Measurement range for temperature recording: 0 – 1,000 °C
Measurement range for temperature control: 0 – 999 °C
Operating temperature range: 450 – 950 °C
Maximum operating temperature: 950 °C
Conveying speed: 7.5 – 150 m/h

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