Tenova Loi roller hearth annealing furnace, inlet roller table, inlet suction device

SPECIFICATIONS
All grades for the following:
API 5CT tubings, casings, couplings
API 5DP drill pipes
API 5L line pipes
ASTM-A 213
ASTMA-A 519
CAPACITY
Total heat treatment: approx. 30,000 t/year
Capacity Operating time: 21 shifts/week
FURNACE LINE COMPONENTS
Inlet Roller Table
Inlet Suction Device
Inlet Tunnel with 6 curtains made of spring steel strips
Furnace Casing
Refractory Lining
Heating System
Furnace, 8 Zones
Radiant tubes,58, 10 of them with Cooling Air Connection in Zone 4
70 Furnace Rollers with flange bearings and chain wheels
Group drives: inlet roller table, inlet tunnel, annealing furnace, cooling
section, outlet tunnel, outlet roller table
Protective Gas Supply
Water Basin, 2 Meters
Cooling Section : 10 x 6 m = 60,0 m long
Cooling Water Piping Cooling Tunnel
Outlet Tunnel with 4 Curtains
Outlet Roller Table
Outlet Suction Device
Measuring and Control System
Cross Conveyor Device to charge the inlet roller table
Cross Conveyor Device to discharge the outlet roller table
PLANT DIMENSIONS
Useable width: 2,000 mm
Useable height: 300 mm
Operation height: 1,250 mm
Inlet Roller Table: Approx. 17,880 mm
Inlet Box: 3,740 mm
Annealing Furnace: 30,000 mm
Cooling Section: 64,625 mm
Outlet Box: 2,500 mm
Outlet Roller table: approx. 17,660 mm
Total Length: 135,400 mm
FURNACE DATA
Furnace type: RoDR 6500
Furnace Design: Continuous Roller Hearth Furnace
THROUGHPUT AT AN ANNEALING TEMPERATURE 920 DEGREES C OF ire Furnace
CAPACITY: 6.500 kg/h (without holding time)
Max. admissible roller hearth charging at an operation temperature of 980 C
and uniform hearth charging: 600 kg/m
Number of control zones: 8 (gas-heated)
Operation of control zones: 8 (gas-heated) ON/OFF with round-robin control
Burner in zone 4 is equipped with cooling air connection so that the
respective radiant tube can be used as cooling tube.
Thermocouples: NiCr-Ni 2 per zone
Measuring range of temperature recording: 0 - 1.200 C
Measuring range of temperature control: 0 - 1.200 C
Range of operation temperature: 400 - 980 C
Max. operation temperature: 980 C
Furnace speed: 3 - 150 m/h