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Walking Type Reheating Furnace1
Metallurgy MachineryHeating FurnaceIndustrial Furnace
Nanjing Nianda Furnace Science and Technology Co., Ltd.
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Product Description walking beam reheating furnace features and description of working process:It is mainly designed for heating of copper, copper alloy in controllable atmosphere before rolling. This production line adopts the most advanced and reliable atmosphere control technique. The whole working procedure can be automatically controlled; It saves investigation cost, with high thermal efficiency, reliable and safety operation.Installation level and Main Characteristics:To save energy, reduce heat loss, it adopts one end loading and the other end unloading method, furnace door will need not to be frequently opened during production.The proper and reliable hydraulic system ensures slab can be evenly and smoothly transferred in side of furnace chamber, no sliding and no scratch; The advanced positioning devices and aligning devices can make sure that slab can exactly positioned and delivered to rolling machine.High quality imported combustion device and perfect control system ensure temperature can be automatically controlled; The double-cross limit controller ensures air-gas ratio is automatically regulated, and atmosphere inside of furnace chamber is adjusted.Each heating zone can be individually controlled with help of analyzer and industrial PC. Inner atmosphere can be regulated as micro-reducing atmosphere, neutral atmosphere, and micro-oxidizing atmosphere.To meet requirement of small batch of workpieces to be suitable to heated in the furnace, working process can be modified or re-set at any time.The "soften loading" function ensures surface of slab remain in good condition.To improve surface quality of slab flow rate inside of furnace chamber can be regulated. Burner can be controlled automatically or remote manually controlled.The "stepping" function ensures slab can be uniformly heated.Proper history records function.The working process parameter and temperature curves are recorded and stored in the industrial PC.Slab numbers will be automatically calculated in the control system.Alarm history will be stored for operator analyzing and management.No.CodeSlab Size (mm) Annual productivity Pieces ( % )Annual Productivity (t)1 C10100C10200 230×620×8000 40 120,000 2C11000 230×620×8000 20 60,000 3 C19200 230×620×8000 20 60,000 4 C19400 230×620×800015 45,000 5 C70250230×620×80005 15,000 Total amount 100 300,000 Remarks: Copper slab with thickness 170~ 230mm , length 4800 ~ 8000mm can be heated in this walking beam furnace. No. Item Technical Data 1 Name of equipment Walking-beam re-heating furnace 2Name of Workpieces Copper slab and copper alloy slab 3Specification of Copper Slab 230mm × ( 400 ~ 650 ) mm× 8000mm ;230mm × ( 400 ~ 650 ) mm× 4800mm ;210mm × ( 400 ~ 650 ) mm× 7200mm( 230mm × 620mm × 6600mm ) 4 Production RateMaximum:60t/h 6pieces/h 5 Slab Temperature 800 ~ 1050 ± 5 6 Temperature of Furnace Chamber Maximum 1150 7 Fuel City Gas 8 Calorific Volume 3500 ~ 3800Kcal/Nm 3 9 Calculated Calorific Volume 3600Kcal/Nm 3 10 Pre-heated air temperature 250 -400 ( during normal working time ) 11 Thermal efficiency ≥60% 12Thermal Control Method Burner flame is remote, automatic, and continuously controlled. 13 Burner Type Flat Flame Burner + Long Flame Burner 14 Burner Numbers Total 55 pieces , heating section : 35pieces , soaking section 20 pieces. 15 Rated Combustion rate Maximum : 6000 Nm 3 /h 16 Chamber Dimension Width 9000× Height 1100(600)× Length 16800mm 17 Loading capacity Slab quantity:21pcs/batch×10t/piece=210t/ batch 18 Total Length of furnace body About 27.6meters 18 Feeding & discharging method Side feeding and side discharging 19 Loading Method Single Row, centralized in middle position 20 Stroke distance of Movable beam Upward move: 90mm ,Downward move: 80mm 21 Horizontal moving distance of movable beam 800mm or 400mm ×2 ( it shall be negotiated with buyer ) 22 Heat Exchanger Model Tube type ( direct cross and counter current ) 23 Heating Time About 3.5 hours 24 Temperature control Zones 9 zones Main technical parameter of feeding table: No. Item Parameter Small walking beam feeding table 1 Overall Size 7830×6000 2 Working Height 800mm 3 Fixed Frame Beam 5 pieces 4 Movable Frame Beam 4 pieces 5 Feeding Width of Over-head Crane 900mm 6 Maximum Lifting Height of Movable Beam 300mm 7 Maximum Horizontal Moving Distance 800mm 8 Motor Power of Hydraulic Pump 18.5Kw×(1+1) 9 Motor Power of Circulating Pump 5.5Kw 10 Horizontal Moving Cylinder φ100 -450mm 11 Lifting Cylinder φ140 -950mm Alignment Device (Centralizing Device ) 12 Cylinder Number 2 pieces 13 Cylinder Specification QGB-160×400 14 Working Pressure 0.5 ~ 0.7MPa Measurement Roller Table 15 Length of Roller Table 8330mm 16 Width of Roller Table (length of motor is not included) 1080mm 17 Working Height 1000mm 18 Driving Roller Number 8 Pieces 19 Driven Roller number 9 pieces 20 Motor Power of Roller Conveyor 2.2Kw Front Roller Table 21 Length of Roller Table 1830mm 22 Width of Roller Table (Motor length is not included 1080mm 23 Working Height 1000mm 24 Driving Roller Number 2 25 Driven Roller Number 2 26 Motor Power of Roller Conveyor 2.2Kw
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