Beijing Holland Trading Co., LTD
Beijing Holland Trading Co., LTD Professional machine manufacturer from CHINA
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Bell-Type Furnace Copper Annealing Furnace Annealing Furnace For Copper Strip
Technical Specifications of High Convection Bell-Type Bright Annealing Furnace
Main parameters
1, Name:RBG-1400-3500 annealing furnace for copper strip
2, Quantity:one set.
3, Main parameters
|
NO. |
ITEM |
PARAMETER |
REMARK |
|
1 |
Loading diameter |
Φ1400mm |
Inside coverФ1600mm |
|
2 |
Loading height |
3500mm |
|
|
3 |
Maximum temperature of heating cover |
850℃ |
Can be adjusted |
|
4 |
Inside cover working temperature |
200－750℃ |
Can be adjusted |
|
5 |
Loading capacity |
24t |
4 coils for Ф700mm |
|
6 |
Hygrometric deficit |
≤±5℃ |
|
|
7 |
Heating power |
380kw+10% |
|
|
8 |
Furnace outer wall temperature |
≤35℃ |
|
|
9 |
Inside pressure |
5kpa |
|
|
10 |
Ultimate vacuum |
1×103pa |
|
|
11 |
Heating fan power |
45kw |
10-60Hz |
|
12 |
Heating fan rotating speed |
Maximum 1800rpm |
Can be adjusted |
|
13 |
Fan blade |
Φ900mm |
|
|
14 |
Heating speed |
Maximum 120℃/h |
|
|
15 |
Input air |
56000m3/h |
|
|
16 |
Air pressure |
2100Pa |
|
|
17 |
Noise |
≤85db |
|
|
18 |
Cooling fan power |
1.5Kw×3 |
|
|
19 |
Cooling fan blade |
Φ500mm |
|
|
20 |
Lifting height |
≥10.8m |
|
|
21 |
Crane loading |
≥10T |
|
4, Protecting air requirement
|
NO |
Item |
parameter |
Remark |
|
1 |
Air content |
H2:75%；N2:25% |
For brass and bronze |
|
N2；H2:1-3%, N2=97-99%； |
For copper |
||
|
2 |
Air quality |
O2≤1PPm； NH3≤3PPm；H2O≤-70℃D.P |
|
|
3 |
The consumption of protecting air |
12-15Nm3/h.； P=5-8KPa |
|
|
4 |
Furnace cleaning air |
N2 |
|
|
5 |
Cleaning air consumption |
20m3 every furnace, each furnace need to be washed twice |
|
5, The requirement for water and electricity:
|
No |
Item |
Parameter |
Remark |
|
1 |
Demineralized |
5-8m3/h.； P=0.2-0.3Mpa |
Suspended substance 10kg/L；PH7-8；entrance temperature≤32℃；water need to be supplied continuously |
|
2 |
Spray water |
12-15m3/h.cooling furnace； P=0.2-0.3Mpa |
Filter precision 0.6mm , entrance temperature≤32℃ |
|
3 |
Power supply |
520kw for one furnace |
3 phase 380V±5%；50HZ±2% |
|
4 |
Controlling power |
2kw |
220V±5%；50HZ±2% |
|
5 |
Air to control the meter |
N2 or cleaned compressed air, 2Nm3/h, P=0.4MPa |
Interrupted using |
6, Consumption
|
No |
Item |
Consumption |
Remark |
|
1 |
Spray water |
|
Can be recycled |
|
2 |
Demineralized water |
|
Can be recycled |
|
3 |
Compressed air |
0.5Nm3/h |
|
|
4 |
Ammonia decomposition |
12-15Nm3/h |
For brass and bronze |
|
5 |
Nitrogen |
12-15Nm3/h |
For copper |
|
6 |
Electricity |
Brass and copper 105kwh/t±10% |
Recrystallize annealing |
|
Bronze 180kwh/t±10% |
Homogenizing annealing |
||
|
7 |
Lubricating oil |
|
Refresh regularly |
|
8 |
Hydraulic oil |
|
Refresh regularly |
|
9 |
Vacuum pump oil |
|
Refresh regularly |
Line description
1, Heating cover:
The heating cover is made by Q235A plate and steel profile, δ＝5mm.Heating unit is Ni80Cr20 strip. The outer wall temperature in no more than 35℃.
The heating cover includes leading device, supporting device, lifting and loading device.
2, Cooling cover:
Cooling cover is made by stainless steel, δ＝3mm.There are 3 cooling fans, the power is 1.5kw, rotating speed is 1500r/min.The water cooling and air cooling are used to keep the cooling quality.
The cooling cover includes leading device, supporting device, lifting and loading device.
3, Inside cover:
Made by SUS321, thickness is δ＝6mm, the air tightness is 0.2Mpa/h.
4, Furnace base:
The loading weight of the furnace base is 35T, loading coil weight is 24T, the guiding plate and the guiding blade is made by stainless steel 321, the thickness of guiding plate is 8mm, there are 18 guiding blades, 6 of them are of the thickness 16mm；the other 12 blades are of the thickness of 8mm；the spread plate is made by stainless steel 321, the thickness is 8mm, the coil loading plate is made by stainless steel 304, δ=30mm.
There is a Φ40mm silicon rubber between the base and the inside cover to ensure the air tightness.
The power of heating fan is 45kw.The fan blade is made by SUS310, the brand of main axletree is Sweden SKF.2 thermocouples are set in the inside cover through the furnace base to
control the temperature in the furnace.
The furnace base and the inside cover using automatically hydraulic locking.
The furnace base includes constant pressure valve, oil-water filtering device and the heating furnace supporting device.
5, The valve supporter in front of the furnace
The vacuum pumping piping and the exhaust gas piping are set in the furnace valve station, there are also pipes to send nitrogen to clean the furnace, pipes to input protecting air and the demineralized water and the spraying water input pipes. The cooling water pipes
are set with flow valve, when the flow lower than 2.5M3/h, it will give alarm.
The valve station and the PLC connected with each other, the vacuum pumping system can check the air tightness before heating and before unloading the coil from the furnace.
The pressure in the furnace can be tested and displayed by the pressure control instruments. The pressure is 40—70mbar(can be adjusted), when the pressure is out of the normal range, there will be an alarm.
6, Vacuum pumping system
Made by vacuum pump, vacuum valve and the manually-operated valve.
7, The hydraulic locking system
When the hydraulic pump activated, the direction changing valve will open, then the rotating hydraulic cylinder force down. When the pressure reached the set figure, the hydraulic pump will automatically stop working.
8, Coil loading device
There are 6 loading and guiding device, made by SUS304, set with 36support pillars.
9, Standard accessories:
Guiding pillars 4, made by Φ133×6mmA3 steel pipe.
Chain spreader in the inside furnace 1
Chain spreader for loading the coil 1
10, Electricity connection device
1 set in the heating cover
2 sets under the furnace base；
11, Electric controlling system
The description of the whole process
Manually operating loading------inside cover on------automatically locking------vacuum pumping------reach the vacuum requirement------air tightness measurement--------input the safety air------reach the set pressure------input the protecting air and pump the exhaust air--------heating cover on------heating------recycling fan motor activate------adjust the fan rotating speed-----reach the heating temperature------holding temperature time measuring-----holding time is up------the whole heating process ends---- give the cooling alarm------cooling cover on------cooling fan activate------reach the set temperature------the recycling fan stops, cooling fan keeps working------reach the water cooling temperature------cooling fan stops, water cooling begins------after 120 seconds, the recycling fan begins to work ------adjust the fan rotating speed-------reach the unloading temperature------all the fans stop------give alarm to remove the cooling cover------vacuum pumping-------vacuum pumping finish------input the safety air-------reach the set pressure------loose the locking device------remove the inside cover-------unloading------next round process