Annealing Furnace/Annealing Line/Annealing Equipment for Cold Rolling Mill Batch

Hebei Moran Environmental Protection Technology.,Ltd is one of main metallurgical equipment factory in China. our products include steel and aluminum rolling mill,2hi 4hi 6hi 8hi to 20 hi rolling mill machine, skin pass mil, tension leverler, tension leverler and skin pass mix mill, caster, steel coating line, pickling line ,annealing furnance,grinder, and other related equipment and its parts.our machine has been exported to many country and enjoy a very good reputation among our users.





Batch annealing furnace(BAF)

Technology program
 

Equipment technical parameters and requirements
 

1) The main process parameters

Annealing material:	Plain carbon steel
Product Specifications:	Steel coil diameter ≤ 2100mm;
Bakeout temperature:	80~100°C;
Annual production capacity of each group:	about 15000T (calculated at 6,500 hours per year)

 

2) The main design parameters

Moran Tech 10 units electric heating batch annealing furnaces

Cover table ratio:	1:2;
Heating hood maximum working temperature:	850°C
Inner cover working temperature:	<750°C
Furnace gas temperature uniformity:	≤±5°C;
Instrument Temperature Control Accuracy:	±3°C
Heating Power:	900~1000 Kw
Working voltage:	380V;
effective loading diameter:	Φ2100mm
inner cover inner diameter:	Φ2300mm
effective loading height:	5650mm
stacking mode:	single stacking
Maximum Working Pressure:	<5KPa
Cooling Method:	Air Cooling, Water Cooling
Protective Gas:	Ammonia Decomposition Gas

 

3. Equipment parts

1)  Electric heating cover

Steel Structure:	Using Q235-A, the steel plate is welded to the steel section, and the bottom inner ring is made of stainless steel ring to ensure that the steel structure is not deformed.
Furnace lining:	It adopts light refractory brick and aluminum silicate blanket compound heat preservation furnace lining, which has good heat preservation effect, low surface temperature rise of furnace shell, and temperature rise ≤ 45°C.
Heating element:	The heating element is made of high temperature resistance alloy Cr20Ni80 which has a long service life under high temperature. The power connector adopts a plug-in type copper plug. When the heating cover is used, the copper contact is automatically butted. When the heating cover is lifted off, the plug cover automatically closes. , ensure safety, heating power 900 ~1000Kw.

 

2)  Cooling Cover:
The entire steel structure is simplified and made of carbon steel plate, reinforced with stiffeners, and adopts jet air cooling and jet water cooling. There are two cooling fans at the bottom of the cooling cover and a jet plate at the top. When the cooling fan starts, cold air enters from the lower part and is discharged at the upper part.
 

3) Corrugated inner cover:

Moran Tech 10 units electric heating batch annealing furnaces Simplified to use 10mm thick 321 heat-resistant stainless steel,
Simplified with a roller press machine into a corrugated shape, which increases the simplified strength and increase the heat transfer area, wave pitch 150mm, wave depth, head spin forming, longitudinal seam Both sides of the ring seam are precision welded. The flange is a carbon steel plate 40mm thick, and the flange and bottom ring can be tightly sealed after welding.

4) Furnace table:
The hearth is the core part of the hearth furnace. In the production, we adopt a fully sealed steel structure, which mainly consists of a
circulating fan, a fan blade, a furnace block body, a fluid-conducting fluid, and a receiving plate. The structure of the hearth is more
reasonable. With more standardized materials, safer use, superior performance, and longer life.

The circulating fan adopts 55/11Kw-4/8 grade, and the motor shaft and fan blades are made of heat-resistant stainless steel. Material:

OCr25Ni20Si2 Japan NSK bearing, motor shaft and fan blades need dynamic balance to ensure interchangeability.
Guarantee long-term trouble-free operation. The base of the hearth is welded by I-beams and steel plates. The flange on the top of the chassis is made of 40-thick mid-plates. The flanges are covered with dovetail-shaped silicone rods. The water-cooled grooves are welded on the flanges. There is a circulation fan under the chassis. The mounting base, after welding the entire chassis, strictly guarantees the vertical and horizontal lines of the two planes. The deflector plate is not welded to the furnace bottom body so as to facilitate the repair of the deflector plate. Two thermocouples are set on the furnace seat to control the material temperature in the inner cover area. The inner cover has two points to measure the temperature, one record and one temperature

 

5) Valve holder:
It is composed of flow meter, vacuum pressure gauge, pressure control instrument and so on to realize the operation and control of
the evacuation of the pedestal, the protection of the gas, and the exhaust gas deflation.

6) Temperature Control and Electronic Control System:
Electronic control microcomputer PLC as the main control component, through the 485 communication temperature control

Moran Tech 10 units electric heating batch annealing furnaces module, high-speed operation of the furnace temperature real-time
monitoring, control accuracy of ± 3 °C; comprehensive accuracy of 0.8% (relative maximum). Through the local network connection, it can provide the trend display of the furnace and the real-time temperature printout in the furnace. The temperature heating unit
adopts a three-phase cycle power regulator, and the load current is relatively balanced when multiple devices are running. It improves the adjustment accuracy and power supply utilization, and avoids the increase in the playing capacity of the hands and power equipment. The node effect is very obvious. During normal operation, the microcomputer not only monitors the real-time data, but also monitors the status of each bit in real time. Once a fault occurs in the bit status, the system generates an alarm and is displayed in the "Diagnostics" menu to help you locate the fault and repair it in time. Furnace temperature can be automatically controlled at any temperature point and the entire annealing process.

 

Our Advantage: 
1. we can customize the machine according to the customers' requirements
2. the most cost effective price
3. timely and attentive technical support covering the factory design, machine design, model selection, installation & commissioning, and stuff training 
4. The revamping and upgrading service of the used machine can also be offered.