Bach annealing line

Cold Rolling of strips causes non homogeneous variation in metallurgical characteristic of steel. For tempering process, coils shall go to heat treatment line.

The annealing plant which can use a high concentration of H2 gas operates the most improved system in the world which reduces the heat treatment duration while improving the product quality.

Annealing process consists of 10 stages as below:

1- Making the Charge

2- Set Inner Cover

3-Cold Leakage test

4- Nitrogen purge

5- Hydrogen Purge

6- Heating

7- Hot Leakage test

8- Cooling

9- Hydrogen Discharge

10- Final Cooling

  • Work base

The work-base is designed to support up to 128 t gross weight of cold rolled steel strip coils and intermediate convector plates.

  • Inner Cover

The inner cover has to separate the charge from the combustion chamber and to transfer the energy of the flue gas into the hydrogen atmosphere.

  • Intermediate Convector Plates

The convector plates are designed to optimize gas flow between the coils and thus to achieve shortest possible heating and cooling times.

  • 3-Arm Grip Tong

For shifting inner covers and convector plates round

  • Heating Bell

The heating bell is designed to heat up the steel strip coils within the shortest possible time to achieve the required quality of the annealed product.

  • Cooling Bell

The air-mass flow / water spray cooling bell is designed to cool the charge at the beginning with 2 radial blowers down to a certain temperature below 380°C before the water spray cooling starts.

  • Valve Stand

It is the duty of the valve stand to supply all necessary utilities to the work base and to provide the basic information about the utility consumption.

  • Hydraulic Power Unit
  • N2/H2 Pressure Reduce Station

To control the Nitrogen and Hydrogen flow rate during heat treatment.

In fact Full-hard coils coming out of the cold rolling mills or Electrolytic Cleaning Line are taken into heat treatment and regain their original mechanical characteristics. All the stress is removed during this process and there may be some deformations on the strip. In order to remove these deformations, the annealed coils are processed at the Skin pass mill.

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Who we are?

It is undeniable that Iran’s future economic progress will have to be based on two fundamental principles, namely a greater role for the private sector, and the expansion and diversification of trade relations, there are the basic premises on which FOOLAD GHARB ASIA CO., was established. Its shareholders range from large private sector manufactures, construction and engineering firms, investments company’s trade agencies. FOOLAD GHARB ASIA CO., members have developed the techniques and posses the experience to provide e customers in the steel sector. Production line equipment was experience in engineering, manufacturing and commissioning of similar plants throughout the world. The capacity foreseen for the complex with particular mix defined is 550,000 t/y. more than 80% of this capacity have been allocated to car and home applications industry.

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