Design, Manufacture and Installation of Steel Strip Annealing Line

Aaran Steel & Equipment

                                                                              


The First Steel Strip Continuous Annealing Line

In this project, design of annealing line has been done with the aim of improving mechanical properties of cold rolled line product, in which Aaran Steel & Equipment company is responsible for process design, basic and detailed design of equipment, manufacture and installation of steel strip continuous annealing line.

This line utilizes two payoff reels and a overlap welding equipment to ensure continuous annealing operation. In the horizontal furnace, direct flame burner technology is used. The nominal capacity of the designed continuous annealing line is 200,000 tons per year and the maximum width of annealed strip is equal to 1250 mm.


In this project Aaran Steel & Equipment Co. performed process design including following items:
  • Design of equipment layout
  • Calculation and determination of strip tension at different sections of the line
  • Preparing furnace temperature diagram including the maximum strip temperature, soaking time and cooling rate

In the next step, Aaran Steel & Equipment Co. did the basic and detailed design of mechanical equipment including entry payoff reel, exit tension reel, coil car and etc.

For the furnace, Aaran Steel & Equipment Co. was in charge of basic and detailed design including items listed below:

  • Structural design
  • Calculation and selection of burners capacity
  • Combustion system design
  • Piping design
  • Air preheating system calculation and design
  • Insulation and refractory design

Regarding electrical and automation of the line , Aaran Steel & Equipment Co. was responsible for selection the drives and PLCs, programming, designing electrical cabinets and cabling routes.

Regarding hydraulic system, following  items has been done by Aaran Steel & Equipment Co.:

  • Selecting and sizing pumps
  • Powerpack design
  • Valve stands design

Qualitative supervision on equipment manufacturing over the construction of equipment , installation and set up of the line  are other services that Aaran Steel & Equipment Co. was in charge of. In addition, in a separate contract, design of foundation was also done by Aaran Steel & Equipment Co. 

This project has been implemented for Sadra Profile Tehran company which is in final stages of installation.