Heat treatments

Coil annealing treatment

O.R.I. Martin is fitted with annealing ovens for rolls and bars.

Rolls

  • 8 bell furnaces in a nitrogen atmosphere.
  • 1 continuous furnace in a nitrogen atmosphere. 

 

Bars

  • 1 furnace in a nitrogen atmosphere. 

 

Furnace-proof bars max length 12,000 mm

Annual capacity: 130,000 ton

Length: 
12000 mm max

Ori Martin Spa

via Cosimo Canovetti, 13
25128 Brescia BS
Italy
Phone: +39 030 39991/2/3
Fax Number: +39 030 2000924

Franchi Alberto
Italy
Phone: +39 030 3999 205
Fax Number: +39 030 2000924

Tel +39 030 3999 205
Fax +39 030 2000924
alberto.franchi@orimartin.it
Petroboni Alberto
Italy
Phone: +39 030 39991
Fax Number: +39 030 2000924

Tel +39 030 3999 272
Fax +39 030 2000924
alberto.petroboni@orimartin.it
Lombardi Alessandro
Italy
Phone: +39 030 3999214
Fax Number: +39 030 2000924

Tel +39 030 3999 214
Fax +39 030 2000924
alessandro.lombardi@orimartin.it

Annealing in hood

The hood annealing furnaces consist of a double shell between which combustion of methane and oxygen occurs, while the heat radiates through the inner hood where the coils are immersed in a nitrogen-rich atmosphere. In the absence of oxygen, the atmosphere does not allow for combustion of the steel's surface.

Continuous annealing

The continuous coil annealing treatment functions like a tunnel system in which the coil moves along a path where the cycle is carried out. The nitrogen (N) atmosphere prevents surface decarburisation of the steel.

Bar annealing furnace

The bar bundles positioned on the loading surface are introduced into the annealing oven and subjected to the relevant cycle. Once the cycle is completed, they leave the oven from the opposite side and new bundles are introduced. The nitrogen atmosphere prevents surface decarburisation of the steel.

Treatments