Heat treatment of steel
From heat treatment of forgings, steel and metallurgical material we provide annealing and refining of all grades and types of steel - carbon steel, alloy steel, tool steel etc.
Annealing
From types of annealing we provide especially these:
- normalizing
- soft annealing
- isothermal annealing
- annealing on ferrite-pearlite
- stress relief annealing
- and other types of annealing according to customer request
We carry out the steel annealing process with two installed technologies:
- annealing in car-hearth furnaces
- annealing in continuous annealing furnace
| Basic technical data about car-hearth furnaces | |
| Working space | |
| length | 4 500 mm |
| width | 3 300 mm |
| height | 2 771 mm |
| max. weight of batch | 20 t |
| Basic technical data about continuous annealing furnace |
|
| Working space | |
| length | 23 000 mm |
| width | 1 000 mm |
Maximum size of annealed material is given by dimensions of working space of the furnaces. All furnaces are computer controlled so we are able to supply every customer with thermal curve of annealing with every batch of heat treatment
Refining (hardening and tempering)
Currently we are using two hardening shops for this type of heat treatment.
Hardening shop I.
First hardening line is for all types of steel, while the regulation of temperature mode of steel treatment is controlled in automatic process.
Basic technical data of the machinery:
| Chamber electric furnace AICHELIN | |
| capacity of the furnace (loading) | 500 kg |
| max. temperature | 1180°C |
| max. dimensions of treated material | |
| length | 1 600 mm |
| width | 945 mm |
| height | 740 mm |
| max. weight | 500 kg |
| cooling medium | oil, water |
Hardening shop II.
In 2008 we built and put into operation a new hardening shop whose most important machinery is bell hardening furnace. This second hardening shop is for steels where the cooling medium is water.
Basic technical data of the machinery:
| Bell gas-fired furnace | |
| capacity of the furnace (loading) | 20 000 kg |
| max. temperature | 1 000 °C |
| max. dimensions of treated material | |
| length | 2 500 mm |
| width | 2 500 mm |
| height | 2 500 mm |
| max. weight | 5 000 kg |
| cooling medium | voda |