HARDENING is a form of heat treatment, with which steel may be significantly hardened and a structure named martensite is formed. This structure is extremely hard, however it has very low toughness and high internal stress. The product must first be equally heated along the entire cross-section – we must be careful not to overheat the product. Next, the product is cooled rapidly (quenched) from the hardening temperature to the temperature of its environment – above-critical cooling rate. After hardening, very high stresses occur in the product and they are slightly appeased by means of additional annealing. After hardening, the steel is tempered in order to increase its toughness and reduce the hardness and strength of steel..


induktivno kaljenjeWe offer induction hardening, also known as surface hardening, of workpieces with the size of:
-  up to Φ200 X 1500mm
-  up to Φ1000 X 500mm

In induction hardening, high-frequency electrical current which flows through a coil creates an alternating magnetic field. The change of the magnetic field causes the induction of the electric current on the surface of the product. The depth to which these induced/turbulent currents flow depends on the frequency. By selecting a suitable frequency, the desired heating depth of the product may be chosen. Induction hardening is the most suitable method for serial work.

Advantages of induction hardening:
-  easier automation of the process
-  easier regulation of the depth of hardening
-  higher velocities
-  lesser deformities of the products


We offer the vacuum hardening of tools, high-speed steel, OCR, dies, etc.
The Ipsen Vakuum Turbo Treater furnace with internal dimensions 900 × 600 × 600 mm is used for vacuum hardening, load weight: 900 kg. The furnace is mainly intended for the heat treatment of elements, in which NO deformities may occur.