Reliable and quality castings from aluminum alloys
intended for utilization in various industries

Heat treatment

Increased mechanical properties of castings are reached by means of heat treatment. The heat treatment is a process of altering material properties by means of heating. The temperature must have exactly specified and controlled value and time path. The purpose of the heat treatment of the aluminum alloys is to improve the mechanical properties and to eliminate the inner stress in the casting. The less frequent purpose of the heat treatment is stabilization of the casting dimensions.

Heat treatment procedure:

  1. Annealing
  2. Quenching
  3. Hardening

Apart from heat treatment of our products we are offering this operation also to external companies as a separate service. The heat treatment process is certified according to ISO 9001:2008, OHSAS 18001:2007 and ISO 14001:2004.

Technological possibilities


  • Possibility of continuous and non-continuous heat treatment of castings

High-temperature furnace

  • max. temperature of 550ºC ± 5 ºC
  • capacity of 12 baskets (1242x1023x800mm) in one charge
  • hardening in the water up to 20s, water controllable within the range of 20-90ºC ± 5ºC

Low-temperature furnace

  • max. temperature of 250º ± 5ºC
  • capacity of 21 baskets in one charge
  • max. weight of castings per basket is 450 kg


  • three independent chamber furnace workplaces built in 2003-2005
  • one workplace consists of self-standing high-temperature furnace, quenching tank and low-temperature furnace
  • common control system, handling device and visualization
  • capacity of one charge is approx. 1600 kg of castings homogenously distributed in two baskets (1270x1214x1048mm)
  • max. temperature in the high-temperature furnace is 535ºC ± 3ºC
  • water quenching up to 18 seconds, controllable temperature within 20-90ºC ± 5ºC
  • max. temperature in the low-temperature furnace is 350ºC ± 5ºC
  • free cooling in air
  • output in form of protocol
  • hardness measurement results (BRINNELL hardness test)