THANKS TO THE NUOVA TEMPRA FURNACE TREATMENT DEPARTMENT, WE ARE CAPABLE OF CARRYING OUT THERMAL TREATMENTS ON STEEL, PIG IRONS, TITANTIUM, AND OTHER ALLOYS.
WE ARE EQUIPPED WITH SEVERAL PIT FURNACES SIZED 900 mm X Ø 1,750 mm WITH A LOADING CAPACITY OF UP TO 850 kg. AND A CHAMBER FURNACE WITH USEFUL DIMENSIONS.
OUR FURNACE TREATMENTS:
- NORMALIZING: This process consists of heating with a temperature in excess of AC3 for a time sufficient to completely austenitize the material followed by cooling in still or circulating air. It is generally used on semi-finished pieces to perfect the grain and make it homogeneous for the purpose of preparing the steel in the best way possible for the heat treatments to follow
- ANNEALING: Annealing is when a pieces is heated for a prolonged period of time at a constant temperature. Subsequent slow cooling homogenizes the structure of the material and removes internal tensions, thereby lowering the resulting hardness
- HARDENING: Tempering is an heat treatment used to increase the core hardness. This process requires heating at a higher temperature than austenitizing, a period of time at this high temperature, and then drastic cooling in oil.
- HARDENING AND TEMPERING: This is a hardening treatment followed by tempering to bring the material to the required hardness and limit the tensions created previously.
- TEMPERING: Tempering us used to reduce residual tensions caused by hardening. Tempering is also used on pieces that, after mechanical works, are in a particularly tense state. In this case, the aim is to restore the previous mechanical characteristics.
- STRESS RELIEF: Stress relief is a heat treatment consisting of heating at a low temperature to lower internal stress of the material and consequently slightly reduce surface hardness. This treatment is usually carried out following other types of heat treatments, like hardening, in furnace or by induction, or case-hardening.
- CASE-HARDENING: Case-hardening is an heat-chemical diffusion treatment that calls for an enrichment of Carbon on the surface of a mechanic component made in steel in a semi-finished/finished state. This treatment is carried out in a controlled atmosphere. Case-hardening is normally followed by a hardening treatment in oil and then tempering to obtain the required surface hardness. The process is carried out on case-hardening steels (16CrNi4, 16MnCr5, 18NiCrMo5, 20MnCr5, etc).
- STRAIGHTENING: Straightening is a process designed to restore the straightness/axiality of a range of pieces subject to deformation during heat treatments
- SHOT BLASTING: Shot blasting is a process that bombards steel balls against a surface to clean it.
- WASHING: We also have two industrial washers: one is used in the induction hardening department to wash all the pieces produced and apply a protective coating to prevent oxidation; the other is in the furnace department and used to wash the material after treatment.