Annealing and normalizing
The annealing process is a heat treatment that is mainly carried out on alloy steels and copper. The metal alloy is heated to a temperature that is usually lower than its melting point and then cooled slowly. The aim of annealing is to achieve a chemical, structural or mechanical balance of the material. By annealing it is possible to reduce the material hardness and increase its ductility.
Normalizing is a heat treatment that involves heating the material to a high temperature, maintaining that temperature for approximately 15 minutes and then cooling the material in calm air. The aim of this process is to allow refining and homogenisation of the crystalline grain and to relieve the tension caused by plastic deformation processes. This is necessary so that steels can be subjected to further heat treatments. The normalizing process is used to treat parts for the mechanical industry, including rolled steels, castings, forgings, carbon and low-alloy steel castings.
These heat treatments normally take place inside continuous ovens for annealing and normalizing that can reach temperatures of approximately 900°C. The materials to be treated are moved inside the continuous oven on conveyor belts for high temperatures.
Costacurta conveyor belts for high temperatures are sized according to the operating conditions, the size of the parts to be treated and the workload, and are normally made in stainless steel 14 (W. Nr. 1.4841), NiCr 37/18 (W. Nr. 1.4864).
As well as guaranteeing a high-quality product, Costacurta provides technicians and engineers to assist clients in the selection of the most suitable type of belt for their machinery and processes.