Device for heating steel products

Apparatus (10) for heating steel products (200), in particular blooms or billets, comprising:

• a heating chamber which extends between an inlet and an outlet, inside of which there are defined, in sequence, an inlet zone, an intermediate zone and an outlet zone,
• a plane of advance in said heating chamber defined by the alternation of fixed support elements and mobile support elements supported respectively by fixed bearing elements and mobile bearing elements,
• feed and extraction means provided with respective feed and extraction rollers respectively associated with said inlet and said outlet,
• heating and/or combustion members disposed both above and also below said plane of advance,
• the fixed and mobile support elements, the fixed and mobile bearing elements and the feed and extraction rollers are made of a metal superalloy comprising at least as main components, nickel and chromium, at least for 70% and up to 90% of their composition, and a combination of further components between 10% and 30%, wherein the further chemical components that complete the chemical composition of the superalloy are comprised amongst aluminum, iron, tantalum, zirconium, vanadium, magnesium, calcium, carbon, boron, phosphorus, molybdenum, tungsten, titanium, silicon, niobium, manganese, cobalt,
• wherein making said fixed and mobile support elements, said fixed and mobile bearing elements and said feed and extraction rollers with said superalloy allows to not have liquid-based cooling means inside said heating chamber.