GF-ELTI Fixed Hearth Furnaces are plants used for the heat treatment of semi-finished products.
This type of plants is characterised by a maximum operating temperature of abt. 1,250 °C and it is designed to obtain excellent temperature uniformity, reheating and cooling gradients varying according to the types of heat treatment required by the Customer.
These furnaces typically consist of:
The plant is built according to the logic of modular prefabrication, which enables to quicken the on-site assembly stages of the plant without requiring the realisation of foundations, but of an adequate support surface only.
The refractory hearth is fixed and placed above the workshop floor, to which it can be anchored simply by means of tie rods / small blocks.
The refractory linings for insulation of the parts forming the furnace can be either cast or made of fibrous materials, according to the application.
These plants are equipped with GF-ELTI Cold Air or Auto-Recuperative Burners, characterised by high speed and fixed power. Their operation is managed through a PLC and the energy supply is kept under constant control by changing the ON and OFF times, to which every single burner is subject.
According to the Customer’s various needs, this type of plants can be designed and realised in observance of the following international standards: API 6A, ASTM A991, AMS 2750, NADCAP, NORSOK, M-650, ABS.
Types of treated products: semi-finished products of various dimensions, weight and shape, handled through manipulators or lift trucks.