What is the lining
The furnace lining is a protective and insulating layer of material resistant to the heat connected to the inside of the shell, the fireplace and clicking the furnace holes. This layer is used to protect the furnace parts from extreme heat developed during melting. It also prevents excessive heat loss from the outer surfaces of the furnace. Also known as refractory materials, furnace lining materials are usually ceramics or combined metal/ceramics. These protective layers can be made up of individual bricks, poured fluids or semi-semi-mutist aggregates that are encountered in place.
metal melting requires extremely high temperatures with diameters between 1,500 ° and 2,000 ° C (2,730 ° and 3,630 ° Fahrenheit). In order to prevent the destruction of the furnace shell with these high temperatures, the assembly is equipped with a lining of the furnace. This lining consists of materials that can withstand this extreme heartbeat degrading. In addition to protecting the furnace structure, the lining also insulates the furnace to prevent unnecessary heat loss. This reduces the NGOouter heating needed to maintain melting temperatures and streamline furnace.
The furnace lining is usually applied to all internal surfaces. This includes dome, shell, fireplace and holes of clicking for pouring or discharge of molten metal. The furnace lining can be composite construction and separate materials are used in different parts of the furnace. This compound design depends on the types of melting metal, capacity and furnace configuration. This is an important consideration because various thermal, chemical and mechanical loads are placed on separate parts of the furnace. Usually, the holes for the edge, fireplace and clicking are lined with different materials than those used on the sides of the Ton Shell.
furnace lining materials are chosen mainly for their ability to withstand the lengthy exposure to extreme temperatures. Other desirable characteristics include resistance to mechanical shock, abrasion and chemiCalic reactions in molten metal. The most commonly used materials for furnace lining are ceramic compounds and combinations of metals/ceramics. Ceramic lining is made from different raw materials, each with its own strengths. Common materials for lining of ceramic furnaces include aluminum oxide, magnesium, silicon carbide and dolomites.
metal and ceramic combinations, also known as cermets, mix high thermal resistance of ceramics with the desired physical properties of steels. Ceramics used in these Cermet combinations include tungsten carbide, bromide zirconium and aluminum oxide. Cermets steel components include iron, cobalt, chrome and nickel.
furnace lining are connected to the interior of the furnaces in a number of different ways. These include pouring or condensed liquids or moistened aggregates into the mold on the inside of the furnace. Another common form of furnace lining is the installation of layers of individual fire -resistant bricks, which are connected with a suitable thermal mortar.