ROYCEO
The purposes of metal smelting process
The basic purpose of smelting is to create an alloy of satisfactory chemical composition and high melt purity, which creates favorable conditions for casting ingots of various shapes. Specifically:
(1) In order to obtain an alloy which has uniform chemical composition and meets the requirements.
The organization and performance of alloy material, in addition to the impact of process conditions, firstly is ensured by chemical composition. If a component or impurity - once beyond the standard, we must treat it as the chemical composition waste, resulting in great losses. Obviously, the control of the alloy composition is of great significance, while adjusting the composition of some elements in the alloy content, can greatly reduce the casting crack waste.
(2) To obtain high purity melt alloy by refining
Electrolytic aluminum or smelting scrap supplied by the smelting plant often contains impurities, gases and oxidized slag,these impurities, gases, oxides, etc. must be removed by physical or chemical refining through a smelting process, to increase the purity of molten metal.
(3) In addition to the above objectives, the foundry has the task of compounding the recovered waste material
These recovered wastes are often mismanaged, inconclusive or contaminated with sundries such as oil, or they can not be used directly in the production of finished alloys. The melting process (dual chamber furnace) must be used to obtain accurate chemical composition, and cast into the ingot suitable for re-entry furnace.