Process description of aluminium ingot
Casting alloy ingots must be clarified for more than 30min. After cleaning, the slag can be cast. When casting, the furnace of the mixing furnace is aligned with the second and third moulds of the casting machine, so as to ensure the change of the liquid flow and a certain flexibility when changing the die. Furnace eyes and casting machine with a groove connection groove shorter is better, it can reduce the oxidation of aluminum, avoid vortex and splash, casting machine above disable 48h, restart, will die at 4h. The liquid aluminum mold with a shovel into the groove, the surface of liquid aluminum oxide film is removed, called slag. Flow with the first mock exam, will move down a chute mould casting machine is a continuous progress. The mould is moved in sequence, and the aluminum liquid is cooled gradually. When the casting machine reaches the middle of the casting machine, the aluminum liquid has been solidified into aluminium ingot, and the smelting number is printed by the printer. When the aluminum ingot reaches the top of the casting set, it has been completely solidified into aluminum ingot. At this time, the mold is turned over and the ingot is released and dropped on the automatic ingot car. The stacker is automatically stacked and bundled to become the finished aluminum ingot. The casting machine is cooled by spraying water, but must be started in the casting machine, turn full circle before water can be supplied. The aluminum liquid consumes about 8-10t water per ton, and a blower is needed to cool the surface in summer. The casting ingot belongs to the flat mold casting, the solidification direction of the aluminum liquid is from bottom to top, and the upper part is solidified at last, leaving a groove depression. The solidification time and the condition of each part of the aluminium ingot are different, so their chemical composition will be different, but it is in conformity with the standard as a whole.
The commonly used method for casting blend furnace can be divided into two ways of casting casting and continuous casting and continuous casting and vertical semi continuous casting. Continuous casting machines are used. The mixing furnace is to pour the aluminum liquid into the mixing furnace and to be poured by the mixing furnace. It is mainly used for the production of remelting ingots and casting alloys. Casting is carried from ladle directly to casting machine, mainly in the casting equipment can not meet the production, or the quality of raw materials is too poor, can not be directly into the furnace. Since there is no external heating source, the lifting package has a certain temperature, usually in summer at 690~740 degrees, and winter at 700~760 degrees, to ensure a better appearance of aluminum ingots.Mixing furnace, the first to go through the ingredients, and then poured into the mixing furnace, stirring evenly, and then add flux refining.
The casting process of aluminum ingot is molten aluminum liquid into the mold. When the billet is cooled and cast out, the injection process is the key step of the product. The casting process is the physical process of liquid aluminum being crystallized into solid aluminum. The technological process of casting aluminium ingots is as follows:Aluminum - slag - weighing batching furnace - refining - casting - Remelting aluminum ingot - finished product inspection, weighing and warehousingAluminum - slag - weighing batching furnace - scouring - casting alloy ingot casting alloy ingot - - - - - storage of finished product inspection work
