The role of intermediate frequency furnace | alloy furnace in aluminum alloy cas
Date：2020-09-25 / Hits：638
The melting process of aluminum alloy is as follows: intermediate frequency furnace charging → intermediate frequency furnace melting (adding copper, zinc, silicon, etc.) → slag stripping → magnesium and beryllium addition → stirring → sampling → composition adjustment → mixing → refining → slag stripping → intermediate frequency furnace → refining, modification and standing → casting.
Intermediate frequency furnace, refining and purification furnace: the main equipment for aluminum regeneration is intermediate frequency furnace and refining purification furnace. In recent years, developed countries have introduced a series of new intermediate frequency furnace technology innovation measures in production, such as low-cost continuous smelting and treatment process, which can upgrade low-grade scrap aluminum and be used for manufacturing recycled aluminum ingots for casting, die casting, rolling and master alloy. The largest ingot weight is 13.5T. Among them, the remelted secondary alloy ingot (RSI) can be used to make the special sheet metal of the can. The quality of the sheet has reduced the weight of each can to about 14g. Some recycled aluminum is even used to make the frame of computer floppy disk drive.
In the recycling process of waste aluminum, smelting and melt treatment of recycled aluminum are the key processes to ensure the metallurgical quality of recycled aluminum. Modification and refining of aluminum melt can not only change the morphology of silicon in Al Si alloy, but also improve the properties of aluminum alloy. At present, chloride and fluorine salts such as NaCl, NaF, KCI and na3aif6 are mostly used for refining modification and purification of aluminum melt, and some are C12 or c2c16. Processing.
Alloy furnace: the purpose of advanced waste aluminum pretreatment technology is to realize the mechanization and automation of waste aluminum separation, remove metal and non-metallic impurities to the maximum extent, and effectively separate waste aluminum according to alloy composition. The most ideal separation method is to divide waste aluminum into several categories according to main alloy composition, such as alloy aluminum, aluminum magnesium alloy, aluminum copper alloy, aluminum zinc alloy and aluminum Silicon alloy, etc. In this way, it can reduce the difficulty of impurity removal technology and composition adjustment in the smelting process, and can comprehensively utilize the alloy composition in the waste aluminum, especially the waste aluminum with high zinc, copper and magnesium content, which should be stored separately, and can be used as intermediate alloy raw material for adjusting composition in smelting aluminum alloy.
Alloy furnace: iron is a harmful substance in aluminum and its alloy, which has the greatest impact on the mechanical properties of aluminum alloy. Therefore, the scrap steel in miscellaneous aluminum should be selected as much as possible in the pretreatment process. The waste iron and steel separated by magnetic separation needs further treatment. It is difficult to separate some waste iron and steel parts, such as nuts, wires, keys, water heating parts and small gears on the waste aluminum parts, because the non-ferrous metals separated by magnetic separation can improve the value and grade of waste iron and steel However, it is difficult to separate. Manual disassembly and sorting are generally used, but the efficiency is low. In order to improve the production efficiency, the most effective treatment method for the difficult to disassemble aluminum and steel combination is heating in a special melting furnace, so that the aluminum is melted and the scrap steel is removed.
Melting and casting homogenizing furnace: to control the quality of aluminum profile by controlling the alloy composition of aluminum ingot. Adopting advanced proportional heating and temperature control system, the temperature difference is small, the casting adaptability and composition segregation of aluminum bar are eliminated completely, and the plasticity and strength of the alloy are greatly improved.
Intermediate frequency furnace, refining and purification furnace: the main equipment for aluminum regeneration is intermediate frequency furnace and refining purification furnace. In recent years, developed countries have introduced a series of new intermediate frequency furnace technology innovation measures in production, such as low-cost continuous smelting and treatment process, which can upgrade low-grade scrap aluminum and be used for manufacturing recycled aluminum ingots for casting, die casting, rolling and master alloy. The largest ingot weight is 13.5T. Among them, the remelted secondary alloy ingot (RSI) can be used to make the special sheet metal of the can. The quality of the sheet has reduced the weight of each can to about 14g. Some recycled aluminum is even used to make the frame of computer floppy disk drive.
In the recycling process of waste aluminum, smelting and melt treatment of recycled aluminum are the key processes to ensure the metallurgical quality of recycled aluminum. Modification and refining of aluminum melt can not only change the morphology of silicon in Al Si alloy, but also improve the properties of aluminum alloy. At present, chloride and fluorine salts such as NaCl, NaF, KCI and na3aif6 are mostly used for refining modification and purification of aluminum melt, and some are C12 or c2c16. Processing.
Alloy furnace: the purpose of advanced waste aluminum pretreatment technology is to realize the mechanization and automation of waste aluminum separation, remove metal and non-metallic impurities to the maximum extent, and effectively separate waste aluminum according to alloy composition. The most ideal separation method is to divide waste aluminum into several categories according to main alloy composition, such as alloy aluminum, aluminum magnesium alloy, aluminum copper alloy, aluminum zinc alloy and aluminum Silicon alloy, etc. In this way, it can reduce the difficulty of impurity removal technology and composition adjustment in the smelting process, and can comprehensively utilize the alloy composition in the waste aluminum, especially the waste aluminum with high zinc, copper and magnesium content, which should be stored separately, and can be used as intermediate alloy raw material for adjusting composition in smelting aluminum alloy.
Alloy furnace: iron is a harmful substance in aluminum and its alloy, which has the greatest impact on the mechanical properties of aluminum alloy. Therefore, the scrap steel in miscellaneous aluminum should be selected as much as possible in the pretreatment process. The waste iron and steel separated by magnetic separation needs further treatment. It is difficult to separate some waste iron and steel parts, such as nuts, wires, keys, water heating parts and small gears on the waste aluminum parts, because the non-ferrous metals separated by magnetic separation can improve the value and grade of waste iron and steel However, it is difficult to separate. Manual disassembly and sorting are generally used, but the efficiency is low. In order to improve the production efficiency, the most effective treatment method for the difficult to disassemble aluminum and steel combination is heating in a special melting furnace, so that the aluminum is melted and the scrap steel is removed.
Melting and casting homogenizing furnace: to control the quality of aluminum profile by controlling the alloy composition of aluminum ingot. Adopting advanced proportional heating and temperature control system, the temperature difference is small, the casting adaptability and composition segregation of aluminum bar are eliminated completely, and the plasticity and strength of the alloy are greatly improved.