DIFFUSION PROCESS IN REVERBERATORY FURNACE TO CONTROL THE QUALITY OF RECYCLED ALUMINUM

摘要

Since two hundred years, light metal-based manufacturing industry developed rapidly such as: automotive, civil construction structures and beverage cans. Aluminum and its alloys cannot be separated from light metal with a high strength to weight ratio, good castability, and corrosion resistance by forming a passive oxide layer. The transformation in the metalworking, automotive replacement parts in service and civil construction generates the chip's light and aluminum scrap in large quantities continuously. Energy crisis and the scarcity of raw materials affect the low productivity of the manufacturing industry and the implications for the expensive prices of the manufactured products. The process of recycling aluminum scrap from the chip gives some of the benefits such as to save raw materials, and to provide cheap and environmental friendly situation. Magnesium, copper, silicon, manganese, ferro, titanium are often contained in aluminum alloys. The alloy is used to control the quality of castings such as formability to conduct heat and precipitation capable of machining which yields casting, corrosion resistance, and strength. However, these alloys in ingots as raw material-based alloys must be controlled. During the recycling of aluminum alloy, uncontrolled elements cause the formation of inclusion and affect in reducing the yield casting. Diffusion process is very important to control the chemical elements of recycled aluminum and its alloys. This study uses waste materials in civil structural components, automotive and beverage cans in the identification of chemical elements. Reverberatory furnace smelting process using the ladle isolated at a temperature of 700°C, and holding 30, 45, 60, 75 within minutes. Before the molten aluminum is poured into a metal mold (ingot, K-test) prior slag is taken. Furthermore, the recycled ingot tested chemical elements and stem K-test tests inclusion and yields casting.