In the production, during the solidification of aluminum alloy solution, hydrogen atoms in the aluminum alloy solution spontaneously form hydrogen molecules, and hydrogen molecules and non-metallic inclusions form bubbles during solidification, and inclusions are the main cause of defects in aluminum alloy castings. The reason is that most of the impurities and gases in the aluminum alloy solution come from the refurbished material. Therefore, the refining treatment of the aluminum alloy solution is essential when the aluminum alloy is smelted. The current refining agent can only reduce the hydrogen content in the aluminum alloy solution to the level of 0.15ml/gAL, and the effect is not optimal. In order to overcome the above shortcomings, AdTech provides an aluminum alloy granulated refining flux.
When in use, add the refining agent to the refining tank at a dosage of 1.5~2.5kg per ton of molten aluminum, and cover the lid. When the temperature of the molten aluminum is 700-740°C, turn on the switch of the refining tank and let in nitrogen (required nitrogen pressure is 1.2-1.8kg/cm2). When the refining agent is sprayed out from the refining iron pipe, the iron pipe can be inserted into the molten pool and moved slowly and evenly. High-purity nitrogen sprays the refining agent into the aluminum melt, and under the combined action of the dispersive small air bubbles and the flux, the oxidized inclusions and hydrogen in the aluminum liquid are removed. The refining time is 15-25 minutes. When all the flux in the tank is sprayed out, draw out the refining tube and turn off the nitrogen.
Aluminum Alloy Refining Flux Effect
1. It has excellent refining and slag cleaning performance, can effectively remove inclusions and gases in molten aluminum, and play a role in purifying molten aluminum.
2. It has good metamorphic properties, optimizes and refines the shape and distribution of eutectic silicon, and improves mechanical properties.
3. Refining, deterioration, and slag removal are processed at one time, easy to use.
4. After treatment, the slag is loose and dry and easy to remove.