03 12月 Aluminum Alloy Melt Refine Flux
Aluminum Alloy Melt Refine Flux
There are many kinds of Aluminum Alloy Melt Refine Flux used in aluminum alloy smelting, which can be divided into two types: covering agent (flux for preventing melt oxidation and inhalation) and refining agent (gas for removing gas and inclusions for inclusions). The covering agent is different from the refining agent. However, any flux used in the aluminum alloy smelting process must meet the following conditions.
1. The melting point should be lower than the melting temperature of the aluminum alloy.
2. The specific gravity should be less than the specific gravity of the aluminum alloy.
3. can adsorb and dissolve inclusions in the melt and can remove gases from the melt.
4. should not be chemically active with metals and furnace linings. If it acts with metals, it should only produce inert gases that are insoluble in metals, and the flux should be insoluble in the molten metal.
5. The hygroscopicity is small and the evaporation pressure is low.
6. should not contain or produce harmful impurities and gases.
7. should have appropriate viscosity and fluidity.
8. easy to manufacture: the price is cheap.
Aluminum Alloy Melt Refine Flux Dosage
When smelting aluminum alloy scrap, the quality of the scrap is different, and the amount of the covering agent and the refining agent are also different.
Aluminum Alloy Melt Refine Flux Usage
The following methods are commonly used in the production of Aluminum Alloy Melt Refine Flux
1. The melt is refined in a ladle. First, a pack of flux is placed in the ladle, then the melt is injected and stirred thoroughly to increase the contact area between the two.
2. The melt is refined in an induction furnace. The flux is charged into the induction furnace, and the flux and the melt are thoroughly mixed by the stirring action of the induced magnetic field to achieve the purpose of refining.
3. Refining in a ladle or in a furnace with a mixer to mechanically disperse the flux in the melt.
4. The melt is refined in a magnetic field stirring device. The method relies on the action of electromagnetic force to continuously deliver the melt to the flux-metal interface to achieve active contact between the aluminum melt and the flux. The higher the melt rotation speed, the better the refining effect.
5. Electric flux refining. This method is to continuously refine the melt through a flux layer to which an electric field (at the metal-flux interface) is applied.