The rotary degasser reduced gas porosity and hard inclusion in castings

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The rotary degasser reduced gas porosity and hard inclusion in castings

The rotary degasser is typically used during the melting of aluminum alloy. The degassing units can be used in foundry, die casting, and also for extrusion purposes. The purpose of degassing machine is to remove hydrogen dissolved in the melt. Overview In the rotary type of aluminum degassing, an inert or chemically inactive gas is purged through a rotating shaft or motor. Energy generated by the rotating shaft causes the formation of a large number of fine bubbles that provides a very high surface area to volume ratio. Large surface area promotes fast and effective diffusion of hydrogen into the gas bubbles resulting in equalizing activity of hydrogen in liquid and gaseous phases. The unit is designed to treat cast metal either in transfer ladle treatment or mobile units for furnace treatment. Advantages

 Reduced gas porosity and hard inclusion in castings

 Provide reliable hydrocarbon detection.

 Designed and operated in accordance with industry standards and to meet safety objectives.

 Short treatment time.

 Maintenance-free unit.

 Quick removal of the hydrogen.

 Steady low levels of hydrogen.

 Removal of the non-metallic inclusions.

 Better productivity

 Programmable process which reduces the possibility of mistakes of the operator.

 

Advantages

 Reduced gas porosity and hard inclusion in castings

 Provides reliable hydrocarbon detection.

 Designed and operated in accordance with industry standards and to meet safety objectives.

 Short treatment time.

 Maintenance free unit.

 Quick removal of the hydrogen.

 Steady low levels of hydrogen.

 Removal of the non-metallic inclusions.

 Better productivity

 Programmable process which reduces the possibility of mistakes of the operator.

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