Role of equipment:

In the process of melting and casting of aluminum and aluminum alloy, the melt contains a large amount of hydrogen and non-metallic slag inclusions, which will form pores, slag inclusions and loose casting defects in the interior and surface of the casting, seriously affecting the physical, chemical, mechanical and deep processing properties of the casting, which makes the application and promotion of aluminum alloy greatly restricted.

Degassing is a relatively effective method for removing hydrogen gas from liquid aluminum. In the industry, online degasser is usually used. Through the rotary jet degassing method, a quantitative degassing gas (argon or nitrogen) is injected into a closed box body, and then it is broken into micro bubbles to replace the hydrogen and suspended substances in the aluminum liquid to achieve the degassing effect.
 

Equipment features:

DA series online degasser is an online degassing equipment newly developed by zhongzhu new materials industry (Jiangsu) co., ltd. inert gas is introduced into the bottom of the box body through one (or more) rotating rotor mechanisms. the inert gas is sheared into microbubbles by a high-speed rotating impeller and uniformly dispersed in the cavity melt. through bubble flotation, good refining effects of degassing, slag removal and alkali metal removal are achieved.

Degassing gas is usually argon or nitrogen, considering nitrogen refining has the formation of nitride impurities, the preferred argon.

Features of DA series online degasser:

● Online refining effect: the degassing efficiency is high and stable, usually up to 55%;

● The lining of the box body is made of high-quality and high-strength aluminized castable silicon carbide material, which is suitable for all aluminum alloys, does not pollute aluminum liquid, and does not crack.

● The outer lining of the box body is provided with anti-aluminum liquid leakage insulation materials to prevent aluminum liquid from penetrating into the insulation layer when the lining cracks; The insulation layer of the box body adopts high-quality calcium silicate insulation board and nano insulation board;

The reasonable cavity and impeller design of the degassing chamber can effectively improve the degassing effect and reduce the fluctuation of the aluminum liquid at the outlet of the degasser;

● The upper cover insulation material adopts high-quality high-strength non-aluminized castable as a whole pouring and firing molding; the upper cover insulation layer adopts high-quality calcium silicate insulation board and nano insulation board;

The heat preservation effect is good, the average temperature of the outer wall of the box usually does not exceed the ambient temperature of 55 ℃.

● The hydraulic lifting and rotating function of the upper cover of the box body is stable in operation, which is convenient for cleaning slag in the cavity and maintenance of equipment spare parts.

● Immersion heater, according to different processes and flow design the best combination of heating power to meet the melt heating or insulation effect, high thermal conductivity, low energy consumption.

● Can be configured according to customer process requirements unilateral or bilateral slag mouth.

●The electronic control system adopts touch screen button operation control mode.

● The multiple alarm and fault detection function of matching process design helps users find and solve problems in the first time.

● Remote control, high degree of automation, and safe and reliable operation.

● Multiple modes of sound and light alarm.

Model parameters: