China Suppliers Factory for Online Hydrogen Removal: Efficient Launder Type Degassing Unit in Aluminum Casting
Introduction
With the continuous development of the application of aluminum materials, the requirements for its inherent quality are becoming higher and higher. The key to ensure the quality of aluminum materials is clean aluminum molten liquid.
Among the factors affecting the purity of aluminum liquid, the precipitation of hydrogen in aluminum liquid during solidification will lead to porosity and other defects, which not only destroys the internal continuity of aluminum, reduces the effective cross-sectional area, but also is the source of cracks.
Therefore, degassing plays an important role in the production of high-quality aluminum. The launder type online rotating degassing unit is installed between the furnace and the casting machine along the length direction of the launder, and the degassing area is divided into several stages by a baffle to realize multi-stage online degassing and improve the degassing efficiency. The submersible baffle and insulation cover are used to form a closed space to prevent air from entering the degassing chamber, effectively reducing the suction and surface oxidation of aluminum liquid.
Product Features
High Degassing Efficiency
The degassing efficiency is high, up to 40%. Multi-zone continuous degassing is adopted to increase the contact area and time between bubbles and aluminum liquid. The overall sealing of the box ensures that the top forms an inert space with the aluminum liquid surface during the casting process, prevents producing more oxidation slag due to liquid oxygenation of aluminum, prevents secondary pollution, and improves the degassing efficiency.
Reduced Metal Loss
The use of launder for degassing can reduce the residual aluminum liquid and metal loss, lower maintenance costs, and make the launder replacement convenient and fast.
Quick Alloy Switching
Easy to switch alloys quickly. Since there is no heating device and no deep box, most of the degassed aluminum liquid is made into products at the end of each casting. The remaining aluminum liquid in the degassing chute can be easily cleaned, which facilitates the rapid switching of alloys.
Ideal Application Suitability
It is especially suitable for semi-continuous casting production lines such as casting rod and recycled aluminum ingot. The alloy of this kind of casting process is changed frequently, and the requirement of hydrogen removal is not high.
Technical Parameters
| Item/Type | HMLDU-2 | HMLDU-4 | HMLDU-5 | HMLDU-6 | HMLDU-7 | HMLDU-8 |
|---|---|---|---|---|---|---|
| Number of rotors | 2 | 4 | 5 | 6 | 7 | 8 |
| Maximum flow (T/HR) | 8 | 20 | 25 | 30 | 35 | 40 |
| Maximum gas consumption (L/min) | 90 | 180 | 270 | 360 | 420 | 480 |
| Driven form | Centralized drive | |||||
Frequently Asked Questions (FAQ)
What is the main function of the launder type online rotating degassing unit?
It is designed to remove hydrogen from molten aluminum liquid during solidification. This prevents defects such as porosity, maintains the internal continuity of the aluminum, and reduces the risk of crack formation.
How does the unit achieve high degassing efficiency?
The unit achieves a degassing efficiency of up to 40% by utilizing multi-zone continuous degassing to increase contact area and time. Additionally, the overall sealing of the box creates an inert space to prevent oxidation slag and secondary pollution.
What are the benefits of using a launder for degassing?
Using a launder reduces residual aluminum liquid and metal loss, lowers maintenance costs, and makes launder replacement convenient and fast.
Why is this unit suitable for quick alloy switching?
Because the unit lacks a heating device and a deep box, most of the degassed aluminum liquid is formed into products at the end of each casting run. The minimal remaining liquid in the chute can be easily cleaned, allowing for quick alloy changes.
Which production lines benefit most from this degassing unit?
It is highly suitable for semi-continuous casting production lines, such as casting rods and recycled aluminum ingots, where alloys are changed frequently and requirements for hydrogen removal are moderate.
What driven form is used for the HMLDU series?
All models in the HMLDU series (from HMLDU-2 to HMLDU-8) feature a centralized drive form for their rotor operation.
China Suppliers Factory for Online Hydrogen Removal: Efficient Launder Type Degassing Unit in Aluminum Casting
Leave Your Message