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Influence of Inclusions and Hydrogen Content in Melting Process on Mechanical Properties: During the melting process, the inclusions and hydrogen content in the molten aluminum have a greater impact on the mechanical properties. The more slag and hydrogen content in molten aluminum, the lower the density of the casting, the worse the mechanical properties, and […]

The bubble floatation method is divided into single-pipe air blowing method, multi-hole air blowing method, fixed blowing method and rotary blowing method. The single-tube air blowing method is an earlier air blowing refining method. Because of its simple equipment and simple operation, it is usually adopted by micro-small aluminum alloy casting enterprises. However, in this […]

Aluminum-silicon alloy has good mechanical properties such as low density, dimensional stability, good wear resistance and high specific strength, as well as excellent corrosion resistance, so it is widely used in casting industries such as automobiles and aerospace. The application of computer batching software provides a technical basis for precise control of the chemical composition […]

Due to the relatively active chemical properties of aluminum, it easily reacts with water vapor in the atmosphere to form hydrogen and oxidized inclusions, which enter the aluminum liquid. Therefore, defects such as pinholes, inclusions, shrinkage holes, etc. are easy to occur in aluminum castings, which greatly reduces the internal quality. Therefore, obtaining clean aluminum […]

The single-stage filtration method has its own advantages and limitations in terms of CFF filtration mechanism, filter size, filtration efficiency, life and cost of use. The use of multi-stage combined filtration methods can make up for their own shortcomings while playing the advantages of single-stage filtration. Application forms include filter combinations with the same filtration […]

At present, the largest industrial use of foam ceramics is molten metal filters filtration. In the process of metal melting and casting, due to various reasons, there are different forms of inclusions in the melt. Their number, shape, size, distribution will have an adverse effect on the strength, plasticity, and toughness of the casting, and […]

The filtration efficiency of CFF has a great relationship with the number of pores/pore size and the size of insoluble inclusions. The reduction of the pore size improves the ability to “trap” small inclusions and increases the filtration efficiency. The filtration mechanism of CFF is a deep filtration mechanism. When aluminum melt passes through the […]

In the aluminum melt, hydrogen not only exists in the atomic state, but also exists in the melt in combination with various inclusions. AdTech offers online degassing unit for hydrogen removal. Because the rotating nozzle has a “flotation” function while removing hydrogen, a considerable amount of insoluble inclusions can be removed, and the purpose of […]

People have conducted extensive research on reducing the hydrogen content and insoluble inclusions in aluminum alloy melts. The simplest method of molten aluminum degassing in the early days was batch processing in the furnace. The refining gas was introduced into the bottom of the molten pool through a tube to produce bubbles. The refining gas […]

The surface quality of aluminum cast-rolled sheet defects are mainly longitudinal stripe and transverse ripple. The main reasons for the longitudinal streaks on the plate surface are as follows: the gap between the roller and the nozzle is too small, which causes friction between the roll and the casting nozzle, the local damage of the […]