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As an advanced process technology, filtration technology has a significant effect on reducing inclusions and pore defects, and improving the mechanical properties and processing properties of castings. The application of filtration technology in casting has undergone a development process: glass fiber filters were used in the 1960s, ceramic foam filters appeared in the late 1970s, […]

Polyurethane sponge, as the raw material for the production of foam ceramics, has a great influence on the performance of foam ceramics, and its influence mainly includes the following aspects. Impact of Product Shrinkage The elasticity and strength of the polyurethane sponge carrier have a direct impact on the shrinkage of the foam ceramics, and […]

Ceramic foam filter (CFF) is a foam ceramic material with a three-dimensional grid structure and high porosity (70 to 90%). Because of its low density, high strength, high temperature resistance, large specific surface area, It has the advantages of large porosity and good filter adsorption, so it is widely used in metallurgy, chemical industry, light […]

The metal elements preparation methods of aluminum alloy include the direct addition of pure metals and the addition of metal additives. Metal Elements Preparation Methods Pure Metal Addition Method The alloy elements whose maximum solid concentration exceeds 1% (atomic molar concentration), such as silver, copper, gallium, germanium, lithium, magnesium, silicon and zinc, can generally be […]

The requirements for the purity of the melt vary slightly with different alloy types and uses. Generally, the hydrogen content is required to be less than 0.15cm^3/100gAl, and the mass fraction of sodium is generally required to be controlled below 5/10^6. In order to obtain a pure aluminum alloy melt, it is necessary to add […]

The basic principle of impurity removal is to use the difference between the density and viscosity of the impurity and the aluminum melt to separate the impurity from the aluminum melt by adding certain elements or using physical methods. Specific methods for impurity removal include filtration, electric flux, electromagnetic purification, and flux refining methods. Filtration […]

Metal purification treatment is a very important link in the production process of aluminum cast-rolled sheet and strip. The traditional aluminum liquid purification process is generally operated in batches in a holding furnace, and nitrogen and chlorine mixed gas and flux are generally used for refining. This purification process is mostly manually operated. The outgassing […]

On-line degassing process is a hydrogen removal process carried out at the same time in the casting process. Since the molten aluminum undergoes hydrogen removal in the holding furnace, the molten aluminum enters the casting machine through the launder and is in contact with air. It can still absorb hydrogen again, resulting in the hydrogen […]

Aluminum Refining in Furnace is an important step in aluminum casting. The reasons why the molten aluminum in the holding furnace needs to be refined mainly include the following four aspects: First, before casting, it is necessary to ensure that the hydrogen content of the molten aluminum meets the requirements of the final product. With […]

The purification of aluminum alloy ingot melt mainly includes the removal of hydrogen from the melt and the removal of oxide inclusions. In the smelting process of aluminum and aluminum alloys, hydrogen is very easy to dissolve in liquid aluminum. In the smelting temperature range, the higher the temperature, the higher the gas solubility, especially […]