Factors affecting the gas content in aluminium sheet casting for sale Haomei

Factors affecting the gas content in aluminium sheet casting for sale Haomei

Does it seem strange to anyone that there are still gases in aluminium sheets? The fact is that gases can be dissolved in different aluminium alloys. However, the gas absorption of a metal is determined by the ability of the metal to bond with the gas. There are a number of factors that influence the gas content in aluminium sheet casting, the main ones being the composition of the metal and the pressure during the casting process. Let's take a look at the relationship between aluminium sheet and gas content and the knowledge of the relationship between the two aforementioned factors together today!

Generally speaking, the solubility of the gas in the metal differs due to the different binding forces between the metal and the gas. Metals and alloys with high vapour pressure can have lower gas content due to evaporative adsorption. And alloying elements that have a greater binding force with the gas lead to an increase in the solubility of the alloy. The elements that have less binding power with gas are the opposite of this, increasing the range of solidification temperature of the alloy, especially the elements that reduce the solid phase line temperature, making it easy for the ingot to produce porosity and looseness. Copper, silicon, manganese and zinc all have a role in reducing the solubility of gases in aluminium alloys, while titanium, zirconium and magnesium are the opposite. The higher the temperature of the molten metal, the faster the thermal movement of the metal and gas molecules, and the increased rate of diffusion of the gas within the metal. Therefore, in general, the solubility of the gas in the metal increases with the temperature.

The influence of pressure in the casting of aluminium alloy profiles such as aluminium rods

Pressure and temperature are two external conditions that are interrelated. The pressure factor also has an important influence on the ability of a metal to absorb gases. As the pressure increases, the solubility of the gas also increases.