Bod tání hliníku

What is melting point

The melting point is the temperature at which a substance changes from a solid state to a liquid state, and may also be referred to as the melting temperature or melting point.

Melting point of aluminum alloy

In the field of chemistry and physics, melting point is a very important property because it can help us understand the properties and behavior of substances for proper selection and design in practical applications.
Melting points are usually expressed in degrees Celsius or Fahrenheit and can be determined or calculated experimentally.

Comparison of melting points of aluminum and other metals

Hliník je lehký, silný, conductive, and corrosion-resistant metal that is used in a wide variety of fields. As a common metal material, the melting point of aluminum is an important property that people pay attention to. Here is a comparison of the melting points of aluminum and some other common metals:

Zdroj tabulky: https://www.onlinemetals.com/en/melting-points

Which metals have a lower melting point?

Rtuť (Hg) is the metal with the lowest melting point at normal temperature and pressure. Mercury is a silvery liquid metal that is solid below 20 degrees Celsius and liquid above 20 stupňů Celsia, and has a melting point of -38.83 stupňů Celsia (-37.89 stupňů Fahrenheita), the lowest melting point of any known metal.

Aluminum ingot

In addition to mercury, there are other metals with relatively low melting points, such as sodium (Na), hliník (Al) a hořčík (Mg), whose melting points are 97.72 stupňů Celsia, 660.32 degrees Celsius and 650 stupňů Celsia, respektive.

Melting points of aluminum alloys with different alloys

Aluminum alloy is an alloy material mixed with aluminum and other metals (jako je měď, zinek, hořčík, atd.). Different grades of aluminum alloys have different melting points due to their different compositions. The following are melting point data for some common aluminum alloy grades:

It should be noted that the above data are for reference only, and will be affected by many factors in actual application, such as material purity, heat treatment process, atd., which may cause a slight change in the melting point.

Navíc, different aluminum alloy grades also have different mechanical properties, odolnost proti korozi, processing properties, atd., and it is necessary to select appropriate materials according to specific application requirements.

Obecně, the melting point of aluminum alloy is a very complicated issue, involving the influence of many factors. V praktických aplikacích, it is necessary to select a suitable aluminum alloy according to specific requirements and conditions to ensure that it has the required mechanical properties, corrosion resistance and heat treatment properties.

Melting points of different grades of aluminum alloys

Does the melting point of aluminum affect the manufacture of aluminum alloy sheets/coils?

Odpověď je ano, first of all we need to understand the production process of plech z hliníkové slitiny/cívka:

Aluminum sheet/coil

• 1. Put the aluminum ingot into the ingot melting furnace to melt the aluminum ingot into liquid aluminum;
• 2. Add a small amount of other elements to the liquid aluminum, jako (mangan, hořčík, měď, žehlička, atd.);
• 3. Cast the synthesized liquid aluminum into aluminum slabs (450-630mm);
• 4. Rolling the aluminum ingot (hot rolling or cold rolling);

In the first step, the temperature must be raised to the melting point of aluminum (660 °C), and the melting point of aluminum is increased, so the temperature of the ingot melting furnace needs to be increased;
The melting points of aluminum and aluminum alloys also have a certain impact on their applications. Aluminum alloys with lower melting points are doomed not to be used in application scenarios with higher ambient temperatures to ensure their own state;