The melting and casting process of aluminum profile processing factory is mainly to mix the alloy components of aluminum profile products, which is the key step to ensure the quality of aluminum profile products.

In the process of aluminum processing, the aluminum melting furnace needs to be heated to a higher temperature in order to melt aluminum ingots and other metal materials. Therefore, in the process of melting raw materials, impurity removal and purification, a large number of dusty gases will escape when the aluminum melting furnace is turned on. The pollutant composition of the dusty waste gas is mainly determined by the raw material composition added in the melting process. Aluminum ingot is the main raw material for aluminum profile production enterprises. In order to improve some special properties of products, a small amount of magnesium, silicon and rare earth elements are usually added to the aluminum melting furnace to adjust the composition. In addition, refining agent (containing cryolite Na3AlF6) and a small amount of inert gas are added to remove a small amount of H2 from aluminum melt.

Therefore, the dusty waste gas mainly contains metal particles such as aluminum and magnesium, fluoride and some rare earth elements. These pollutant particles are small, and some of them are produced in the form of aerosol. For some aluminum profile production enterprises with waste aluminum as the main raw material, because the surface of waste aluminum also contains substances such as nickel, tin, chromium and organic coatings, the process waste gas produced by aluminum melting furnaces and ash scrubbing furnaces of such enterprises also contains metals and organic substances such as nickel, tin and chromium, and the pollutant composition is more complicated. In order to effectively reduce the environmental pollution caused by the waste gas from the aluminum melting furnace, aluminum profile manufacturers generally set a gas collecting hood above the aluminum melting furnace and other equipment, and use a fan to introduce the dusty waste gas into a bag filter for dust removal.

For those aluminum profile manufacturers who use waste aluminum as the main raw material, it is an effective method to control the purity of waste aluminum into the furnace and minimize the impurity content in waste aluminum. The smoke and dust of aluminum melting furnace is characterized by fine and light dust, which will also cause air pollution when discharged into the atmosphere. Some harmful gases, liquids or certain metal elements can be adsorbed on the dust, which will be taken into the depths of the lungs or adhered to the tube wall of the bronchus with human breathing, causing or aggravating various diseases of the respiratory organs. In addition, the dust in the air will also reduce the visibility of the atmosphere, and the generated smoke can reduce the solar radiation energy reaching the earth's surface.

What are the standards for temperature setting and control of aluminum profiles?

What are the standards for temperature setting and control of aluminum profiles? Aluminum profile is one of the main products, with excellent quality, favorable price and excellent technology. Over the years, it has been deeply loved and supported by our customers. The following is to introduce the temperature setting and control of aluminum profiles:

1. Usually, there is a certain error between the temperature and the surface temperature. When setting the surface temperature, it should be set according to the actual temperature of the furnace, and pay close attention to the temperature fluctuation.

2. Aging and heat preservation of aluminum profiles: aging should be carried out in strict accordance with the process requirements, and the heat preservation time should be appropriate to prevent insufficient hardness caused by under-aging or over-aging.

3, aluminum extrusion frame should not be too dense, there should be a gap between materials. The interval between aluminum profiles, especially small and thick materials that are not ventilated, should be larger. When the tube materials are combined with small and thick materials in a frame, the tube materials of aluminum profiles should be placed below, which is beneficial to the aging circulation air supply.

4. The aluminum profile produced by extrusion has a low hardness before aging and cannot be used as a finished product. Therefore, in general, it must be aged to improve its strength.

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