How to ensure that industrial aluminum profiles can reach the hardness used

The surface of industrial aluminum profiles used by everyone is oxidized by air, so its appearance will look very beautiful and durable, and it is very easy to clean up oil stains. In the case of assembling into commodities, you can apply aluminum alloy profiles of different specifications and models according to different loads, What I will introduce in detail is how to ensure the application strength of industrial aluminum profile processing.

1、 Charge solution

The furnace charge needs to be heated before mixed firing, which can remove the water attached to the surface and reduce the smelting time.

2、 Preparation of crucible and special melting tools in advance

1. Before the new crucible is applied, it shall be cleaned up neatly and carefully to see if there are any penetration defects. It can be delivered only after it is determined that there are no defects. It shall be heated to dark red and insulated for 2 hours to burn off the water and combustibles adhered to the inner cavity of the crucible. After cooling, the inner cavity of the crucible shall be cleaned carefully, and emulsion paint shall be sprayed when the temperature is not less than 200 degrees, The drying treatment can be applied only after it is completely dried.

2. Before the application of special melting tools such as pressure ladle, mixing ladle and pouring ladle, the residual metal materials, oxide scale and other wastes must be removed. After heating, the safety protection building coating shall be painted, and then dried for standby.

3、 Control of melting temperature

The aluminum alloy liquid quickly rises to a higher temperature, and effective mixing is carried out to promote the melting of all aluminum alloy elements. After all elements are determined to be melted, refining and degassing are carried out, and the pouring temperature is about to come after the mud is removed（ Because the temperature of aluminum aqueous solution cannot be distinguished by human eyes, it is necessary to use infrared temperature measuring instrument to control the temperature, and the infrared temperature measuring instrument shall be corrected and repaired on time; The thermal resistance waterproof sleeve shall be brushed with metal materials for a period of time, and coated with protective architectural coating to ensure the accuracy of temperature measurement results and increase the service life.

4、 Control of melting time

In order to better reduce the occurrence of air oxidation and breathing of aluminum alloy profile aqueous solution, we need to reduce the residence time of aluminum aqueous solution in the furnace as much as possible and melt it quickly. In order to better speed up the whole smelting process, we should first add recycled charge with medium degree of fragmentation and low melting point, which is conducive to the generation of a melting pool at the bottom of the crucible, and then add waste aluminum, which can slowly expand the melting pool and accelerate the implementation of melting; After a key part of the charge is melted, aluminum alloy elements with high melting point and a small total can be added, so as to increase the temperature and mix to speed up its melting, and then reduce the temperature and press the aluminum alloy elements that are very easy to be oxidized by air.