Production process description of industrial aluminum profile

Industrial aluminum profile factories generally go through high-temperature melting production and processing when making aluminum profiles, so the high-temperature resistance of aluminum profiles will be strong and the physical properties will be very stable.

Firstly, the aluminum profile furnace charge is solved. Before all furnace charges are mixed, they all need to be heated to remove the adhesive moisture on the surface and reduce the smelting time. Before the application of the new crucible, it is necessary to remove the defects of cleanliness and penetration carefully. It can be delivered for use only after it is determined that there are no defects. Heat it to dark red and remember to keep it insulated for 2 hours, so as to burn away the water in the inner cavity of the adhered crucible and flammable chemicals. After waiting for refrigeration, it is necessary to carefully remove the inner cavity of the crucible, When the temperature is not less than 200 ℃, spray emulsion paint, dry it, and then it can be applied. Then, the residual metal materials, oxide scale and other wastes must be removed before the application of special melting tools such as pressure ladle, mixing ladle and pouring ladle. After heating, the safety protection building coating shall be brushed and dried for standby. It should be noted that the melting temperature is controlled, the alloy liquid rises rapidly to a higher temperature, and effective mixing is carried out to promote the melting of all alloy elements. After determining the melting of all elements, refining and degassing are carried out, and the pouring temperature is about to come after stripping the sludge. 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. In order to reduce the air oxidation and respiration of aluminum profile aqueous solution, the residence time of aluminum aqueous solution in the furnace should be reduced as much as possible and melted quickly. In order to speed up the whole smelting process, the reheating material with medium level lumpiness and low melting point should be added first, so as to produce the solution pool at the bottom of the crucible as soon as possible, and then the waste aluminum should be added to make it slowly penetrate into and slowly expand the solution pool to speed up the melting; After the key part of the charge is melted, add alloying elements with high melting point and few total amount, raise the temperature and mix to speed up the melting, reduce the temperature and press the alloying elements easy to be oxidized by air.