With the rapid development of modern transportation, the performance of materials is required to be higher and higher. Aluminum alloy products have become a research hotspot in the world because of its light weight, good corrosion resistance and high tensile properties.
6026 aluminum rod bar is a kind of high strength Al Mg Si aluminum alloy, which can be strengthened by heat treatment. It is mainly used to manufacture welding structures with high strength and fracture toughness, such as trusses, bars and containers of transportation vehicles; Large heat exchanger and parts that can not be treated by solid fusion after welding; It can also be used to manufacture sports equipment and so on.
6026 aluminum rod bar its chemical composition conforms to the AA standard of the United States. It is produced by semi continuous casting. Foam ceramic filter is used in the casting process, the grain is refined by Al-Ti-B wire and homogenized to eliminate segregation and make the composition more uniform.
The strength of Al Mg Si alloy can be improved by adding Cu to form strengthening phase s (Al2CuMg); The addition of Mn and Cr can increase the recrystallization temperature and effectively prevent the recrystallization process of aluminum alloy; The addition of Bi element can slightly reduce the strength of the alloy, but can improve the cutting performance. This is because Bi particles are brittle and low melting point in the solid state. There are a lot of brittle but not hard particles on the contact surface of the cutting edge during cutting, which is equivalent to reducing the area of the cutting surface, reducing the wear of the cutting tool, reducing the cutting force and cutting temperature
Main points for attention in the production of
6026 aluminum rod bar:
(1) According to the internal control standard, adding alloy elements can effectively improve the strength and machinability of the alloy.
(2) The optimum homogenization process of 6026 aluminum alloy is 550 ℃ × 8h。 After homogenization treatment, the dendrite segregation in the ingot structure is obviously reduced, and the precipitation and diffusion of supersaturated solid solution make the ingot structure uniform.
(3) The heating temperature of ingot is (500 ℃) ± 10) 5 ℃, extrusion speed (5 ± 0.5)m/min。 The mass production tracking results show that the bar can meet the customer's requirements.
(4) At 165 ℃ × Under 8 h aging system, the aging strengthening effect of 6026 aluminum alloy bar can reach the best.
