Thick-walled
6201 aluminum tube Bending aluminum tube
Aluminum tube is a kind of non-ferrous metal tube, which refers to a metal tubular material that is made of pure aluminum or aluminum alloy by extrusion processing to be hollow along its full length in the longitudinal direction.
Aluminum tubes are mainly divided into the following types
Divided by shape: square tube, round tube, pattern tube, special-shaped tube, global aluminum tube.
According to the extrusion method: seamless aluminum tube and ordinary extruded tube
Extruded aluminum tube: billet heating → hot extrusion → sawing → car skin, boring → wool heating → secondary extrusion → tension correction or roll correction → cutting chuck → intermediate inspection → annealing → corrosion → scraping repair → Cold rolling→annealing→heading→stretching→quenching→diameter adjustment→finishing and straightening→cutting product sampling→artificial aging→finished annealing→inspection and acceptance→oiling and packaging.
Seamless
6201 aluminum tube: seamless aluminum tube is extruded by perforation, while conventional aluminum tube is generally extruded by combined die. Short rod, high temperature, and slow extrusion process are used in production, especially the "three temperatures" must be controlled. Aluminum rods, extrusion cylinders, and molds must be kept clean. The aging time and temperature are based on the thickness of the pipe wall and the diameter of the pipe. The size can be adjusted appropriately. Large seamless aluminum tubes are generally formed by hot extrusion and then undergo subsequent effective treatment; small seamless aluminum tubes can be hot extruded or cold stretched, and then undergo subsequent effective treatment.
According to the precision: ordinary aluminum tubes and high-precision aluminum tubes, among which high-precision aluminum tubes generally need to be reprocessed after extrusion, such as cold drawing, fine drawing, and rolling.
According to thickness: ordinary aluminum tube and thin-walled aluminum tube
Performance: corrosion resistance, light weight.
The main alloying elements of 6201 aluminum alloy are magnesium and silicon, and the strengthening phase is Mg2Si. It is a heat-treatable and strengthened aluminum alloy. It has medium strength, good manufacturability and corrosion resistance, no stress corrosion cracking tendency, good welding performance, and good extrusion performance. In this paper, by studying the mechanical properties and electrical conductivity of 6201 aluminum alloy under different temperature rolling different aging system treatments, the main conclusions drawn are as follows: (1) 6201 aluminum alloy is rolled after solid solution, and the same rolling Under the condition of reduction, the lower the rolling temperature, the more the number of dislocation cells and dislocation arrays, etc., and it will even evolve into subcrystalline. When the rolling deformation is 70%, -196℃ cooling rolling, -70℃ The tensile strengths of cold rolling and room temperature rolling are 341MPa, 315MPa and 309 MPa, respectively. (2) The conductivity of 6201 aluminum alloy is increased to 54.5%IACS after cooling and rolling at -196℃ aging at 165℃ for 3h, compared with- The conductivity (50.8%IACS) of 196℃ cooling rolling 125℃ aging 4h increased by 7.3%; but the tensile strength was only 311MPa, compared with -196℃ cooling rolling 125℃ aging 4h tensile strength (345MPa) ) Reduced by 9.8%.
