aluminum alloyhubAfter the finished product is oxidized, the present invention adopts a special cast bar. After forging and heat treatment, the tensile strength is 570MPa, the yield strength is 540MPa, and the elongation is 15%. Compared with the wheel of the same specification, The weight can be reduced to 17.2kg, which greatly reduces the weight. This product has been oxidized to effectively solve the problem ofAluminum alloy wheelsThe problem of easy oxidation can meet the requirements of existing truck wheels.
Compared with traditional steel wheels, aluminum alloy wheels have the advantages of light weight, beautiful appearance, and good cooling performance. However, due to the limitations of materials, under the existing commonly used forging methods, their good mechanical properties can only reach The tensile strength is 350mpa, the yield strength is 320mpa, and the elongation is about 12%.
Forging: The front surface of the cast rod is pre-forged by a press forging machine, and the shape is like a bowl, and then the rear surface of the cast rod is forged into a cylindrical shape by a press forging machine, and the cast rod is rolled into a forging billet by a spinning machine, and the forging billet In the shape of a hub rim.
Heat treatment: solution treatment of forged blank, solution temperature 465-475 ℃, solution time 2-3 hours, quenching within 15 seconds after solution treatment, quenching temperature 40-60 ℃, time 85-95 seconds, quenching aging treatment, The aging temperature is 115-125°C, and the aging time is 22-24 hours.