Introduction of forging method of aluminum alloy wheel hub

aluminum alloyhubThe finished product has undergone anti-oxidation treatment. This invention uses a special cast rod. After forging and heat treatment, the tensile strength is 570MPa, the yield strength is 540MPa, and the elongation is 15%. Compared with the wheel hub of the same specification, the weight can be reduced. It is reduced to 17.2kg, which greatly reduces the weight of the product. Through the anti-oxidation treatment of the product, it effectively solves the problem ofAluminum alloy wheelsThe problem of easy oxidation can meet the requirements of the existing trucks for the wheel hub.

At this stage, the forged aluminum alloy wheels in my country use 6061 grade aluminum alloy (LD30), which has the advantages of light weight, beautiful appearance, and good heat dissipation compared with traditional steel wheels. However, due to the limitations of 6061 materials, in the existing Under the common forging method, its good mechanical properties can only reach the tensile strength of 350Mpa, the yield strength of 320Mpa, and the elongation of about 12%. A piece of 6061 aluminum alloy truck wheel is about 25kg. and weight can no longer meet the requirements of the existing trucks for the wheel hubs.

Forging: Pre-forge the front surface of the cast rod with a press forging machine to forge it into a bowl shape, then use a press forging machine to forge the back of the cast rod once and forge it into a cylindrical shape, and use a spinning machine to roll the cast rod into a forging billet , the forging billet is in the shape of the hub edge.

Heat treatment: forged billet solution treatment, solution temperature 465-475°C, solution time 2-3 hours, quench within 15 seconds after solution treatment, quenching temperature 40-60°C, time 85-95 seconds, aging after quenching Processing, aging temperature 115-125 ℃, aging time 22-24 hours.