Truck and motor coach magnesium hub rotary-swaging forming method

A technology for trucks and buses, applied in the field of automobile manufacturing, which can solve the problems of large-size wheel hubs that are easily deformed, complex processing, and cracking of magnesium alloys, so as to save machining amount and energy consumption, reduce subsequent processing, and be easy to operate. Effect

Inactive Publication Date: 2015-07-08
山西晋隆发科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this process and process are relatively simplified, the preformed hollow blank has high requirements for materials, and the capacity of magnesium alloy is cracked; in addition, this process requires high follow-up processing, and the production of large-sized hubs is prone to deformation and cracks
Huang Fangfu (201210324225.3) provided a magnesium alloy processing technology, and the technology of using this magnesium alloy to produce wheel hubs. Using this technology, the raw materials are cut and preheated, then forged into blanks, rims are spun, and after milling, Machining, painting into wheels, this process is not pre-processed (extruded) before forging, and the production of large-sized wheels is prone to cracks. In addition, subsequent processing is more complicated, wasting energy and materials

Method used

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  • Truck and motor coach magnesium hub rotary-swaging forming method

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Effect test

Embodiment 1

[0020] Embodiment 1 Production of 24-inch AZ80 magnesium alloy wheel hub

[0021] Prepare the material needed for production AZ80 magnesium alloy with a diameter of 300 mm; put the material into the furnace, raise the furnace temperature to 400 °C in 30 min, and keep it warm for 1.5 h; at the same time, put the extrusion die into the furnace , kept at 380°C for 30 min. The preheated AZ80 magnesium alloy was extruded with 30 MN. After extrusion, put the extrusion blank into the furnace, raise the furnace temperature to 450 °C for 30 minutes, and keep it for 1 hour. At the same time, put the forging mold into the furnace, and keep it for 30 minutes at 450 °C; After finishing, use an 80 MN forging press for swaging, and keep it for 30 s, spray lubricant on the mold to obtain a forging mold; use a 3000-ton vertical hub spinning machine with an automatic heating device to spin the forging blank, The spinning temperature is 400 ℃, the spindle speed is 4000 r / min, and the magnes...

Embodiment 2

[0022] Embodiment 2 Production of 22-inch ZK60 magnesium alloy wheel hub

[0023] Prepare the material ZK60 magnesium alloy required for production, with a diameter of 240 mm; put the material into the furnace, raise the temperature of the furnace to 350 °C in 30 min, and keep it warm for 1.5 h; at the same time, put the extrusion die into the furnace , kept at 350°C for 30 min. Extrude the preheated ZK60 magnesium alloy with 30MN. After extrusion, put the extrusion blank into the furnace, raise the furnace temperature to 400 °C for 30 minutes, and keep it for 1 hour. At the same time, put the forging mold into the furnace, and keep it for 30 minutes at 420 °C; Finally, swivel forging with an 80 MN forging press, and keep it for 10 s, spray lubricant on the mold to obtain a forging die; use a 3000-ton vertical hub spinning machine with an automatic heating device to spin the forging blank, spin The pressing temperature is 320 ℃, the spindle speed is 3000 r / min, and the ma...

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Abstract

The invention relates to a truck and motor coach magnesium hub rotary-swaging forming method. The method utilizes certain temperature and pressure and adopts rotary-swaging forming to enable magnesium alloy to be formed according to a predetermined die shape. The method comprises the technological steps of blank preparation, blank preheating, extrusion (pre-machining), blank pre-heating, rotary-swaging forming, heat treatment, machining, paint spraying and forming. Magnesium alloy automobile hubs produced by means of the method is high in finished product rate and stable in mechanical property, follow-up machining can be decreased, and machining amount and energy consumption can be reduced. By means of the method, large-sized hubs can be produced, and hub weight can be decreased.

Description

technical field [0001] The invention belongs to the field of automobile manufacturing, in particular to a swaging and spinning method for magnesium wheel hubs of trucks and buses. Background technique [0002] Magnesium alloy has the advantages of light specific gravity, high specific strength and specific stiffness, good damping and machinability, good thermal conductivity, strong electromagnetic shielding ability, good vibration damping performance and easy recycling, which meets the weight reduction requirements of aviation, aerospace and modern automobile industries. , energy-saving requirements, known as "21st century green engineering materials". [0003] With the rapid development of the global automobile industry, the lightweight of automobiles is becoming more and more important. In order to reduce the weight of the car itself, improve fuel-saving efficiency, reduce exhaust pollution, ensure the safety of the car, and make it more excellent in use. As an important...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B21K1/40B21J5/00B21D22/16
CPCB23P15/00
Inventor 蔡康乐王睿张军
Owner 山西晋隆发科技有限责任公司
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