Magnesium alloy wheel forging-spinning composite forming method

A composite forming, magnesium alloy technology, applied in the direction of wheels, web wheels, vehicle parts, etc., can solve the problems of complex forming process, slow forging speed, low production efficiency, etc., to reduce casting defects, reduce machining allowance, The effect of material saving

Inactive Publication Date: 2014-12-10
山西银光华盛镁业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of difficult forming, slow forging speed, complex forming process, low production efficiency and high cost in the existing forming method when casting magnesium alloy wheels, the present invention provides a magnesium alloy wheel forging and spinning composite forming method

Method used

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  • Magnesium alloy wheel forging-spinning composite forming method

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Effect test

Embodiment 1

[0023] A magnesium alloy wheel forging and spinning composite forming method, comprising the following steps:

[0024] Preheat the magnesium alloy bar to 250°C in a heating furnace and keep it warm for 3 hours;

[0025] Heat the wheel forging die to 250°C in a die heating furnace for preheating, and keep it warm for 6 hours;

[0026] Take out the preheated wheel forging die and install it on the forging press;

[0027] Open the wheel forging die, and spray and lubricate the working cavity of the wheel forging die with oil-based graphite lubricant;

[0028] Put the wheel intermediate into the flaring mold for flaring;

[0029] After the flared wheel intermediate product is cooled, it is pre-machined, and the spinning is processed into the groove and the center hole;

[0030] The above wheel intermediate product was preheated to 200°C and held for 1 hour, and then spun on the CNC spinning equipment. The mold core temperature of the CNC spinning equipment was 150°C, the spindl...

Embodiment 2

[0033] A magnesium alloy wheel forging and spinning composite forming method, comprising the following steps:

[0034] Preheat the magnesium alloy bar to 300°C in a heating furnace and keep it warm for 3.5 hours;

[0035] Heat the wheel forging die to 300°C in a die heating furnace for preheating, and keep it warm for 6.5 hours;

[0036] Take out the preheated wheel forging die and install it on the forging press;

[0037] Open the wheel forging die, and spray and lubricate the working cavity of the wheel forging die with oil-based graphite lubricant;

[0038] Put the preheated magnesium alloy bar into the opened wheel forging die, carry out forging at a pressing speed of 5 mm / s, and demould to obtain the intermediate product of the wheel;

[0039] Put the wheel intermediate into the flaring mold for flaring;

[0040] After the flared wheel intermediate product is cooled, it is pre-machined, and the spinning is processed into the groove and the center hole;

[0041] The ab...

Embodiment 3

[0044] A magnesium alloy wheel forging and spinning composite forming method, comprising the following steps:

[0045] Preheat the magnesium alloy bar to 350°C in a heating furnace and keep it warm for 4 hours;

[0046] Heat the wheel forging die to 350°C in a die heating furnace for preheating, and keep it warm for 7 hours;

[0047] Take out the preheated wheel forging die and install it on the forging press;

[0048] Open the wheel forging die, and spray and lubricate the working cavity of the wheel forging die with oil-based graphite lubricant;

[0049] Put the preheated magnesium alloy bar into the opened wheel forging die, carry out forging, the pressing speed is 8mm / s, and demold to obtain the intermediate product of the wheel;

[0050] Put the wheel intermediate into the flaring mold for flaring;

[0051] After the flared wheel intermediate product is cooled, it is pre-machined, and the spinning is processed into the groove and the center hole;

[0052] The above-me...

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Abstract

The invention relates to a casting method of magnesium alloy wheels, in particular to a magnesium alloy wheel forging-spinning composite forming method. The method includes feeding, heating, forging, flaring, pre-machining, preheating, spinning, performing heat treatment, finishing and performing surface treatment. The method has the advantages that material is saved, the bar material can be saved above 10%, and the cost of raw material of magnesium alloy during wheel production is saved; the producing efficiency is high, the forming steps are reduced, and the producing efficiency can be improved greatly; since the machining allowance is reduced, when the subsequent forming and finishing are performed, the machining amount is reduced, and the producing efficiency is improved; the waste quality is reduced, in the processing of machining wheels through a wheel blank machine, since the machining allowance is reduced, and the amount of magnesium chips can be reduced after machining; the strength of the wheel is high, in the process of spinning, effects can be applied to positions of the wheel intermediate-product rim portion more evenly through a spinning wheel, and the strength of the wheel is improved.

Description

technical field [0001] The invention relates to a casting method of a magnesium alloy wheel, in particular to a magnesium alloy wheel forging and spinning composite forming method. Background technique [0002] Magnesium alloy is currently the structural material with the lowest density for industrial applications. Its density is only 2 / 3 of that of aluminum alloy and 1 / 4 of that of steel. Magnesium alloy has the advantages of high damping, high specific strength and easy machining. As the moving part of the car, the weight reduction of the wheel is of great significance to the weight reduction of the car and the reduction of fuel consumption. According to relevant literature reports, the energy-saving and braking effects of reducing the unsprung mass of the car by 1kg are equivalent to reducing the sprung body by 10kg. The energy-saving and braking effects of left and right, when magnesium alloy is applied to the wheel manufacturing, can effectively reduce the weight of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00B60B3/02
Inventor 崔凯任平田尧王智勇王彤刘涛
Owner 山西银光华盛镁业股份有限公司
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