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Production method of magnesium alloy hub

A magnesium alloy and hub technology, which is applied in the field of magnesium alloy hub preparation, can solve problems such as low material utilization, long production cycle, and complex process flow, and achieve the effects of improving comprehensive mechanical properties, reducing production processes, and reducing manufacturing costs

Active Publication Date: 2013-07-17
NO 52 INST OF CHINA NORTH IND GRP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, there are two kinds of manufacturing processes of magnesium alloy wheels, casting and forging. For example, the Chinese invention patent "A Manufacturing Method for Magnesium Alloy Wheels" (authorized announcement number CN100515804C) with the patent number ZL03109034. Magnesium alloy wheels, similar to ZL200610086359.0, ZL201010253694.1, etc., adopt casting method, although the production process is simple, the cost is low, and the material utilization rate is high, but the mechanical properties of the body sampling material are low, and its tensile strength is only At about 200Mpa, the internal structure is prone to casting defects such as looseness, inclusions, pores, etc., the density is poor, and the product qualification rate is low; the forging forming method is adopted, although the material tensile strength reaches about 300Mpa, the internal structure is pure, the density is high, and the product is qualified. High efficiency, but the process is complicated, the production cycle is long, and the material utilization rate is low, and the cost is high

Method used

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  • Production method of magnesium alloy hub

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Experimental program
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Effect test

Embodiment 1

[0021] Embodiment 1, combining figure 1 , figure 2 and image 3 As shown, the composite forming technology in the present embodiment manufactures the method for magnesium alloy wheel hub, and concrete steps are as follows:

[0022] (1) Use AZ31 magnesium alloy as the manufacturing material of the wheel hub. The AZ31 alloy is smelted according to the composition ratio, and purified through refining, standing still, cooling and iron removal, and other processes. The pouring temperature is 680°C. The melt is poured into the mold through a special pouring system, and the whole pouring process is protected by gas to protect the gas composition. for CO 2 and SF 6 The mixed gas, where SF 6 The concentration is 0.5vol%.

[0023] (2) Heat the squeeze casting mold to 250°C, the squeeze casting pressure is 100MPa per unit area, and the holding time is 60s.

[0024] (3) Homogenize the magnesium alloy at 390°C for 10 hours; after homogenization, heat the magnesium alloy blank to 35...

Embodiment 2

[0027] Embodiment 2, the composite forming technique in the present embodiment manufactures the method for magnesium alloy wheel hub, concrete steps are as follows:

[0028] (1) AZ80 magnesium alloy is used as the manufacturing material of the wheel hub. The AZ80 alloy is smelted according to the composition ratio, and after purification treatment such as refining, standing still, cooling and iron removal, the pouring temperature is 700°C, and the melt is poured into the mold through a special pouring system, and the whole pouring process is protected by gas to protect the gas composition for CO 2 and SF 6 The mixed gas, where SF 6 The concentration is 0.5vol%.

[0029] (2) Heat the squeeze casting mold to 250°C, the squeeze casting pressure is 100MPa per unit area, and the holding time is 60s.

[0030] (3) Homogenize the magnesium alloy at 400°C for 16 hours; after homogenization, heat the magnesium alloy billet to 380°C, heat the forging die to 300°C, apply pressure thro...

Embodiment 3

[0033] Embodiment 3, the composite forming technique in the present embodiment manufactures the method for magnesium alloy wheel hub, concrete steps are as follows:

[0034] (1) Use ZK60A magnesium alloy as the manufacturing material of the wheel hub. The ZK60A alloy is smelted according to the composition ratio, after refining, standing still, cooling and iron removal and other processes of purification, the pouring temperature is 720 ° C, the melt is poured into the mold through a special pouring system, and the whole pouring process is protected by gas to protect the gas composition for CO 2 and SF 6 The mixed gas, where SF 6 The concentration is 0.5vol%.

[0035] (2) Heat the squeeze casting mold to 250°C, the squeeze casting pressure is 100MPa per unit area, and the holding time is 60s.

[0036] (3) Homogenize the magnesium alloy at 400°C for 10 hours; after homogenization, heat the magnesium alloy blank to 380°C, heat the forging die to 300°C, apply pressure through ...

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Abstract

A production method of a magnesium alloy hub is characterized by including the steps of first, smelting; second, squeeze-casting; third, homogenizing; fourth, forging; fifth, thermal treatment; and sixth, subsequent treatment. Compared with the prior art, the production method has the advantages that the production method combines advantages of magnesium alloy hub production by casting and forging, and the magnesium alloy hub is made by squeeze-casting and forging according to the features of squeeze casting technology; the magnesium alloy hub is imparted with excellent comprehensive performance, the production process is simple, and the production cost is low.

Description

technical field [0001] The invention relates to a preparation method of a magnesium alloy wheel hub, belonging to the technical field of alloy production. Background technique [0002] As the lightest engineering metal material, magnesium alloy has a series of unique characteristics such as light specific gravity, high specific strength and specific stiffness, good damping and machinability, good thermal conductivity, strong electromagnetic shielding ability, good shock absorption and easy recycling. Advantages, known as "green engineering materials in the 21st century". The application of magnesium alloy materials has become an important development direction of automobile lightweight. [0003] In recent years, the application of magnesium alloy structural parts in automobiles has grown at a high rate of 20% per year. For example, Passat and Audi A4 and A6 cars have reached 13.6-14.5kg per vehicle, and will gradually increase to about 80kg in the future. According to the ...

Claims

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Application Information

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IPC IPC(8): B23P15/00B22D18/02C22F1/06B21J5/02
Inventor 王军朱秀荣郑顺奇徐永东王荣邵志文陈大辉郭红燕聂景江任政
Owner NO 52 INST OF CHINA NORTH IND GRP CORP
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