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Process for manufacturing magnesium alloy wheel

A manufacturing process, magnesium alloy technology, applied in the field of magnesium alloy wheel manufacturing process, to achieve the effect of reducing fuel consumption, safe and convenient operation, and low density

Inactive Publication Date: 2011-07-20
SHANGHAI BAOLONG AUTOMOTIVE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because deformed magnesium alloy materials are not easy to be stamped at room temperature, and are extremely brittle, they are rarely used in wheel production

Method used

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  • Process for manufacturing magnesium alloy wheel
  • Process for manufacturing magnesium alloy wheel
  • Process for manufacturing magnesium alloy wheel

Examples

Experimental program
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Effect test

no. 1 example

[0030] The wheel rim manufacturing process of the present invention mainly includes: a hot extrusion step, a rounding step and a pore processing step.

[0031] In the hot extrusion step, the magnesium alloy bar is first cut to a fixed length, refer to a of FIG. 2 . Then in a set of hot extrusion dies (section forming device), the magnesium alloy bar is extruded into a rim semi-finished product. Specifically, the magnesium alloy bar is hot extruded into a profile with a predetermined section, and then in a longitudinal forming device such as A large half of the elliptical rim as shown in b of Figure 2 is formed on the arc track. The elliptical rim here mainly refers to a shape close to an ellipse or an elliptical rim. For example, the two ends of the semi-finished rim shown in b of Figure 2 are in The rim is rolled on a small circle track, and the middle is rolled on a large circle track, or the semi-finished rim is directly bent on an elliptical track. The aforementioned larg...

no. 2 example

[0035]The magnesium alloy wheel manufacturing process of the present invention mainly includes a wheel rim manufacturing process, a wheel spoke manufacturing process and a combined welding process.

[0036] The rim manufacturing process can be implemented with reference to the aforementioned first embodiment.

[0037] The spoke manufacturing process mainly includes a plate blanking step, a hot stretch forming step and a hot stamping step. The plate blanking step is shown in Figure 3. Heat the plate to 280°C-350°C, and then punch out the circular plate and the center hole on the plate. The thermal stretching step includes two thermal stretching steps in this embodiment, as shown in Figure 4 and Figure 5 respectively, of course, different thermal stretching steps can be selected for different spoke shapes, the thermal stretching step is, for example, in Heated stretching is carried out on a 200-ton double-action press, and the stretching temperature is between 280°C and 350°C. ...

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Abstract

The invention relates to a process for manufacturing a magnesium alloy wheel and a process for manufacturing a wheel rim of the magnesium alloy wheel, which comprises: a step of hot extrusion, namely making a sectional material into a more than half ellipse shaped wheel rim semi-finished product in a longitudinal forming device through hot bending; a step of fully rounding, namely rolling the elliptic wheel rim semi-finished product into a full round shape by a rolling circle device, performing further pressurization and rounding on the full-circle wheel rim semi-finished product by a pressure device after performing a preparation process of welding, and finally performing the welding; and a step of air hole processing, namely processing air holes for setting inflating valves. The processfor manufacturing the magnesium alloy wheel is further characterized by comprising: a step of plate blanking, namely manufacturing a circular plate and forming a center hole on the circular plate through hot stamping; a step of hot stretch forming, namely performing hot stretch on the circular plate for scheduled times; a step of hot stamping, namely forming a connecting structure and a heat sinking structure on the wheel rim semi-finished product through the hot stamping; and a step of performing a process of gang welding, namely assembling the wheel rim and a wheel spoke into a wheel.

Description

technical field [0001] The invention relates to a manufacturing process of an automobile wheel and a manufacturing process of the wheel rim. Background technique [0002] At present, aluminum-magnesium alloy wheels produced by die-casting methods occupy a dominant position in the wheel market. Because wrought magnesium alloy materials are not easy to be stamped at room temperature and are extremely brittle, they are rarely used in wheel production. However, the wrought magnesium alloy products produced by hot extrusion or hot drawing processes have higher strength, better ductility, and excellent performance that cannot be replaced by cast magnesium alloy wheels. The mechanical properties of the wheels produced by extrusion and stretching are much higher than those produced by die-casting, and the surface is smooth, no need to be polished, the material is saved, and the weight is lighter. After surface treatment, it will have excellent Corrosion, abrasion, chemical and he...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00B21C23/02B21D5/00B21D53/26
Inventor 张德利
Owner SHANGHAI BAOLONG AUTOMOTIVE CORP
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