Spinning process of magnesium alloy hub

Abstract

The invention provides a spinning process of a magnesium alloy hub, which comprises the following steps of step 1, a magnesium alloy bar is heated to 350-430 DEG C, and heat preservation is conducted for 20 minutes; step 2, the bar is subjected to primary forging forming under a forging press, and the forging pressing speed is 6-15 mm / s; step 3, the bar is subjected to finish forging forming under a forging press, and the forging pressing speed is 5-8 mm / s; step 4, stress relief annealing is conducted on the magnesium alloy blank obtained after finish forging; step 5, carrying out solid solution on the annealed magnesium alloy blank; step 6, the blank obtained after solid solution is taken out, and spinning is directly conducted through a spinning machine; and step 7, heat treatment and heat treatment aging treatment are carried out. The magnesium alloy hub with excellent performance is obtained through the process, and the spinning process and the machining efficiency are greatly improved.

Description

technical field [0001] The invention relates to the technical field of wheels, in particular to a spinning process of a magnesium alloy wheel hub. Background technique [0002] Magnesium alloy is an alloy composed of magnesium and other elements. It has low density, high specific strength, large specific elastic modulus, good heat dissipation, good shock absorption, greater impact load capacity than aluminum alloy, and resistance to organic and alkali corrosion. Performance and other characteristics, it is the lightest metal among practical metals, the specific gravity of magnesium is about 2 / 3 of that of aluminum, and 1 / 4 of that of iron, so it is widely used in the fields of automobiles, aviation and aerospace, especially in the field of automobiles, such as Parts made of magnesium alloy can make the car lightweight. Nowadays, the lightweight requirements of automobiles are getting higher and higher, and the application of aluminum alloys has encountered a bottleneck in t...

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Problems solved by technology

[0005] It is well known that the performance of forging materials has a great relationship with the forging process and sequence. In the process of magnesium alloy spinning, the choice of spinning process and sequence will have an important impact on the performance of magnesium alloy wheels. Cubic structure, resulting in poor spinning properties of magnesium alloy materials, even if the corresponding products can be forged using traditional forging and extrusion processes, they often show poor material properties

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