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Magnesium-ally mud-guard and production method

A production method and magnesium alloy technology, applied in the field of non-motor vehicle parts, can solve the problems of difficulty in producing non-motor vehicle mud panels, poor plastic deformation performance, unfavorable mechanical forming, etc., and achieve bright and beautiful color, small elastic modulus, Comprehensive performance uniform effect

Inactive Publication Date: 2006-08-09
于克儒
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the narrow control range of the magnesium alloy process, especially the strict temperature requirements for hot extrusion, the relatively poor plastic deformation performance, which is not conducive to mechanical forming, etc., there are great difficulties in the production of non-motor vehicle mud panels with magnesium alloys.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The cut-off magnesium-aluminum series alloy bar with a weight percentage of 6% Al is subjected to surface peeling treatment, then placed in an electric heating furnace and heated to 400° C., and kept for 24 hours for homogenization annealing treatment. Take it out of the oven and air cool to room temperature, then put it into an electric heating furnace and heat it to 355°C±5°C, and keep it warm for 3 hours. When heating, use 4 sections to control the furnace temperature and force the gas to circulate. At the same time, the extrusion die is heated to 340°C±10°C, and the extrusion barrel is heated to 340°C±10°C. The above-mentioned heated magnesium alloy bar is put into an extruder and extruded into a clay board profile, and the extrusion speed is 3-4m / min. During the extrusion process, the temperature should not be too high to melt the magnesium rod and cause burning, or the temperature is too low to be extruded or the mold will be damaged. After extrusion, according ...

Embodiment 2

[0034] The production method of the magnesium-aluminum series alloy mud plate with 3% Al by weight is the same as that of Example 1, except that the extruding process is that the heating temperature of the rod is 395°C±5°C and the temperature is kept for 3 hours. At the same time, the extrusion die is heated to 380°C±10°C, and the extrusion barrel is heated to 380°C±10°C. The extrusion speed is 6-7m / min.

[0035] Put the clay board above into an aging furnace and heat it for stress relief annealing. The heating temperature is 190°C±10°C, keep it warm for 1-2 hours, and then take it out of the furnace and air cool it to room temperature.

[0036] The tensile strength of the magnesium alloy mud plate with this composition can reach 250Mpa, the elongation can reach 14, and the Brinell hardness can reach 45.

Embodiment 3

[0038] The production method is the same as that of Example 1 to produce a magnesium-aluminum series alloy mud plate with a weight percentage of 5% Al. The extrusion process is that the heating temperature of the rod is 370°C±5°C, and the temperature is kept for 3 hours. At the same time, the extrusion die is heated to 360°C±10°C, and the extrusion barrel is heated to 360°C±10°C. The extrusion speed is 4-5m / min.

[0039]Put the clay board above into an aging furnace and heat it for stress relief annealing. The heating temperature is 190°C±10°C, keep it warm for 1-2 hours, and then take it out of the furnace and air cool it to room temperature.

[0040] The tensile strength of the magnesium alloy mud plate with this composition can reach 280Mpa, the elongation can reach 15, and the Brinell hardness can reach 55.

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Abstract

This invention discloses a Mg alloy mud plate and its production method including the following steps: eliminating skins of Mg alloy rods and adding them into a heating oven to be heated to 400deg.C to keep it for 24h then to be cooled to room temperature in air then to be sent into a heating oven to be heated to 350-400deg.C to be kept for 3h then to be sent into a squeezer to be squeezed to sections then carrying out de-stress annealing or artificial aging process, finally, mechanical molding is finished.

Description

technical field [0001] The invention relates to a non-motor vehicle part, in particular to a non-motor vehicle mud plate made of magnesium alloy and a method for producing the mud plate by extrusion. Background technique [0002] At present, the possession of non-motor vehicles (such as bicycles, electric bicycles, tricycles, etc.) in China is very large. For bicycles, there are about 500 million bicycles in my country, and the number of people using bicycles as a means of transportation is about 600 million. But along with the improvement of people's quality of life and the transformation of life concepts, bicycles have become the best tool for sports and leisure activities while acting as a means of transportation. At present, 20 million people in the United States ride bicycles for fitness; in Europe, cycling "one-day tour" has also become one of the most fashionable fashion sports. [0003] In terms of selecting materials for bicycle mud plates, bicycle manufacturers al...

Claims

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Application Information

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IPC IPC(8): C22C23/02C22F1/06B21C23/00
Inventor 于克儒
Owner 于克儒
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