Method for producing bicycle wheel fellone using magnesium alloy section bar

A manufacturing method and technology of magnesium alloys, which are applied in the control equipment, manufacturing tools, metal extrusion and other directions of metal extrusion, can solve the problems of poor plastic deformation performance, narrow process control range, unfavorable mechanical forming, etc., and improve the yield of finished products. , The overall performance is consistent and uniform, and the operation is convenient.

Inactive Publication Date: 2008-05-07
于克儒
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the production of magnesium alloy bicycle rims still faces some technical problems: such as narrow process control range, strict temperature requirements for hot extrusion; relatively poor plastic deformation performance, which is not conducive to mechanical forming; relatively poor corrosion resistance

Method used

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  • Method for producing bicycle wheel fellone using magnesium alloy section bar
  • Method for producing bicycle wheel fellone using magnesium alloy section bar

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Experimental program
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specific Embodiment approach

[0033] The production process of magnesium alloy rims includes two processes of extrusion and forming. The specific implementation methods of these two processes are as follows:

[0034] 1. If figure 1 As shown, the magnesium profile extrusion process includes the extrusion process including magnesium alloy rod cutting, solid melting treatment, magnesium alloy rod heating, mold heating, upper die, feeding, extrusion, interrupt sawing, material transfer-, fixed Ruler sawing, aging treatment, inspection, packaging and warehousing.

[0035] Put the cut magnesium alloy rod into the heating furnace and heat it to the solid melting treatment temperature (400°C), keep it warm for 24 hours, then cool it down to room temperature in air; then heat it to 370°C, keep it warm for 2 hours, and enter the extrusion process; Before extrusion, the mold should be preheated, and the preheating temperature is 355°C, which is the extrusion temperature; extrusion requires a certain extrusion speed,...

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Abstract

The invention discloses a method for preparation of a bicycle rimmer, especially a method for preparation bicycle rimmer with a magnesium alloy sections. Said method contains two flow processes that are compression and formation: the compression technique containing cutting magnesium allay rod, solid fused treatment, heating the magnesium, heating the die, fixing the die, inputting the material, compressing, middle sawing, shifting the material, length sawing and aging treatment; the formation technique containing shaping, cutting, coating glue, fixing the pin, plugging in, correct checking, polishing, punching or drilling a strip hole, and punching gas inlet hole. With said method for preparation of bicycle rimmer with magnesium allay, the technique is simple, the operation is convenient, and the prepared bicycle rimmer is elegant and beautiful.

Description

technical field [0001] The invention relates to a method for manufacturing a bicycle rim, in particular to a method for manufacturing a bicycle rim with a magnesium alloy profile. Background technique [0002] The bicycle rim is an important part of the bicycle, which requires high mechanical properties, and at the same time requires the lightest weight, cheap price, and elegant appearance. The part was originally mainly welded by steel, but currently it is mainly produced by aluminum alloy (6061, 6063, 7005) and other profiles, and after T5 or T6 treatment, the mechanical properties are further improved. In order to further reduce the weight of the vehicle, the current method is to use magnesium alloy instead of aluminum alloy. It has been verified by tests that the comprehensive mechanical properties of magnesium alloys have met the requirements for use, but its specific gravity is only two-thirds of that of aluminum alloys. Calculated according to the same volume of mate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P13/00B21C31/00
Inventor 于克儒
Owner 于克儒
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