Production method for aluminum alloy bicycle frame pipe for electric bicycle

The technology of an electric bicycle and a production method is applied in the production field of aluminum alloy frame tubes for electric bicycles, and achieves the effects of bright and beautiful color, good environmental protection performance and high qualification rate

Inactive Publication Date: 2012-06-13
徐艳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aluminum alloy is the most widely used alloy in contemporary industrial engineering. It has been widely used in ordinary bicycles. However, due to the particularity of electric bicycles, aluminum alloys used in ordinary bicycles cannot be directly applied to electric bicycles.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A production method of an aluminum alloy frame tube for an electric bicycle, the aluminum alloy is composed of the following components by weight percentage: 2% Si, 5% Mg, 0.5% Zn, 1% Mn, 0.3% Cu, and the balance Al And unavoidable impurity, described production method comprises the following steps:

[0016] (1) Melting the aluminum alloy according to the above components and pouring into rods;

[0017] (2) Peeling the surface of the aluminum alloy rod obtained in step (1), then putting it into a heating furnace and heating it to 460° C., and keeping it warm for 12 hours to perform homogenization annealing treatment;

[0018] (3) After the homogenization annealing treatment, it is released from the furnace, cooled to room temperature in air, then placed in a heating furnace and heated to 430°C, and kept for 3 hours; at the same time, the extrusion mold is heated to 380°C, and the extrusion barrel is heated to 380°C;

[0019] (4) Put the above-mentioned heated aluminum ...

Embodiment 2

[0021] A production method of an aluminum alloy frame tube for an electric bicycle, the aluminum alloy is composed of the following components by weight percentage: 3% Si, 2% Mg, 1% Zn, 0.2% Mn, 0.7% Cu, and the balance Al And unavoidable impurity, described production method comprises the following steps:

[0022] (1) Melting the aluminum alloy according to the above components and pouring into rods;

[0023] (2) Peeling the surface of the aluminum alloy bar material obtained in step (1), then putting it into a heating furnace and heating it to 480° C., keeping it warm for 8 hours to perform homogenization annealing treatment;

[0024] (3) After the homogenization annealing treatment, it is released from the furnace, cooled to room temperature in air, then placed in a heating furnace and heated to 450°C, and kept for 3 hours; at the same time, the extrusion mold is heated to 350°C, and the extrusion barrel is heated to 350°C;

[0025] (4) Put the above-mentioned heated alumi...

Embodiment 3

[0027] A production method of an aluminum alloy frame tube for an electric bicycle, the aluminum alloy is composed of the following components by weight percentage: 2.5% Si, 3.5% Mg, 0.8% Zn, 0.6% Mn, 0.5% Cu, and the balance Al And unavoidable impurity, described production method comprises the following steps:

[0028] (1) Melting the aluminum alloy according to the above components and pouring into rods;

[0029] (2) Peeling the surface of the aluminum alloy rod obtained in step (1), then putting it into a heating furnace and heating it to 470° C., and keeping it warm for 10 hours to perform homogenization annealing treatment;

[0030] (3) After the homogenization annealing treatment, it is released from the furnace, cooled to room temperature in air, then placed in a heating furnace and heated to 440°C, and kept for 3 hours; at the same time, the extrusion mold is heated to 370°C, and the extrusion barrel is heated to 370°C;

[0031] (4) Put the above-mentioned heated alu...

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PUM

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Abstract

The invention discloses a production method for an aluminum alloy bicycle frame pipe for an electric bicycle. The aluminum alloy comprises, by weight, 2-3% of Si, 2-5% of Mg, 0.5-1% of Zn, 0.2-1% of Mn, 0.3-0.7% of Cu, and the balance of Al and other inevitable impurities. The production method comprises the following steps: (1) smelting the aluminum alloy according to the components and casting into a bar; (2) carrying out a homogenizing annealing treatment; (3) discharging the bar from a furnace after carrying out the homogenizing annealing treatment, cooling to a room temperature, then placing the bar in a heating furnace to heat to the temperature of 430-450 DEG C, and holding the temperature for 3 hours; concurrently heating an extrusion mold to the temperature of 350-380 DEG C, and heating an extrusion material cylinder to the temperature of 350-380 DEG C; (4) placing the heated aluminum alloy bar into an extruder to extrude into the bicycle frame pipe profile, wherein the extrusion speed is 2-7 m/min.

Description

technical field [0001] The invention relates to the field of electric bicycles, in particular to a production method of an aluminum alloy frame tube for electric bicycles. Background technique [0002] With the shortage of energy, the quickening pace of people's life and the increasingly serious congestion problem in cities, electric bicycles are becoming more and more popular. Its speed is faster than ordinary bicycles, it is more flexible to use than automobiles, and it can adapt to a wider range of roads. Therefore, it has become an important means of transportation for people to travel. [0003] At present, there are a large number of electric bicycles in my country, and people are also improving the performance of electric bicycles. The more important improvements involve further reducing energy consumption and increasing the mileage of a single charge. Most of these studies involve the improvement of rechargeable batteries. However, there are few reports involving th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C21D8/10B21C23/00
Inventor 徐艳
Owner 徐艳
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