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Preparation method of aluminium alloy rod for electric bicycle frame pipe

An electric bicycle and aluminum alloy technology, applied to bicycles, motor vehicles, motorcycles, etc., to achieve the effect of strong shock resistance, good rigidity, and fine texture

Active Publication Date: 2012-03-28
JIANGSU GREENHUB TECH
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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

[0016] A method for preparing an aluminum alloy rod for an electric bicycle frame tube, 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 preparation method is:

[0017] (1) Weigh pure aluminum ingots, pure magnesium ingots, aluminum-silicon master alloys, aluminum-copper master alloys and aluminum-manganese master alloys respectively by weight percentage; add materials other than magnesium ingots into the melting furnace and heat to 760°C And melt all the materials in the melting furnace within 14 hours, start stirring, when the temperature drops to 740°C, add magnesium ingots, and melt at a temperature of 740°C for 15 minutes;

[0018] (2) Pass Ar-Cl into the melting furnace 2 Mixed gas, refined at 710°C for 10 minutes to obtain molten aluminum alloy; Ar-Cl 2 The volume ratio of argon to chlorine in the mixed gas is 30:1;

[0019] (3) Put the Al-Ti-...

Embodiment 2

[0022] A method for preparing an aluminum alloy rod for an electric bicycle frame tube, 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 preparation method is:

[0023] (1) Weigh pure aluminum ingots, pure magnesium ingots, aluminum-silicon master alloys, aluminum-copper master alloys and aluminum-manganese master alloys respectively by weight percentage; add materials other than magnesium ingots into the melting furnace and heat to 780°C And melt all the materials in the melting furnace within 10 hours, start stirring, when the temperature drops to 740°C, add magnesium ingots, and melt at a temperature of 750°C for 10 minutes;

[0024] (2) Pass Ar-Cl into the melting furnace 2 Mixed gas, refined at a temperature of 730°C for 8 minutes to obtain molten aluminum alloy; Ar-Cl 2 The volume ratio of argon to chlorine in the mixed gas is 32:1;

[0025] (3...

Embodiment 3

[0028] A method for preparing an aluminum alloy rod for an electric bicycle frame tube, 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 preparation method is:

[0029] (1) Weigh pure aluminum ingots, pure magnesium ingots, aluminum-silicon master alloys, aluminum-copper master alloys and aluminum-manganese master alloys respectively by weight percentage; add materials other than magnesium ingots into the melting furnace and heat to 770°C And melt all the materials in the melting furnace within 12 hours, start stirring, when the temperature drops to 740°C, add magnesium ingots, and melt at a temperature of 745°C for 13 minutes;

[0030] (2) Pass Ar-Cl into the melting furnace 2 Mixed gas, refined at 720°C for 9 minutes to obtain molten aluminum alloy; Ar-Cl 2 The volume ratio of argon to chlorine in the mixed gas is 31:1;

[0031] (3) Put the A...

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Abstract

The invention discloses a preparation method of an aluminium alloy rod for electric bicycle frame pipes, which is characterized in that the aluminium alloy comprises the following components 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 inevitable impurities; the preparation method comprises the following steps: (1) melting the ingots and intermediate alloy according to the weight ratios respectively; (2) injecting Ar-Cl2 mixed gas into a melting furnace, refining at a temperature of 710-730 DEG C for 8 min-10 min to obtain aluminium alloy melt; (3) adding an aluminium titanium boron grain refiner with the stream so as to allow the elements in the aluminium titanium boron grain refiner to uniformly melt in the alloy melt; (4) casting at a casting temperature of 720 DEG C-730 DEG C and with a casting speed of 45 mm / min-55 mm / min to obtain the aluminium alloy rod.

Description

technical field [0001] The invention relates to the field of electric bicycles, in particular to a method for preparing an aluminum alloy rod for a frame pipe of an electric bicycle. 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 i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22C21/08C22C1/03C22C1/06B22D1/00B62K11/02
Inventor 张洁
Owner JIANGSU GREENHUB TECH
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