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Low-pressure casting method for abrasion-resistant aluminum alloy bicycle accessory

A low-pressure casting, aluminum alloy technology, applied in the field of aluminum alloy production and deep processing, to achieve the effect of uniform internal structure, strong corrosion resistance and wear resistance, and dense structure

Active Publication Date: 2020-06-16
太仓耀展金属制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aluminum alloy has the advantage of light weight and will not significantly increase the weight of the bicycle, but there is still a lot of room for improvement in the strength and wear resistance of aluminum alloy itself

Method used

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  • Low-pressure casting method for abrasion-resistant aluminum alloy bicycle accessory
  • Low-pressure casting method for abrasion-resistant aluminum alloy bicycle accessory

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A low-pressure casting method for wear-resistant aluminum alloy bicycle accessories, comprising the steps of:

[0026] (a) Prepare aluminum alloy melt: place the aluminum alloy in a heating furnace, heat and melt the aluminum alloy at a high temperature, so that the aluminum alloy is melted into the molten metal;

[0027] (b) Preparation of the mold and casting shape before pouring: the squeeze casting machine adopts a detachable squeeze casting mold, removes the aluminum slag and the combustion residue of the sand core with air before use, and then coats the paint for maintenance and checks the airtightness Check whether the gate is blocked, and check whether the opening and closing mold has misalignment and sealing problems;

[0028] (c) Low-pressure pouring: call the designed pressure-time curve, carry out low-pressure pouring and solidify under pressure, including raising liquid, filling, pressurizing, maintaining pressure, solidifying, and depressurizing, forming a...

Embodiment 2

[0042] A low-pressure casting method for wear-resistant aluminum alloy bicycle accessories, comprising the steps of:

[0043] (a) Prepare aluminum alloy melt: place the aluminum alloy in a heating furnace, heat and melt the aluminum alloy at a high temperature, so that the aluminum alloy is melted into the molten metal;

[0044] (b) Preparation of the mold and casting shape before pouring: the squeeze casting machine adopts a detachable squeeze casting mold, removes the aluminum slag and the combustion residue of the sand core with air before use, and then coats the paint for maintenance and checks the airtightness Check whether the gate is blocked, and check whether the opening and closing mold has misalignment and sealing problems;

[0045] (c) Low-pressure pouring: call the designed pressure-time curve, carry out low-pressure pouring and solidify under pressure, including raising liquid, filling, pressurizing, maintaining pressure, solidifying, and depressurizing, forming a...

Embodiment 3

[0059] A low-pressure casting method for wear-resistant aluminum alloy bicycle accessories, comprising the steps of:

[0060] (a) Prepare aluminum alloy melt: place the aluminum alloy in a heating furnace, heat and melt the aluminum alloy at a high temperature, so that the aluminum alloy is melted into the molten metal;

[0061] (b) Preparation of the mold and casting shape before pouring: the squeeze casting machine adopts a detachable squeeze casting mold, removes the aluminum slag and the combustion residue of the sand core with air before use, and then coats the paint for maintenance and checks the airtightness Check whether the gate is blocked, and check whether the opening and closing mold has misalignment and sealing problems;

[0062] (c) Low-pressure pouring: call the designed pressure-time curve, carry out low-pressure pouring and solidify under pressure, including raising liquid, filling, pressurizing, maintaining pressure, solidifying, and depressurizing, forming a...

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Abstract

The invention belongs to the technical field of aluminum alloy producing and machining, and particularly relates to a low-pressure casting method for an abrasion-resistant aluminum alloy bicycle accessory. The low-pressure casting method comprises the following steps that a) aluminum alloy melt is prepared; b) a mold and a cast are prepared before pouring; c) low-pressure pouring is carried out, wherein a deigned pressure time curve is called, low-pressure pouring is carried out, solidification is carried out under pressure, liquid lifting, mold filling, supercharging, pressure maintaining, solidification and pressure relieving are included, and the aluminum alloy bicycle accessory is formed; d) cooling and demolding are carried out; and e) thermal treatment is carried out, wherein after the obtained aluminum alloy bicycle accessory is subjected to solution treatment, quenching treatment and quenching treatment, natural cooling is carried out, and the finished aluminum alloy bicycle accessory is obtained. The tensile strength of the aluminum alloy bicycle accessory is larger than or equal to 380 MPa, the yield strength is larger than or equal to 360 MPa, and the ductility is largerthan or equal to 6%.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy production and deep processing, and in particular relates to a low-pressure casting method for wear-resistant aluminum alloy bicycle accessories. Background technique [0002] In the prior art, one of the main materials for making bicycle accessories is aluminum alloy. Compared with other materials, it has a good lightweight effect, good corrosion resistance, good recycling, easy processing and forming, surface spraying and anodic oxidation treatment The craftsmanship is mature. Its relatively low production cost, perfect process technology, and no need for professional production equipment and technology make aluminum alloy the most ideal and most popular material for lightweight comprehensive performance. Aluminum alloy has the advantage of light weight and will not significantly increase the weight of the bicycle, but there is still a lot of room for improvement in the strength and wear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D18/04C22C21/02C22C1/03C22C1/06C22F1/043
CPCB22D18/04C22C1/026C22C1/03C22C1/06C22C21/02C22F1/002C22F1/043
Inventor 王小军
Owner 太仓耀展金属制品有限公司
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