A kind of surface treatment method of aluminum alloy vehicle frame

A surface treatment, aluminum alloy technology, applied in the direction of pretreatment surface, surface coating liquid device, metal material coating process, etc., can solve the problems of poor weather resistance, poor corrosion resistance, high temperature resistance, etc., to improve mechanical Strength and high temperature resistance, salt water and water displacement resistance, corrosion and rust prevention effect

Active Publication Date: 2019-04-12
上海凤凰自行车江苏有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the inherent characteristics of the low corrosion potential of aluminum alloys, the aluminum alloys used in bicycles in the prior art basically first carry out anodic oxidation treatment on their surfaces, and then use this surface treatment method in the prior art to treat them. The aluminum alloy surface protection film has low mechanical strength, poor weather resistance, and poor corrosion resistance; the formed coating is thin, has low adhesion to the aluminum alloy surface, and has poor mechanical strength. Falling off, the anti-corrosion effect is poor, and it also affects the hardening of the baking paint

Method used

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  • A kind of surface treatment method of aluminum alloy vehicle frame

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Comparison scheme
Effect test

Embodiment 1

[0018] A method for surface treatment of an aluminum alloy vehicle frame, characterized in that it comprises the following steps;

[0019] S1. Pretreatment: Put the aluminum alloy frame in the dust removal room, remove dust and other sundries on the surface of the frame through a high-pressure dust blower, take it out, put it in a degreasing treatment solution at a temperature of 40°C for 35 minutes, and use Rinse with clean water at 40°C, soak in anti-rust treatment solution at room temperature for 8 minutes, wash with clean water for 2 minutes by ultrasonic vibration, and then dry at 65°C;

[0020] S2. Surface coating: place the aluminum alloy frame in the coating chamber, fill it with mixed gas after vacuuming, and excite electrons on the electrode plate under the condition of 800°C and RF power of 20W, so that the reaction chamber gas becomes plasma with a purity of ≥99.4 % of the aluminum block reacts on the surface of the frame to become nano-crystalline grains, and then...

Embodiment 2

[0023] A method for surface treatment of an aluminum alloy vehicle frame, characterized in that it comprises the following steps;

[0024] S1. Pretreatment: Put the aluminum alloy frame in the dust removal room, remove dust and other sundries on the surface of the frame through a high-pressure dust blower, take it out, put it in a degreasing treatment solution at a temperature of 40°C for 35 minutes, and use Rinse with clean water at 40°C, soak in anti-rust treatment solution at room temperature for 10 minutes, wash with clean water for 2 minutes by ultrasonic vibration, and then dry at 79°C;

[0025] S2. Surface coating: place the aluminum alloy frame in the coating chamber, vacuumize and fill the mixed gas, and the electrode plate excites electrons at 800°C and RF power of 30W, so that the reaction chamber gas becomes plasma with a purity of ≥99.4 % of the aluminum block reacts on the surface of the frame to become nano-crystalline grains, and then the frame is placed in a r...

Embodiment 3

[0028] A method for surface treatment of an aluminum alloy vehicle frame, characterized in that it comprises the following steps;

[0029] S1. Pretreatment: Put the aluminum alloy frame in the dust removal room, remove dust and other sundries on the surface of the frame through a high-pressure dust blower, take it out, put it in a degreasing treatment solution at a temperature of 40°C for 40 minutes, and use Rinse with clean water at 40°C, soak in anti-rust treatment solution at room temperature for 8-10 minutes, wash with clean water for 2 minutes by ultrasonic vibration, and then dry at 80°C;

[0030] S2. Surface coating: put the aluminum alloy frame in the coating chamber, vacuumize and fill the mixed gas, and the electrode plate excites electrons at 800°C and RF power of 25W, so that the reaction chamber gas becomes plasma with a purity of ≥99.4 % of the aluminum block reacts on the surface of the frame to become nano-crystalline grains, and then the frame is placed in a r...

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Abstract

The invention relates to a surface treatment method for an aluminum alloy frame. The surface treatment method comprises the three steps of pretreatment, surface coating and primer and finishing coat spraying. The plasma enhanced chemical vapor deposition coating technology is matched with NaOH-sodium silicate ungrease treatment liquid, barium petroleum sulfonate-hydrochloric acid antirust treatment liquid to conduct surface treatment on the aluminum alloy frame, and the mechanical strength, the corrosion resisting performance and the high-temperature resisting performance of a frame surface coating are improved; and meanwhile, the thickness of the coating is uniform, proceeding of the later paint baking technology is guaranteed, the frame paint baking hardness is increased, and the integral quality of the bicycle frame is improved.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a surface treatment method for an aluminum alloy vehicle frame. Background technique [0002] Aluminum alloy is an alloy composed of aluminum as the base and other elements. Its characteristics are: low density, high specific strength, large elastic modulus, good heat dissipation, good shock absorption, greater impact load capacity than iron, and good corrosion resistance of organic matter and alkali. Due to the many advantages mentioned above, aluminum alloys have been widely used in the field of bicycles at present. [0003] However, due to the inherent characteristics of the low corrosion potential of aluminum alloys, the aluminum alloys used in bicycles in the prior art basically first carry out anodic oxidation treatment on their surfaces, and then use this surface treatment method in the prior art to treat them. The aluminum alloy surface protection film h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C16/34C23C16/513C23C16/02C23G1/22C23G1/12B05D3/02B05D7/14
CPCB05D3/0254B05D7/14B05D2202/25C23C16/0227C23C16/34C23C16/513C23G1/125C23G1/22
Inventor 曹中明鲍洪李发军陶启乾赵虎段道兵
Owner 上海凤凰自行车江苏有限公司
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