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Aluminum alloy engine cylinder block and preparation method thereof

An engine block and engine cylinder technology, applied in metal material coating process, liquid chemical plating, electrolytic coating, etc., can solve problems such as poor corrosion resistance and wear resistance, and achieve the effect of enhancing bonding adhesion

Inactive Publication Date: 2019-05-24
山东鲁蓝环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problem of poor corrosion resistance and wear resistance of the aluminum alloy cylinder block under severe working conditions in the prior art, the present invention provides an aluminum alloy engine block and a preparation method thereof to solve the problem of the existing aluminum alloy cylinder block Problems with poor corrosion and wear resistance

Method used

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  • Aluminum alloy engine cylinder block and preparation method thereof
  • Aluminum alloy engine cylinder block and preparation method thereof
  • Aluminum alloy engine cylinder block and preparation method thereof

Examples

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Embodiment 1

[0035] This embodiment provides an aluminum alloy engine cylinder block provided by the present invention, which includes an aluminum alloy substrate, and a composite coating layer is provided on the aluminum alloy substrate, and the composite coating layer includes a zinc-precipitated layer on the surface of the aluminum alloy substrate. The zinc layer is also coated with a Ni-Co-SiC coating by electroplating.

[0036] Further, the above-mentioned Ni-Co-SiC coating includes a nickel-cobalt alloy, and SiC is distributed in the nickel-cobalt alloy. The above-mentioned SiC and nickel-cobalt alloy form a Ni-Co-SiC coating, and the Ni-Co-SiC coating is used to enhance the strength, hardness, corrosion resistance and plasticity of the aluminum alloy engine block.

[0037] Further, the particle size of the SiC is 2-6 μm. The above-mentioned particle size of SiC has the last effect on enhancing the strength, hardness and corrosion resistance of the aluminum alloy engine block; where...

Embodiment 2

[0039] This embodiment provides a method for preparing an aluminum alloy engine block, which is used to prepare the aluminum alloy engine block in Example 1 above. The method for preparing an aluminum alloy engine block requires an electroplating solution for preparing a Ni-Co-SiC coating , the electroplating solution includes nickel sulfamate 300g / L, cobalt sulfamate 15g / L, sodium hypophosphite 1g / L, polyethyleneimine 2g / L, boric acid 40g / L and silicon carbide 40g / L; the electroplating solution The pH value is 3.5.

[0040] figure 1 It is a schematic diagram of the process flow structure of the aluminum alloy engine cylinder block preparation method, such as figure 1 As shown, the aluminum alloy engine block preparation method comprises the following steps:

[0041] S100. Pretreating the aluminum alloy substrate to remove grease, oxide film, silicon impurities and black film on the surface of the aluminum alloy substrate;

[0042] S200, setting a zinc-precipitated layer on...

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Abstract

The invention provides an aluminum alloy engine cylinder block and a preparation method thereof. The aluminum alloy engine cylinder block comprises an aluminum alloy base body; composite plating is arranged on the aluminum alloy base body and comprises a zinc deposit layer on the surface of the aluminum alloy base body; and the zinc deposit layer is further covered with Ni-Co-SiC plating through electroplating. The composite plating is prepared through pretreatment, secondary zinc depositing and electroplating of the Ni-Co-SiC plating. Compared with existing aluminum alloy engine cylinder blocks, the prepared aluminum alloy engine cylinder block has the advantages that the bonding adhesion of the Ni-Co-SiC plating and the aluminum alloy base body is higher; compared with existing Ni-SiC plating, the Ni-Co-SiC plating has the advantages that the strength, the hardness, the corrosion resistance and the plastic property are remarkably improved, so that the service life of the aluminum alloy engine cylinder block is prolonged.

Description

technical field [0001] The invention relates to the field of electroplating, in particular to an electroplating layer applied to an aluminum alloy engine cylinder block and a preparation method thereof. Background technique [0002] In recent years, with the development of my country's motorcycle industry, the requirements of motorcycle engines in terms of power, torque, speed, emission, noise, life and fuel consumption have been continuously improved, so the working conditions of engine parts have become increasingly harsh. The requirements for the material, structure and surface quality of the components are also increasing. [0003] As the key part of the engine and one of the vulnerable parts, the cylinder block, due to factors such as high power, high torque and high emission standards, the working temperature of the cylinder block rises, and the corrosion is aggravated by the increase of combustion products; at the same time, the cylinder block also There is wear and o...

Claims

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Application Information

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IPC IPC(8): C23C18/52C23C18/18C23G1/22C23F1/36C25D3/56C25D15/00
Inventor 浦建堂周磊王晓
Owner 山东鲁蓝环保科技有限公司
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