Everything starts with precision machining. Automatic lathes, with their high-precision and high-efficiency machining capabilities, provide solid technical support for the customized production of cylinder blocks. Through advanced CNC programming, automatic lathes can accurately control tool paths, complete complex shape cutting, milling, drilling and other processes, and ensure that the dimensional accuracy, shape accuracy and surface finish of the cylinder block meet the design requirements. This process not only lays a good foundation for the wear resistance of the cylinder block, but also ensures the precise matching of the cylinder block and components such as the piston, reduces friction loss, and improves overall operating efficiency.
However, precision machining alone is not enough to meet the extremely high requirements of modern industry for the wear resistance of cylinder blocks. In order to achieve more lasting wear resistance, hard anodizing has become an indispensable key step.
Hard anodizing is an advanced electrochemical surface treatment technology specifically used to enhance the hardness and wear resistance of aluminum alloy surfaces. Through electrolysis, a uniform, dense, and extremely hard aluminum oxide film is formed on the surface of the aluminum alloy. The average hardness of this oxide film can reach more than HV500, and even under certain special processes, the hardness can exceed HV1000, far exceeding the surface hardness of ordinary aluminum alloys.
In the application of cylinder blocks, the high hardness characteristics of hard anodized films show great value. Under high-speed and high-load operating conditions, the inner wall of the cylinder body will suffer severe friction and wear. In such an environment, the traditional aluminum alloy cylinder block is prone to increase the surface roughness of the inner wall due to wear, which in turn affects the sealing performance, reduces engine efficiency, and even causes failures. The presence of hard anodized film greatly enhances the wear resistance of the inner wall of the cylinder body, and can keep the inner wall smooth and flat even under extreme conditions, effectively reducing friction loss.
The wear resistance of hard anodized film comes from its unique structure and chemical composition. During the electrolysis process, the growth of aluminum oxide film follows specific electrochemical laws, forming a structure composed of fine columnar grains. These grains are closely arranged to form a highly dense oxide film layer, which effectively blocks the penetration and erosion of external media. At the same time, the aluminum oxide film has extremely high hardness and toughness, which can resist wear and maintain surface integrity during friction.
The hard anodized film also has good self-lubrication. During the friction process, the tiny protrusions on the surface of the oxide film can play a lubricating role to a certain extent, reducing the friction coefficient and further reducing the wear rate. The combination of this self-lubrication and high hardness enables the cylinder block to maintain good wear resistance under high-speed and high-load operation.
The cylinder block combined with automatic lathe finishing and hard anodizing treatment has shown significant advantages in wear resistance. In practical applications, these cylinder blocks can not only keep the inner wall smooth and flat under extreme conditions, reduce friction loss, but also effectively resist the erosion of corrosive media such as coolant and fuel, and extend the service life of the cylinder block. The good thermal conductivity of the hard anodized film also helps the cylinder block to dissipate heat more effectively, maintain the normal operating temperature of the engine, and improve the overall operating efficiency.
