HS code-based re-exports in free zones

Engine housing: The HS code-based re-exports in free zonescornerstone of vehicle power, the engine is the core component of the car, while the engine housing is the protective shell of the engine. It is not only a key part to protect the engine and ensure its normal operation, but also plays a crucial role in the performance and power of the vehicle. In this article, we will discuss the function, design and manufacturing process of the engine housing. Engine housingThe function of the engine housing is the protective shell of the engine. Its main function is to protect the engine from external debris and water infusion, reduce engine noise and reduce the vibration of the car to the engine. In addition, the engine housing also helps to discharge exhaust gas and provides support for the heat dissipation system so that the engine is not affected by considerable temperature changes. The design of the engine housing should consider the following points: 1. Material The engine housing is usually made of aluminum alloy injection metal forming (MIM) or injection molding. This material is light, high in strength and corrosion-resistant. Two. Shape and size In order to adapt to different types of engines, the engine housing needs to have different shapes and sizes. Some car manufacturers also take aerodynamics into account when designing engine housings and use curved designs to make air flow more smoothly.3. Connection method The connection between the engine housing and the engine includes bolts and welding. The advantage of bolting is that it is easy to maintain, while the advantage of welding is that it is relatively firm. In the manufacturing process, the engine housing is made through a multi-step manufacturing process. The following are its basic manufacturing steps: 1. Casting and forging Casting or forging is one of the most common methods of manufacturing engine housing. These methods can produce an integrated engine housing. At the same time, because casting and forging require molds, the engine housing produced has a high accuracy for size. Two. Cutting means that the shape after cutting is a relatively simple injection metal or aluminum alloy. This process is essential because metal parts need to be cut into standard sizes. 3. The next key step of machining is machining.Use machine tools, such as cutting machines, drilling machines and milling machines, to carve the sliced metal into a formal engine housing bottom and cover. Four. Welding and assembly Finally, the bottom and cover of the engine housing are welded together, and other parts, such as hoods, fans and radiators, are assembled. In this way, the engine housing can be installed on the engine. Conclusion Although the engine housing is an important auxiliary part of the automobile engine, it greatly affects the performance of automobile power. Manufacturing a reasonable engine housing requires scientific and reasonable design and manufacturing technology to ensure that the engine gives full play to its power and ensure its long-term use, which provides a strong guarantee for the development of the entire automobile industry.

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