HS code-driven tariff reduction strategies

List of the contents of this article:

• 1,HS code-driven tariff reduction strategies What does engine cast iron mean
• 2. Will the cast iron engine rust
• 3, Which is more durable, a cast iron engine or an all-aluminum engine?
• 4, castWhich is better, iron engine or all-aluminum engine
• 5, Which is better, an all-aluminum engine or a cast iron engine?

What does engine cast iron mean

Engine cast iron refers to engine parts made of cast iron materials. Cast iron has the advantages of strong wear resistance, high strength, corrosion resistance, etc., so it is suitable for manufacturing Engine parts with high strength and high durability requirements. Engine cast iron is mainly used in various engines such as automobiles, motorcycles and engineering machinery.

The engine is composed of two major mechanisms and five major systems. The so-called cast iron engine and aluminum alloy engine only refer to the material of the engine cylinder block. As for the material of other parts, they are basically the same. That is to say, there are many iron parts on the aluminum alloy engine, and there are also many aluminum alloy parts on the cast iron engine.

Cast iron: good high temperature resistance and not easy to deform. After the cast iron engine is worn, it is simple to maintain and the cost is low; aluminum alloy: light in quality, fast heat dissipation, lightweight aluminum alloy engine, which can effectively reduce the weight of the engine itself and achieve the purpose of relatively fuel saving. The materials used in the engine are now divided into two main types.

And cast iron: First of all, its deformation resistance is particularly strong. The heat load-bearing capacity of cast iron is very large, which is incomparable to that of aluminum alloy materials.Therefore, some high-end car brands, especially turbocharged engines, still use cast iron as the cylinder block material of their engines. In order to resist high temperature and high deformation resistance.

Cast iron engines rust

1. Cast iron engines will rust. Generally, the engines of ordinary cars are castAs long as the iron material is cast iron, it will rust, but the cast iron engine is not easy to rust because it is protected by anti-rust coating.

2. It is normal for cast iron engines to rust, because rust is a characteristic of cast iron. As long as it is exposed to the air for a short time, it will oxidize and rust, so this is a relatively normal phenomenon.

3. The engine material is divided into cast iron and aluminum alloy. Generally, the engine of ordinary cars is made of cast iron, and as long as it is cast iron, it will rust, but the cast iron engine has anti-rust coating protection and is not easy to rust. If the engine cylinder block is made of cast iron, rust may occur.

4. The reason for the rusting of the cast iron part of the Swift engine compartment is the high-temperature parts made of cast iron. Rust is a characteristic of cast iron material. Exposure to air will oxidize rust, which is a normal phenomenon.

5. The middle cylinder of the Peugeot 301 engine is made of castings, and rust is a normal phenomenon. Based on the trust of 12 million users around the world in the 3 series, Dongfeng Peugeot 301 is dedicated to creating a new generation of quality pioneer mid-class cars.

6. It will rust. Because cast iron itself is also iron, it will definitely rust.

Which is more durable, a cast iron engine or an all-aluminum engine?

Advantages of aluminum alloy engine: light weight, direct reduction of vehicle weight, high heat transfer efficiency; Disadvantages: cast iron hardness is not good (but generally added protective plate, there is no problem at all) and high cost; advantages of cast iron engine: high hardness, low cost, disadvantages: heavy weight, cast iron is prone to sand eyes.

Cast iron engines and all-aluminum engines have their own advantages. The advantages of all-aluminum engines are light quality, easy to process and good heat dissipation. The advantages of cast iron engines are deformation resistance, high pressure and high temperature resistance, corrosion resistance, relatively low cost, and great modification potential.

In fact, nowadays almost all engine cylinder heads are made of all aluminum, because aluminum cylinder heads have the best heat dissipation performance. The cylinder head of the cast iron engine is actually made of aluminum alloy, but the cylinder block is cast iron. Compared with all-aluminum engines, the cylinder block heat load capacity of the cast iron engine is stronger, which is more conducive to improving the power of the engine.

In addition, the physical properties of aluminum and cast iron are different. The wear resistance of all-aluminum engines is not as good as that of cast iron engines, so we can often find that aluminum alloy engines still use cast iron cylinder liners inside the cylinder, which can extend the life of the engine.Even if the cylinder liner is worn out, replacing it is more convenient and economical than replacing the entire cylinder block.

Which is better, a cast iron engine or an all-aluminum engine

1. In comparison, the biggest advantage of an all-aluminum engine is that under the same displacement, the weight of an all-aluminum engine is 20kg lighter than the mass of a cast iron engine. Left and right. In addition, the heat dissipation effect of the all-aluminum engine is much better than that of the cast iron engine, which can improve the work efficiency of the engine and is conducive to prolonging the service life of the engine.

2. Cast iron and aluminum alloy cylinder blocks are both good. In the past, the engine cylinder blocks were made of cast iron. The reason is very simple. The corrosion resistance and rust resistance of cast iron material are excellent, and they are also wear-resistant and pressure-resistant.

3. The physical properties of iron and aluminum are different. The heat load capacity of the cylinder block of cast iron is stronger, and the potential of cast iron is greater in terms of engine power increase. It is not only conducive to the start and acceleration of the vehicle, but also can shift gears early to achieve the effect of fuel-saving.

4. From a comprehensive comparison of cast iron engine cylinder blocks, it is superior to all-aluminum engine cylinder blocks. At present, the cylinder blocks of gasoline engines are divided into cast iron and cast aluminum. In diesel engines, cast iron cylinder blocks account for the vast majority. In the production process, there are many differences between cast iron cylinder blocks and cast aluminum cylinder blocks.

5. Aluminum alloy cylinder block, light weight and good earthquake resistance. Due to strict emission regulations, the use of aluminum alloy cylinder blocks has become a trend. EA888 still uses cast iron engines, and aluminum alloy cylinder blocks can also be used in a few years.In addition, the physical properties of aluminum and cast iron are different.

6. The physical properties of iron and aluminum are different. The heat load capacity of the cylinder block of cast iron is stronger, and the potential of cast iron is greater in terms of engine power increase. The output power of a 3-liter cast iron engine can exceed 70kW, while the output power of a cast aluminum engine can only reach 60kW.

Which is better, an all-aluminum engine or a cast iron engine?

Compared with the all-aluminum engine, the all-aluminum engine with the same exhaust volume will be about 20KG lighter in net weight than the cast iron engine. Although this data information is not very large, generally such models will also be lightly set in body materials, such as suspension system materials and other body structural materials. To reduce the net weight of the whole car.

According to the development of history, the first to appear is the cast iron engine, followed by the aluminum alloy engine. The manufacturing process of cast iron engines has lower technical requirements than those of aluminum alloy, but it does not mean that cast iron engines are worse than aluminum alloy engines. In fact, the two types of engines have their own advantages.

Cast iron engines and all-aluminum engines have their own advantages. The advantages of all-aluminum engines are light quality, easy to process and good heat dissipation. The advantages of cast iron engines are deformation resistance, high pressure and high temperature resistance, corrosion resistance, relatively low cost, and great modification potential.

Is an all-aluminum engine necessarily better than a cast iron engine? In the field of naturally aspirated engines, it is also well known that the cost of cast iron engines is lower than that of all-aluminum engines.

In the past, our engine cylinder blocks were made of cast iron, because castIron parts have good corrosion resistance and anti-rust ability, as well as good wear resistance, good cylinder strength, pressure resistance and not easy deformation and other advantages, so many large engines still use cast iron cylinder blocks so far.

In this way, the performance of the engine is greatly affected. There is no such problem with cast iron. In this respect, cast iron cylinder blocks dominate. [ Supplement: Some so-called "all-aluminum" engines also need to use cast iron cylinder lining] Conclusion: Advantages of aluminum head: lightness and good heat dissipation; Advantages of iron head: cheap and durable.