How about the development of basic raw materials for auto parts in China?

2019-12-20 10:17:41

In theory, the metal parts of the whole car can be basically made of aluminum alloy. Aluminum alloy is a kind of non-ferrous structural material widely used in industry, which has been widely used in aviation, aerospace, automobile, machinery manufacturing, ship and chemical industry. With the rapid development of industrial economy, the demand for aluminum alloy welded structural parts is increasing day by day, which makes the research on the weldability of aluminum alloy in-depth.

Aluminum alloy has low density, but high strength, close to or more than high-quality steel, good plasticity, and can be processed into various profiles, with excellent conductivity, thermal conductivity and corrosion resistance. It is widely used in industry, and its usage is only less than that of steel. Some aluminum alloys can be heat treated to obtain good mechanical properties, physical properties and corrosion resistance. The AI Cu mg system of duralumin alloy, which generally contains a small amount of Mn, can be heat treated and strengthened. It is characterized by high hardness but poor plasticity. Superhard aluminum belongs to Al Cu mg Zn system, which can be strengthened by heat treatment. It is an aluminum alloy with high strength at room temperature, but it has poor corrosion resistance and rapid softening at high temperature. Wrought aluminum alloy is mainly Al Zn mg SI system alloy. Although there are many kinds of elements added, the content is less, so it has excellent thermoplasticity and is suitable for forging, so it is also called forged aluminum alloy.

The quality, process and stability of parts and components are mainly related to the quality and stability of basic raw materials and components. It can be said that raw materials and components are the basis of high-quality auto parts. According to the reporter's interview, at present, the performance of domestic raw materials and components is not enough and the consistency is not good, which leads to the quality of parts not meeting the requirements. The "four bases" of parts industry are backward in an all-round way, and the primary development is the key basic materials. Due to the industry's neglect of the development of basic materials, there is no cooperation between upstream and downstream enterprises, resulting in the performance of independent parts products has been unable to improve. "The problem of raw materials is a common puzzle in the development of the industry. In addition, some key raw materials have to be imported, which is also the reason why the performance of some independent parts cannot be recognized by the market. The primary development of "four bases" in automobile industry is basic raw materials.

one can't make bricks without straw. If the basic raw materials cannot be developed, facing the new normal of the automobile industry which will last for 3-5 years in the future, the increasingly strict competition environment will make our own brand vehicles and parts will be greatly impacted. It can be said that the key basic materials are related to the realization of the automobile industry in our country.

At present, there are many applications in automobiles:

1. All aluminum engine. There are a lot of models to be used, so I won't give you examples one by one.

2. All aluminum body. The common one is Audi A8.

3. Hub.

4. Some parts. Such as sheep horn and swing arm in suspension system.

5. Some peripheral products. Such as roof rack, etc.

The big advantage of aluminum alloy is light, but the cost is also high, and there are some physical characteristics limitations. At present, it is also limited to be used in automobiles (the cost control of manufacturers is very strict).