Light-Weight Vehicles in a Low Carbon Economy

Recently, the global economy has been undergoing a green transformation. The automotive industry - a "large producer" of carbon emissions - has also entered the "lightweight era". British laboratory experimental data shows that every 30% reduction in vehicle weight can increase fuel efficiency by 20%-24% and reduce carbon dioxide emissions by 20%. Lightweight is an important way to save energy and reduce emissions in automotive industry, and is also an important development direction for automotive industry under the background of "carbon neutrality".

In the pursuit of an answer to the problem of lightweight car body , high strength steel has come into public sight as the most preferred role. Under the same weight, high strength steel can greatly increase the strength of the car body, thereby improving the vehicle's collision safety performance. However, forming this material is difficult and the rebound phenomenon is also serious, which poses many problems for the manufacturing and debugging of tooling.

The emergence of hot stamping steel provides a perfect solution to the above two problems. Hot stamping steel ensures high strength and stiffness, the structure has a low density, which can greatly meet the needs of a lightweight car body. During the manufacturing process, hot stamping steel can be deeply processed after high temperature treatment, resulting in a better forming effect, the rebound phenomenon is also well controlled.

The composition and properties of hot stamping steel for automotive applications are carefully designed and rigorously selected. This material consists mainly of iron, carbon, manganese, silicon and other elements, of which carbon and manganese are the main strengthening elements. Through a reasonable combination of composition and heat treatment processes, hot stamping steel with excellent properties can be obtained.

In the body-in-white, the main components using hot stamping steel include A-pillars, B-pillars, C-pillars, upper side beams, door sill side beams, central channel, floor crossbar,front panels, etc. These key frame parts of the body use hot stamping parts, which can effectively ensure the integrity of the body frame structure in a collision accident, thereby protecting passengers.