Extremely high material strength and ductility. Generally, the tensile strength of high-strength steel plates is about 400-450MPa, while the tensile strength of hot-formed steel beams has reached 500-800MPa before heating, and it has increased to 1300- 1600MPa after heating forming, which is 3-4 times that of ordinary steel. Its hardness is second only to ceramics, but it has the toughness of steel. Therefore, the car body made of hot-formed steel plate greatly improves the anti-collision ability and overall safety of the car body, and will play a good role in protecting the people inside the car in the collision. Effectively reduce the weight of the whole vehicle and save energy. Because the thermoformed steel plate has extremely high material strength, a thermoformed part can be used to replace several parts of ordinary steel plate in the design. For example, the B-pillar in the middle of the front and rear doors of sagitar models does not need reinforcing beams because of the use of thermoformed steel plates. Under the condition of ensuring the strength, five parts are reduced and the weight is reduced by about 4.5 kilograms, which naturally reduces the fuel consumption of the car and also plays an auxiliary role in reducing the use cost of the owner. Due to the weight reduction of hot-formed steel plates, the total weight of Magotan is close to 10 kg.

Hot-formed steel plate has good material forming accuracy, and complex shapes can be realized by eliminating the influence of material springback. Due to the special properties of hot-formed steel plate and its forming after heating, it is possible for ordinary cold stamping to complete complex shapes that require multiple processes in one process. The technical advantage of one-step forming is to ensure that the fiber flow direction inside the steel plate does not have to be impacted by secondary force during the steel plate processing, thus ensuring that the steel plate maintains the best strength and toughness. Moreover, the parts are cooled quickly after forming, and the springback of the formed parts is very small, which greatly improves the accuracy of material forming, better ensures the dimensional accuracy of the parts, and lays a good foundation for the next body welding. The raw materials of thermoformed steel plates are patented products of European steel giants ThyssenKrupp and ArcelorMittal, and all steel plates need to be imported from Europe. At present, the production lines in China are gradually increasing. By the end of 2065,438+03, more than 65,438+00 production lines will be put into operation.