High-temperature splicing and quenching forming process and device of ultrahigh-strength steel

Abstract

The invention discloses a high-temperature splicing and quenching forming process of ultrahigh-strength steel. The process is characterized in that heat transfer with different degrees is performed in different regions of a part in forming and in-mold cooling processes, thus the strength and hardness are distributed according to requirements and the random splicing of the high strength and energyabsorption property of the material is achieved. At the same time, the invention also discloses a device for the process. The male mold and female mold of the device are formed by splicing one and more than one insert according to the requirement, and the male mold and the female mold are combined in five different combination modes. The process and device can ensure that the part has different mechanical properties in the different regions after one-time hot forming is finished, and can be applied to the production of automobile anti-collision parts (such as anti-collision beams, pillars A, pillars B, automobile body floor passageway and the like).

Description

Technical field [0001] The invention relates to a high-temperature splicing quenching forming process and device for ultra-high-strength steel. Background technique [0002] As energy and environmental issues become increasingly prominent, and people’s requirements for the safety, reliability, and comfort of cars have increased, major automakers have worked hard to improve the structural design of their cars and find new alternative materials. The weight of the car; continuous improvement and the use of new parts manufacturing technology to improve the quality of the product. The research and use of ultra-high-strength steel has improved the collision performance of automobiles and achieved the requirements of lightweight. However, ultra-high-strength steel has poor deformability at room temperature. On the one hand, the ultra-high-strength steel plate has high strength, a narrow plastic deformation range at room temperature, and large punching force required, which is easy to ...

AI Technical Summary

Problems solved by technology

However, tailor welding technology also has its disadvantages: the movement of the weld seam will cause the decline of the formability of the steel plate, the movement of the weld seam will cause the wear of the mold surface, and the laser tailor welding equipment is expensive

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