Martensitic steel forming and trimming full-automatic hot stamping die and forming method

Abstract

The invention relates to the technical field of martensitic steel hot forming, in particular to a martensitic steel forming and trimming full-automatic hot stamping die and a forming method. The martensitic steel forming and trimming full-automatic hot stamping die comprises a female die component, a male die component, upper blank holder components, upper trimming cutter components, lower blank holder components, lower trimming cutter components and a cooling pipe, wherein the female die component is arranged on the upper portion of a stamping machine, the upper trimming cutter components arearranged on two sides of the female die component, the upper blank holder components are arranged on two sides of the upper trimming cutter components, the male die component is arranged on the lowerportion of the stamping machine, the lower trimming cutter components are arranged on two sides of the male die component, and the lower blank holder components are located on two sides of the lowertrimming cutter components. The martensitic steel forming and trimming full-automatic hot stamping die and the forming method have the advantages that integrated slicing, forming and quenching of a hot stamped part can be achieved, a traditional laser cutting procedure can be omitted, and production efficiency is increased greatly.

Description

technical field [0001] The invention relates to the technical field of hot forming of martensitic steel, in particular to a fully automatic hot stamping die and a forming method for forming and trimming martensitic steel. Background technique [0002] With the increasingly high requirements for safety and lightweight in the field of automobile and rail transit, martensitic steel with ultra-high strength has attracted more and more attention. Martensitic steel is dominated by martensitic structure, and its tensile strength can reach 1500MPa. On the premise of ensuring safety, it realizes light weight by reducing the thickness of the steel plate, so it has been widely used in the automobile and rail transit industries. application. However, cold stamping of martensitic steels suffers from cracking, springback, and thinning issues that limit the use of these materials. [0003] The hot stamping forming technology is to heat the low alloy martensitic steel to the austenitizati...

AI Technical Summary

Problems solved by technology

In the above scheme, when cooling and quenching are started, since the change of martensite occurs instantaneously and is uncontrollable, it is impossible to achieve accurate trimming by punching under such a rapid change and unavailable condition, and it cuts off during punching. There is no way to discharge the waste, and it can be seen that the above scheme is only a theoretical design, and it is not feasible in reality.

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