Cooling system of ultra-high strength steel hot stamping forming die

Abstract

The invention discloses a cooling system used for an ultra-high strength steel plate thermal die cutting and forming die. The die comprises a concave die and a concave die seat; a water chamber is arranged between the concave die and the concave die seat; the water chamber is communicated with a water inlet and a water outlet. The water chamber is arranged between the concave die and the concave die seat of the invention; after cooled water is inlet in the water chamber, a steel plate workpiece can be quickly cooled by the thermal conduction between the die and the steel plate so as to meet the quenching condition of the steel plate. Especially, the water chamber is also internally provided with a supporting column; the upper end of the supporting column is contacted with the lower bottom surface of the concave die; the lower end of the supporting column is contacted with the upper bottom surface of the concave die seat; therefore, the structural strength of the concave die is ensured, the flowing direction of the water flow can be guided, flow perturbation conditions can be provided, meanwhile, the heat transfer area is increased, and the heat exchange efficiency between the cooled water and the die is improved.

Description

technical field [0001] The invention relates to a hot stamping forming die, in particular to a cooling system for a hot stamping forming die of an ultra-high-strength steel plate. Background technique [0002] Hot forming technology can solve the limitations of the formability of ultra-high-strength steel plates. It is used in automobile bodies to manufacture load-bearing parts with complex shapes and ultra-high strength. It can not only improve the safety of automobiles, but also reduce the weight of automobiles and improve energy-saving of automobiles. environmental protection. However, all countries face the problem of system heat balance when using this technology in actual production: on the one hand, the hot forming technology requires the steel plate to be cooled rapidly from above the recrystallization temperature at a speed of more than 20m / s; on the other hand, the cooling of the mold and the steel plate takes time problems, which limit the production efficiency; ...

AI Technical Summary

Problems solved by technology

However, all countries face the problem of system heat balance when using this technology in actual production: on the one hand, the hot forming technology requires the steel plate to be cooled rapidly from above the recrystallization temperature at a speed of more than 20m / s; on the other hand, the cooling of the mold and the steel plate takes time problem, which limits production efficiency; in addition, unlike traditional cold stamping, hot forming puts forward higher requirements for production safety

[0004] The cooling system of the stamping die in the prior art is difficult to meet the above requirements

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