Hot stamping die of integrated cooling pipeline

Abstract

The invention relates to a hot stamping die of an integrated cooling pipeline, belonging to the field of hot stamping and molding. The die comprises the following main parts: a concave die, a convex die, a cooling supporting block of the concave die and the convex die, and the like. By utilizing a water flow cooling mode, the hot stamping die avoids that the flow rate of cooling water close to a straight cooling pipeline has obvious difference from the flow rate of cooling water of a further part by a method that two-stage water flow buffering is adopted at a water inlet. A series of natural shape cooling water channels are formed in the hot stamping die by combining the shape of a molding piece, and the purposes of cooling and quenching of the molding piece are achieved through the direct heat exchange of the cooling water and the die so as to guarantee the uniform structure and the molding quality of the molding piece. The invention can solve the problem that a large-size complicated hog stamping die needs to be segmented during drilling and cooling at present so as to effectively solve the problem of difficult cooling of the hot stamping die at present. The cooling supporting block of the concave die and the convex die is made of non-die steel, and the die cost and the requirement on the die material of the molding piece are reduced through rust-proof treatment.

Description

Technical field: [0001] The invention relates to a hot stamping mold for an integral cooling pipeline, which belongs to the field of hot stamping forming. Background technique: [0002] The global energy crisis and the aggravation of environmental problems make energy saving, environmental protection and safety the main development direction of the automobile manufacturing industry. Ultra-high-strength steel has the dual advantages of reducing the weight of the car body and improving safety, and its usage in the vehicle manufacturing industry has increased significantly year by year. Compared with ordinary steel plates, ultra-high-strength steel plates have higher yield stress and tensile strength, and their formability is worse than ordinary steel plates, and the higher the strength, the more difficult it is to form. Under normal temperature conditions, ultra-high-strength steel plates require a large stamping force, are prone to cracking, and have severe springback. Hot ...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a hot stamping die with integral cooling pipeline, which mainly solves the problems of segmented hot stamping forming die, complex cooling system structure and uneven cooling

Images