Hot stamping device

Abstract

The invention discloses a hot stamping device which comprises a die and a heating cover. The die is covered with the heating cover so that the heating cover can heat the die and a blank in the die. According to the hot stamping device, the process of conveying the heated blank into the die can be omitted, and therefore the problems that the blank is oxidized and heat losses are caused can be solved; and furthermore, some steps of a hot stamping forming technology can be omitted, the steps of the hot stamping forming technology can be simple, and the automation rate is high. In addition, the hot stamping device is simple in structure, and cost of equipment needed for hot stamping forming can be reduced.

Description

technical field [0001] The invention relates to the technical field of hot stamping, in particular to a hot stamping device. Background technique [0002] With energy saving and emission reduction becoming one of the main development directions of the current country and the world, automobile companies have also begun to use high-strength steel plates or even ultra-high-strength steel plates to reduce the weight of the car body. , an effective way to achieve energy saving and emission reduction. [0003] Hot stamping forming technology is a new technology specially used for forming high-strength steel stamping parts. The blank is heated to above 950°C in a heating furnace, then transferred to a mold for stamping, and then quenched under pressure in the mold for a period of time. The stamping parts produced by this method are martensitic in structure and their strength is as high as 1500MPa. [0004] However, in actual production, the hot stamping technology has the followi...

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Problems solved by technology

[0004] However, in actual production, the hot stamping technology has the following problems: 1. The hot stamping forming process is relatively complicated, with many steps and low automation rate; 2. After the billet is heated in the heating furnace, it is transported to the mold. Among them, the problems of billet oxidation and heat loss are relatively serious, resulting in insufficient content of martensite in the subsequent quenching, and the performance is not up to standard; 3. The stamping parts are cooled through the cooling water channel in the mold, the mold processing is complicated, and the precision requirements are high. Production and maintenance Expensive; 4. Because the stamping parts are not in direct contact with the cooling water, the cooling speed is slow, the time required for pressure quenching in the mold is longer, and the production cycle is longer

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