Cold-hot compound stamping forming method for steel plate with ultrahigh strength

A high-strength steel plate and stamping forming technology, applied in the field of hot stamping, can solve the problems of high cost and low laser cutting accuracy, and achieve the effects of improving production efficiency, ensuring dimensional accuracy and reducing production costs.

Inactive Publication Date: 2012-10-17
JILIN RUIHENG MACHINERY
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Problems solved by technology

[0006] The invention provides a cold-hot composite stamping forming method for high-strength steel stamping parts, which...

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  • Cold-hot compound stamping forming method for steel plate with ultrahigh strength

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Embodiment Construction

[0014] The content of the present invention and its specific implementation will be further described below in conjunction with the accompanying drawings.

[0015] The figure shows the cold-hot composite stamping forming method. The steel plate 1 is first blanked on the blanking press 3, and then transferred to the cold forming press by the manipulator 4. Because the steel plate before hot forming has low hardness and good plasticity After the stamping of the cold forming die, the precise forming, edge trimming, punching and other operations of the steel plate can be completed. The cold formed stamping parts are transferred to the heating furnace by the manipulator for heating and kept for a period of time to make the plate completely austenitic. The heating temperature and holding time are affected by many factors such as the thickness of the steel plate, thermal physical properties, and the heating efficiency of the heating furnace. Generally, for plates with a thickness belo...

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Abstract

The invention discloses a cold-hot compound stamping forming method for a steel plate with an ultrahigh strength, belonging to the field of hot stamping forming. Working procedures of trimming, punching and the like for sheet metal are finished for the steel plate via a cold forming process at first, and the cold-formed-stamped part completely has the shape, structure and dimensional accuracy of drawing requirements. The cold-formed-stamped part is heated to be completely austenitized, and then purposes of keeping the original dimensional accuracy and quenching are achieved via a hot forming mould. The cold-hot compound stamping forming method disclosed by the invention successfully solves the problems of low accuracy and high cost of laser trimming and punching for the traditional hot-formed-stamped part; and compared with the traditional hot forming process, the cold-hot compound stamping forming method disclosed by the invention fundamentally improves the dimensional accuracy of the stamped part, increases production efficiency, decreases production cost, and plays an important role in promoting production practice.

Description

technical field [0001] The invention relates to a cold-heat composite stamping forming method of an ultra-high-strength steel plate, and belongs to the technical field of hot stamping forming. Background technique [0002] Hot forming technology, also known as "stamping hardening" technology, is specially used to manufacture high-strength steel stamping parts. Compared with cold forming method, its biggest advantage is that the formed workpiece has high strength. It is widely used in the field of automobile manufacturing. While improving the safety performance of automobiles, it can achieve the purpose of reducing the weight of the vehicle body and truly realize energy saving and emission reduction. As an advanced automobile lightweight technology, it has a good development prospect. [0003] The stamped parts after thermoforming have high strength and hardness, which brings great difficulties to subsequent trimming and punching, which hinders the popularization and applicat...

Claims

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Application Information

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IPC IPC(8): B21D35/00
Inventor 马丽朱丽娟马东升
Owner JILIN RUIHENG MACHINERY
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