A hot stamping and quenching integrated treatment method based on hydroforming device

A technology of hydroforming and processing method, which is applied in the field of metal thermal processing, and can solve problems such as lack of martensitic structure, failure of high-strength steel to reach critical cooling rate, uneven strength of final formed parts, etc., to improve quality, The effect of solving the problem of uneven strength
CN111229905BActive Publication Date: 2021-06-11ANHUI UNIVERSITY OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ANHUI UNIVERSITY OF TECHNOLOGY
Publication Date
2021-06-11

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Abstract

The invention discloses an integrated treatment method of hot stamping and quenching based on a hydroforming device, which belongs to the technical field of hot stamping. The method of the invention includes the following steps: placing a blank in a heating furnace to keep it warm to make the blank austenitized; and then austenitizing the blank The billet moves quickly to the mold, and the liquid level in the liquid pool of the hydraulic mold maintains a certain height and ensures that it does not touch the formed part after the mold is pressed; the mold is closed quickly, and at the same time, the hydraulic machine connected to the liquid pool is started, and the piston moves down to make the liquid in the pool The liquid contacts the high-temperature formed part and quickly forms and maintains a certain pressure for quenching; after quenching, the pressure is maintained for a period of time, the piston moves up, the mold opens, and finally the formed part is obtained. The invention can realize the quenching of high-temperature formed parts in the mold, so that the formed parts can obtain complete martensitic structure, ensure the high strength of the formed parts and improve the dimensional accuracy of the formed parts.
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Description

Technical field:

[0001] The invention belongs to the technical field of metal thermal processing, and relates to a quenching-controlled hot stamping method, in particular to an integrated treatment method of hot stamping and quenching based on a hydroforming device. The method uses a hydroforming device to realize the integration of hot stamping and quenching, which ensures the uniformity of strength of the final formed part.

[0002] technical background:

[0003] In recent years, the use of advanced high-strength steel plates to form body parts can significantly improve the safety performance of passenger cars, reduce the weight of the body, and reduce fuel consumption. For traditional cold stamping, for high-strength steel forming, body parts are not only easy to break during the forming process, but also prone to springback, which affects subsequent body assembly. For high-strength steel with a strength exceeding 1000MPa, the traditional cold stamping process is often in...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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