A high-strength steel plate press-quenching die and forming process with a large-scale network forming rib structure

Abstract

The invention discloses a high-strength steel plate pressure quenching die of a large net-shaped forming rib structure and a forming technology. The high-strength steel plate pressure quenching die comprises an upper die and a lower die. Each of the upper die and the lower die comprises a bottom plate. Strengthening ribs are arranged on one face of each bottom plate, and net-shaped forming ribs distributed at equal intervals are arranged on the other face of each bottom plate. Each net-shaped forming rib is formed by vertical staggering of longitudinal forming ribs and transverse forming ribs.The net-shaped forming ribs of the upper die and the lower die are arranged in a mutual face-to-face fit manner. Series installing holes are formed in the longitudinal forming ribs or the transverseforming ribs and internally provided with water spraying branch pipes for quenching cooling. The faces, making contact with a machined part, of the net-shaped forming ribs are quenching work faces, and comb-shaped water flowing grooves are machined in the work faces of the net-shaped forming ribs. Small water spraying holes are drilled in the faces, facing the machined part, of the water sprayingbranch pipes. By means of the high-strength steel plate pressure quenching die of the large net-shaped forming rib structure and the forming technology, high-quality quenching of a large steel plate can be achieved, and the high-strength steel plate pressure quenching die of the large net-shaped forming rib structure and the forming technology have a series of beneficial effects that appearance forming is good, positioning is accurate and fast, quenching cooling is uniform, and the equipment input cost is low.

Description

technical field [0001] The invention relates to the technical field of large-scale steel plate processing, in particular to a high-strength steel plate press-quenching die and a forming process with a large-scale net-shaped forming rib structure. Background technique [0002] In order to meet the requirements of high mobility and protection of special vehicles, many special vehicles at home and abroad are designed with high-strength steel plates. , especially high-end cars and other civilian applications have also been widely used. In order to obtain the high performance index of the steel plate, it is usually necessary to heat the steel plate to austenitization, quenching and rapid cooling, and obtain a uniform martensite structure to make the steel plate The strength reaches more than 1500Mpa. Generally, for large-scale high-strength steel plate quenching, especially for special steel plate manufacturers, most of them are completed by special rolling bottom quenching press...

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Problems solved by technology

When using a forklift to transfer, due to the semi-manual and semi-mechanical operation, it is difficult to accurately position the large steel plate in the high temperature state on the press-quenching forming die. Generally, the design size of the press-quenching die is increased and the steel plate The size of the blank is used to realize press quenching and forming, and then cut the allowance after press quenching. This method brings about the waste of mold manufacturing costs and steel plate raw materials. It is also relatively large; if a manipulator is used for the furnace and transfer, due to the low plasticity of the steel plate in the high temperature state, the large steel plate is relatively easy to deform under the action of gravity, so it must be clamped by a large-scale complete set of manipulators with multiple points, and the equipment investment cost is too high. High, the production site occupies a large area

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