Heating equipment and stamping process of high-strength steel medium-thickness plate blank for automobile axle housing

Abstract

The invention discloses heating equipment and a stamping process for a high-strength steel medium-thickness plate blank for an automobile axle housing, and relates to the technical field of stamping forming. According to the equipment, a linear heating module is arranged at the bridge package bending position of a plate blank, an annular heating module is arranged at the square-circle transition position, and heating modules of different models are replaced to adapt to the plate blanks of different models; an annular heating element and a linear heating element are installed in the annular heating module and the linear heating module respectively, the section contours of the inner walls of the heating modules are both in an oval shape, and the heating units and the plate blank are located at the two focal points of the oval respectively. The process comprises the steps that the circulating cooling system is started, all the heating modules are started, the atmosphere protection system and the safety monitoring system are started, local heating is conducted on the bridge package bending position and the square-circle transition position of a plate blank, and the plate blank is transferred to a punching machine after local heating is completed. According to the equipment and the matched differential temperature stamping process, the forming pressure of the medium and heavy plate axle housing is reduced, cracking of the two positions in the stamping process is prevented, the die abrasion is small, the product percent of pass is high, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of stamping and forming, in particular to a heating equipment and a stamping process for medium and thick slabs of high-strength steel used for automobile axle housings. Background technique [0002] The stamped-welded axle housing is welded by two stamped-formed half-axle housings. The stamping production of the half-axle housing is different from the thin-plate stamping process. On the one hand, in the process of cold stamping, due to the influence of the thickness of the plate, failure behaviors such as cracking and scratching are easy to occur at the two typical positions of the transition of the axle housing and the bending of the axle housing. The tonnage of the press required in the cold stamping process is large, and the wear of the mold during the production process is very serious, which significantly affects the forming quality of the axle housing. and production costs are high. SUMMARY OF THE ...

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Problems solved by technology

On the one hand, in the process of cold stamping, due to the influence of plate thickness characteristics, failure behaviors such as cracking and scratching are likely to occur at two typical positions at the transition of the axle housing radius and the bending position of the axle housing and axle package. In addition, due to the thickness of the plate The tonnage of the press required for the cold stamping process is large, and the wear and tear on the mold during the production process is very serious, which significantly affects the forming quality of the axle housing; and high production costs

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