A new energy all-aluminum body with tilting gravity sand core casting ab pillar technology

Abstract

The invention discloses a tilting-gravity-sand-core casting technology for an AB column for a new-energy aluminum vehicle body. A metallic external mold is selected, pouring is carried out through a tilting-gravity casting device, and the integrated-formed effect is achieved; during pouring, a sand column is used in the inside, the complex-structure requirement can be met, and a casting is finallyheated to improve the tensile strength and the extending rate. According to the tilting-gravity-sand-core casting technology, production efficiency can be greatly improved, the product quality is improved, common gravity casting is used, the production cost is low, and the tilting mode is used during production.

Description

technical field [0001] The invention relates to a casting process, in particular to a process for casting an AB column with a tilting gravity sand core for a new energy all-aluminum vehicle body. Background technique [0002] The current automotive AB pillar products generally adopt sheet metal structure, because the 3-4mm thick steel plate material used is very heavy and cannot meet the current lightweight design requirements; and it is not integrally formed after extrusion, and it is not integrated with other aluminum structures of the body The parts can only be riveted; some AB columns are formed by extrusion, and the product structure produced by this forming method is simple; and the stress release causes serious deformation and springback; the aluminum-magnesium alloy suitable for extrusion forming has low strength and cannot be heat treated. The strength is low, and structural parts with complex structures cannot be produced; and many structures cannot be integrally f...

AI Technical Summary

Problems solved by technology

[0002] The current automotive AB pillar products generally adopt sheet metal structure, because the 3-4mm thick steel plate material used is very heavy and cannot meet the current lightweight design requirements; and it is not integrally formed after extrusion, and it is not integrated with other aluminum structures of the body The parts can only be riveted; some AB columns are formed by extrusion, and the product structure produced by this forming method is simple; and the stress release causes serious deformation and springback; the aluminum-magnesium alloy suitable for extrusion forming has low strength and cannot be heat treated. The strength is low, and structural parts with complex structures cannot be produced; and many structures cannot be integrally formed; the foreign AB column sand box casting method takes a long time for sand molding; the modification of the plan is complicated, and the model needs to be modified first to realize the modification of the sand core or sand mold; pouring The post-cooling time is long; sand shakeout and sand treatment and recovery need to invest a lot of equipment, and the cost is high

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