Oxygenating die-cast formation technology for aluminum die-casting part

Abstract

The invention discloses an oxygenating die-cast formation technology for an aluminum die-casting part. The oxygenating die-cast formation technology includes the following steps: S1, a movable die body, a fixed die body and a movable block of a die-casting die are designed according to the overall structure of the aluminum alloy part; S2, the movable block is designed to be in sliding fit with the fixed die body and can slide out from the fixed die body in the part die-outlet direction; S3, a positioning and fixing position used for positioning and fixing the movable block is designed on the fixed die body; S4, a die-casting machine carries out oxygenation after die assembling is carried out; S5, oxygen is supplemented into a cavity of the die; S6, the cavity is oxygenated; and S7, after carrying out die releasing, the die-casting machine transmits a signal to an oxygenating device to enable the oxygenating device to blow the cavity of the die. According to the oxygenating die-cast formation technology, a gas delivery device for oxygenating the cavity in a staging manner, a gas delivery control method in which the device is used and the special die cavity structure are adopted so that the quality of the oxygenating die-cast casting can be improved.

Description

technical field [0001] The invention relates to the technical field of automobile parts production, in particular to an oxygen-filled die-casting molding process for aluminum die-casting parts. Background technique [0002] In aluminum alloy die-casting products, some special products (such as automobile wheels, high-performance pressure-resistant products, etc.) It cannot meet the special character requirements of less pores in the casting. Generally, the gas content of castings formed by ordinary die casting is 15-30 mg / cm3, the gas content of castings formed by vacuum die casting is 5-10 mg / cm3, and the gas content of castings formed by oxygenated die casting can even reach 3-5 mg / cm3. cm3. Therefore, the oxygen-filled die-casting method can solve the problem of poor porosity to a great extent, so as to obtain die-casting products that meet the performance requirements. There are also some aluminum alloy die-casting parts, which have some special parts in the part stru...

AI Technical Summary

Problems solved by technology

There are also some aluminum alloy die-casting parts, which have some special parts in the part structure. In the die-casting mold design, if the cores for these parts are designed on the movable mold or the fixed mold, it will not be possible to release the mold, and the mold of these parts The core cannot be designed as a slider core-pulling structure

For such parts, die-casting cannot be used for production in the prior art