Rapid wheel progressive solidification forming device and method based on multiple lift tubes

Abstract

The invention discloses a rapid wheel forming device and method based on multiple lift tubes. The multiple lift tubes are arranged in a melt heat preserving furnace connected with a gas source, the upper portions of the lift tubes are connected with a sprue of a mold through a heat preserving cup and a sprue brush, the lower portions of the lift tubes are immersed in metal melt, when gas pressureis adopted for carrying out pressurizing on the metal melt in the furnace, the melt can rise along the lift tubes, and enters a mold cavity through the sprue, the sprue of the mold is arranged on thering face under a rim of a wheel, meanwhile, the invention discloses a mold filling solidification pressurizing method adapting to the device, at the solidification pressure maintaining stage after mold filling is finished, high-pressure gas is adopted for carrying out pressurizing feeding on the melt on the position of the sprue, possibility of shrinkage porosity forming of a shrinkage cavity canbe removed, the mold filling distance of the metal melt is shortened by more than one half compared with an existing stage, the long-distance feeding problem of a large-size wheel can be solved, andthe wheel mechanical property can be obviously improved.

Description

technical field [0001] The invention relates to the field of casting technology, in particular to a rapid sequential solidification forming device and method for aluminum alloy wheels based on multi-liter liquid tubes. Background technique [0002] Lightweight is one of the most important ways for fuel vehicles to save energy and reduce emissions, and for new energy vehicles to reduce consumption and increase range. Replacing traditional steel materials with lightweight materials such as aluminum alloys has become an inevitable choice for vehicle design renewal. Aluminum alloys used in automobiles can be divided into cast aluminum alloys and deformed aluminum alloys. Cast aluminum alloys dominate and are mainly used to manufacture engines, clutch housings, wheels, chassis parts and other components. With the demand for improved wheel quality and the development of casting technology, more parts are produced by low-pressure casting, differential pressure casting and pressure-...

AI Technical Summary

Problems solved by technology

[0005] However, the above-mentioned devices and methods also have obvious defects. For the way that the aluminum liquid only enters from the rim, the entrance is set in the middle of the rim, and after entering, it will cause a diversion, that is, it will fill the wheel center and the rim at the same time, resulting in various places. The filling time of the mold is uncontrollable, resulting in uncontrollable solidification sequence, which is easy to form shrinkage cavity and shrinkage defects

For the method of combining the center gate and the gates on both sides, since the aluminum liquid enters from the two inlets, a confluence will be formed in the middle position, which is easy to cause breakpoints due to unsmooth gas discharge.

Images