A lost foam casting process for aluminum processing

Abstract

The invention relates to an aluminum processing lost foam casting process. The process comprises the following steps of 1, smelting an aluminum blank material; 2, manufacturing a gasified mold; 3, fixing a sand box; 4, placing the mold and filling the sand box; 5, pouring a casting; and 6, taking out of the casting. In the step 2, the gasified mold raw materials are subjected to foaming forming, the gasified mold is ground and coated with fire-resistant paint, and drying treatment is carried out; in the step 3, the sand box is placed in a fixing device used for fixing the sand box; in the step5, a sand box opening is covered with a plastic film, a pouring cup is placed, a negative pressure system is connected, molten aluminum casting is carried out after compacting, and casting of the casting is completed; and in the step 6, the vacuum is released after the casting is condensed, and the casting is taken out from the sand box. The aluminum processing lost foam casting process can be used for solving the problems that in the existing aluminum product lost foam construction process, the sand box can move in real time in the sand vibration, the sand box can be overturned manually to be not in place, the falling hidden danger exists when the sand box is overturned, the casting cannot be flexibly supported, and that when the casting is placed, the hidden danger of overturning and the like.

Description

technical field [0001] The invention relates to the technical field of aluminum processing, in particular to an aluminum processing lost foam casting process. Background technique [0002] The smelting and casting of aluminum is the most common existing aluminum processing method. The lost foam casting method is one of the aluminum casting processes. The lost foam casting is to bond and combine paraffin or foam models similar in size and shape to the castings to form a model. After being coated with refractory paint and dried, it is buried in a sand box for vibration molding, and poured under negative pressure to vaporize the model. The liquid metal occupies the position of the model and solidifies and cools to form a new casting method. The advantages of the lost foam casting method are as follows : High casting precision. Lost foam casting is a new technology with nearly no allowance and precise molding. This technology does not need to take molds, has no parting surface a...

AI Technical Summary

Problems solved by technology

[0003] The problems existing in the construction of the lost foam casting method are as follows. The sand box will move in real time during the sand vibration, causing the hidden danger of the sand box falling from the three-dimensional vibrating table. When the casting is completed, the sand box needs to be manually turned over, causing manual labor. The quantity is large, and the weight of the sand box is very large. Many people are required to cooperate to turn the sand box. If the sand box is not turned in place manually, there is a hidden danger of dropping the sand box. When the casting is placed, the casting cannot be flexibly supported, and Castings may fall from the sand box causing damage to the castings

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