A kind of double method lost foam casting aluminum process

Abstract

The invention relates to the technical field of lost foam casting, in particular to a duplex method lost foam casting aluminum process, the forming device used in the process includes a bottom plate, a side mold, an upper mold and a controller; the upper end of the bottom plate is fixedly connected with Four support plates; the upper ends of the four support plates are fixedly connected to the top plate; two side forms are arranged between the bottom plate and the top plate; the two side forms are arranged opposite each other, and each side form passes through the No. 1 hydraulic cylinder Fixed on the corresponding support plate, the inner wall of one of the side molds is connected with an injection molding machine through a hose; the injection molding machine is fixed on the upper end of the bottom plate; an upper mold is provided between the side mold and the top plate; The molding device used in the dual lost foam casting process uses an air pump to inflate the inner wall of the upper mold and cooperate with the No. 1 hydraulic cylinder to drive the movement of the side mold, so that the foam model after detaching from the upper mold moves to the side mold. The upper end improves the efficiency of taking out the foam model and protects the foam model from being damaged during the demoulding process.

Description

technical field [0001] The invention relates to the technical field of lost foam casting, in particular to a double lost foam casting aluminum process. Background technique [0002] Lost foam casting, also known as solid casting, is made of foamed plastic (EPS, STMMA or EPMMA) polymer material to form a solid mold with exactly the same structure and size as the part to be cast, after dipping refractory coating (strengthening, Clean, air-permeable) and dried, buried in dry quartz sand and subjected to three-dimensional vibration modeling, pouring molten metal into the casting mold sand box under negative pressure, so that the polymer material model is heated and gasified, then drawn out by the liquid The metal replaces the one-time molding casting formed after cooling and solidification. A new casting method for producing castings; the existing foam model is taken out by hand, and the foam model is attached to the upper mold to form an atmospheric pressure. Strong, so it is ...

AI Technical Summary

Problems solved by technology

[0002] Lost foam casting, also known as solid casting, is made of foamed plastic (EPS, STMMA or EPMMA) polymer material to form a solid mold with exactly the same structure and size as the part to be cast, after dipping refractory coating (strengthening, Clean, air-permeable) and dried, buried in dry quartz sand and subjected to three-dimensional vibration modeling, pouring molten metal into the casting mold sand box under negative pressure, so that the polymer material model is heated and gasified, then drawn out by the liquid The metal replaces the one-time molding casting formed after cooling and solidification. A new casting method for producing castings; the existing foam model is taken out by hand, and the foam model is attached to the upper mold to form an atmospheric pressure. Strong, so it is difficult for the staff to remove it, and it is easy to cause damage during the removal process, and the removal efficiency is low. Cause the foam model to collide with the lower plate, which will cause damage to the foam model and affect the shape of the aluminum part after casting

[0003] In the prior art, there are also some technical solutions about the dual-process lost foam casting aluminum process. For example, a patent with the application number CN201610681887.4 discloses a dual-process lost foam casting aluminum process. The solid aluminum alloy ingot removes the oxide layer, cleans it and puts it into the gas furnace, so that the aluminum alloy ingot rises from room temperature to near the melting point of the aluminum alloy in the gas furnace, and then transfers it to the intermediate frequency furnace to continue heating to complete the alloying and temperature rise to the casting temperature, and finally pour the aluminum alloy liquid into the degassing and refining heating ladle, slag and degassing, and heat up to the casting temperature for pouring or transfer to the holding furnace, and then transfer to the ladle or ladle for pouring; the technical solution is passed The use of gas furnace and intermediate frequency furnace for lost foam aluminum casting reduces the cost of lost foam casting aluminum and improves the quality of castings; however, this technical solution still cannot solve the difficulty of demoulding the foam model, low efficiency and easy damage problems, resulting in the limitations of the program

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