Aluminum bronze casting molten casting process

Abstract

The invention discloses an aluminum bronze casting molten casting process. The process includes the following steps: preparation of a wax mold, preparation of a form shell, dewaxing, form shell roasting and forming casting. The preparation of the wax mold includes melting paraffin and forming the paraffin into the wax mold. The wax mold includes a U-shaped flow channel and multiple part bodies. The U-shaped flow channel is composed of a first direct flow section, a second direct flow section and an arc connection section. The arc connection section is connected to a ceramic filter. The multiple part bodies are symmetrically arranged on the two sides of the second direct flow section. During the forming casting, a bottom pouring type casting process is adopted to pour molten liquid metal upward from the bottom of the first direct flow section through the first direct flow section, and the liquid metal flows through the ceramic filter, is finally injected to the part bodies and formed into a part to be prepared. The process optimizes the form of the flow channel, reduces a large amount of casting defects caused by turbulent flows in a conventional signal flow channel, and is more convenient to slag avoidance.

Description

technical field [0001] The invention relates to a fusion casting process for aluminum bronze castings. Background technique [0002] With the development of industry, various industries are developing rapidly, and the mold industry is one of the most widely used. Molds are various molds and tools used in industrial production for injection molding, blow molding, extrusion, die-casting or forging forming, smelting, stamping and other methods to obtain the required products. The shape of the article is mainly realized by changing the physical state of the formed material. Processing, known as the "Mother of Industry". [0003] In recent years, a large number of investment models have been tried. Investment models are molds that can be melted in hot water or steam. Investment casting process, simply put, is to make a fusible model with fusible materials, coat several layers of special refractory coatings on it, dry and harden to form an integral shell, and then use steam or h...

AI Technical Summary

Problems solved by technology

However, the existing investment casting process has poor fluidity and may encounter problems such as decarburization, cracking and folding, which brings inconvenience to people's production

[0004] Especially now that the top injection process is widely used in melting casting, its molding quality cannot be guaranteed, there will be more slag inclusions inside, and the probability of typical casting defects in the product is relatively high

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