How does gravity casting machine work?

May 4, 2020

The gravity casting machine is a series of industrial casting machines that take the molten metal hydraulically into the mold under pressure to form a solid metal casting after cooling.

The metal gravity casting process is a method of combining metal molds with sand cores, which is characterized by a small number of tooling, a short mold manufacturing cycle, and low development costs, and gravity metal mold casting molds can adapt to the continuous adjustment and acceleration of product development, save time to market for new products. The tilting metal mold gravity casting method can reduce casting defects and provide product quality, especially suitable for the production of aluminum alloy castings and brass castings. This casting machine is suitable for producing faucet, household appliances, plumbing fittings, hardware, sanitary ware, auto parts which gravity model casting with brass, zinc, aluminum, steel, iron ore and alloy, ferrous metal and non-ferrous metal.

So how does gravity casting machine work? How to produce castings? like metal parts, auto parts

You can also click the YouTube video link here: “gravity casting machine work process” watch the video to understand the work process of our gravity casting machine more clearly and intuitively.

In the tilting metal mold gravity casting machine process method, the casting mold can be controlled to rotate between the inclined state and the horizontal state, and the pouring mold is cast while the inclined state is turned from the inclined state to the horizontal state.

The specific steps method of the tilting gravity casting machines are as follows:
a) The working table of the casting machine is in a horizontal state, the core is manually lowered, and the casting mold is closed and in a horizontal state;
b) The pouring mold is tilted by a certain angle; the tilt angle is between 0 and 90 °;
c) The casting mold rotates to the horizontal state in the reverse direction, during which casting is performed;
d) The casting mold is fixed in a horizontal state, and the casting begins to solidify.

Let us take the production of aluminum alloy castings as an example:

a) In the initial state, the casting machine workbench is in a horizontal state, manually insert the sand core (automatically insert the sand core, click to understand), and the left and right side molds are closed;
b) After the casting machine is tilted by a certain angle (the angle is adjusted between 0 ° and 90 °), it is in a tilted state and enters the pouring preparation stage;
c) Pour the aluminum alloy in the pouring cup into the casting mold, and at the same time, the casting mold casting returns to the horizontal state. The casting here is completed by pouring a container that is peripheral and cooperates with the casting mold into the casting mold. The peripheral container is fixedly connected to the casting machine worktable or is not fixedly connected, or installed independently of the casting machine worktable Settings. Usually, the peripheral container is a furnace and is independently installed next to the casting machine; the tilting speed of the casting mold to the horizontal state is 5 ° / s ~ 12 ° / s, and the required time is 7 ~ 8s.
d) The casting mold is fixed in a horizontal state. The solidification stage of the casting by tilting gravity casting. After pouring, the casting begins to solidify. After the casting is solidified, the left and right molds are opened, the casting is manually removed, the mold is cleaned, and the next cycle is entered, repeating steps a-d.

 What are the advantages and features of the metal tilting gravity casting machine?

1. The tilting metal mold gravity casting method is applied to the aluminum alloy cylinder body, and its casting and filling process has the characteristics of rapid and stable filling.

2. The aluminum alloy cylinder body adopts a tilting metal type gravity casting method so that the height of the liquid static pressure head gradually increases from small to stable filling, which is conducive to the discharge of gas, and avoids the common gravity casting method due to the large static pressure head. Caused the problem of secondary slagging during filling.

3. By tilting pouring, the filling time and filling speed of the molten aluminum were effectively controlled.

4. The tilting rapid casting process solves the defects of cold insulation and insufficient pouring caused by the cooling of the aluminum liquid during the filling process; when tilting casting is used, the first flow of the molten aluminum is long and the cooling is fast. At the bottom of the mold, And the temperature is low, the flow of aluminum liquid after a filling is short, and the temperature is slow. The aluminum liquid (riser) in the upper part of the mold and the temperature is high. The high temperature in the upper part of the mold can quickly supplement the lower part of the mold. In this way, a reasonable casting solidification temperature field is established, which is beneficial to the solidification and shrinkage of the casting and improves the production yield of the casting.

Delin Machinery is a well-known Chinese foundry machinery manufacturer, which can provide quotation and export of casting machines to various countries. You can click here: gravity casting machine to view more details of our casting machine products.

Our company is a professional manufacturer with years of experience in the production of the automatic gravity casting machine. We have a professional design and production team to produce a high-quality foundry casting machine. If you want to know more details like are we manufacturers? machine function? support video and more pictures? price list? how to buy? Welcome to Send Inquiry or Chat Now or send us Email about any question on the machine, please contact us >>>Tel / WhatsApp / WeChat: +86 13960339790, Email: [email protected]


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