What Are The Characteristics of Gravity Casting Machines?

Unique Working Principle: Gravity die casting machines utilize standard air pressure to pressurize products and solidify them. Specifically, under the influence of gas pressure or inert gas working pressure, the molten metal rises through a riser tube (liquid feed tube) submerged in the molten metal, being forced into a mold connected to the furnace. The molten metal gradually fills the mold, solidifying after a period under pressure to produce the final casting.

High Casting Quality: Gravity die casting can produce castings that closely match the final shape and dimensions of the parts, with good surface quality, high dimensional accuracy, low scrap rates, and minimal casting defects. This is due to the fact that during the gravity die casting process, the molten metal fills the mold under pressure, allowing for good fluidity and effectively minimizing defects like porosity and inclusions.

Strong Adaptability: Gravity die casting machines can be used to cast various metal alloys and non-metallic materials, producing castings of various complex shapes. This strong adaptability makes gravity die casting machines widely applicable across multiple industries.

Simple Operation, Stable Production: The operation of gravity die casting machines is relatively simple and easy to master. Additionally, since the molten metal solidifies under pressure during the casting process, the production process is stable and easy to control.

Long Mold Life: Due to the smooth filling speed and stable flow of the molten metal during gravity die casting, molds experience less erosion and thermal shock, making them less prone to damage and resulting in a longer service life.

Eco-Friendly and Energy-Saving: During the casting process, the molten metal solidifies in a closed mold, reducing oxidation and splashing of the metal, which is beneficial for environmental protection and energy conservation.

However, gravity die casting machines also have some limitations, such as higher equipment investment, complex and costly mold manufacturing, and relatively longer production cycles. Therefore, when deciding whether to use a gravity die casting machine, it is necessary to consider specific production needs and conditions comprehensively.