Lost foam casting process of medium frequency induction heating furnace

At present, due to the national attention and the development of domestic chemical industry science and technology, all kinds of equipment and raw materials required for the development of lost die forging technology are all localized, and the requirements for lost die forging can basically be understood. Therefore, in recent years, lost die forging technology has been in the domestic forging industry It's going very quickly.

1. The shape of the foam plastic, whose outer dimensions are completely similar to that of the casting, is preserved in the mold, instead of the "cavity" mold of the traditional sand mold.

2. Use dry sand without binder and vibrate the shape.

3. During pouring, the foam plastic mold continues to vaporize and decompose under the action of high-temperature liquid metal, resulting in a metal-surface replacement process, unlike traditional "cavity" casting which is a liquid metal filling process. To make a casting, a foam plastic mold must be "disappeared".

What is lost die casting? Lost die casting uses a foam mold to replace the metal or wooden mold. The shape is not removed after shaping, and it is a solid cavity. That is, a foam mold that is completely similar to the appearance of the casting is stored in the casting, forming a "real mold". "Mold" casting, instead of the "cavity" casting of traditional sand molds. When pouring molten metal, the foam mold continuously decomposes and vaporizes under the action of high-temperature metal liquid, resulting in a metal-mold replacement process, unlike the traditional "cavity" mold. "Empty" forging is a filling process of metal liquid; the final surface vaporizes to obtain a casting.

Compared with traditional sand casting technology, lost die casting technology has strong process advantages, so it is hailed as "the casting technology of the 21st century" and "green casting engineering" by the domestic and foreign casting circles. my country has included this technology in the machinery industry promotion projects in the three five-year plans of the "Seventh Five-Year Plan", the "Eighth Five-Year Plan" and the "Ninth Five-Year Plan".