Views: 14 Author: Site Editor Publish Time: 2016-10-21 Origin: Site
According to the need of the production of castings, advance preparation good casting and some of the chemical composition of the liquid metal or alloy.Then under the action of gravity or other force to injection mold liquid alloy materials, including filling is full and has important influence on the final quality of castings, especially for some complex shape, large wall thickness difference or easy oxidation of the alloy is more important.
There are two basic liquid metal forming process: filling mold and cooling solidification.The two basic process can be completed in under the action of gravity field or other force.Filling mold (also known as casting) is primarily a speed change of mechanical process, cooling.
Crystallization and solidification of liquid alloy material is the core problem of the formation process of castings, it largely determines the casting as-cast organization and the formation of some casting defects, because the material once solidified into a solid, almost in the subsequent processing other element method make quality has essentially changed, so the cooling and solidification of casting quality, especially the as-cast mechanical properties, plays a decisive role.Control during solidification to improve casting quality, obtain required by the organization and performance, is the important content of foundry technology.
