Casting Process Of Grey-cast Iron

Casting industry said "three good" namely: good molten iron, good sand, good technology. Casting process in the manufacture of casting is one of the three elements with molten iron, sand parallel, if it is ignored, absolutely can not do a good casting. In the sand type, the model is used to make the casting, so that the molten iron flows into the cavity and make the casting, the casting process is the technology to study the path and method of its inflow. The casting is divided into: gate: the inlet of the iron from the iron package into the cast. Often in order to make the pouring amount uniform, remove the inclusion in the iron water, the slag pouring cup is provided. Under the watering mouth cup is the straight pouring channel. Horizontal pouring channel: the horizontal part of molten iron from the direct pouring channel to the cavity. Inner pouring: refers to the part where molten iron enters the cavity from the transverse pouring channel. Casting as a common saying is called "weir", which is an important part of the craft. Air vent: it is the hole that discharges the air inside the cavity with the filling type of molten iron. If the air permeability of the sand is appropriate, it is generally unnecessary. Exit: it is the inclusion in the iron water and the debris in the casting to the outlet, but due to the cooling shrinkage of the casting, the volume is called the filling outlet, this kind of bold mouth is large.