A basic rule of design of gating system of castings to be followed

The main function of gating system is to make the molten metal into the mold cavity. Design of gating system for goodneed basic principle of liquid flow. In order to avoid getting involved in order to ensure the integrity of the casting andthe thinnest region filling air, liquid metal cavity filling flow rate should be reduced as much as possible. The gating system typically includes the pouring cup, sprue, runner and gate.

In order to avoid shrinkage defects, thick and large area of castings to feeding during solidification, which is why the actual production will cause of casting gate set in thethicker regions.

The design of gating system need to follow a few basic rules:

1) if the casting section of a plurality of different thickness,the need to consider the design adopts a plurality of gating system. This design is also applicable to the casting of large castings, to shorten the filling time and avoid the runner sand overheating.

2) should be avoided in the opposite will gate placed insand core or mold wall. This design will cause the liquid metal spatter and porosity.

3) pouring cup and the sprue diameter ratio of the gating system on the filling process is in the full state.

4) gating system should be based on guaranteeing theminimum velocity of liquid metal flow, realize the maximization of the. This will help avoid the turbulent flow of liquid metal and reduce gas involved in.

5) the design of gating system needs to ensure the casting solidification sequence.

6) for the design of gating system, should try to avoiddrastic mutation flow direction and section.

Basic guidelines on the design of gating system of castingsshall follow the knowledge today Xiaobian introduce you to here. The company all staff to quality products, enthusiastic service, wholeheartedly welcome customers at home and abroad to visit and negotiate business, joint development.Look forward to your visit!