Low pressure foundry

Low-pressure casting

refers to a method in which liquid metal is filled into a mold under a relatively low pressure (0.02-0.06MPa) and crystallized under pressure to form a casting Low pressure foundry.

Technical features

1. The pressure and speed during pouring can be adjusted, so it can be applied to various different molds (such as metal molds, sand molds, etc.), casting various alloys and castings of various sizes;

2. The bottom injection type is adopted for filling the mold, and the metal liquid fills the mold smoothly without splashing, which can avoid the entrapment of gas and the scouring of the mold wall and core, and improve the qualified rate of castings;

3. The casting crystallizes under pressure, and the casting has a dense structure, clear contours, smooth surface, and high mechanical properties, which is particularly beneficial for the casting of large thin-walled parts;

4. The shrinkage feeder is omitted, and the metal utilization rate is increased to 90-98%;

5. The labor intensity is low, the working conditions are good, the equipment is simple, and it is easy to realize mechanization and automation.

Application: mainly traditional products (cylinder heads, wheel hubs, cylinder frames, etc.)