The riser cut that makes the foundry result perfect.
If we wanted to draw a brief excursus on the history of modern industry, the foundry would probably be counted as the oldest technique of metal forming.
The ancient art of foundry is now joined by hyper-technological robotic systems to further improve the more delicate phases of preparation of the piece: that is, the elimination of defects and the finishing of each piece.
The result that can be achieved by inserting a Robot Service robotized island in its compartment is really substantial, in terms of precision and time optimization.
How does the foundry work?
Said in very simple words the foundry, from the time of the times, consists in placing a molten metal in a cavity, after the cooling of the metal a piece is obtained that recopies to the positive the shape of the cavity.
With the foundry in effect it is possible to build pieces with a weight from a few grams to many tons.
What are the advantages of the foundry?
- The foundry is very interesting as it can decrease the cost of some structures and increase their efficiency, decreasing their weight.
- The foundry offers the designer a great freedom in the design of the structures with greater integration between the components, allowing the elimination of many sub-components.
Certainly it also imposes greater responsibility on the designer as a structure must be designed according to the technology with which it is intended to be built: therefore a close contact is necessary between the designer and the foundry department from the first stages of the project.
The metals used in the foundry are: steel, cast iron, brass, bronze, aluminum alloys, magnesium alloys and titanium alloys. In general, however, it can be said that alloys are more suitable than pure metals.
To melt a metal it must actually have a relatively low melting temperature, not exceeding 1,500-1,600 ° C, it must have a good fluidity in the molten state so as to correctly fill the form and must not present phenomena which diminish during cooling mechanical strength.
What are the problems of the foundry?
Deformations of thermal origin
All metals undergo a substantial change in volume during the liquid / solid transition and this can cause defects in the castings (casting is a rough piece obtained by foundry).
The change in volume that occurs during solidification can be compensated by feeding the jet with additional molten metal. It can be done by arranging a suitable volume of material, called “matero”, sized to cool the last and therefore to be able to feed the jet with molten metal.
Further information on the combination of foundry and robotic systems can be found on our website by linking to it > link.
For more information on the correct management of castings and of the riser cutting, please contact our consultants (+39) 996 6713 or write at info@robotservice.it
