The technology of casting parts or blanks into pre-prepared forms with given parameters has been used by man since ancient times. The metal cooled down in them, in most cases, has deviations from the required parameters in the form:
- Litnikov.
- Burr.
- Burn-on of the residues of molding sand.
To remove them, use additional machining equipment for casting (to be more precise, after the casting procedure).
Chopping and stripping
In the process of making castings, certain types of defects are formed on cooled blanks - sprues, inlets, gaps and profits. They are formed at the interface between the workpiece and the shape and bar signs. They are a kind of growths that are removed using the following mechanical tools:
- Pneumatic chisels.
- Circular or band saws.
- Gas and arc torches.
After the cutting procedure (performed immediately after removing the blanks from the molding), the surface of the product is cleaned from burnt-on remnants of the components that are used to process the internal cavities of the molds. For these purposes, the following types of equipment are used:
- Tumbling drums for small items.
- Sandblasting and shot blasting machines, depending on the steel grade of the workpiece being processed.
Modern technologies make it possible to install and use equipment for machining castings in automatic mode. Introducing it into the direct production cycle of the foundry. A kind of production line allows you to get a finished product at the exit with the established parameters of the surface quality. Hard manual labor in hot production conditions is practically excluded.
You can get more detailed information on the types of mechanical equipment for the foundry production sector using the website of its developers and suppliers to the domestic market. Technological developments presented on the resource have been successfully tested and launched for serial use at existing metallurgical enterprises.
