Cast iron is an alloy of iron in a ratio of at least 2.14% to carbon. Mainly metal, divided into 2 types: gray and white. In the first, the content of silicon and graphite is from 2.9 to 3.7%.
On the main page, we have given a consistent description of the work stages.
Here, we want you to get acquainted in detail with the main methods of cast iron casting:
- Casting in clay-sand mixture molds;
- Plaster, or shell form;
- Metal-protected form;
- Under pressure;
Inside the mold itself, we place a model of the finished product, which repeats it, but exceeds it in size according to the size of the casting shrinkage.
The mixture is rammed and compacted so that it is completely adjacent to the model. Next, we carry out casting, through the holes (sprues).
Products made of high-strength cast iron are obtained using the method of casting into a gasified model, using molds made of a sand mixture.
In order to improve its properties, high-strength cast iron undergoes heat treatment:
- Heat the material to 850 °C;
- We keep it in a preheated state for several hours;
- Allow to cool with mineral oil at a temperature of 350°C;
This method helps us to remove the internal stress of the metal, and protect ourselves from the appearance of cracks in the application, as well as to increase its uniformity.
Perhaps you are wondering what are the advantages of cast iron casting?
- Long-lasting product quality;
- Reasonable and very affordable prices;
- Wear resistance and durability;
Ultimately, the industries that in the recent past gave their choice to steel, instead of cast iron. Over time, however, they return to the old and proven material.
Professional equipment, helps to produce material in large volumes, without leaving without attention – quality.