In addition to pig iron Fe, also contains carbon, silicon, manganese, sulfur, phosphorus and other elements. These elements have a certain influence on the performance of pig iron. Glazed Tile Roll Forming Machine, similar like the Trapezoidal Sheet Roll Forming Machine and Corrugated Roofing Roll Forming Machine, The raw material of the glazed tile forming machine is galvanized steel, different color steel or aluminum plate, roll forming die. Glazed tile molding machine produces the rich color glazed tile, strong corrosion resistance, for the new building materials, with special paint, rich colors, classical and elegant, finishing touch for your building. Its light weight, high strength, good waterproof, easy to install. Glazed Tile Roll Forming Machine Glazed Tile Roll Forming Machine,Metal Glazed Tile Forming Machine,Roof Tile Forming Machine,Metal Glazed Tile Roll Forming Machine CANGZHOU DIXIN ROLL FORMING MACHINE CO.LTD , https://www.dxywj.com
Carbon (C): It exists in two forms in pig iron. One is free carbon ( graphite ), which is mainly found in foundry pig iron, and the other is compound carbon (iron carbide). It is mainly found in steelmaking pig iron and carbonized. The iron is hard and brittle, and the plasticity is low. The content can increase the strength and hardness of the pig iron. If the content is too much, the pig iron is difficult to be cut and processed, which is the reason for the poor cutting performance of the steel pig iron. Graphite is very soft and has low strength, and its presence can increase the casting properties of pig iron.
Silicon (Si): It can promote the separation of carbon contained in pig iron into graphite, can deoxidize, reduce the gas eye of castings , improve the fluidity of molten pig iron, reduce the shrinkage of castings, but contains too much silicon. It will also make the pig iron hard and brittle.
Manganese (Mn): soluble in ferrite and cementite. When the pig iron is refined in the blast furnace, the manganese content is appropriate, which can improve the casting performance and cutting performance of the pig iron. In the blast furnace, manganese can also form manganese sulfide with harmful impurities and enter the slag.
Phosphorus (P): It is a harmful element, but phosphorus can increase the fluidity of molten iron. This is because sulfur reduces the melting point of pig iron, so it is often high in some products. However, the presence of phosphorus increases the hard and brittleness of iron. The excellent phosphorus content of pig iron should be small. Sometimes, in order to increase the fluidity, the phosphorus content can reach 1.2%.
Sulfur (S): It is a harmful element in pig iron. It promotes the combination of iron and carbon, makes iron hard and brittle, and synthesizes low-melting iron sulfide with iron, which makes hot iron brittle and reduces the fluidity of molten iron. Pig iron with high sulfur content is not suitable for casting fine parts. The content of sulfur in foundry pig iron shall not exceed 0.06% (except for wheel pig iron).